GeForce 8600 GT and GTS review and Shootout
By:
Hilbert Hagedoorn |
Edited by | Published: April 17, 2007
Overclocking & Tweaking
As most of you with most videocards know, you can apply a simple series of tricks to boost the overall performance a little. You can do this at two levels, namely tweaking by enabling registry or BIOS hacks, or very simple, tamper with Image Quality. And then there is overclocking, which will give you the best possible results by far.
What do we need? One of the best tool for overclocking NVIDIA and ATI videocards is our own Rivatuner that you can download here. If you own an ATI or NVIDIA graphics card then the manufacturer actually has very nice built in options for you that can be found in the display driver properties.
Where should we go ? Overclocking: By increasing the frequency of the videocard's memory and GPU, we can make the videocard increase its calculation clock cycles per second. It sounds hard but it really can be done in less then a few minutes. I always tend to recommend to novice users and beginners not to increase the frequency any higher then 5% of the core and memory clock. Example: If your card runs at 500 MHz (which is pretty common these days) then I suggest you don't increase the frequency any higher than 25 to 50 MHz.
More advanced users push the frequency often way higher. Usually when your 3D graphics start to show artifacts such as white dots ("snow"), you should back down 10-15 MHz and leave it at that. Usually when you are overclocking too hard, it'll start to show artifacts, empty polygons or it will even freeze. Carefully find that limit and then back down at least 20 MHz from the moment you notice an artifact. Look carefully and observe well. I really wouldn't know why you need to overclock today tested cards anyway but we'll show it still ;)
All in all... do it at your own risk.
I ran severely out of time with this project and was not even able to make you one more nice graph. But I do have overclock results for you guys. I placed them in this table.
Clock DEF
Mem DEF
Clock OC
Mem OC
8600 GT Galaxy
600
800
730
900
8600 GT XFX XXX
620
800
725
860
8600 GTS Galaxy
700
1000
760
1150
8600 GTS BFG OC
710
1008
750
1100
8600 GTS POV EXO
725
1100
762
1156
8600 GTS XFX XXX
730
1130
750
1110
Now we also did some testing here with Prey at 4xAA and 16xAF. I placed them in this chart:
For those that have a little difficulty reading the chart, here's the table as well:
Overclocking Prey
1024x768
1280x1024
1600x1200
1920x1200
2560x1600
8600 GT Galaxy
58
39
28
23
13
8600 GT Galaxy 730/900
61
41
30
25
15
8600 GT XFX XXX
59
40
29
24
14
8600 GT XFX XXX 725/860
62
42
30
25
15
8600 GTS BFG OC
66
45
33
27
15
8600 GTS BFG OC 750/1100
72
48
35
29
16
8600 GTS Galaxy
67
46
33
28
15
8600 GTS Galaxy 760/1150
72
48
35
29
16
8600 GTS POV EXO
68
47
34
28
16
8600 GTS POV EXO 762/1156
72
48
35
29
16
8600 GTS XFX XXX
70
48
35
29
16
8600 GTS XFX XXX 756/1110
72
48
35
29
16
Sidenote: Our overclocking results are never a guarantee for your home grown results. Manufacturers' choices in components differ often per batch and so will the end-result. This however is a good indication of what is (or isn't) possible.
Copyright (c) 1997-2008 Hilbert Hagedoorn, All
Rights Reserved.
Webdesign by
Mohsin Ali
-
Legal
disclaimer/notice
The Guru of 3D, the Hardware guru, and 3D Guru are
the trademark ownership of Hilbert Hagedoorn.