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My silent system: V.2

post #1 of 13
Thread Starter 
Well, I modded my Coolermaster HyperTX hsf with a custom fan shroud to house a Nexus 120mm that I had laying around, but it wasn't quite enough to handle the 27% OC I am running. I decided to replace my HyperTX with a Thermalright HR-01-K8 passive cooler. As soon as I had that done, even though my system was overall quieter, I noticed how incredibly noisy the POS chipset cooler was on my Tforce 550, and additionally that the Coolermaster LED fans I had were not quite as silent as I originally thought.

I decided to order a second Nexus and use the pair as my only case fans, and get a Thermalright HR-05-SLI chipset cooler to match my cpu cooler. Also, the duct that came with the cpu cooler was effective but unwieldy, so I decided to build a custom solution that would be more effective.


Thermalright HR-01 and duct



HR-05-SLI and Nexus fans, fresh tube of AS5



My rosewill case, this is BY FAR my favorite of all the cases I've owned, some of them costing more than twice as much. I would recommend it to anyone.



As you can see, since the rear exhaust isn't centered on the socket I had to twist the hsf to get the duct to meet the fan without applying too much stress to the cpu. I found this cheesy.



Here in addition to the cheesy blue duct you can see the screaming loud chipset cooler just under the graphics card. I had to get the SLI version of the Thermalright chipset cooler because as you can see it's a tight fit...



I removed the blue duct and Coolermaster fans, this is a view of the grille for the rear exhaust. Notice how insanely restrictive it is... just plain not acceptable for a low cfm silent fan ducted to a passive hsf.



A pair of piano wire cutters makes quick work of the grille.



All gone.



I smoothed it out a bit with my pneumatic nibbler, I usually would have made it nice and round and perfect with a die grinder and file, but it was close to dinner and I was hungry so I said screw it.



I pulled out the mobo to mount the chipset cooler, here it is back in the case after installation



You can see why it was such a good idea to get the offset version of this cooler...



I went ahead and removed the front grille, it wasn't as restrictive as the rear one but I figured it couldn't hurt.



I was going to post some pics of me building this duct, but I got too hungry and rushed through it. Basically I took a piece of some 5" diameter 1/16" wall steel tube scrap, and cut it diagonally at the right angle to meet the hsf. I sanded it to exact size, and then welded a couple mounting tabs on to attach to the fan. Coat of black spray paint, and it looks pretty good...



Another pic of fiinished system...




So, in conclusion, my system is now near inaudible, and as an unexpected bonus the smoother duct and removal of the rear fan grille dropped my idle/load from 32C/55C to 28C/47C. The cooler case temp also dropped my gpu temp by about 3-4C as well. This is quite impressive to me because I went to lower CFM fans and still saw massive improvement from the other mods. That rear grille was really holding things back... before you could just feel a slight breeze, now you can really feel the air moving out of the case.

This was a great mod because I live in the desert and outside temps here reach 120F in the shade. Even with AC on it can be 85-90F in my room, so it gets very difficult to cool OC'ed parts for a few months. I usually have to back down my OC for summer so hopefully this year I won't have to.
post #2 of 13
Looks pretty sweet, good job
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Vostro 1500
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post #3 of 13
whoa! that's great mod man. Thanks for the idea, I might do the same for my computer. Also did this mod allow you to overclock abit more than before?
post #4 of 13
Thread Starter 
I actually can get it to run stable at 2.67, but I think I need to boost the chipset voltage beacuse it won't post past 282. I am pretty happy with 2.6 though especially since it is pulling it off w/vcore under stock. I don't really want to add a fan to the chipset cooler and it gets a bit spicy as it is so I think I'm gonna just sit where I am at. 47C load is very respectable for a room that is usually around 26-28C ambient. At idle it runs very close to ambient so I think that this is about as effecient as I can get with air.
post #5 of 13
Love that duct, pretty sweet
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post #6 of 13
Good job, Cutting the fan grill made it look pretty bad though.
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post #7 of 13
I wish I had your shop tools Been looking at a pneumatic nibbler for a while, saw one in Grizzly's catalog. Not too expensive, either. Great work!
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post #8 of 13
Thread Starter 
Quote:
Originally Posted by Chapstick View Post
Good job, Cutting the fan grill made it look pretty bad though.
Haha, it is hard to maintain a balance between available free time and getting the job done right. I actually have some really nice perforated sheet I could have made a grill from but since I am using a low flow fan I wanted the very least restriction, so no grille at all. Next time I have the case apart I'll probably spruce it up a bit... I may order some edging so it doesn't look like such a hack job.

Quote:
Originally Posted by burn
I wish I had your shop tools Been looking at a pneumatic nibbler for a while, saw one in Grizzly's catalog. Not too expensive, either. Great work!
You know, I hardly ever use it... but when I do it's a godsend. I couldn't reccomend buying one for your average joe home mechanic but for computer enthusiasts and case modders like us it really is a great investment, being that nearly everything we deal with is made from sheet metal. It took me maybe like 1-2min to clean out that hole, which would've been at least 15-20 min for a hand nibbler(plus some really tired hands).

The other cool thing is that the die is round so the nibbler will cut curves and other shapes easily.
post #9 of 13
GJ man.

So you don't got a window? Because it looks pretty neat in there.

Only a 120mm exhaust fan, and the NB cooler right? That is awesome.

Good job on a silent system!
And your temps are extremely low... you must have a really low ambient.
post #10 of 13
if I were you I would have bought the screw down kit so you could turn the heatsink wherever and then vented it into the PSU
    
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