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*** Official 7950 Ice-Q Owners Club***

ViRuS2k said:
Q for you guys, i must have messed up on my optimized bios and set the power limit wrong
and im throttleing,

what settings do i put in this picture ??? so that i will get no throttling at all on the card...
even with any overclock.

r95e.jpg


these must be the default power settings of the bios, what settings do i put so i get no throttling at all

EDIT: never mind i just ripped out a bios from somewhere else and read it for correct no throttleing power settings ;)

173 it is :)
Click to expand...

Hello noticed you asked about efi did you manage to get this added to the bios for secure/fast boot?
 
LtMatt said:
If you have any questions fire away. I already wrote a bios flashing guide for these cards here. ;)
Click to expand...

Think I got it! I was getting throttling in games where the cards were lowering core speeds, I applied your bios Matt.rom from the link to both cards, set the power % to +30 in afterburner and since then everything is running much smoother, usage in Crysis 3 after an hour or so showed I was getting high 90% most of the time with few dips.

Temps and Power draw seem lower as well (I have a wall plug that monitors power usage, before the bios switch I was drawing about 525 watts for everything, afterwards I was using about 425. Before the switch I would hit up to around 83 degrees as well with only 65 degrees or so after.

Is that because the default BIOS draws more power by default?
 
Eulogy said:
Think I got it! I was getting throttling in games where the cards were lowering core speeds, I applied your bios Matt.rom from the link to both cards, set the power % to +30 in afterburner and since then everything is running much smoother, usage in Crysis 3 after an hour or so showed I was getting high 90% most of the time with few dips.

Temps and Power draw seem lower as well (I have a wall plug that monitors power usage, before the bios switch I was drawing about 525 watts for everything, afterwards I was using about 425. Before the switch I would hit up to around 83 degrees as well with only 65 degrees or so after.

Is that because the default BIOS draws more power by default?
Click to expand...

The default bios has massive amounts of voltage at stock, 1.250v. Its massive overkill for stock clocks of 925/1250. As an example at 925 core all i need is 1.038v to be stable. The Matt.rom bios you used has the stock voltage lowered to 1.175v. I didnt want to lower it too much more asi wanted to make sure everyone could run it without issue. 1.175v is still overkill but will reduce temps a fair bit. It should still allow some decent overclocking as well. You can always reduce the voltage via afterburner now if required to lower temps further. Oh yeah with the new bios you can now control voltage through afterburner.
 
Spent yesterday enabling EFI for boot screens on my Mac Pro.

Need to change offset 235 to 00 from 80 in a hex editor and correct the checksum.

My BIOS now is:

975/1400/1125mv with 25% to 45C then 55% at 70C then 100% at 85C.

Might lower the 3D voltage to 1100mv instead of hitting 1000mhz core.
 
Just got to sort out the dodgy flickering textures I see sometimes. For example I tried the Tomb Raider benchmark settings from the thread here (http://forums.overclockers.co.uk/showthread.php?t=18523138). If I use TressFX Hair quality her hair is just a flickering mess!

I tried with Crossfire off and both cards are fine after that, so it's only with Crossfire enabled that I see the problem.

Also sometimes seeing flickering shadows in Crysis 3, though I wondered with that if it was just the game itself.

Any ideas anyone?
 
That sometimes happens in the Tomb Raider bench, its a bug i think. It never happens in game. Sometimes its fine though, just seems like luck of the draw. As for crysis 3 not sure on that, didn't see any when i played it. Is this at stock or overclocked?
 
LtMatt said:
That sometimes happens in the Tomb Raider bench, its a bug i think. It never happens in game. Sometimes its fine though, just seems like luck of the draw. As for crysis 3 not sure on that, didn't see any when i played it. Is this at stock or overclocked?
Click to expand...

A bit funky stock or overclocked tbh so not convinced it's a problem with over clocking too much or at all. It's fairly minor I'll see if I can grab a video or something.

If I run the cards at 1050/1400 it doesn't seem stable although I just realised that ULPS enabled itself after I updated to the latest drivers so will turn that off again.

Temps seem fine so I guess I may need to up the voltage a bit to give it enough juice. Do you have settings I can use for a stable 1100/1500?
 
I use 1.175v for 1100/1500 on my 7950's. Probably best to start off at 1.2v and see if you can work your way down.

I hope you tested to make sure your memory can run that high firs though.
 
Eulogy said:
Recommended tests to run sir to check the stability?
Click to expand...

3dmark 2011 is a good place to start. Leave the core/mem at stock. Run the bench, note your score/gpu score. Bump the memory 50-100mhz and try again. Once your score starts getting lower or the benchmark freezes or crashes you know you reach the limit. Back off 50mhz or so and test some games.
 
Well the more I clock my RAM up (leaving core at 925mhz) the lower my scores seem to get?

Recorded some data below. GPU usage maxes out on the GPU tests as expected. Stranger and stranger!

925 // 1250 - P14503
Graphics Score 17850
Physics Score 9894
Combined Score 8495

925 // 1300 - P14404
Graphics Score 17767
Physics Score 9884
Combined Score 8309

925 // 1350 - P14371
Graphics Score 17772
Physics Score 9814
Combined Score 8267

925 // 1400 - P14396
Graphics Score 17719
Physics Score 9852
Combined Score 8399

925 // 1450 - P14270
Graphics Score 17808
Physics Score 9448
Combined Score 8278
 
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