Arctic Cooling Accelero 4870X2 Review - Page 2

I'd try and claim it on the warranty then . I don't know how to change the fan speed - it's stuck at 40% the whole time. I see what you mean about the adapter...who knows why they did it .

Those are good temps Leon, that's about what I get. And for anyone else wondering, I also get slightly increased mobo, nb, and cpu temps because this cooler doesn't dump the heat out the back like the stock cooler. Then again, I've got 9 X120mm fans in my case so it gets rid of the heat quickly.

Installed those boys on my crossfired hd4870x2, drivers 9.6, nice temperatures, but I have problems with GPU VRMs (GPU1 and GPU2 especially), idling at 70ish°C, I can play Prototype, L4D and that stuff no probs at full throttle, but when I try Call of Juarez Bound in Blood, all at max, furnace starts. The moment it finishes loading, the graphic cards start buzzing and GPU1/2 VRM temperatures jump quickly, up to 122°C then it shuts down the PC (on the other hand, the reference cooler couldn't stand more than 1-2mins after loading finished and PC shut down).
I've manually pumped up the coolers to max speed, even added little noisy devil (it has cca 80CFM, but it's like hornet) pointing straight at the VRM heatsinks and I managed to play for like 30 mins before it overheated. Funny thing is if I alt-tabbed from game to OS and watched the temperature (got it logged also, so I knew at what temperature it crashed), it dropped by cca 30°C in 15sec or so.
Any ideas how to cool those VRMs more? (a pic with location would be appreciated are those those little thingies above GPU?) I tought about buying AS5 and fiddling it on VRM - thermal pad - AS5 - heatsink, would that help? Otherwise I'm out of ideas apart from making tunnel from one of front fans right to the heatsink's fins.
I have Lian-Li Armorsuit PC80, it's pretty big and full of fans (3x 120mm intake front, 1x 120mm exhaust top, 1x 120mm exhaust rear, PSU has 120mm fan exhaust too)

those in red square, right? Why da heck do they make them so small when they heat so much, they should have put them into some kind of heatspreader
Anyway yea, seems like I'm gonna demount the cards (maybe switch them and see if the other one is heating so much too) and maybe drill the hole in heatsink a bit further so I could tighten it up more.

Yea, I was looking where those are under stock cooler, but then the stock fan has almost no fins (I'm not native English speaker, but I hope you know what I mean), and those he has are definitely not blowing downwards and the black base of the cooler is some painted shiz, interesting how it can cool better than aluminium :<

Hm, how would one explain PC shutting down then? Mine only jumps down immediately when VRM temp reaches 120°C

Hi friends.

In this spanish forum: http://foro.noticias3d.com/vbullet [...] p?t=291530

the most expert users, as much as 70% of them, are reported dead 4870 x2 due to the Artic cooling accelero xtreme...

When you install this cooler, make sure to run some software to measure and log temperatures of GPUs/VRMs/Memory, if it's getting to high, think about other way of cooling the overheating part or don't run that app which burns the parts.

I had to make wind tunnel with turbopropeller (always wanted to try that ) fan pointing at the GPU VRM1 heatsink and I can cool it to 36°C idle / 76°C load, crossfire cards, both with those coolers. It's noisy solution, but works for now, while I'm waiting for better fan to blow on the heatsink

Bit confusing that last line. Do you mean people on Tom are very lucky and are noobs?

All of ours seem to have worked so far (but I'll not forget my PSU which died after 3 months so now I'll be keeping tabs on my gpy). I've got my stock cooler and it wasn't like it didn't work so if I saw the accelero was failing I could switch it off before any damage was done and change over. Failing that I have a 8800gtx I can fall back on but I definitely can't afford to replace a card for a third time in as many years when really there wasn't anything wrong with the 8800 (reason being it came from a pc dogged with problems as already stated and l4d at the time had problems running off it too - now fixed).

Temps are running just fine for me - 40-44 idle and 69-73max full load (still at 40% fan which I don't know how to adjust but don't see the need to). All fans are working as well. I'd say 70% failure rate should mean a recall but I guess it could be people trying to overclock their systems beyond what they can manage (hence why I stay within default settings) and it's resulted in failed systems and also once you get one person saying it failed it attracts others too.

I installed this cooler 2 nights ago without any issues besides clearance in my case. I used the old screws from the stock fan and everything went in smoothly. Idle temps dropped to high 30's and VRM temps were in the high 40's. Add about 10 degrees to GPU 2 and VRM2. After a few benchmarks, running the fan at about 55%, CPU temps were high 40's and VRM was at 98+C. GPU 2 at high 50's with a VRM temp of 105 C!!. I even have a side fan blowing air onto the card.

I believe some of the dead cards can come from the pressure utilized to attached the X plates, but I believe some that have them working for a few days then dieing could be attributed to the VRM's cooking themselves. I've been doing research and even 4870 with an aftermarket cooler, whether from factory or not, are seeing high VRM's. I've also read on AMD's forum that 105C is the max temp for VRM's, and that came from AMD engineers. Though others have sited 125C being the max spec.

When I set 100% fan, my cpu temps drop about 10C and VRM1 will see high 70's but VRM2 will get up to 100C. Either the aluminum plates are not doing the job, the thermal pads are not up to snuff, or its not seating correctly. The stock sink had both VRM's in the 80's.

I'm looking at other options of cooling the VRM's. Possibly Thermalrights VRM coolers, though they look a bit too long. I'll also look at different thermal pads and re-seating the sinks over the weekend. I'll let you guys know what I find.

BTW I used the extension cable for the 6 Pin, but I went with the 8 Pin off my PSU as there was enough clearance for it. I also do not OC the card.

Hi, Although this is a thread from a while ago, I am experiencing the same with the AC Cooler, my idle temps are around 36c after being 44c with the stock which is good, though when I am in WaW the temps reach 109c (I am at work so dont have much to go on) It hangs around 100c with the fan on 100% but from reading all the threads it seems that applying AC5 has assisted.. Would be grateful if anyone as gone further to reducing temps with this cooler or if the poster of this comment above can let us know of his findings.

The only thing I can think of is I didnt tightly screw in the x-plates, another half twist and they would be super tight if you know what i mean..

I have a HAF 932 case, ton of air flowing, alaska 850w psu etc etc..

Well a bit late to the party but I got mine today and installed it. I'm very pleased with it, the temperatures and the quietness. Boy, was that stock fan loud.

I don't think it's perfect however and I'm glad I read as many reviews and comments on this before I installed mine.

The high temperature of the VRM's and other chips reported by more than one person is due to the poor machining of the small heatsinks especially. I did a test fitting of both of these and holding them up to light I could see a clear gap between the top of the pad and the sink more than once!

In these cases I reused some of the TIM's from the original cooler and doubled up to achieve enough height to reach the heatsink.

Some of the blue backing wouldn't come off some the pads either, I destroyed at least pad trying to remove it, and again had to reuse some of the original pads.

I spent about 2 hours in all fitting it some parts were incredibly fiddly especially fitting the springs to screws in the x-braces.

It was worth it though, the GPU cores idle in the mid to late 30's and the VRM's in the mid 40's. No 100+ temperatures here!

Also, can you specify on which of the chips you saw gaps where you had to use double thermal pad to reach the heat sink? thanks.