Easy 7800 GTX COOLING MOD 38C on air at idle!

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rise

Diamond Member
Dec 13, 2004
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Originally posted by: Burner127
I hope I am not being to naive, but this kind of "mod" does void the warranty, right?

evga for one allows after market coolers.
 

camotec

Junior Member
Sep 13, 2005
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Rise thats awesome info man, i had no idea they would allow cooling other than what comes packed. i will have to research into other brands etc.

You wouldn't know if XFX or Pixelview allow it would you?

Anyone thinking i am sitting on the forum all day is not far from the truth, I am on holidays from work and just kicking back and today i allocated for mucking around with my PC :D

By the way, here is an interesting tidbit, did you know that the Forceware 80 drivers will improve performance 20-30% just from installing the drivers alone? nVidia says that this increase is because of re-written code to talk correctly to AMD X2 & Pentium D chips.
Forceware Version 80.40 is the driver version and apparently it has been leaked, that should get you well up over the 9000 3dmark05 ceiling Cronic heh :D

Cheers
Ben
 

JEDIYoda

Lifer
Jul 13, 2005
33,986
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Yes this is an awesome mod!!!
With that said -- those of us who do o/c we understand and accept the consequences of our attempts to o/c!

Yet there are some who do not work or are to young to work or still living under there parents roofs that we need to mention that things like this do void the warranty!
We never know who might try this not understanding that if something goes wrong they are SOL!!

Anyways -- gotta love Cronic for his willingness to share what he digs up!!

Its party time!!!

 

camotec

Junior Member
Sep 13, 2005
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Very true Yoda,

I have 5 hours till the wife gets home from work... so I might go read a book and watch some dvds or somthing.
Yeah thanks Cronic for bringing this to light :D

Cheers
Ben
 

cronic

Golden Member
Jan 15, 2005
1,782
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my pleasure guys, i'll always post useful mods that i run across quick question camotec. how long have you had the 4400 at 2.6 and is it prime stable(2 instances). i only ask because mine was for about a amonth. then i dropped it to 2.4-2.5 and is peime stable. i can still run 2.6 for benchmarking but one core just doesn't preform as it did when it was new.
 

camotec

Junior Member
Sep 13, 2005
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I have been running 2.6ghz almost since i got it about 5weeks ago or so.
I am sitting at about 35 degrees C at the moment just in windows but thats cause i have had the heater on all day and the ambient temp is about 20 degrees C.

Actually its cause of the way i have positioned the tower it now sits behind my lcd and the inlet for the CPU is sitting right behind the vent for the LCD so its sucking warm air.
I will soon fix that though :D

**EDIT** There we go back down to 31C

Cheers
Ben
 

Pl0p

Member
Sep 14, 2005
25
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If you keep your stock fan and keep the cover plate on their and you make the mod suck air, you can fry the stock cooler as it over revs :)

Hey very nice mod, and i'm going to do this as well on my two 7800GTX's... I only have to check up front if i'have the space for it.
 

BATCH71

Diamond Member
May 5, 2001
4,613
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I just mounted my NV5 and hard wired the fan to the PCI-E connector.

Evga 7800GTX runs 500/1300 all day long, had it at 500/1400 with a few minor glitches.

41 degrees as we speak, I love them damn NV5s and so does ASUS.

Nice case mod by the way :)

Dave
 

BonzaiDuck

Lifer
Jun 30, 2004
16,617
2,023
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Great thread. Does anyone know if they make a tip-magnetic fan in an 80mm size?

At some point, additional CFMs pushed through the fins of the heatsink will yield no improvement in cooling. But getting rid of the dead spot under the fan-hub -- definitely worth it.

Incidentally, Cronic, Congratulations on a really nice job with the Stacker. That is schweet.
 

cronic

Golden Member
Jan 15, 2005
1,782
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thanks guys. i believe rma stands for return Merchandise authorization. i used wire ties to attack the spacers to the fan and then wire tied the fan to the card. by the way, i killed my 7800gtx doing a volt mod. anybody need one for parts? i guess its back to the 6800ultra for a while. i've got my eye on one of the asus 7800gt dual cards that will be avaliable in very limited numbers.
 
Apr 17, 2003
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cronic, people can really learn from you

you risk a piece of hardware by overvolting it, it dies, you take your loss and move on
 

Covak

Junior Member
Sep 29, 2005
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0
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Yay for this mod. I could run 3Dmark05 all day long at 76 C, but then with the F.E.A.R single-player demo I'd see my GPU hit 80 C within a minute and lockup. Also locked up once with DoD: Source. It seems to be the shader-intensive stuff that was pushing it over the edge.

Tied on a stock A64 fan and presto. It now hits 61 C tops (in F.E.A.R., the best GPU stress tester I know of). Such a sweet improvement from something so simple :)

Damn that fan gets loud, though.

P.S. Is locking up when your GPU hits 80+ C unusual? I've heard of cards running a bit hotter without a problem. The air flow in my case does suck, so the ambient temp gets up there. I'm hoping that's all it was (since that's easily fixed).

(running a BFG 7800 GTX at the stock 460/1300, btw)
 

Covak

Junior Member
Sep 29, 2005
3
0
0
Originally posted by: Corporate Thug
it shouldnt lock up at 80

I forgot to mention, I also had the exact same problem with a 6800 GT (not BFG, stock speeds), and that was with a different motherboard and PSU. Basically, if I let it get up to 80 C (which happened when I let the fan get way too dusty), it'd just lock up.

Anyone got any ideas?
 

Covak

Junior Member
Sep 29, 2005
3
0
0
I just had another one of them crashes tonight. GPU at 61 C. I guess it was never the GPU at all, so nevermind :)
 
Mar 11, 2004
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Wow that is a pretty nice mod.

As for voiding the warranty, it depends on what brand of card you have. I think eVGA's warranty would still cover this mod, as its supposed to cover change of the heatsink and also overclocking.

Imagine if they had a nice copper heatpipe cooler on there. I wonder how cool a 7800 with that new thermalright will run.