Cooling Leadtek 6600GT AGP

j_eckel · Post by **j_eckel** » Mon Feb 07, 2005 4:57 pm

Hi everyone.

Does anyone here have a Zalman VF700 on a AGP Leadtek 6600GT? The Zalman site says that it should fit every 6600 GT, but I'm worried about that not so little heatsink next to the GPU.

I'd appreciate any other cooling/silencing suggestions for this very card.

olyar15 · Post by **olyar15** » Mon Feb 07, 2005 8:58 pm

It will fit fine. However, the RAM chips are very close to the GPU, so the stick-on RAM heatsinks that come with the Zalman won't fit without modification. I used a Dremel to cut down some of the fins on the RAM sinks to clear the Zalman fan.

j_eckel · Post by **j_eckel** » Tue Feb 08, 2005 4:25 am

Thanks for the reply, olyar.

Just to make sure: So the heatsink marked in the picture below does not interfere in any way with the VF700?

olyar15 · Post by **olyar15** » Tue Feb 08, 2005 11:33 pm

Yup:

j_eckel · Post by **j_eckel** » Wed Feb 09, 2005 8:08 am

I mounted the VF700 on the Leadtek yesterday and just like you showed in pic, the HSI heatsink was no problem.

I couldn't fit the tiny RAM-sinks though. I don't have dremel so I tried to mod them with just with a set of pliers, but that didn't work so I decided to run the card without them. The RAM is right below the main heatsink + the temp dropped about 4 degrees at 5v so hopefully there shouldn't be a problem.

dentaku · Post by **dentaku** » Wed Feb 09, 2005 1:45 pm

So, is it much quieter than stock?

The only reason I haven't gotten one is that it's been quite hard to get an aftermarket heatsink that's ceratin to fit a 6600GT AGP because of the odd mounting holes and extra heatsink.
I wouldn't mind getting the MSI 6600GT AGP and putting that cooler on it.
I don't care if I have to hack away some of the small heatsinks.

How do those ramsinks attach, is it some kinda sticky heatsink compound?

j_eckel · Post by **j_eckel** » Wed Feb 09, 2005 2:17 pm

dentaku wrote:So, is it much quieter than stock?

It is much quiter than the stock sink of the Leadtek 6600 GT (which is supposed to be one of the most silent 6600GTs). It is not 100% silent though, but it's pretty damn good in my opinion.

It also does a very good job keeping the card cool. At 5v, temps dropped 4 degrees compared to the original Leadtek HS/fan. Just for fun, I ran my comp without the front bezel today (SLK3000 case, front grill cut out, fan holder removed) and the temp dropped 3 degress more. Conclusion: With good airflow this baby should be able to keep the 6600GT cool even if the fan would be slowed down below 5v. On the other hand, with that kind of airflow, maybe passive cooling would do the trick? Gah, does this never end..?

How do those ramsinks attach, is it some kinda sticky heatsink compound?

It´s some kind of thermal tape. Don't know how well it works though.

Gunslinger74 · Post by **Gunslinger74** » Fri Feb 18, 2005 9:29 am

Is the card stable though? i read on Zalman's site they dont' reccomend as it could be "structurally unstable".

Did it seem rough on the 6600GT when you installed? or?

j_eckel · Post by **j_eckel** » Thu Feb 24, 2005 3:47 pm

Gunslinger74 wrote:Is the card stable though? i read on Zalman's site they dont' reccomend as it could be "structurally unstable".

Did it seem rough on the 6600GT when you installed? or?

It feel very safe and stable. The Zalman cooler is not very heavy.

mattpwill · Post by **mattpwill** » Sun Feb 27, 2005 9:47 am

Is it the AlCu or the Cu that you have that's not very heavy? Is there a site comparing the AlCu to the Cu, as the Cu version is a fair bit more expensive?

wumpus · Post by **wumpus** » Sun Feb 27, 2005 11:55 am

maybe passive cooling would do the trick?

I was wondering the same thing. The 6600gt is the next logical step up from the 9600xt, which definitely CAN be cooled passively.

Try it! As long as you're monitoring temps, I doubt anything bad will happen.. particularly considering my 6800gt has a "core slowdown threshold" of 120c (yow!)

wumpus · Post by **wumpus** » Sun Feb 27, 2005 12:03 pm

Also consider that the 6600gt mentioned in this thread is sold passive out of the box, so even vendors think this is possible..

Pic:

Not very large, either!

j_eckel · Post by **j_eckel** » Sun Feb 27, 2005 12:53 pm

mattpwill wrote:Is it the AlCu or the Cu that you have that's not very heavy? Is there a site comparing the AlCu to the Cu, as the Cu version is a fair bit more expensive?

It's the AlCu that is not very heavy. It's 180g and the Cu-version is 270g.

I haven't seen any head-to-head comparison between the two coolers, but the general consensus on discussion boards like this seems to be that the AlCu is the better choice because it is cheaper, lighter and cools just about as well as the Cu.

j_eckel · Post by **j_eckel** » Sun Feb 27, 2005 1:01 pm

wumpus wrote:Try it! As long as you're monitoring temps, I doubt anything bad will happen.. particularly considering my 6800gt has a "core slowdown threshold" of 120c (yow!)

According to ForceWare my 6600GT has a threshold at 127c! That kind of heat tolerance makes me think that these cards could be cooled passively with a beer cap...Can a videocard really take that kind of heat?

burcakb · Post by **burcakb** » Sun Feb 27, 2005 1:34 pm

I heard a rumor that Saphhire will start turning out 6600GTs with built on VF770. Don't have any idea whether it'll be AGP or PCIe

dentaku · Post by **dentaku** » Sat Mar 05, 2005 5:11 pm

burcakb wrote:I heard a rumor that Saphhire will start turning out 6600GTs with built on VF770. Don't have any idea whether it'll be AGP or PCIe

If it's AGP they might have a customer in me (if I can find one in Canada).

dfrost · Post by **dfrost** » Tue Mar 08, 2005 4:06 pm

Rojak has data in this reviewcomparing the VF700 in AlCu and Cu varieties. He concludes that the CU model at 5V does as well as the the AlCu model at 12V.

Cooling Leadtek 6600GT AGP

Cooling Leadtek 6600GT AGP

go to see it works

Re: go to see it works