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Upgrading my HD 4850 Cooler

J

jarlaxlecq

Weaksauce
Joined
Jun 23, 2003
Messages
77
So i picked up a Sapphire HD 4850 card and i love it, however i'm not thrilled at how hot it gets, paticularly since the room my PC is in isnt as cool as i'd like it. As such i picked up

This
http://www.newegg.com/Product/Product.aspx?Item=N82E16835118037

it seems that its compatible with the HD 4850, i'll report back on if it lowers the temps of my card. Right now playing wow its hovering around 84C
 
The 4800s have the same mounting patterns as the 3800s, so that cooler will fit fine, though make sure you cool the PWMs as well. You should see a very large drop in temps once you install it.
 
I put the same zalman on my MSI 4850 2 days ago. Install was easy and it dropped my temps to 35Cidle and 53C load.
 
WiKiD said:
I put the same zalman on my MSI 4850 2 days ago. Install was easy and it dropped my temps to 35Cidle and 53C load.
Click to expand...

any suggestions as to what i should put on the power chips by the plug (i forget what they are called)
 
jarlaxlecq said:
any suggestions as to what i should put on the power chips by the plug (i forget what they are called)
Click to expand...

right now on my 4850 i dont have anything on those chips and im just cooling them with a side case fan. the card is stable so far.
 
jarlaxlecq said:
any suggestions as to what i should put on the power chips by the plug (i forget what they are called)
Click to expand...

I used some ramsinks from a pervious cooler i had bought. I have also seen people hacksaw the copper portion over the PWM area and re use it.
 
jarlaxlecq said:
any suggestions as to what i should put on the power chips by the plug (i forget what they are called)
Click to expand...

They're called VRMs(Voltage Regulation Modules). Ideally, you should put some RAMsinks or other small heatsinks on them, although if you don't have anything handy you could probably get away with not having any sinks as long as there's some airflow passing over them.
 
Accelero S1 + extra heatsinks (for example you can buy same heatsinks as you get for memory modules in S1) + one 12cm fan. Period. No need to search for better solution, this is the cheapest and most effective way.

graf.jpg


Czech review of this combination is at (even pictures talk for themselves):
http://www.extrahardware.cz/forum/viewtopic.php?f=38&t=1895
 
paticularly since the room my PC is in isnt as cool as i'd like it.
Click to expand...

Your room will not be cooler because you put a bigger heatsink on the 4850 - it will still put out 110W of heat.

You could try replacing the TIM on the stock cooler with AS5, and tweak the fan speeds slightly - you don't have to run it at 100%, just a little faster than default can make a huge difference without making the card noisy.
 
Thanks for the linkage! Set it at 45% fan speed and my idle temps at 500/750 are down to 52C from 80C. I tried 50% fan speed to get to under 50C but the noise was more noticeable. 45% to me sounds nearly identical to stock with nearly 30C temp drop!!! Think at this fan speed my Arctic Silver is making more of a difference (only dropped a few degrees after putting it on at stock speeds).

I don't think that my fan ever would ramp up speeds automatically when I'd stress my card so I'm interested to see what my load temps are now. Maybe it'll be low enough to start checking out some OC'ing.

Can't wait until I can get a way to drop my idle speeds that doesn't involve me flashing another manufacturer's BIOS or editing it since I'd probably mess it up.
 
just intalled the S1 REV2 on my 4850 tonight

I cut the original heatsink for the power chips

Running cool and quiet at 36 degres idle :)

30062008275.jpg



30062008276.jpg



30062008277.jpg
 
I just picked up two Zalman GV1000's and they dropped idle to 38c. Not too bad except the fan noise is not good enough so the blocks will be returned.

Can you run CF with the S1 blocks? Something tells me it will not work.
 
faugusztin said:
DSC00200.JPG


Needs a bit of hard work, but it is possible.
Click to expand...

Since you need both crossfire connectors with the 4800's, I don't think it will work as the heatpipe appears to be blocking the path fo the leading CF connector.
 
Anything that might still qualify as single slot cooling?
 
Noetic said:
Anything that might still qualify as single slot cooling?
Click to expand...

So far, finding a single slot waterblock setup that has the same mounts seems to be the only way, as most aftermarket air-based coolers are dual slot. At least that's what I've been finding.

http://www.hardforum.com/showthread.php?t=1318936

This is mysetup, for those interested. I'm getting 37-39C idle. I tested the ATI overdrive and managed to hit 690/1188 through the auto-tune feature. But I'm not running it in Overdrive currently. I'm remaining stock for the moment until I have some "Aaaw, crap!" money set aside in the event I hose it.
 
R1ckCa1n said:
Since you need both crossfire connectors with the 4800's, I don't think it will work as the heatpipe appears to be blocking the path fo the leading CF connector.
Click to expand...

Does ATI say it needs both? I have both mine on just because, like a lot of people, that's what we see in the reviews, so we did it. But I've seen people arguing about it, haven't tried taking one off myself.

That said, where can those longer crossfire cables be found?
 
success!!

Before

Coolerinstalls003.jpg


Coolerinstalls005.jpg


Coolerinstalls008.jpg


Add this

Coolerinstalls004.jpg


Equals This

Coolerinstalls006.jpg


and this

Coolerinstalls010.jpg



Finished shot

CoolerInstalls011.jpg



Works Great!! Before my Videocard was idling in the mid 70s, load in was as high as 87C with my case closed

now?

idles at 39C and under load its 54C

a MONSTER difference.
 
just for kicks i let ATI Overdrive auto tune my card and it toped off a 690mhz core and 1180mhz memory.

i'm pretty happy with the change, especially since my E8400 is also hitting 4ghz :)


I love my new pc

4ghzlolz.jpg
 
looks nice, fyi though: next time dont put the video card on that cloth or whatever it is. static kills pc components.
 
jarlaxlecq said:
idles at 39C and under load its 54C

just for kicks i let ATI Overdrive auto tune my card and it toped off a 690mhz core and 1180mhz memory.
Click to expand...

Well, HD4850 Accelero S1 rev 2 + fake 13,5cm Yate Loon fan (i will never know what brand it really is) running at 660-700RPM = 40-42 celsius in idle (no wonder in these hot days) and in load between 50 - 58 celsius (why so wide range ? GPU usage with TF2 is only at 40-70%, which pushes temperatures only to 50-51 celsius. On other side, using AtiTool's "Search for artifacts", which uses card for 96-100% pushed temperatures up to 58 celsius but not higher).
 
I just picked up a visiontek 4850 + a DuOrb. Anyone have experience with one of these? ^^
 
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