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4850 + Accelero S1 cooler....Impressive cooling solution

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Last response: in Graphics Cards
June 24, 2008 1:30:56 AM

This guy did some OCing and slapped on an Accelero S1 HS. I am in utter shock at how well this thing drops the temps and at how useless the stock cooling is.

More about : 4850 accelero cooler impressive cooling solution

June 24, 2008 1:45:11 AM

yea the accelero's are good coolers especially for passive cooling and you can purchase the turbo module for it as well. For that matter I have found all arctic cooling products to be really good and concurrently are all I use for cpu, gpu and case fans. Its good to know they fit a 4850, does that mean it will fit the 4870? I assume they will both have similar hole spacing. I didnt buy one for my 8800GT because I wasnt sure if it would fit the next gen of cards coming out and not much point spending money on card that turned into just one to get me by.
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a b U Graphics card
June 24, 2008 1:58:55 AM

Yeah that's one sweet heat sink, it's funny how when you read the Xtremesystems post you think, what a crap HSF, then you read that [H] post and you think, they both have crap HSFs.

Seriously makes you wonder about the stock cooling on these things and how much better they could do (or be clocked at launch) with just a little extra quality thrown into the build process.
Actually come to think of it, the crap HSF may be an attempt to keep some people from overclocking these 'lower-end' parts to keep them from competing with their more expensive siblings [:wr2:3] )

I haven't seen any HD4850 with an IceQ style cooler on them yet, but I'd personally prefer something ejecting the heat out of the rig, even though the Accelero is doing a fine job, I'd just make sure there's adequate additional cooling for the whole rig.
a b U Graphics card
June 24, 2008 2:04:35 AM


I'll be getting a 4850 in the next few days (or when i get back)
Stock cooler looks shyte as always, but i will wait for a Thermalright cooler. Got one atm and its fantastic, even if it does use a 92mm fan.
June 24, 2008 2:08:51 AM

The heatsink on the 4870 has heat pipes...there are pics floating aorund...wonder how good it is? That is what I was thinking though...even though it cools like no other it sill goes into your case and ups your CPU temps if the flow isn't right.

Might not be half bad
a b U Graphics card
June 24, 2008 2:31:12 AM

MMMMmmmm Copper Aaaahhhhh Coool !! :sol: 
June 24, 2008 2:38:41 AM

yeah hopefully copper, and not hte copper paint **** i have on my hd 3870.
June 24, 2008 2:42:13 AM

I am not trying to be a fanboy here...I know I will come across as one but I have to tip my hat to ATI for updating the HS to something a little more modern. They should offer this setup on the 4850 as well.

godless said:
yeah hopefully copper, and not hte copper paint **** i have on my hd 3870.

hahaha, I wouldn't be shocked if it is. NEW: Copper plated HS!! :heink:  But...I haven't heard of a fake copper heatpipe though...
a b U Graphics card
June 24, 2008 2:45:25 AM

Expect HIS and likely someone else (like Sapphire's high end Atomic / Toxic) to offer these solutions on their later HD4850s.
June 24, 2008 3:32:10 AM

I thought the Accelero was ALOT bigger than that, hmm....might outfit my two 4850's with those......but ive spent enough money, I think ill deal with the noise.
June 24, 2008 3:36:34 AM

It does make a slim fit in a passive setup but I would want to tag a fan on it
June 24, 2008 3:38:36 AM

At $30 a pop I think ill pass, not to mention having to possibly add their little fan attachment. The temps on the 4850's arent TOO bad...I mean ive seen worse, fan at 70% and its hitting around 60c full load. But then again I fully removed the coolers, cleaned everything, and reapplied using OCZ Freeze. This stuff makes AS 5 seem like cake frosting.
June 24, 2008 3:40:27 AM

hahaha, yeah that will help. I just used that on my CPU. OCZ freeze. I was surprised at how thick it was. It was like trying to spread cold peanut butter on a slice of bread....or did I use cold peanut butter on my CPU?
June 24, 2008 3:43:52 AM

mjam said:
HIS 4850 Dual slot is already available , and at a right price:

Wow. That's an extremely good deal. It's cheaper than a normal one, has the dual slot cooling, and looks pretty awesome.

That's really good. I've been looking at some after market coolers to see what would be the best for the 4850, but this seems like it would do just fine, and for cheaper.
June 24, 2008 3:50:48 AM

SpinachEater said:
hahaha, yeah that will help. I just used that on my CPU. OCZ freeze. I was surprised at how thick it was. It was like trying to spread cold peanut butter on a slice of bread....or did I use cold peanut butter on my CPU?

Yea, its a mess. But fortunatly the hassle is worth it, AC5 is over raited.
June 24, 2008 3:57:33 AM

I just don't like the hundreds of hours necessary to get it to work as it should.
June 24, 2008 4:01:31 AM

SpinachEater said:
I will let you decide :o

Probably not a job for beginners but looks like a typical GPU HS swap to me. He did twist tie a fan to it....that was probably pretty hard...

Wow, his card didn't even reach 50C and that was passively? That's insane. It doesn't even look like it'd be that good of a cooler.
June 24, 2008 4:05:23 AM

SpinachEater said:
This is how I feel about HIS ICEQ

Goodnight folks!

lol. Yeah, I used to have it on my old x800gto. It kept it nice and cool, and was pretty quiet. I'd love to have one again.
June 24, 2008 4:19:44 AM

I'm still waiting for a 4850 or 4870 with an improved version of this cooler. My 3870 never goes above 55c under load at 1680x1050, and thats during this time of year.

June 24, 2008 4:27:16 AM

Wonder if I can find IN DEPTH instructions on the installation. I DEFINITELY want my future GPU to be nice and cool. Since I plan on buying a CM 690 or CM 830 it will be a positively pressured case... so I might need to put the fan attachment on, wonder if that make the card too wide to Xfire? I have applied millions of CPU coolers, but never any GPU coolers.

P.S. can anyone link some guides to installing coolers on GPUs?
a b U Graphics card
June 24, 2008 5:22:32 AM

The 4850 has the same mount holes as the 38xx, so look for those instructions. Should be close enough. I have an S1 with fans for my 3850. I sucks to plop down extra for an aftermarket fan, but the ability to use it on a new 48xx will make it worth it. Man does it cool better than the stock 3850, and the stock 4850 is even worse!
June 24, 2008 5:37:54 AM

Do the S1 heatsinks fit on the rear components (PWM?) ? From what I've heard they're more important to be cooled than RAM modules.
June 24, 2008 6:06:21 AM

omega99 said:
Are you so sure that image is correct? There's just one 4850 listed at HIS ( and it has the standard cooler.

Dang, if you look at the other images at zipzoomfly, on the box it says it's a 3870.

That sucks, I knew it was too good to be true.
a b U Graphics card
June 24, 2008 7:30:02 AM

Yeah just give it time. At launch likely the standard Hoocha-mah-hoo HSF on it, but then later expect some changes.

I would suspect HIS will be one of the ones with an improved cooler, but likely this close to launch they're probably all instructed to use the reference design, which in this case is a bad thing IMO.
a b U Graphics card
June 24, 2008 1:11:11 PM

omega99 said:
Do the S1 heatsinks fit on the rear components (PWM?) ? From what I've heard they're more important to be cooled than RAM modules.

There is a part for the PWM included with the S1, but I don't know if that will fit on the 48xx, it didn't fit on my 3850. I haven't needed it though, the fans blow down through the heatsink and cool them well enough. I think you only need it if you are using it passively.
June 24, 2008 2:08:37 PM

Here is a post from Anand...looks like some extra work was needed.

Well, I managed to fit an Accelero S1 (Revision 1) onto one of my 4850's. The bolt holes are a perfect match. Result is a 40C drop in idle temp; beauty of it's FANLESS. 78C before and 38C after in 80F ambient air. I expect to see only a 14 degree delta between idle and load, as I did with my 3870, so max temp load should be around 53-55C, again, without a fan! I need a good 3rd party tool such as RivaTuner to get a good trendable graph of load temp (not available for 4850 yet). The S1 is a great piece of cooling gear, arguably one of the most efficient air cooling devices ever made for the PC.

The mod I am going to show is for my personal satisfaction. I don't encourage anyone to try this unless they are completely comfortable with doing so. I accept no responsibilty for any mishaps that may occur. I am providing this as information only.

I did have to hack up the stock heat so the PWM area would be covered. A nice little hack saw job did the trick. Cuts through painted aluminum nicely. There are 2 bolts holding it down so plenty of pressure.

Mod 1

Next, I used the existing thermal pads to attach the ram sinks.

Mod 2

Here is a shot of the S1 Revision 1 base (perfectly aligns with holes on card).

S1 Base

The S1 is mounted now with a thin layer of AS5 on the gpu. The PWM area sink has plenty of clearance.

Mod 3

Finished mount with Crossfire bridge poking through. I did need to spread the fins to get the bridge through.


Finally installed. Now i need another one to finish the job!


Here's an old thread of mine that shows just how good the S1 is:
June 25, 2008 4:49:52 AM

Wow...I'm pretty ballsy, but not that ballsy. Think I'll just wait for the manufacturers to release 4000 series vga coolers instead. Hopefully AC will release a new one. Perhaps the Accelero S3?
June 26, 2008 4:18:20 AM

Bump. Seeing the temps roll in today...although both 4850 and 4870 are not higher than the 8800GT...I wonder how well OCs will do with something like the accelero.