as the title says. does anyone happen to know what it is? i put the accelero xtreme 7970 cooler on my card but instead of using the glue that game with it, i used some 3M 8815 thermal adhesive tape. ive used this stuff in the past and it works really well. its takes a few thermal cycles before it sets in properly though. so in the mean time, im trying to keep an eye on the temps. thanks.
You should be ok with that cooler, in the overclocking thread a we were talking about VRM temps with this cooler iirc they hit about 70'c with a beefey OC of 1260mhz at 1.25v under full load. Did you measure your temps and see something that worried you ???
Reference design doesnt get so hot, scroll below to see infrared pics http://www.behardware.com/articles/848-11/amd-radeon-hd-7970-crossfirex-review-28nm-and-gcn.html Although this custom XFX is Hot lol, could he a bad choice of pwm/cooling http://www.hardware.fr/articles/853-14/thermographie-infrarouge-cartes-graphiques.html
The highest i've seen on the VRMs while playing games (Crysis 2 / BF3) on my 7970 (Accelero) is 60c. For some stupid reason i tried Furmmark to check the VRM temps and they almost got to 115c (1200/1600 1.16v). It's really amazing to see a 50 degrees difference from playing very demanding games to a running a GPU killer application like furmark.
Yeah i haven't tried that tbh. I ran Unigine Heaven on max settings looping for 2-3hrs to assess my temps. Maxed at 69'c on the VRM's with my Windforce, which was almost the same as another user with an Accelero (71'c iirc) got doing the same test (in the 7970 oc thread) During gaming the dont get so hot, usually ~50'c as the card isn't 100% stressed all the time. This is at 1260/6300 1.25v Scared to try Furmark/OCCT since I blew up a 570 a year or so back (or melted VRMS i should say) Ps what are you using for the OSD to display your VRM temps on screen ? I thought only HWiNFO64 could read them !!!
I know this is an old thread, but hopefully someone is still around to reply.... Hi phase delta 1, do you have any pictures of your graphics card after you fit the heatsinks, but before you fit the cooler? I'm having some VRM problems (VRM 1 reaches 115°C+, and VRM 2 reaches 98°C+.) After fitting the accelero 7970 cooler to my 280x.... I have fitted the cooler to my 7950 and had great temps, so I thought I'd do the same to my 280x, but the temps I'm getting are abysmal. Could you have a look at where I've put the heatsinks and tell me if it looks right?: Naked PCB Heatsinks fitted
You have it right way and that is btw. wrong, as in reality Accelero has worst VRM cooling ever seen. So be thankful that your card uses VRMs which have T-max 125°C (keep them below 100°C if possible as that will increase lifetime of that glue you used even when they promise 10 years of duty). Since Accelero excel at being silent my advice is to make custom fan profile. Either with VBE7 directly into BIOS or with any advanced OC software. - 50% speed till 45°C - 70% at 50°C where it becomes little bit audible - 90% at 60°C - 100% at 75°C This way it has required airflow around VRMs even if GPU does not get hot. It's curve is reversed to what normal GPU cooling would like, but it's due to fact that Accelero can nicely cool GPU even at 50% and you are targeting fast increase in airflow for VRMs not for GPU. And there is nothing wrong on creating new thread for your issue.
Thanks for the reply! Even with the fans at 100%, the VRMs reach about 100°C. Ideally, i'd want them sub 75°C like my 7950 which has been fitted with an Accelero Xtreme 7970 cooler too. I guess i will have to remove the poor quality Arctic heatsinks, and fit higher quality ones... the only problem now though is that i have used the included thermal adhesive, and the heatsinks seem stuck on for good :S
That's weird, before they gave in package dual compound adhesive which could be removed easily. if that is really single tube one and states permanent, then you can break VRMs from PCB :/ Other possibility is to glue some heatsinks on back side of PCB if your model has empty contactless space there like mine.
I actually managed to remove the heatsinks in the end! I twisted them whilst applying downward pressure so not to lift the chips at all. On the stiffer ones, I wobbled the heatsink until loose, then twisted. Then using acetone I cleaned the chips.
