• We should now be fully online following an overnight outage. Apologies for any inconvenience, we do not expect there to be any further issues.

Experiment: passively cooled mid-range video card in slim case

fuzzymath10

Senior member
Feb 17, 2010
520
2
81
I am quite proud of the parts I managed to cram into my NSK1480 (see sig). I slowly aimed to kill each stock noise-generating part with new ones as follows:

1) Replaced PSU fan with Noctua NF-R8. My warranty is void, but I tore out the terrible 80mm fan cooling the 350W PSU, and managed to shoehorn in a normal 80mm fan. Huge reduction in noise from this alone. The slim PSU is a tad underpowered but as it is reportedly made by Seasonic and is 80+ I am hoping it holds up (which it has for almost a year).

2) Replaced stock tri-cool fans from Antec with Noctua NF-R8s and Scythe S-flexes. The Scythe fans are a huge disappointment; I had two of the 80mm 1000rpm fans which were fantastic for several months until they started buzzing. I RMAed them, but Scythe could only offer the 2800rpm versions as replacement. These ones push a lot of air but buzz horribly, even with undervolting. The Noctuas age much better; they are worth the premium.

3) Replaced stock intel cooler with Scythe (Big) Shuriken. My Q8200 has a plain Shuriken and the exhaust fan is sufficient to cool it. I haven't tried that yet with my i5 2400; the 120mm slipstream fan on the Big Shuriken I installed on the i5 is extremely quiet so I don't really mind; for some reason Scythe has excellent sleeve-bearing fans but horrible ball-bearing ones, and the orientation+size of my case precludes using them for exhaust (no 80mm sleeve fans, and I'd mount them horizontally).

4) The video card was extremely tricky. The HD 5750 isn't a super-fast card, but it's much faster than typical slim cards, and the only comparable nvidia competition is the GTS 450. There are no aftermarket slim/half height coolers around, and the stock cooler had terrible 40mm fans. I took out the fans and used a Silenx 60mm fan (the largest which would fit in my case) mounted with rubber bands to the video card, but this wasn't a very safe long-term solution, and the fan, while not buzzy, was still a tad noisy for me.

I recently bought a used HD 4830 for my living room PC (in a much roomier Lian-Li A04) and was impressed by the Arctic Cooling S1 (rev 2). I found it on sale for $20 at NCIX so I bought another one to try using for the NSK1480.

Obviously it is far too big to fit into a slim case as is but I read that the heatpipes could be gently bent to fit. The result was the following:

IMGP7103.JPG


I was extremely afraid of breaking the heatpipes but with slow/gentle bending it eventually bent into a C-shape. It was very long so I had to route cables through one of the two empty 3.5" drive bays (my two SSDs are in a 2.5"-3.5" adapter allowing both to fit in one bay).

IMGP7102.JPG


After booting up, I made sure my temps didn't go crazy (since I could have mounted it poorly). Fortunately, nothing bad happened and I idle at about 50-55C, and peak at just under 90C according to CCC. This is comparable to the stock heatsink with either stock fans or the 60mm silenx. I have lost all of my other pci-e x1 slots but it's not a big deal for me.

I hope some of you find this remotely interesting :)
 
Last edited:

Concillian

Diamond Member
May 26, 2004
3,751
8
81
AC S1 Rev 2 is the best. Maybe not THE BEST, but it's the most versatile GPU cooler for quiet computing, and CHEAP.

I have one cooling my 4850 with a nexus silent fan zip tied to it. It cooled it with a rather significant overclock NO PROBLEM (when said 4850 was my main video card, I've since moved on), and with that nexus running only 7v, temps were lower than the stock cooler at max speed and I, quite literally, could not hear the fan.

Takes up like 3 or 4 slots, but who cares, not like there's anything else to put in a gaming PC. Excellent value, that cooler.

Good work with it.
 

llee

Golden Member
Oct 27, 2009
1,152
0
76
that's awesome. what sort of temps are you getting? stock clocks?
 

fuzzymath10

Senior member
Feb 17, 2010
520
2
81
that's awesome. what sort of temps are you getting? stock clocks?

Idle is as low as 40c with display off, 50-55c when in 2D. So far only stock speeds.

I once overclocked with stock cooling to 1260/865 from 1150/700. I will try that again now; I expect it to work at least at 1250/850 comfortably.
 

Zap

Elite Member
Oct 13, 1999
22,377
7
81
Wow, the mod work on the Accelero is pretty hardcore.
 

llee

Golden Member
Oct 27, 2009
1,152
0
76
you should post this at the SFF modders forum over at losias.net. i've never seen anyone just bend a heatsink like that
 

superccs

Senior member
Dec 29, 2004
999
0
0
That's pretty coolthst you got that AC gpu cooler wrapped around like that on a low profile card. Congrats and nice photos.
 

fuzzymath10

Senior member
Feb 17, 2010
520
2
81
In case anybody is wondering, I rolled it up on the floor, much like making a roll of sushi. no special tools required; just grip and press down.

It gets very hard to bend eventually, and you need to do it all at once. If you wait too long after starting to bend it (working the metal), it hardens and becomes brittle.
 

smokerings

Junior Member
Jan 30, 2010
7
0
66
That's pretty cool and that looks like a beefy little system, Good job!

I was wondering if you happen to have a picture of it bent like that before installation?
 

fuzzymath10

Senior member
Feb 17, 2010
520
2
81
@smokerings here are a couple.

@leonlee overclocking doesn't seem to be great. Got quite a few crashes/restarts at 1225/825. I need to figure out if it's the RAM or GPU because 1260/865 was doable before. I suppose I shouldn't be greedy!

IMGP7105.JPG


IMGP7104.JPG
 
Last edited:

aigomorla

CPU, Cases&Cooling Mod PC Gaming Mod Elite Member
Super Moderator
Sep 28, 2005
21,073
3,576
126
@smokerings here are a couple.

@leonlee overclocking doesn't seem to be great. Got quite a few crashes/restarts at 1225/825. I need to figure out if it's the RAM or GPU because 1260/865 was doable before. I suppose I shouldn't be greedy!

IMGP7105.JPG


IMGP7104.JPG

that is an epic bend on that gpu sink.

Have you considered getting a side blower? You can tuck it in front of the psu... have it draw air from the fins and spit it to the PSU.. so it can then be shot out the rear?

http://www.performance-pcs.com/catal...oducts_id=4423

EC-SB-F1_01.jpg


I think you should understand where im going with this...

In the hole space right in front of your PSU here:
IMGP7102.JPG



Of course... thats if u dont feel you may need active cooling.
 
Last edited:

fuzzymath10

Senior member
Feb 17, 2010
520
2
81
A quick update:

For whatever reason, it doesn't seem to like high temps very much. With the stock cooler, it hit around 90C quite frequently but didn't seem to mind.

With this mod, it was hitting 80C at load with two 80mm Noctuas pushing hot air out of the case at "50%" which is around 900rpm. With this setup, the display would eventually just shut off and freeze (no BSOD, just black screen), then restart about 10 seconds later. Once I set the fans to "75%" or around 1300rpm, the crashes disappeared. The fans sound OK at this level (just air whooshing), but still noticeably noisier.

I have a feeling something is overheating, but cannot nail it down. I doubt it's the GPU in this case, but would anybody know if it's more likely to be the memory or electrical parts?