HIS Radeon HD 5770 1 GB

[Benetanegia]

infact...ati made a clear lineup with 5000s cards. 58** bus at 256 bit, 57** or less 128 bit, so also using hypothetical gddr5 at 7ghz 5770 stay under 4890 ...The 4890 replacement probably would be a 5830 withbus a 256bit, but 1280 sp (160*8)

I don't fully understand your post TBH.

I'm not saying that the HD5770 is the replacemet for the 4890. All I'm saying is that the only difference between those two cards, specs wise, is the memory bandwidth. Both have 800 SP, 16 ROPs and 40 TMUs clocked at 850 Mhz, so in theory they should perform the same if the memory was fast enough in both cards.

IDK. Maybe it's not the memory. For the HD5870, which is also slower than what the specs suggest, I have said in the past weeks that it could be the setup engine/thread dispatcher that has not been improved. I don't think that is the case in the HD5770, because I'd think that the thread dispatcher is the same in every HD5xxx card*, so it should be more than enough for the HD5770. In the case of the HD5770 I just think it's the memory, but I'm waiting those benchies. I like speculating and then seing actual empirical work confirm or destroy my theories.

* It makes sense IMO. Same unit for all means less R&D and those units take up very little die area compared to other units, so including acomparatively big/fast dispatcher doesn't increase the price of smaller chips.

 

[Ghiltanas]

I don't fully understand your post TBH.

I'm not saying that the HD5770 is the replacemet for the 4890. All I'm saying is that the only difference between those two cards, specs wise, is the memory bandwidth. Both have 800 SP, 16 ROPs and 40 TMUs clocked at 850 Mhz, so in theory they should perform the same if the memory was fast enough in both cards.

IDK. Maybe it's not the memory. For the HD5870, which is also slower than what the specs suggest, I have said in the past weeks that it could be the setup engine/thread dispatcher that has not been improved. I don't think that is the case in the HD5770, because I'd think that the thread dispatcher is the same in every HD5xxx card*, so it should be more than enough for the HD5770. In the case of the HD5770 I just think it's the memory, but I'm waiting those benchies. I like speculating and then seing actual empirical work confirm or destroy my theories.

* It makes sense IMO. Same unit for all means less R&D and those units take up very little die area compared to other units, so including acomparatively big/fast dispatcher doesn't increase the price of smaller chips.

i added a part doesn't have to do with quote

 

[SonDa5]

When will the BIOS be available in the data base?

 

[theorw]

Does anyone know if the voltage controller is gonna be supported in any software like atitool,ATT AMD tool etc????

 

[MarcusTaz]

Well I bit the bullet and got a Sapphire for $154.99 and then used bing cashback so that should get me another 5% off, right in that 4870 range... I sold my 4870 512mb card so this should work just fine for my needs in my secondary rig. I really am impressed by the power consumption and heat control, since I am using this in an older Coolermaster HTPC case with a 350 watt PSU. A PSU mind you that is custom narrow size and a stadard psu will not fit. So this hopefully will work out like a charm, I hope... let you know how it goes if anyone cares when I get it...

 

[Lazzer408]

Does anyone know if the voltage controller is gonna be supported in any software like atitool,ATT AMD tool etc????

If not I'm sure Random Murderer will have a pencil mod soon enough.

 

[theorw]

If not I'm sure Random Murderer will have a pencil mod soon enough.

lol!!!

 

[theorw]

interesting is that 4850 still holds the crown for PERFORMANCE/$!!!
Legendary !

 

[burtram]

So, would be the performance difference going from Dual 8800GS's (384mb, 96 shaders, 192-bit memory interface) to a single 5770 be worth it for gaming at 1680x1050? May consider getting one sometime in November as long as performance is similar or better. Though only after I buy a monitor to replace this dying one.

 

[theorw]

If not I'm sure Random Murderer will have a pencil mod soon enough.

According to this:http://www.st.com/stonline/products/literature/ds/15341/l6788a.pdf
and
and assuming that pins count from the arrow right?
This is only if someone,after support for this chip exists,still needs more than 1,35 volts,this chip can output!
The pin on the yellow circle would be the FB pin,the one to solder a resistor or to find a connected resistor with RIGHT guys?Not absolutely sure!Anyone brave enough to try this out?
EDIT:After reading more carefully the pins description,i got confused with the the pins 19-and 20.Anyone can help???

So, would be the performance difference going from Dual 8800GS's (384mb, 96 shaders, 192-bit memory interface) to a single 5770 be worth it for gaming at 1680x1050? May consider getting one sometime in November as long as performance is similar or better. Though only after I buy a monitor to replace this dying one.

It will be much friendlier to your electric bill for sure!!!

 

[Lazzer408]

So, would be the performance difference going from Dual 8800GS's (384mb, 96 shaders, 192-bit memory interface) to a single 5770 be worth it for gaming at 1680x1050? May consider getting one sometime in November as long as performance is similar or better. Though only after I buy a monitor to replace this dying one.

5770 = weaksauce!

58xx or your fragmeat.

 

[Lazzer408]

According to this:http://www.st.com/stonline/products/literature/ds/15341/l6788a.pdf
and [url]http://img131.imageshack.us/img131/6659/vregsmall.jpg[/URL]
and assuming that pins count from the arrow right?
This is only if someone,after support for this chip exists,still needs more than 1,35 volts,this chip can output!
The pin on the yellow circle would be the FB pin,the one to solder a resistor or to find a connected resistor with RIGHT guys?Not absolutely sure!Anyone brave enough to try this out?
EDIT:After reading more carefully the pins description,i got confused with the the pins 19-and 20.Anyone can help???

It will be much friendlier to your electric bill for sure!!!

Holy crap my printer is working! I'll get back with you in a moment.

EDIT - Pin19 is a ground for voltage feedback. It's pin20 -and- pin23 that make up the gpu's v+ voltage feedback. The way they show it is a resistor from pin20 to FBRTN(Pin19/gpu-ground) to adjust the voltage. So pulling pin20 lower WILL increase v+ to the gpu. You can also pull pin23 lower but I believe this will have a greater effect the droop control. Good or bad? I don't know. You might get too much droop control. There's an ntc parallel with r92(shown) which lowers the sensed voltage as heat rises. The regulator must then compensate by raising the voltage. Adjusting pin23 is before the droop circuit. Both pin20 and 23 -will- raise voltage but I'd start with pin20 and see how stable the voltage is with varying temps. You may find it more stable to use pin23 but they don't show that as the 'official' means of voltage control.

EDIT - This photo is rotated 90deg from the actual image of the chip you posted.

 

[burtram]

5770 = weaksauce!

58xx or your fragmeat.

Hehe, I would love to get my hands on a 5850, it just isn't within my budget (being unemployed doesn't help). Though, when I do finally find work that pays (freakin internship, lol) I will be building a whole new system, with either the 5850 or nvidia equivolent, whichever has the most bang/buck at the time.

 

[Lazzer408]

Hehe, I would love to get my hands on a 5850, it just isn't within my budget (being unemployed doesn't help). Though, when I do finally find work that pays (freakin internship, lol) I will be building a whole new system, with either the 5850 or nvidia equivolent, whichever has the most bang/buck at the time.

Don't waste it on a 5770 though. A 4870 would probably perform better. Oh wait, it does. http://www.overclockersclub.com/reviews/sapphire_hd5770_hd5750/16.htm

 

[theorw]

Holy crap my printer is working! I'll get back with you in a moment.

EDIT - Pin19 is a ground for voltage feedback. It's pin20 -and- pin23 that make up the voltage feedback. The way they show it is a resistor from pin20 to FBRTN(Pin19/gpu-ground) to adjust the voltage. So pulling pin20 lower WILL increase v+ to the gpu. You can also pull pin23 lower but I believe this will have a greater effect the droop control. Good or bad? I don't know. You might get too much droop control. There's an ntc parallel with r92(shown) which lowers the sensed voltage as heat rises. The regulator must then compensate by raising the voltage. Adjusting pin23 is before the droop circuit. Both pin20 and 23 -will- raise voltage but I'd start with pin20 and see how stable the voltage is with varying temps. You may find it more stable to use pin23 but they don't show that as the 'official' means of voltage control.

EDIT - This photo is rotated 90deg from the actual image of the chip you posted.

http://forums.techpowerup.com/attachment.php?attachmentid=29658&stc=1&d=1255683131

Pin 20 seems more likely to be better!IMO anyway!will try something definitely when i get my hands on one of these next week!I allready have a couple of 100kohms waiting!!!!!

Don't waste it on a 5770 though. A 4870 would probably perform better. Oh wait, it does. http://www.overclockersclub.com/reviews/sapphire_hd5770_hd5750/16.htm

Well it consumes like a 5770 MORE CURRENT!!!So buying a 4870 for like a couple FPS more in SOME cases would me most unwise!
Instead buy a 5770 for like 140 euros now,mod it for the hell of it or wait for the software voltmod,and then when the price drops @110 euros grab 1 or 2 of them...U ll have a 5870 in many cases with less that 260euros!

 

[Lazzer408]

Pin 20 seems more likely to be better!IMO anyway!will try something definitely when i get my hands on one of these next week!I allready have a couple of 100kohms waiting!!!!!

I'd start with a pin and a jumper for testing. This way ATI doesn't see any solder change to the chip legs. Who knows if they even look. You just need to keep that warranty alive until you figure it out right?

Well it consumes like a 5770 MORE CURRENT!!!So buying a 4870 for like a couple FPS more in SOME cases would me most unwise!
Instead buy a 5770 for like 140 euros now,mod it for the hell of it or wait for the software voltmod,and then when the price drops @110 euros grab 1 or 2 of them...U ll have a 5870 in many cases with less that 260euros!

Absolutely. I wasn't suggesting a 4870 instead of the 5770. The cooler running lower power 5770 is a better choice in that respect. I just used a 4870 as a reference to the 5770s performance. The 5870 (or even 5850) over a 5770 is worth saving for imo.

 

[theorw]

Absolutely. I wasn't suggesting a 4870 instead of the 5770. The cooler running lower power 5770 is a better choice in that respect. I just used a 4870 as a reference to the 5770s performance. The 5870 (or even 5850) over a 5770 is worth saving for imo.

Well maybe u are right in the 5850 IMO,but if u buy now a 5770 say @140E u can sell it easy for 100E in a month or so,after having raised money and grab a 5850 right?

 

[Lazzer408]

Well maybe u are right in the 5850 IMO,but if u buy now a 5770 say @140E u can sell it easy for 100E in a month or so,after having raised money and grab a 5850 right?

Whats an E?

 

[Tatty_Two]

Whats an E?

Euro

 

[W1zzard]

€, Ecstacy, E math notation, music note

 

[theorw]

Euro

Most likely

€, Ecstacy, E math notation, music note

All correct

 

[Lazzer408]

Euro

I was kidding.

 

[theorw]

I was kidding.

I know

 

[Tatty_Two]

I was kidding.

We dont use the stuff here, it's too much like Monopoly money and sadly has a similar value

 

[theorw]

I'd start with a pin and a jumper for testing. This way ATI doesn't see any solder change to the chip legs. Who knows if they even look. You just need to keep that warranty alive until you figure it out right?

Man i should never solder exactly on the pin!!!
I d find a resistor connected to it and solder on it!
Plus here we dont ship back to ATI for RMA.We ship on the local shop where they dont bother to check for modded bios or previous soldering!
I desoldered this
and put the stock cooler back on and i RMAed it and got 111euros refund!So dont worry!!!