Abnormally Low G3D Mark Scores - CPU Bottleneck?

[Realisk]

Hey there. So I downloaded Performance Test from PassMark to determine my G3D Mark score. I ran the 3D graphics test and my 3D Graphics Mark results were 1550, way below what I was expecting by looking at this chart: http://www.videocardbenchmark.net/gpu.php?gpu=Radeon+HD+5870.

The chart says the Radeon HD 5870 averaged a score of 2751. Now, I am a complete noob, but either I'm not understanding the test correctly, or something about my build is seriously bottlenecking my GPU. But, when I run the G3D test, Real Temp says my CPU load is only at 35%.

My Build:
Radeon HD 5870 - 1GB
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102872
Intel Core 2 Quad Q6700 2.66GHz (OC@3.20GHz)
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115027
G.Skill 4GB Ram
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231122
650W PSU
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005
Motherboard GA-P35-DS3L
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128059
Hard Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136218

Any help would be greatly appreciated!

 

[Helltech]

What do you get in 3DMark11 performance?

 

[Realisk]

Results on next post...

 

[Realisk]

3D Marks says my score is normal, so I guess PassMark or the G3D marks charts were just off.

And I guess my CPU is not bottlenecking b/c my 3DMarks score is the same @3.2GHz and 3.0GHz.

3DMarks Score: P4238 http://3dmark.com/3dm11/3376293 - CPU Overclocked @3.2GHz
3DMarks Score: P4223 http://3dmark.com/3dm11/3376376;jsessionid=1rucln1do8pfd123rgo5itx733 - CPU Overclocked @3.0GHz

Comparisons: http://3dmark.com/compare/3dm11/3376293/3dm11/3376376

Can anyone confirm? or else I'll always be second guessing myself, lol.

 

[Realisk]

I really don't get it though. This one scored P5452 3DMarks with the same card, but his CPU is 5.0GHz. Why don't I get higher scores when I raise my CPU overclock?

http://3dmark.com/3dm11/1684418

 

[Helltech]

Well he has a much much better CPU, and you didn't increase your CPU by enough to make a real difference.

 

[Realisk]

Ah ok, lol. Thanks, I think I get it now.
I did another test at stock speed on my CPU (2.66GHz) and scored P4120 3DMarks.

http://3dmark.com/3dm11/3376475;jsessionid=uysnblgkebmz1c5izpben1liy

So 3.20Ghz down to 2.66GHz = 118 drop in score. P4238 vs P4120, still seems kinda low.

 

[Helltech]

http://www.tomshardware.com/reviews/amd-catalyst-driver-performance-increase-radeon-hd-5870,2872-3.html

 

[Realisk]

Good stuff, thanks again.
I got up to P4331 3DMarks by increasing the GPU OC a bit more.
http://3dmark.com/3dm11/3376721;jsessionid=d6po6j9okftd6sizn2167ii4

I guess this will have to do for Diablo 3 and Guild Wars 2

 

[Realisk]

Sweet, got up to P4462 with a bit more OCing on the GPU.
http://3dmark.com/3dm11/3378136;jsessionid=pjz8n0irw09to599ofbjl643

GPU OC is turning out to be way more effective than CPU OC.