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Send message Joined: 14 Dec 09 Posts: 161 Credit: 589,318,064 RAC: 0 |
Keep an eye on VRM temperatures, they often get missed/forgotten about in the concern over Core temperature. Its the VRMs that cause 5970s incorrectly handled to burn out, as there is a very wide difference between core temps and VRM temperatures on a 5970. The 5970s have an inherent design issue that causes this, but does bare watching for in a 6970 (and upcoming 6990) until it becomes clear what the situation with the new design is. The current GPU-Z doesn't show VRM temps. Therefore, the other variables are my only guide here:(. The question is that will it be possible to run 4x6970 with stock speeds of 880? Well, you will definitely need a cool room for that and considering these temps, i dont think a room temperature will be enough. Does anyone have any heat issues with 6970 crossfire? |
Send message Joined: 24 Feb 09 Posts: 620 Credit: 100,587,625 RAC: 0 |
.... The current GPU-Z doesn't show VRM temps..... Yes it does - thats what the VDDC readings are. It maybe that it does not yet recognise 69xx - but VRM temps are a core function so doubt it will be long before it does for 69xx. EDIT: Had a ferret over at GPU-Z, there is a hot-fix to add 6950 & 6970 support, came out 11 Dec and will be added formally on next release. GPU-Z 6950 & 6970 Support - New exe file download Regards Zy |
Send message Joined: 14 Dec 09 Posts: 161 Credit: 589,318,064 RAC: 0 |
.... The current GPU-Z doesn't show VRM temps..... Thanks mate. Here is the temps on 2x6970 crossfired at a constant room temperature of 25C running at 950 core & +20 power tune on both cores. The 1st gpu core=72C, VRM=80C. 2nd gpu core=64C,VRM=77C. |
Send message Joined: 26 Dec 09 Posts: 9 Credit: 20,140,488 RAC: 0 |
.... The current GPU-Z doesn't show VRM temps..... i am unable to read vrm temp with gpu-z how are you doing ? |
Send message Joined: 2 Sep 07 Posts: 24 Credit: 26,244,596 RAC: 0 |
i can read the voltage, but not the temp for that. |
Send message Joined: 14 Dec 09 Posts: 161 Credit: 589,318,064 RAC: 0 |
Further details, if you let the power tune at 0, you can reduce the memory clock to 800, if you raise it to +%20, you can lower it to 850 (using MSI Beta 5). It will save you hell of heat. I think i might make a mistake. I used GPU-Z 0.50 and those temps belonged to GPU temp #3. I guess it is the VRM? Maybe i'm wrong. |
Send message Joined: 1 Sep 08 Posts: 204 Credit: 219,354,537 RAC: 0 |
Things are looking really good for the HD6950. There's an Asus BIOS out there which unlocks the shaders but leaves clocks and voltages at stock HD6950 levels - more secure and you don't loose power efficiency as with a full HD6970 bios. And using ATI Tray Tools 1.7.9.xxxx beta you can set the clocks just as you want them to. There's no Overdrive limit bullsh*t in there. Using this I lowered the memory down to 625 MHz (50%) and saw no performance impact but substantial power savings. And with MSI Afterburner 2.1.0. beta 6 (I think.. the current one) you can set voltages in software - yeha! My HD6950 is perfectly fine at 800 MHz with 1.00 V instead of 1.10 V (stock). MrS Scanning for our furry friends since Jan 2002 |
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