Set fan speed for ATI 48xx cards

Motoman · 18th Aug 2008, 06:58 AM

...I originated none of this, but:

Control Fan Speed of YOUR NEW Radeon 4850/4870 - Graphic Hardware - Forums - www.atomicmpc.com.au

Since I just built 6 rigs for a gaming center, and noticed that the 4850s run effing HOT, I gave it a try. Under normal settings, the fan is nearly silent - but idle temp was 77C! I bumped it to 50%, and the fan is clearly audible but not bad (for a gaming rig), and the idle temp dropped to 53C in less than a minute and I stopped watching.

Mac Daddy · 18th Aug 2008, 07:05 AM

First off 77C is way to hot idle but on fan settings does CCC not allow those changes?

Motoman · 18th Aug 2008, 12:30 PM

Quote:

Originally Posted by Mac Daddy

First off 77C is way to hot idle but on fan settings does CCC not allow those changes?

Not as far as I can tell. But you can easily feel the heat from a 4850 at idle...it's amazing hot hot they run. I could easily believe the 77C number.

After a couple minutes it dropped to 51C.

I am sure that someone is going to come out with an aftermarket cooler for these things - but really, just running the existing fan faster makes a massive difference.

To be honest, I would not be comfortable at all running them at stock settings. That's just asinine...77C!

Lacus · 18th Aug 2008, 03:03 PM

gonna come up with a guide for this

...helps cold down the card a lot

.

Mac Daddy · 18th Aug 2008, 06:59 PM

Lacus I can't wait Bro it would certainly be helpful to members

Quote:

Originally Posted by Motoman

Not as far as I can tell. But you can easily feel the heat from a 4850 at idle...it's amazing hot hot they run. I could easily believe the 77C number.

After a couple minutes it dropped to 51C.

I am sure that someone is going to come out with an aftermarket cooler for these things - but really, just running the existing fan faster makes a massive difference.

To be honest, I would not be comfortable at all running them at stock settings. That's just asinine...77C!

It just seems out of place to me. Adrian just reviewed a 4870 with a nice dual slot cooler and I doubt aftermarket air cooling is going to make much of a difference. Don't get me wrong they perform very well overall. Still odd on the fan speeds as well

Motoman · 19th Aug 2008, 02:50 AM

...well, the 4850s have single-slot designs...would probably help a lot if they had the dual-slot 4870 cooler, but they don't.

Mac Daddy · 19th Aug 2008, 07:57 AM

Quote:

Originally Posted by Motoman

...well, the 4850s have single-slot designs...would probably help a lot if they had the dual-slot 4870 cooler, but they don't.

Well Lacus traced this to BIOS and seems those cards don't reduce clock and mem settings at idle

Motoman · 19th Aug 2008, 08:06 AM

Quote:

Originally Posted by Mac Daddy

Well Lacus traced this to BIOS and seems those cards don't reduce clock and mem settings at idle

While that is valid, it also would have helped if they didn't try for a single-slot cooler on the 4850s. And/or opted for more air movement. The fan on them now (I got Sapphire models) is dead quiet at stock settings, but is noticeable at 50% - probably obnoxious at 75%. I see no reason why they couldn't put a better fan on the single-slot cooler to move more air without causing too much noise. Other than cost, I would reckon.

I'm happy with the value the 4850 brings to the table...just wish I didn't have to edit XML files to get them to operate at reasonable temperatures.

Unixlord · 19th Aug 2008, 09:56 AM

The stock fan on the first series of 8800GTs was also silent on auto (which would stick to 29% then jump to a very high speed when temps got beyond a certian point). Without ventilation openings of the underlying expansion slots it easily idled at a blistering 71c!

Now I've got absolute silence with fanspeed down halfway and I'm idling 41c on a hot day with a good <39 scaling as ambient temps drop. (It's 39c right now)

Oh by the way. You really should try the thermalright hr-03-gt on the 4870. It will definitely keep the load temp in the 50s and with a good fan even lower. I've heard wonderful things about this cooler.

goldfries · 19th Aug 2008, 02:05 PM

Quote:

Originally Posted by Motoman

To be honest, I would not be comfortable at all running them at stock settings. That's just asinine...77C!

77c? in my test it was done in a good airflow casing and air-conditioned room. 73c on idle 90c on load.

goldfries Gainward Radeon HD4850 512MB DDR3 Graphic Card Review - HOME OF THE ORIGINAL PC BUYING GUIDE

luckily we could just edit the XML file.

18th Aug 2008, 06:58 AM	#1 (permalink)
Motoman Warming up Join Date: 13 Jan 2008 Posts: 75 Reputation: 62 Rep Power: 0	Set fan speed for ATI 48xx cards ...I originated none of this, but: Control Fan Speed of YOUR NEW Radeon 4850/4870 - Graphic Hardware - Forums - www.atomicmpc.com.au Since I just built 6 rigs for a gaming center, and noticed that the 4850s run effing HOT, I gave it a try. Under normal settings, the fan is nearly silent - but idle temp was 77C! I bumped it to 50%, and the fan is clearly audible but not bad (for a gaming rig), and the idle temp dropped to 53C in less than a minute and I stopped watching.

18th Aug 2008, 07:05 AM	#2 (permalink)
Mac Daddy Pickin' Da Gitfiddle Join Date: 19 Nov 2007 Location: Canada Posts: 2,048 Reputation: 802 Rep Power: 12	First off 77C is way to hot idle but on fan settings does CCC not allow those changes? __________________

18th Aug 2008, 03:03 PM	#4 (permalink)
Lacus Super Active Join Date: 28 Mar 2008 Posts: 1,026 Reputation: 166 Rep Power: 3	gonna come up with a guide for this ...helps cold down the card a lot . __________________ GUNDAM 00[CPU=Intel Celeron Dual Core E1200 (3200Mhz)\| Mobo=Asus Rampage Maximus Formula (Rampage Bios Mod)\| GPU=Gigabyte HD4850 512MB GDDR3+T-Rad2 \| RAM=4x1gb DDR2 800Mhz Corsair XMS2 \| HDD=Western Digital WD6400AAKS 640GB \| Soundcard=Doom's Creative X-FI XtremeMusic \| Speakers=Creative Inspire P5800 \| PSU=Silverstone Strider ST56F \| Keyboard=Creative Prodikeys DM \| Mouse=Logitech MX518\| Casing=Lian Li PC-7YCF]

19th Aug 2008, 09:56 AM	#9 (permalink)
Unixlord I'm a regular Join Date: 26 Jun 2008 Posts: 291 Reputation: 98 Rep Power: 1	The stock fan on the first series of 8800GTs was also silent on auto (which would stick to 29% then jump to a very high speed when temps got beyond a certian point). Without ventilation openings of the underlying expansion slots it easily idled at a blistering 71c! Now I've got absolute silence with fanspeed down halfway and I'm idling 41c on a hot day with a good <39 scaling as ambient temps drop. (It's 39c right now) Oh by the way. You really should try the thermalright hr-03-gt on the 4870. It will definitely keep the load temp in the 50s and with a good fan even lower. I've heard wonderful things about this cooler. __________________ Intel E8400 @ 3.6GHz 1.23v load + Zerotherm Zen FZ120 \| ASUS Rampage Formula \| G.Skill PI 2x2GB DDR2-1066 \| Gainward GeForce 8800GT 700/1000/1750 + Zalman VF1000 \| PC Power and Cooling Silencer 750W \| Thermaltake Armor VA8003SWA Last edited by Unixlord : 19th Aug 2008 at 10:12 AM.

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19th Aug 2008, 02:50 AM	#6 (permalink)
Motoman Warming up Join Date: 13 Jan 2008 Posts: 75 Reputation: 62 Rep Power: 0	...well, the 4850s have single-slot designs...would probably help a lot if they had the dual-slot 4870 cooler, but they don't.