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8600GT overclock + Vmod

post #1 of 10
Thread Starter 
Hey guys, I've bought finally the VID card I've been waiting for a while, a 8600GT. Before flaming me for my "bad decision" of not choosing a x1950pro or a 7900GS, here is what it can do:

Stock: 600GPU/800MEM



OCed without core Vmod: 800/800



OCed with the Vgpu from 1.33V to 1.5V: 800/900



I've upped the VGPU and strangely I gained stability for the memory OC The VMOD is the one used by Shamino from VR-zone.

It can go a lot further, and this is with stock cooling. It reaches 61°C load max temperature. I'm gonna try the VMEM mod soon.

All in all I think it's a great card.
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post #2 of 10
61C isn't a whole lot for a video card You've got some room there.
    
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post #3 of 10
Nice results.
I just purchased a eVGA 8600GT off of Newegg yesterday. I'm on a tight budget currently, so I will step-up to a better card later .

Would this Vmod work on an eVGA 8600GT too?
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post #4 of 10
You'll just need to find where to do the pencil mod

Do note that it does void warranty and thus also your step-up rights.

However, they'll have to find out you modded though
    
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post #5 of 10
Quote:
Originally Posted by Chozart View Post
You'll just need to find where to do the pencil mod

Do note that it does void warranty and thus also your step-up rights.

However, they'll have to find out you modded though


I think the eVGA 8600GT has the same PCB layout as the Inno3d 8600GT, so I would have to use the Inno3d 8600GT Shamino posted and not the one for the Palit 8600GT like dragosmp used.
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post #6 of 10
Stock cooling?
 
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post #7 of 10
Thread Starter 
Yep, but it's not the Zalman cooler Shamino had, it's a copper dual slot HSF.



Still, I'm planning to change it for the VF700Cu I had on a x800 GTO.
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post #8 of 10
8600GT's are mean little cards.
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post #9 of 10
61C full load then you really don't need aftermarket cooling at all. I'd say give 1.6V a shot.

If it wasn't for your Sempron you would be beating 7950GT.
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post #10 of 10
Thread Starter 
In my OCing experiments I thought of seing how much of a performance gain would be if I OCed each separately: MEM or GPU. I was thinking of finding out if a GTS is worth it.

The results were interesting:

1. MEM OC: going up from 800 to 900 while keeping the GPU at stock 600 I raised the mem by roughly 11%. 3dmarl2006 performance gain: 3.5%

2. GPU OC: raised GPU from 600 to 700, then to 800 while the mem was constant at 800MHz. Frequency gain was then 16% and 33%. Performance gain in 3DM2006 was 10.7% and 19.4%.

3. Both combined - from 600/800 stock to 800/900 a full 25% bonus. Considering this card leaves with a stock clock advantage from the reference 8600GT (540/700) it scores quite OK.

A GTS is 675/1000 on stock... from the results above I think it may be slower than a GT 750/900, but of course the GTS can be OCed, too.


I was thinking of writing a review, I've done a couple of benches and I thought some people might find them useful.

Does anybody know how to make one on overclock.net? Is it like a simple thread with the title starting with "Review:....", or is a FAQ somewhere about this?

10x
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Centurion
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