Care to share the latest GPU-Z? I have the 0.2.6 and it does not show VRM temps. In terms of the #1/#2/#3 temps, I already ate my own words, heheOriginally Posted by W1zzard
I am using Everest now to show the VRM temps. They get pretty darn high on the 4870, as you will see later in this post...
@MonsterMash - there are no pencil vmods for the 4870, only hard mods.
Finally, an update on the latest state of affairs on my end of successes (and numerous failures) volt-modding and finally OCing the 4870 XOC BE.
I managed to stabilize the last 4870 XOC BE I got. I am currently running at 850/1150 with 1.350V on the core (core voltage obtained through volt-mod) and 1.501V on the memory (stock memory voltage). ATITool is artifact free, 3DMark06 can run all test, including features and batch tests for hours without problems. Crysis benchmark runs without a hitch as well. Still no go on the FurMark. I realized that the reason it crashes is because the VRMs get way to hot. Using Everest I read the VRM temps at the moment when crash occurs in FurMark and they are as hot as hell. In fact, they pass 125C mark when FurMark blows up, which is much too hot. Unfortunately, there is no obvious solution to me at the moment that would do a better job at cooling the VRM. I installed the HR-03 GT which comes with bigger heat sinks than those with the Zalman VF1000 and the added fan blows a bit onto the VRMs. I could mod a fan to blow specifically on the VRM heatsinks, but I do not really care. In games the VRMs never pass 95C, so I am okay with that. It seems that I will be settling on this clock unless someone can help out with the VRM temps. I can push things to 875/1150 with 1.43V on the core, but I do not see the 25MHz gain to be justifiable for added 0.08V. It's not 950/1200, but I guess it is not bad. Only thing that sucks is that no matter what a core volt-mod is required if you truly want a rock solid stable 4870 XOC BE card.
If anyone has any suggestions on what to do to lower the VRM temps some more, I'd gladly try them out. Currently, that is my bottleneck to going higher with volts on core and memory needed for higher clocks. On every cooler so far VRMs were not cooled adequately (VF1000, HR-03 GT, stock). On the stock cooler the VRMs were burning off the thermal foam that contacts them. This is the single biggest determent I think to being able to OC higher. My highest core temps never pass 62C with the HR-03 GT. The single reported core temp actually never passes about 57C.
So, any advice on improving VRM cooling to try out that does not require taping a fan to the back of the card?
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