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Never use an accelero

M

mkrohn

2[H]4U
Joined
Apr 30, 2012
Messages
2,345
While the core temp stays low i recently got a 7970 mining properly and the core was staying nice and cool but after dialing it in and having it run the way it should (above 700k) it lasted about 2-3 days of mining before killing the card. For gaming those coolers are fine but when you keep the card under load they simply won't cool the VRM's. The 7970 running the exact same BIOS and was the exact same model just using the reference cooler is running perfectly still.

If anybody has thoughts of mining, folding or whatever with one of these coolers DONT DO IT!
 
Which sinks did you put on the vrms and what fan speed did you use?
What temps did you get on the vrms?
 
Yeah, I just put one on my 7950 a few days ago and the core is running nice and cool but the VRM temps get to around 100C. Now I wish I didn't mess with it, but I don't think I'll be able to take off the thermal adhesive for the little heatsinks.
 
Don't some of the better accelero's come with sinks for the VRM's too?
 
Good point, he didnt say which Accelero.
This is so unspecific, it looks like a troll.
 
SunnyD said:
Don't some of the better accelero's come with sinks for the VRM's too?
Click to expand...

there were sinks on them . Is there a model number on the accelero's anywhere? It came with the 7970 that died so i didn't buy it.
 
So it came with vrm sinks.. did you put them on..

Again though, these coolers werent likley tested to run 24/7 %100 load
 
MrGuvernment said:
So it came with vrm sinks.. did you put them on..

Again though, these coolers werent likley tested to run 24/7 %100 load
Click to expand...

Came with them all on.. Had been running fine until I tuned my settings and actually got it running at 100% They had to work harder and it was apparently just too much for it to keep up with.
 
vortec4800 said:
Yeah, I just put one on my 7950 a few days ago and the core is running nice and cool but the VRM temps get to around 100C. Now I wish I didn't mess with it, but I don't think I'll be able to take off the thermal adhesive for the little heatsinks.
Click to expand...

If you are stuck, you can try this :

Put the accelero fan to 100%, run valley or aida64 burn-in gpu, and watch your vrm temps over 15 minutes.

The gpu should be fine, just check the temp difference for the vrms. If it's good, slowly decrease the fan until the vrm temp is too high. This will tell you what speed you need to keep so your card won't burn itself out.

Edit: if mining, then just mine for +/-15 mins watching those vrms.
 
Last edited:
Yakk said:
If you are stuck, you can try this :

Put the accelero fan to 100%, run valley or aida64 burn-in gpu, and watch your vrm temps over 15 minutes.

The gpu should be fine, just check the temp difference for the vrms. If it's good, slowly decrease the fan until the vrm temp is too high. This will tell you what speed you need to keep so your card won't burn itself out.

Edit: if mining, then just mine for +/-15 mins watching those vrms.
Click to expand...

So follow-up question, I've got the Accelero fan hooked into a 12v molex directly. Doesn't that mean they're running at 100% all the time?

Also, I use GPU-Z to check my temps, which doesn't run well at all during mining. Is there a better way to monitor VRM temps?
 
vortec4800 said:
So follow-up question, I've got the Accelero fan hooked into a 12v molex directly. Doesn't that mean they're running at 100% all the time?

Also, I use GPU-Z to check my temps, which doesn't run well at all during mining. Is there a better way to monitor VRM temps?
Click to expand...

GPU-z.


I use the Accelero on my GTX 460's, works fine. I just set them to 100%. The fans that come with it are pretty silent, and along with that no air flow. Take'm off and put on some 80mms with decent flow. It'll cool the vrms better.
 
vortec4800 said:
So follow-up question, I've got the Accelero fan hooked into a 12v molex directly. Doesn't that mean they're running at 100% all the time?

Also, I use GPU-Z to check my temps, which doesn't run well at all during mining. Is there a better way to monitor VRM temps?
Click to expand...

They should be running at 100% if plugged direct with no resistance plugs, and you still get 100C vrms? Oye, not good!! Got room to put a small fan hitting the back of the card? You could be surprised how much having a fan directly on the back of a card can drop vrm temps also. I would try this first before looking at removing the vrm heatsink.

I don't use gpu-z, I use Aida64 with my G19 Keyboard and/or G13 LCDs to monitor every sensor each card has, so I don't have to turn on the monitor & be super laggy. Aida64 also has fully customizable desktop gadget which is pretty nice actually.

There is also always Afterburner. Let me know if you manage to drop those vrms any.
 
Sounds like this thread and my card getting killed is going to save somebody else's card at least
 
I've got a 120mm fan pointed pretty much directly at the back of the card, less than an inch away. Even if I crank up those front fans up to 100% the VRM temps don't change much if at all.

I backed down some settings to get the card to run a little cooler in general, and that seems to keep my VRM temps in the 90's instead of 100+. Not sure if that's enough or not.
 
Quick update. I flashed the BIOS on my card to one that under volts to 0.968v at all times, and that has made a dramatic difference. With no other changes except for the under volt, the VRM temps now max out after many hours of mining at about 81F which I can totally live with. For the most part they stay in the mid 70's which is even better. Plus the core temp dropped another 10 degrees or so to the low 60's.

Moral of the story: if you're going to mine and want your cards to last, under volt them!
 
vortec4800 said:
Moral of the story: if you're going to mine and want your cards to last, under volt them!
Click to expand...

I've been saying that for years....

All these other people kill cards running them overclocked and overvolted, meanwhile I've not killed one and have been running them 24/7 for years....
 
canna said:
I've been saying that for years....

All these other people kill cards running them overclocked and overvolted, meanwhile I've not killed one and have been running them 24/7 for years....
Click to expand...

I'm a believer - I never would have thought that .2ish volts would make that big of a difference. And no performance difference either.
 
vortec4800 said:
Quick update. I flashed the BIOS on my card to one that under volts to 0.968v at all times, and that has made a dramatic difference. With no other changes except for the under volt, the VRM temps now max out after many hours of mining at about 81F which I can totally live with. For the most part they stay in the mid 70's which is even better. Plus the core temp dropped another 10 degrees or so to the low 60's.

Moral of the story: if you're going to mine and want your cards to last, under volt them!
Click to expand...
You mean degrees C not F?
 
vortec4800 said:
Quick update. I flashed the BIOS on my card to one that under volts to 0.968v at all times, and that has made a dramatic difference. With no other changes except for the under volt, the VRM temps now max out after many hours of mining at about 81F which I can totally live with. For the most part they stay in the mid 70's which is even better. Plus the core temp dropped another 10 degrees or so to the low 60's.

Moral of the story: if you're going to mine and want your cards to last, under volt them!
Click to expand...

Which card? I can't run my 280x's at 1050 core one one of my cards under 1.15 and I have several that have been runnin solid all week at 1.1v and I haven't gone back through to lower the juice more yet
 
runs2far said:
Are any cards tested to hold up to the high power draw of mining 24/7?
Click to expand...

mining no but any card should be tested against any of the best synthetic stress tests out there. Mining just happens to be the best stress test out there. Any card not designed to work under a full load is asking for trouble or made by powercolor which is by far the worst company out there
 
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