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HD7950 revised with reference HD7970 PCB club - Page 35

post #341 of 847
Thread Starter 
Quote:
Originally Posted by Tounii View Post

Does anyone have the sapphire 950mhz edition on stock clocks? What are you temps when running furmark etc?

My GPU shoots up to 80degrees and VRM1 to ~100-105 just after 5minutes of running the damn thing frown.gif
Also when playing battlefield 3 with high - extreme my temps are ~80.

Case is NZXT Switch 810 with like 10 fans..



I believe they are rated to run up to 125C.

Way to hot IMO.

You may be able to lower the temps by replacing stock thermal pad with Fujipoly xtreme or Ultra thermal pad. I put the Fujipoly Extreme on my VRM and VRAM on my water cooled 950mhz Edition HD7950 and it lowered VRM temps.
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B.K.T.
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post #342 of 847
Can anyone post their real voltages under heaven load at 1300milivolts set voltage? I think my card is drooping too much
post #343 of 847
Thread Starter 
Quote:
Originally Posted by NomNomNom View Post

Can anyone post their real voltages under heaven load at 1300milivolts set voltage? I think my card is drooping too much

Is your sig old? 5870???
B.K.T.
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B.K.T.
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post #344 of 847
Thread Starter 
Quote:
Originally Posted by BababooeyHTJ View Post

Weren't you talking about GDDR5? I highly doubt that a couple hundred mhz difference in memory clocks make much of a noticable difference either way with Tahiti. Its just not an issue with these cards like it is with Kepler.

I had assumed that you were talking about the GDDR5 on the video card and not the DDR3 on your motherboard.


I was talking about GDDR5 and then switched to DDR3 ram.... My point is that I notice a difference when gaming with faster and tighter timed GDDR5 or DDR3 ram. Also if you are into competitive benching faster ram increases scores as well.
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B.K.T.
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post #345 of 847
Quote:
Originally Posted by NomNomNom View Post

Can anyone post their real voltages under heaven load at 1300milivolts set voltage? I think my card is drooping too much

I just did a quick test and saw 900mv vdroop in Kombustor. It was more than I was expecting tbh.

It might be more if I were pushing higher clocks.
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post #346 of 847
Thread Starter 
Quote:
Originally Posted by BababooeyHTJ View Post

I just did a quick test and saw 900mv vdroop in Kombustor. It was more than I was expecting tbh.


Mine drops some as well even though its not that hot.

I just recently learned that HD79X0 cards have a sofware controlled Line Load Calibration voltage protection setting that is in the BIOS and the next version of TRIXX will be able to disable it.

This "vdroop" problem may also partly be related to the LLC software taking over to protect the card.

Read about this LLC here: http://www.sapphireforum.com/showthread.php?30467-New-vBIOS-for-HD7950-Vapor-X&p=267750#post267750
B.K.T.
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OCZ AGILITY 4 LG 16x BD burner DT Sniper CPU block Watercool HEATKILLER® GPU-X³ 79X0 Ni-Bl  
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B.K.T.
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post #347 of 847
Quote:
Originally Posted by SonDa5 View Post

Is your sig old? 5870???

Oops yeah i have a msi tf2 7950 with a 7970 pcb. At 1.3v it droops to 1.187 v. Wonder if thats normal?
post #348 of 847
Is the H795QC3G2M still a reference board? I m considering two of these for Xfire.
post #349 of 847
Hi is there anything informative in this site? I'm trying to investigate the chinese BIOS as well

http://www.pcpop.com/doc/0/797/797156.shtml

Thanks
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post #350 of 847
Quote:
Originally Posted by NomNomNom View Post

Oops yeah i have a msi tf2 7950 with a 7970 pcb. At 1.3v it droops to 1.187 v. Wonder if thats normal?
Yes, i also have large vdrop.
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