using external power supply for graphics card

Geofrancis · Nov 18, 2009

THRiLL KiLL said:
looks like a mini 1u power supply.

the only problem i see with them is that they run hot, and typicaly have a deafing 40mm fan

yea thats what i thought so i just got another 120w external power supply. im just waiting for it to arrive.

Lazzer408 · Nov 18, 2009

The one you posted the picture of is an open frame psu with passive cooling = silent.

I have yet to find a sff psu with a quiet fan. The 1u supplies are even worse.

THRiLL KiLL · Nov 18, 2009

why not grab a newer powersupply that has the 6pin videocard power cable and then jumper it to start when the system starts up?

http://www.overclock.net/faqs/15751-info-can-i-use-two-power.html

yeah it will be a bit bigger, but it will be quietier =)

Geofrancis · Nov 18, 2009

Lazzer408 said:
The one you posted the picture of is an open frame psu with passive cooling = silent.

I have yet to find a sff psu with a quiet fan. The 1u supplies are even worse.

well the other thing was like i said in a post before i dont like mains 240v cables in my case.

Lazzer408 · Nov 18, 2009

Geofrancis said:
well the other thing was like i said in a post before i dont like mains 240v cables in my case.

I know you had mentioned that. Were you pondering putting the open frame supply in the chassis? I figured you would mount it externally.

What's the 120w brick going to run you?

Geofrancis · Nov 18, 2009

Lazzer408 said:
I know you had mentioned that. Were you pondering putting the open frame supply in the chassis? I figured you would mount it externally.

if i was going to use it i would have mounted it under the hard drive rack but im not sure if it would fit.

my other idea was to get a 400w 12v dc psu and run the graphics card and a pico psu for the motherboard

Lazzer408 said:
What's the 120w brick going to run you?

what do u mean?

Lazzer408 · Nov 18, 2009

Geofrancis said:
if i was going to use it i would have mounted it under the hard drive rack but im not sure if it would fit.

my other idea was to get a 400w 12v dc psu and run the graphics card and a pico psu for the motherboard

what do u mean?

What was the cost?

Geofrancis · Nov 18, 2009

Lazzer408 said:
What was the cost?

£16 inc delivery from china

Geofrancis · Dec 5, 2009

got a bit of an update i made a new front for case out of card board so i can use it as a template . so the lcd is mounted along with 2 usb ports underneath it and i still have to install the leds for the power supply status. ive decided to leave the stock buttons for now i probibly will change them eventualy.

i have found a strange problem when i turn on pci-e 2.0. i start getting random BSOD's when starting the computer. now i can only start the computer with it off and becasue i only have a pci-e 4x link it takes about 20fps off me in games.

i done a few measurements with a killawatt meter on the 2 power supplys and with a prime 95 + furmark load it was pulling 205w from the main psu and 83w from the external one. so it very close the max power of the internal 200w psu.

Lazzer408 · Dec 7, 2009

Geofrancis said:
got a bit of an update i made a new front for case out of card board so i can use it as a template . so the lcd is mounted along with 2 usb ports underneath it and i still have to install the leds for the power supply status. ive decided to leave the stock buttons for now i probibly will change them eventualy.

http://i45.tinypic.com/24n4qi9.jpg

i have found a strange problem when i turn on pci-e 2.0. i start getting random BSOD's when starting the computer. now i can only start the computer with it off and becasue i only have a pci-e 4x link it takes about 20fps off me in games.

i done a few measurements with a killawatt meter on the 2 power supplys and with a prime 95 + furmark load it was pulling 205w from the main psu and 83w from the external one. so it very close the max power of the internal 200w psu.

cardboard ftw.

Is their any wattage difference when you turn on 2.0?

Geofrancis · Dec 7, 2009

Lazzer408 said:
cardboard ftw.

Is their any wattage difference when you turn on 2.0?

i havnt had a chance to check as it bsod's straight away. i removed four of my hard drives and unplugged anything not essential and it did the same. anyway i have bought a 9600gso for some cuda action and to lower the power consumption a little.

Geofrancis · Dec 19, 2009

Got the 9600gso installed and it worked for a few days then the bsod's returned so ive took the card out and im going to get a new itx case that will take a micro atx psu for the phenom/mobo/hd4850. None of this dual psu hassle and put my intel atom board back in the 200w case.

smashed_99cbr · Dec 20, 2009

seems like a lot of work and a lot of trouble... not to mention silly... with no real benefits to speak of

Geofrancis · Dec 20, 2009

smashed_99cbr said:
seems like a lot of work and a lot of trouble... not to mention silly... with no real benefits to speak of

what are you on about?

Geofrancis · Dec 20, 2009

the case that im looking at is this one
http://www.ksn-online.co.uk/product_info.php?products_id=7530

that case is smaller and will let me use a normal micro atx power supply that is much quieter and the 200w power supply is not powerfull enough for a decent gaming computer.

i seen 500w micro atx power supplys but they are too cheap to be any good. so i was thinking of getting this one
350w Be Quiet BN134 SFX microATX PSU
http://www.scan.co.uk/Products/350w-Be-Quiet-BN134-SFX-uATX-PSU

is there any more decent micro atx power supplys out there?

System Name	Machine XX
Processor	Ryzen 7600
Motherboard	MSI X670E GAMING PLUS
Cooling	120mm heatsink
Memory	32GB DDR5 6000 CL30
Video Card(s)	RX5700XT 8Gb
Storage	280GB Optane 900p
Display(s)	19" + 23" + 17"
Case	ATX
Audio Device(s)	Soundblaster Z
Power Supply	800W
Software	Windows 11

Processor	i7 2600k@4.6ghz
Motherboard	MSI z68ma-ed55
Cooling	Silentx Extreem 120mm
Memory	2x4gb XMS 7-8-7-20 1600
Video Card(s)	HD6870
Storage	2x128gb Kingston Hyper-X (Raid0), 2x750gb RE3 (RAID1), 2x750gb RE3 (RAID1)
Display(s)	Soyo 24", Gateway 22"
Case	Fractal Design Arc Mini 6x120mm fans.
Audio Device(s)	Onboard
Power Supply	Zalman 750w
Software	Windows 7

Processor	Intel Xeon x5660 (4.2ghz)
Motherboard	Gigabyte X58A-UD3R
Cooling	Corsair H100
Memory	24gb (6x 4gb DDR3 1600) Kingston Hyperx
Video Card(s)	XFX Black r290x 4gb ddr5 OC
Storage	6x 2tb 64mb WD drives, Patriot Pyro sandforce2 drive ,intel 180gb ssd
Display(s)	HP w2558hc
Case	Corsair Carbine 500r
Audio Device(s)	X-Fi Pro Fatality
Power Supply	XFX 750 watt
Mouse	Thermaltake Theron ee Sports+
Keyboard	Corsair Vengence k70 RGB Cherry Red
Software	Windows 8.1 x64

System Name	Machine XX
Processor	Ryzen 7600
Motherboard	MSI X670E GAMING PLUS
Cooling	120mm heatsink
Memory	32GB DDR5 6000 CL30
Video Card(s)	RX5700XT 8Gb
Storage	280GB Optane 900p
Display(s)	19" + 23" + 17"
Case	ATX
Audio Device(s)	Soundblaster Z
Power Supply	800W
Software	Windows 11

Processor	i7 2600k@4.6ghz
Motherboard	MSI z68ma-ed55
Cooling	Silentx Extreem 120mm
Memory	2x4gb XMS 7-8-7-20 1600
Video Card(s)	HD6870
Storage	2x128gb Kingston Hyper-X (Raid0), 2x750gb RE3 (RAID1), 2x750gb RE3 (RAID1)
Display(s)	Soyo 24", Gateway 22"
Case	Fractal Design Arc Mini 6x120mm fans.
Audio Device(s)	Onboard
Power Supply	Zalman 750w
Software	Windows 7

using external power supply for graphics card

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