Unable to OC a Diamond HD5770?

[Xeris]

I've been trying to OC my GPU and everytime I seem to bump up the clocks, it crashes. Even if I move it up by 10 it would still crash. MSI Afterburner wouldn't let me change the voltages to see if maybe that's what it is from. I'm going to upgrade my GPU anyway so I might as well push it so I can play D3 on max settings this Monday nightbiggrin:WOOOO:awe and then upgrade later this month. Any help would be appreciated!

 

[Don Karnage]

What sort of 5770 is it? Egg cooler or reference?

 

[aaksheytalwar]

5770s are not known to be special at oc anyway. Anyway, temps?

 

[Don Karnage]

5770s are not known to be special at oc anyway. Anyway, temps?

My HWBot record run before they disqualified it be cause i didn't show all of the required screenshots

 

[KompuKare]

Interesting Don, I too was under the impression that overclocking 5770s was not worth it. Personally I've only tried underclocking mine for 2D (but was disappointed since it seemed to BSOD as soon as I tried undervolting it below 0.99V). Do you remember what sort of scaling you got from your overclock?

To the OP: I was only able to change the voltage using the Asus GPU Tweak tool. Didn't investigate it with MSI Afterburner but maybe it needs a reg entry or an entry in it's ini.

 

[Xeris]

What sort of 5770 is it? Egg cooler or reference?

http://www.newegg.com/Product/Produc...82E16814103103
This is what it looks like. Pretty hideous. I can get you the temps when I get home later tonight. But if I recall it was alot lower than 70C on full load with stock clocks.

 

[Don Karnage]

Interesting Don, I too was under the impression that overclocking 5770s was not worth it. Personally I've only tried underclocking mine for 2D (but was disappointed since it seemed to BSOD as soon as I tried undervolting it below 0.99V). Do you remember what sort of scaling you got from your overclock?

Let me see if i can dig up my results

http://www.newegg.com/Product/Produc...82E16814103103
This is what it looks like. Pretty hideous. I can get you the temps when I get home later tonight. But if I recall it was alot lower than 70C on full load with stock clocks.

I doubt that one even has voltage control

 

[Don Karnage]

Just found it on 3dmark.

2 cards resulted in 6278 in 11
3 cards were 8855 in 11

Unfortunately never just benched 1

 

[KompuKare]

Thanks Don. Looking up 3dmark11 5770 CX scores I found one at 4297. Single a 5770 at stock is around 2600. So getting 6278 from overclocking from core and memory sounds good. I may still end preferring quiet over speed but I might give that go.

To the OP, the latest MSI Afterburner will let me adjust voltages (once the checkbox in setting is checked of course), but I didn't play with that.

 

[bononos]

Is the core or memory more important for overclocking the 5770/6770? The 6790 seems to be the same except for the 256bit memory interface.

 

[Don Karnage]

Is the core or memory more important for overclocking the 5770/6770? The 6790 seems to be the same except for the 256bit memory interface.

Both

 

[KompuKare]

Is the core or memory more important for overclocking the 5770/6770? The 6790 seems to be the same except for the 256bit memory interface.

As Don said, definitely both. Haven't tried much overclocking yet, but this is what I got trying out the Heaven benchmark earlier today (sorted in descending order of score):

Core___Memory___Scores____Score %
940____1380_____1051______113%
850____1380______976______105%
940____1200______942______101%
850____1200______932______100%

So, the memory overclock actually yielded more improvements than just the core. Both made the biggest difference. Although I didn't record it, I was keeping an eye on power usage too (Kill-o-watt) and it didn't really change more than (at most) 10W. I kept the core voltage at default though.