Fanless Geforce4, success thus far!

Leo V

Diamond Member
Dec 4, 1999
3,123
0
0
I like a quiet gaming...err, working environment and those pesky little videocard fans annoy the bejesus out of me. As my system profile shows, I have one 80mm Panaflo fan cooling the entire PC including the PSU. But since I wanted a "real" Geforce4, I decided to make a little modification:

I got the cheapest, lowest-clocked Ti4200 (gainward 64mb version). I also bought a "new" Alpha PAL6035 copper/aluminum heatsink along with Arctic Silver thermal adhesive.

I removed the stock HSF. (Gainward's rounded HSF isn't particularly noisy, but it makes *some* noise and we can't have that! ) I used a flat piece of glass to thoroughly lap the Alpha surface. Once it was perfectly flat, I put the sandpaper on the back of the Alpha and used it as a sanding block to lap the GPU. Once both mating surfaces were flawless, I proceeded to glue them with a thin layer of Arctic epoxy. I'll post some pictures upon request.

I compared results by first measuring temperatures on my "old" videocard, Creative GF2 MX 64-bit DDR. That card shipped without even a heatsink. I attached a thermal sensor to the top of the card, opposite of the GPU, and observed:
-Idle, case open: peaks out at 74.0C
-After playing GTA3 for a while w/case closed (real test): peaks out at 81.0C
Please note that I wasn't overclocking the GF2mx and never experienced problems at these temperatures. There is no evidence that they are too high for the GPU to handle, because I used the gf2mx exactly as it shipped.

Using the same method of measurement, my results from the GF4 Ti4200:
-Idle, case open: 72.0C
-After playing GTA3 (with more demanding video settings--800x600x32 QFSAA) for several hours w/ case closed: 82.0C
-Idle temp w/case closed seems to stabilize at 78.0C after the heavy load
I never experienced any glitches or abnormal behavior, so it seems that everything is working as it should.

So these temps appear to be within an acceptable range. I could get much cooler temps with greater air circulation in my case (which is currently minimal). I'll see if my card will fry in the next week, but things are looking good so far, and sounding even better!
Leo
 

Mingon

Diamond Member
Apr 2, 2000
3,012
0
0
Watercooled geforce 4ti 4200, running core at 300mhz 36c peak tempretures all in a koolance case. Shame I cant find any watercooled heatsinks.
 

Leo V

Diamond Member
Dec 4, 1999
3,123
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0
I'd get one of those, but it doesn't seem to be any quieter than your usual PC. It seems to benefit mostly overclocking.
 

joohang

Lifer
Oct 22, 2000
12,340
1
0


Yeah. That's basically what turned me away from Koolance.

BTW, I'm going to Korea in August so I might go and check out one of those CALM PC cases. It's too bad, though. They still haven't made a dual CPU version yet. :|

I might just end up ditching that idea and give this a try:
Linkie to my old thread
 

AGodspeed

Diamond Member
Jul 26, 2001
3,353
0
0
Ooh, those are some high temps. But then again, that system must be near silent!

Btw, nice mods on your workstation.
 

Leo V

Diamond Member
Dec 4, 1999
3,123
0
0
Thanks! The temps are a little disturbing, and maybe I'll get a CALM system eventually like joohang, or at least a 2nd Panaflo.

Since my PSU is running somewhat hotter (higher power usage and more interior heat), it causes the Panaflo to spin faster and make itself heard. So right now it's not really 100% silent anymore. I think I'll move the Panaflo to its original location (exhaust duct) and add a second Panaflo below the CPU heatsink to move air upwards.
 

joohang

Lifer
Oct 22, 2000
12,340
1
0
Leo,

Since you are one of very few ears in this forum I can trust is the 75GXP in SilentDrive audible at all? Especially that annoying idle spin noise. I think I asked you this before but I'd like to know what you think now.

The Seagate Barracudas are supposed to be even quieter than the IBM, right?
 

Leo V

Diamond Member
Dec 4, 1999
3,123
0
0
joohang,
I've just spun down my HDD to test. I practically can't tell the difference. The fan accounts for the vast majority of the noise right now. The SilentDrive practically blocks out all the high frequencies of 75gxp's spinning sound. The seeks are also inaudible because I used the acoustic management. So the combo works flawlessly, although it's pushing the heat safety margin.

The BarracudaIV, they say, is quieter and possibly faster than 75gxp. It's probably my next upgrade, since I'm running out of room on 30gb
 

joohang

Lifer
Oct 22, 2000
12,340
1
0
My Maxtor may be overheating in the enclosure. The noise level of the drive appears to have gone up over the year.

I might grab myself one of those 'cudas (they are sooo cheap and sooo tempting ) and see how much quieter this rig will run. I still prefer dumping everything in the closet and running long BNC wires for monitors and USB 2.0 extensions for DVD-ROM, CD-RW and keyboard/mice. The ultimate silence.
 

Leo V

Diamond Member
Dec 4, 1999
3,123
0
0
Charles:
I heard that these butterfly heatsinks aren't really scientifically designed for best performance. For example, they use pure copper but copper doesn't transfer heat into air as well as aluminum. I don't see any reason to believe that it would do a better job than the tried-and-true Alpha. Even their page admits that a fan is needed for power-guzzling videocards. So I'm suspicious regarding the benefits they offer.
Leo
 

ianfan

Junior Member
Nov 16, 2000
19
0
0
Just wondering, do you have any temperature measurements before you removed the stock HS&fan?
 

Charles

Platinum Member
Nov 4, 1999
2,115
0
0
Leo:
How did you mount the heatsink to the graphic card? Isn't it heavy? By the way, did you check out my Slim PC specs?
 

Leo V

Diamond Member
Dec 4, 1999
3,123
0
0
ianfan, I did not. I had already lapped the GPU and Alpha surfaces at home before arriving to campus and didn't want to mess up my work. Certainly the temps would be much lower.

Charles, the weight doesn't seem to be a problem at all. The Arctic epoxy seems to have no trouble holding the Alpha, and the card doesn't bend the least bit under the weight. Nice slim PC

Still, I agree that the temps are alarming. If I had to do this again, I would instead use a low-profile Alpha (which I have) along with a slim 60mm low-speed Panaflo. It would be substantially quieter than default HSF and cool more. Too bad I can't unglue the epoxy :-D However, I can add a fan to the PAL6035 and overclock it to 300MHz
 
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