Cooling CPU In BTX Dell GX620

alphadogg

Member
Feb 28, 2007
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I have a Dell Optiplex GX620 (BTX format, as if being a Dell box didn't make it hard enough!) that I need to find an alternate way to cool from stock Dell heatsinks. Basically, I need to put an oversized video card in the PCIe slot, and this card overhangs into the Dell heatsink apparatus.

Has anyone successfully used an alternative? If so, what? Does anyone know of a heatsink that could fit a 775 in BTX and lie wholly within the BTX holes?

Thanks.
 

SolMiester

Diamond Member
Dec 19, 2004
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1st post?.....well done and welcome.....

You couldnt take a pic for us could you, there is not much to see on the Dell site....
 

alphadogg

Member
Feb 28, 2007
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Thanks. Although I've been reading Anandtech for at least five years+, I have somehow never posted here.

It's funny you should ask for pics, as I just came back to the thread after taking pics, thinking it would be hard to recommend anything without visual help.

Here are a couple of pics:
General View
and:
Top View

As you can see, I think it's a pretty standard LGA775 layout, but I am not sure of that. First off, the caps make things extremely difficult. The second shot tries to illustrate the overhang. Sorry for the flash washout, but it was taken exactly overhead to show just how unfortunately parallel things are. Basically the heatsink on the card is exactly above the screwholes. Given how most heatsinks go beyond those holes, you can imagine my difficulties.

PS: In case you are curious, the card is the dual-GPU (3870) ASUS card with four DVI connectors on the plate. The black aluminum heatsink case was removed for less overlap.

PPS: Yes, I could chuck case and motherboard out, but first I thought I'd check for a heatsink swap before going for a whole new system. If I can find one, it'd be much cheaper. And, the challenge satisfies my inner masochist. :laugh:
 

SolMiester

Diamond Member
Dec 19, 2004
5,330
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76
wow, the cpu socket is twisted on an angle?!.......I cant believe they have the PCIe slot so close to the cpu!.......are the holes really is different position to ATX?..

You might need to check out another cooler for the card, maybe a heat-pipe arrangement which actually has the cooling fins moved above the card....as I see no room for any cpu HS let alone a fan on top?

Is it worth it to buy another case and motherboard?.....maybe just flick it on and start with something else, sorry, I cant be of much help....
 

alphadogg

Member
Feb 28, 2007
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Yeah, gotta love Dell. I guess the design predates the big cards that are being produced these days, so that in hindsight, the design is quite poor.

Oh well, I guess my quest for a heat sink continues.

I really appreciate the attempt to help, SolMiester.