• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

AMD Justifies Using Liquid Chamber Tech On Upcoming 7900-Series Cards

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
17,865 (2.89/day)
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K @ 4GHz
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (2 x 8GB Corsair Vengeance Black DDR3 PC3-12800 C9 1600MHz)
Video Card(s) MSI RTX 2080 SUPER Gaming X Trio
Storage Samsung 850 Pro 256GB | WD Black 4TB | WD Blue 6TB
Display(s) ASUS ROG Strix XG27UQR (4K, 144Hz, G-SYNC compatible) | Asus MG28UQ (4K, 60Hz, FreeSync compatible)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair AX1600i
Mouse Microsoft Intellimouse Pro - Black Shadow
Keyboard Yes
Software Windows 10 Pro 64-bit
videocardz.com brings us a photo showing the benefits of AMD's new liquid chamber technology over the standard vapour chamber technology used in current heatpipe cooling solutions. There's quite a few benefits, some of which are no drying out, physical robustness and greater reliability. Indeed, can you imagine the disastrous effect on your graphics card of having the cooling system spring a leak during an intense gaming session? Doesn't bear thinking about… Certainly the era of having to replace your graphics card's shrill and inefficient cooler with a high performance aftermarket one are long over, as stock coolers are now generally of very good quality. The liquid chamber system will be used by all AMD's partners who stick to the reference design. Check out the photo for the full info.



View at TechPowerUp Main Site
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
17,865 (2.89/day)
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K @ 4GHz
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (2 x 8GB Corsair Vengeance Black DDR3 PC3-12800 C9 1600MHz)
Video Card(s) MSI RTX 2080 SUPER Gaming X Trio
Storage Samsung 850 Pro 256GB | WD Black 4TB | WD Blue 6TB
Display(s) ASUS ROG Strix XG27UQR (4K, 144Hz, G-SYNC compatible) | Asus MG28UQ (4K, 60Hz, FreeSync compatible)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair AX1600i
Mouse Microsoft Intellimouse Pro - Black Shadow
Keyboard Yes
Software Windows 10 Pro 64-bit
Thanks again to Damn_Smooth for another great lead! :toast:

EDIT: There's now a detailed look at this new technology, here.
 
Last edited:
Joined
Mar 13, 2009
Messages
123 (0.02/day)
So... how exactly does that work, when the GPU is upside-down? Doesn't the wick in the vapor chamber exist for exactly that reason? Someone please enlighten me, as I feel like a moron at the moment :D
 
Joined
Aug 30, 2009
Messages
4,012 (0.72/day)
Location
Sarasota, Florida, USA
System Name Awesomesauce 4.3 | Laptop (MSI GE72VR 6RF Apache Pro-023)
Processor Intel Core i7-5820K 4.16GHz 1.28v/3GHz 1.05v uncore | Intel Core i7-6700HQ @ 3.1GHz
Motherboard Gigabyte GA-X99-UD5 WiFi LGA2011-v3| Stock
Cooling Corsair H100i v2 w/ 2x EK Vardar F4-120ER + various 120/140mm case fans | Stock
Memory G.Skill RJ-4 16GB DDR4-2666 CL15 quad channel | 12GB DDR4-2133
Video Card(s) EVGA GTX 1080 Ti Hybrid SC2 11GB @ 2012/5151 boost | NVIDIA GTX 1060 6GB +200/+500 + Intel 530
Storage Samsung 840 EVO 500GB + Seagate 3TB 7200RPM + others | Kingston 256GB M.2 SATA + 1TB 7200RPM
Display(s) Acer G257HU 1440p 60Hz AH-IPS 4ms | 17.3" 1920*1080 60Hz wide angle TN notebook panel
Case Fractal Design Define XL R2 | MSI
Audio Device(s) Creative Sound Blaster Z | Realtek with quad stereo speakers and subwoofer
Power Supply Corsair HX850i Platinum | 19.5v 180w Delta brick
Software Windows 10 Pro x64 | Windows 10 Home x64
Hopefully there aren't chances of defects such as overfilling where your cooler suddenly explodes under a high workload. Anyone that remembers the batches of Nichicon capacitors which weren't actually part of the "cap plague" but were rather overfilled with electrolyte and would pop can probably visualize where I'm going with that.
 

mediasorcerer

New Member
Joined
Sep 15, 2011
Messages
978 (0.20/day)
Location
coast ,melbourne
System Name THE MEDIAMACHINE
Processor i5-3570k
Motherboard Asus gene v z-77 matx.
Cooling Antec h20 620
Memory 2x4gb g.skill ripjaws z 2400
Video Card(s) h.i.s radeon 7950 reference 3 gb- hooray!!!
Storage samsung 128gb~830 ssd. samsung 500gb hdrive.
Display(s) 22 inch tele.
Case circa 1996 grey rat box with no sides front.until my own is finished
Audio Device(s) inbuilt creative.supreme effects 3
Power Supply thermaltake tt-500w
Software win 7 x64-
Benchmark Scores Coming soon
OOoh cant wait, im going reference next time for sure.
 
Joined
Oct 29, 2009
Messages
2,670 (0.49/day)
System Name Old Gateway
Processor i5 4440 3.1ghz
Motherboard Gateway
Cooling Eh it doesn't thermal throttle
Memory 2x 8GB JEDEC 1600mhz DDR3
Video Card(s) RX 560D 4GB
Storage 240gb 2.5 SSD
Display(s) Dell @ 1280*1024 75hz
Case Gateway
Audio Device(s) Gateway Diamond Audio EMC2.0-USB 5375U ($15 a long ass time ago)
Power Supply 380w oem
Mouse Purple Walmart special, 1600dpi. Black desk mat
Keyboard SteelSeries Apex 100
VR HMD Lmao
Software Windows 10
Benchmark Scores It can run Crysis (Original), Doom 2016, and Halo MCC
Now if AMD could justify the performance of Bulldozer... Seriously.... If I upgrade to another AMD cpu i'll probably just get a high clocked Phenom II x6 and OC it some more. (though i'll probably end up with a 2500k)

yea I'm not so sure how they're gonna get the pool to be on the gpu side when its upside down... unless they're gonna flip the way the PCB is? have the gpu face up instead of down? Doubt it though, would be compatibility issues with several boards/cases... like the ones with the x16 at the top
 
J

John Doe

Guest
Hopefully there aren't chances of defects such as overfilling where your cooler suddenly explodes under a high workload. Anyone that remembers the batches of Nichicon capacitors which weren't actually part of the "cap plague" but were rather overfilled with electrolyte and would pop can probably visualize where I'm going with that.

That shouldn't be the case here. The liquid doesn't exist like you think it does, it's inside of the cooler. You have to break the heatpipe for the water to leak. Caps on the other hand are filled with a formula that functions at specific volts/capacitance. This is a solid solution (water inside copper), unlike the liquid inside of a capacitor. I've yet to hear a cooler explode from overheating...

as a side note, that was a specific case with Nichicon's. They're quality caps that're harder to get (due flood) right now.
 
Joined
Jan 2, 2009
Messages
9,899 (1.71/day)
Location
Essex, England
System Name My pc
Processor Ryzen 5 3600
Motherboard Asus Rog b450-f
Cooling Cooler master 120mm aio
Memory 16gb ddr4 3200mhz
Video Card(s) MSI Ventus 3x 3070
Storage 2tb intel nvme and 2tb generic ssd
Display(s) Generic dell 1080p overclocked to 75hz
Case Phanteks enthoo
Power Supply 650w of borderline fire hazard
Mouse Some wierd Chinese vertical mouse
Keyboard Generic mechanical keyboard
Software Windows ten
Pictures of some of the heatsinks that use this? ( and the liquid chambers them selfs) ?

FsNX4.jpg
 

Wile E

Power User
Joined
Oct 1, 2006
Messages
24,318 (3.68/day)
System Name The ClusterF**k
Processor 980X @ 4Ghz
Motherboard Gigabyte GA-EX58-UD5 BIOS F12
Cooling MCR-320, DDC-1 pump w/Bitspower res top (1/2" fittings), Koolance CPU-360
Memory 3x2GB Mushkin Redlines 1600Mhz 6-8-6-24 1T
Video Card(s) Evga GTX 580
Storage Corsair Neutron GTX 240GB, 2xSeagate 320GB RAID0; 2xSeagate 3TB; 2xSamsung 2TB; Samsung 1.5TB
Display(s) HP LP2475w 24" 1920x1200 IPS
Case Technofront Bench Station
Audio Device(s) Auzentech X-Fi Forte into Onkyo SR606 and Polk TSi200's + RM6750
Power Supply ENERMAX Galaxy EVO EGX1250EWT 1250W
Software Win7 Ultimate N x64, OSX 10.8.4
I don't give a shit is they are made from unicorn jizz and leprechaun farts, so long as they do their job.
 
Joined
Jan 2, 2009
Messages
9,899 (1.71/day)
Location
Essex, England
System Name My pc
Processor Ryzen 5 3600
Motherboard Asus Rog b450-f
Cooling Cooler master 120mm aio
Memory 16gb ddr4 3200mhz
Video Card(s) MSI Ventus 3x 3070
Storage 2tb intel nvme and 2tb generic ssd
Display(s) Generic dell 1080p overclocked to 75hz
Case Phanteks enthoo
Power Supply 650w of borderline fire hazard
Mouse Some wierd Chinese vertical mouse
Keyboard Generic mechanical keyboard
Software Windows ten
Oh by the by, if you're wondering how this works upside down, the chamber is made of copper so heat will make it round to the other side of the chamber and heat the liquid, once this starts happening the liquid will start to boil ( I'm guessing it won't be water ever in this type of cooler)

causing the liquid to no lower be not quite so still : ] ( I.E it will be bouncing about all over inside the chamber)
 
Joined
Mar 13, 2009
Messages
123 (0.02/day)
Oh by the by, if you're wondering how this works upside down, the chamber is made of copper so heat will make it round to the other side of the chamber and heat the liquid, once this starts happening the liquid will start to boil ( I'm guessing it won't be water ever in this type of cooler)

causing the liquid to no lower be not quite so still : ] ( I.E it will be bouncing about all over inside the chamber)

Yeah, but the point of the system is to boil the liquid, which then goes up as vapor and condense(cool) at the top, then return to the pool. That doesn't work upside-down/the other way around. I'm really curious to find out how they plan on making it work.
 
J

John Doe

Guest
Yep. Water is only inside the part of cooler that touch the core of the GPU. The convection system works like a TEC. You know, a plate that sits between the heatsink and the core.

BTW, these heatsinks look somewhat big and effective.
 
Joined
Jan 2, 2009
Messages
9,899 (1.71/day)
Location
Essex, England
System Name My pc
Processor Ryzen 5 3600
Motherboard Asus Rog b450-f
Cooling Cooler master 120mm aio
Memory 16gb ddr4 3200mhz
Video Card(s) MSI Ventus 3x 3070
Storage 2tb intel nvme and 2tb generic ssd
Display(s) Generic dell 1080p overclocked to 75hz
Case Phanteks enthoo
Power Supply 650w of borderline fire hazard
Mouse Some wierd Chinese vertical mouse
Keyboard Generic mechanical keyboard
Software Windows ten
Yeah, but the point of the system is to boil the liquid, which then goes up as vapor and condense(cool) at the top, then return to the pool. That doesn't work upside-down/the other way around. I'm really curious to find out how they plan on making it work.

TBH I think the diagram is just crappy, if you look up the various bits on bobs written down instead it makes more sense ( at-least to me it does, could be reading into things wrong it's like 6 am here and I've not slept yet)

Pool boiling is the first thing you should look up and read about :toast:
 
Last edited:
J

John Doe

Guest
It's 28nm anyway, no need for Accelero Xtreme's. This system should be sufficient.
 
Joined
Jan 2, 2009
Messages
9,899 (1.71/day)
Location
Essex, England
System Name My pc
Processor Ryzen 5 3600
Motherboard Asus Rog b450-f
Cooling Cooler master 120mm aio
Memory 16gb ddr4 3200mhz
Video Card(s) MSI Ventus 3x 3070
Storage 2tb intel nvme and 2tb generic ssd
Display(s) Generic dell 1080p overclocked to 75hz
Case Phanteks enthoo
Power Supply 650w of borderline fire hazard
Mouse Some wierd Chinese vertical mouse
Keyboard Generic mechanical keyboard
Software Windows ten
It's 28nm anyway, no need for Accelero Xtreme's. This system should be sufficient.

I recall people saying the same for 45nm.

Have to remember they'll probably keep within the same TDP as they're current cards.

Otherwise you don't get an upgrade :laugh: ( well you can get the same card with less heat but they tend to then be sold as midrange cards or sweet spot cards etc)
 
J

John Doe

Guest
I recall people saying the same for 45nm.

Have to remember they'll probably keep within the same TDP as they're current cards.

Otherwise you don't get an upgrade :laugh: ( well you can get the same card with less heat but they tend to then be sold as midrange cards or sweet spot cards etc)

Nope.

http://www.tomshardware.com/news/amd-HD-7900-XDR2-Rambus-Memory,13408.html

45nm was different. nVidia couldn't get it right with two different head managers; that's why the 480 was... what it was.

nVidia claims 3-4 times lower performance per watt (nonsense). But the idea is, they're going to be more efficient. Look at the 580, even it doesn't need a custom cooler. I've seen a few people have it running at 50-55C in games.
 

de.das.dude

Pro Indian Modder
Joined
Jun 13, 2010
Messages
8,978 (1.71/day)
Location
Internet is borked, please help.
System Name Monke | Work Thinkpad| J1nnx took Old Monke
Processor Ryzen 5600X | Ryzen 5500U | FX8320
Motherboard ASRock B550 Extreme4 | ? | Asrock 990FX Extreme 4
Cooling 240mm Rad | Not needed | hyper 212 EVO
Memory 2x16GB DDR4 3600 Corsair RGB | 16 GB DDR4 3600 | 16GB DDR3 1600
Video Card(s) Sapphire Pulse RX6700XT 12GB | Vega 8 | Sapphire Pulse RX580 8GB
Storage Samsung 980 nvme (Primary) | some samsung SSD
Display(s) Dell 2723DS | Some 14" 1080p 98%sRGB IPS | Dell 2240L
Case Ant Esports Tempered case | Thinkpad | Antec
Audio Device(s) Logitech Z333 | Jabra corpo stuff
Power Supply Corsair RM750e | not needed | Corsair GS 600
Mouse Logitech G400 | nipple
Keyboard Logitech G213 | stock kb is awesome | Logitech K230
VR HMD ;_;
Software Windows 10 Professional x3
Benchmark Scores There are no marks on my bench
liquid faster than vapour cuz it has more densitY!!!
 
Joined
Jan 2, 2009
Messages
9,899 (1.71/day)
Location
Essex, England
System Name My pc
Processor Ryzen 5 3600
Motherboard Asus Rog b450-f
Cooling Cooler master 120mm aio
Memory 16gb ddr4 3200mhz
Video Card(s) MSI Ventus 3x 3070
Storage 2tb intel nvme and 2tb generic ssd
Display(s) Generic dell 1080p overclocked to 75hz
Case Phanteks enthoo
Power Supply 650w of borderline fire hazard
Mouse Some wierd Chinese vertical mouse
Keyboard Generic mechanical keyboard
Software Windows ten
Nope.

http://www.tomshardware.com/news/amd-HD-7900-XDR2-Rambus-Memory,13408.html

45nm was different. nVidia couldn't get it right with two different head managers; that's why the 480 was... what it was.

nVidia claims 3-4 times lower performance per watt (nonsense). But the idea is, they're going to be more efficient. Look at the 580, even it doesn't need a custom cooler. I've seen a few people have it running at 50-55C in games.

But what about 65nm and 90nm?

People have kept saying we'll need less powerful cooling but yet the inverse has happened, nv and nvidia started pushing the clock speeds more and building much more complicated chips, remember when gpus only came in 1 slot?

Just seems tech always get pushed along with the fabrication size.
 
J

John Doe

Guest
But what about 65nm and 90nm?

People have kept saying we'll need less powerful cooling but yet the inverse has happened, nv and nvidia started pushing the clock speeds more and building much more complicated chips, remember when gpus only came in 1 slot?

Just seems tech always get pushed along with the fabrication size.

It all comes down on the specific case. Cards that had single slot coolers (8800 GT - 4850 etc) have shown to be ineffective on past occasions. Before those, old GPU's only needed a simple aluminum chipset cooler.

Leakage is the key word. With more effective manufactoring processes, TDP is lowered as well as temps. You're thinking of it upside down.

http://www.overclock.net/t/1126863/real-world-power-usage-user-submitted-values#post_15090607
 

cdawall

where the hell are my stars
Joined
Jul 23, 2006
Messages
27,680 (4.14/day)
Location
Houston
System Name All the cores
Processor 2990WX
Motherboard Asrock X399M
Cooling CPU-XSPC RayStorm Neo, 2x240mm+360mm, D5PWM+140mL, GPU-2x360mm, 2xbyski, D4+D5+100mL
Memory 4x16GB G.Skill 3600
Video Card(s) (2) EVGA SC BLACK 1080Ti's
Storage 2x Samsung SM951 512GB, Samsung PM961 512GB
Display(s) Dell UP2414Q 3840X2160@60hz
Case Caselabs Mercury S5+pedestal
Audio Device(s) Fischer HA-02->Fischer FA-002W High edition/FA-003/Jubilate/FA-011 depending on my mood
Power Supply Seasonic Prime 1200w
Mouse Thermaltake Theron, Steam controller
Keyboard Keychron K8
Software W10P
It all comes down on the specific case. Cards that had single slot coolers (8800 GT - 4850 etc) have shown to be ineffective on past occasions. Before those, old GPU's only needed a simple aluminum chipset cooler.

Leakage is the key word. With more effective manufactoring processes, TDP is lowered as well as temps. You're thinking of it upside down.

http://www.overclock.net/t/1126863/real-world-power-usage-user-submitted-values#post_15090607

With better manufacturing you get lower leakage chips that run at lower voltage that in turn lowers TDP. Yet again manufacturing die size has nothing to do with TDP.
 
J

John Doe

Guest
With better manufacturing you get lower leakage chips that run at lower voltage that in turn lowers TDP. Yet again manufacturing die size has nothing to do with TDP.

lol? Both, I'm talking about both. If you shrink down a GPU, you'll lower down it's TDP as well. The 3870, although based on a cheaper PCB, pulled half as much power as the HD 2900 after a big die shrink (with the help of better manufactoring as well).
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
17,865 (2.89/day)
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K @ 4GHz
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (2 x 8GB Corsair Vengeance Black DDR3 PC3-12800 C9 1600MHz)
Video Card(s) MSI RTX 2080 SUPER Gaming X Trio
Storage Samsung 850 Pro 256GB | WD Black 4TB | WD Blue 6TB
Display(s) ASUS ROG Strix XG27UQR (4K, 144Hz, G-SYNC compatible) | Asus MG28UQ (4K, 60Hz, FreeSync compatible)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair AX1600i
Mouse Microsoft Intellimouse Pro - Black Shadow
Keyboard Yes
Software Windows 10 Pro 64-bit
lol? Both, I'm talking about both. If you shrink down a GPU, you'll lower down it's TDP as well. The 3870, although based on a cheaper PCB, pulled half as much power as the HD 2900 after a big die shrink (with the help of better manufactoring as well).

I'll second that. I've still got my 2900 and it runs hot as hell, while giving fairly low framerates. It was the Bulldozer of it's day, really. :ohwell:

It's a beautiful looking card though. :D
 
Joined
Jan 2, 2009
Messages
9,899 (1.71/day)
Location
Essex, England
System Name My pc
Processor Ryzen 5 3600
Motherboard Asus Rog b450-f
Cooling Cooler master 120mm aio
Memory 16gb ddr4 3200mhz
Video Card(s) MSI Ventus 3x 3070
Storage 2tb intel nvme and 2tb generic ssd
Display(s) Generic dell 1080p overclocked to 75hz
Case Phanteks enthoo
Power Supply 650w of borderline fire hazard
Mouse Some wierd Chinese vertical mouse
Keyboard Generic mechanical keyboard
Software Windows ten
It all comes down on the specific case. Cards that had single slot coolers (8800 GT - 4850 etc) have shown to be ineffective on past occasions. Before those, old GPU's only needed a simple aluminum chipset cooler.

Leakage is the key word. With more effective manufactoring processes, TDP is lowered as well as temps. You're thinking of it upside down.

http://www.overclock.net/t/1126863/real-world-power-usage-user-submitted-values#post_15090607

I'm not man, yes if they used the exact same design but used a smaller process then tdp will be reduced, but this rarely happens, people take advantage of the smaller size and pack twice as much in as before leading us back to where we were before in terms of TDP and powerdraw.

Might have grabbed the powerdaw rather than TDP but source said it's TDP, the 580 if my source is right has a 244W TDP. The TDP of a 2900xt was 215W.

See what I mean? Heat output stays around the same level for top end cards because like I said they go for double the speed not half the size.


The 3870 was pretty much the same as a 2900xt ( infact it has less transistors, lower rop count) yet was on a smaller process hence it's powerdraw being much lower than that of the 2900xt.


If we were just doing powerdraw ( according to geeks3d)


8800 Ultra 175w 90nm 681M Transistors
9800 GTX+ 141w 55nm 754M Transistors
GTS 285 204w 40nm 1400M Transistors
GTX 480 260w (peak 3D) 40nm 3200M Transistors
GTX 560 Ti 205w (peak 3D) 40nm 1950M Transistors
GTX 580 280w (peak 3D) 40nm 3000M Transistors

2900xt 215w 90nm 700M Transistors
HD 3870 105w 55nm 666M Transistors
HD 4870 157w 55nm 956M Transistors
HD 5870 188w 40nm 2154M Transistors
HD6870 151w 40nm 1700M Transistors
HD 6970 250 (PowerTune +20%) 40nm 2640M Transistors

Hell the 6970 is hotter and more powerhungry then a 2900xt


Fab process just affects how much they can fit in one space, the voltage requirement is reduced as well so yes you can get a lower TDP but not all the time design as it depends on the design of the card it's self.


Excuse me if I've got any odd typos or if this is a bit rambling, no sleep makes panther something something.


*edit* added Nvidia cards, took me longer to collate data.
 
Last edited:
J

John Doe

Guest
I'm not man, yes if they used the exact same design but used a smaller process then tdp will be reduced, but this rarely happens, people take advantage of the smaller size and pack twice as much in as before leading us back to where we were before in terms of TDP and powerdraw.

Might have grabbed the powerdaw rather than TDP but source said it's TDP, the 580 if my source is right has a 244W TDP. The TDP of a 2900xt was 215W.

See what I mean? Heat output stays around the same level for top end cards because like I said they go for double the speed not half the size.

The 3870 was pretty much the same as a 2900xt ( infact it has less transistors, lower rop count) yet was on a smaller process hence it's powerdraw being much lower than that of the 2900xt.

If we were just doing powerdraw ( according to geeks3d)

2900xt 215w 90nm 700 M Transistors
HD 3870 105w 55nm 666M Transistors
HD 4870 157w 55nm 956M Transistors
HD 5870 188w 40nm 2154M Transistors
HD6870 151w 40nm 1700M Transistors
HD 6970 250 (PowerTune +20%) 40nm 2640M Transistors

Hell the 6970 is hotter and more powerhungry then a 2900xt

Fab process just affects how much they can fit in one space, the voltage requirement is reduced as well so yes you can get a lower TDP but not all the time design as it depends on the design of the card it's self.

The 3870 doesn't have less ROP's than the HD 2900, it's based on the exact same die. If you noticed, there's not much difference in transistors. So since it performed the same as a HD 2900, most the difference came from a die shrink.

The 6970 isn't more more hungry than a 2900 either. You're just looking at spec sheet and nothing else. Have you read what Pheaderus said? He says it pulls less power than his 4870, although it's rated to have 100W higher TDP.

Look at this. 6970 pulls less power than a 570 although it again is rated higher, has a bigger die and more transistors:

http://www.guru3d.com/article/radeon-6950-6970-review/11

http://www.guru3d.com/article/geforce-gtx-570-review/8

6970 runs hotter than a HD 2900? That's just absurd.

And yes, fab process isn't what ONLY matters. But that's not what I'm talking about.

What I'm saying is they BOTH matter to a degree.
 
Joined
Jan 2, 2009
Messages
9,899 (1.71/day)
Location
Essex, England
System Name My pc
Processor Ryzen 5 3600
Motherboard Asus Rog b450-f
Cooling Cooler master 120mm aio
Memory 16gb ddr4 3200mhz
Video Card(s) MSI Ventus 3x 3070
Storage 2tb intel nvme and 2tb generic ssd
Display(s) Generic dell 1080p overclocked to 75hz
Case Phanteks enthoo
Power Supply 650w of borderline fire hazard
Mouse Some wierd Chinese vertical mouse
Keyboard Generic mechanical keyboard
Software Windows ten
The 3870 doesn't have less ROP's than the HD 2900, it's based on the exact same die. If you noticed, there's not much difference in transistors. So since it performed the same as a HD 2900, most the difference came from a die shrink.

The 6970 isn't more more hungry than a 2900 either. You're just looking at spec sheet and nothing else. Have you read what Pheaderus said? He says it pulls less power than his 4870, although it's rated to have 100W higher TDP.

Look at this. 6970 pulls less power than a 570 although it again is rated higher, has a bigger die and more transistors:

http://www.guru3d.com/article/radeon-6950-6970-review/11

http://www.guru3d.com/article/geforce-gtx-570-review/8

6970 runs hotter than a HD 2900? That's just absurd.

And yes, fab process isn't what ONLY matters. But that's not what I'm talking about.

What I'm saying is they BOTH matter to a degree.

The 2900 had had 16x2 rops the 3870 just has 16 : ]
Regarding power draw, the newer cards have better power management features, if you switch them off then then a 6970 will draw more power and produce more heat than a 2900xt.

As for a absurd, no it isn't man, slap on the exact same cooler I.E put the 2900xt heatsink on a 6970 and the 6970 will be so much hotter it will switch it's self off. ( The 2900xt cooler may of been copper but it has pretty poor by todays standards, heatpipes were flattened, had a VERY thick base lol)
Infact temperatures with their respective heatsinks
2900xt

6970

Even with superior cooling the 6970 is hotter D:

You'll have to explain you're 570/6970 comparison though because the way you've put it sounds like you're saying the 6970 has more transistors, when it doesn't the 570 has more :S

Oh and by the by I'm not just reading spec sheets I went looking for power draw ratings and went they went onto to look at specifications afterwards just to make the data a bit easier to compare.
 
Last edited:
Top