Just got a 9600GT .. need help

Hi everyone, I just bouhgt myself a XFX 9600GT 700M 515 MB Graphic Card.
I had a 7950GT before, and I thought a score of around 5000 in 3D MARK 06 was too low, and I lagged extremely much on low quality on Crysis.

Now that I tested my 9600GT with latest drivers, I got 7214 points in 3D MARK 06, which I became pretty disappointed to look at.
in Counter Strike Source my fps jumps between 50-100fps.

My computer specs is:

XFX Nvidia 9600GT - graphic card
AMD Athlon 64 X2 4600+ - processor
Twinmos 2GB PC5400 - memory
Samsung 500gb 7200rpm - hard drive
MSI K9N Diamond 590 SLI - motherboard
Windows Vista

My computer is not more than a year old.
Could I get any help?
I don't think I'm supposed to get so low score and low fps.

I'm playing at 1280x1024 resolution.
Well I have seen alot of other people getting much better score with much worse computer specs, and 50-100fps on CSS is just too low.
I have seen 7800GT cards getting stable 200-300fps with the same resolution and graphic settings as me.

World of Warcraft - 40-60fps with all settings maxed, 1280x1024, can drop down to 20 fps sometimes, and that's not what a 9600GT should do.
Crysis - 10-30fps with all settings on High and 1280x1024 resolution.
Call of Duty 4 - 30-60fps with 1280x1024 resolution.

make sure your pci-e slot is running at full 16x bandwidth.
what clocks do you have on your processor? is there two CPU usage graphs when you open task manager?
your crysis fps sounds right, so maybe your card is being starved of CPU power.
what are the specific scores in 3dmark (CPU, SM, ETC.)

I'm not so good with computers so I don't know how to check if I'm using full 16x bandwidth.
There is two CPU Usage graphs yes, what do you mean clocks? it's 2.4ghz.
I just ran a new test, and my score is:
SM2.0: 3629
HDR/SM3.0: 3952
CPU: 1654

I don't really hope it's my CPU, since then I'll not resist buying a new one

Those Crysis framerates are normal, especially considering the default mode for crysis in Vista is DX10.

with my system(see sig), all settings high 1280x1024 DX10

32bit
Average FPS: 38.94
Min FPS: 18.46, Max FPS: 51.61

64bit
Average FPS: 38.51
Min FPS: 21.30 , Max FPS: 51.54

A friend has a similar setup to yours
X2 3800
K8N-Neo4 Plat.
2gigs of PC3200
Evga 9600GT

3DMark06: 7401(with GT OC @ 790/1000)

Your CPU really is the bottleneck same as my friends.
My suggestion is to run it in DX9 mode, Go to Games from start menu, Right click on Crysis and select Play DX9

Your mobo and CPU are your bottle neck. The card is doin what it can with what you give it.

Get a AM2+ mobo or get a Intel Mobo and CPU with 1333 FSB.

I would have to agree with roadrunner, I have:

EVGA 9600GT Superclocked edition - graphic card
Intel Q6600 quad - processor
OCZ 2X1GB PC6400 - memory
Seagate 360gb 7200rpm SATA- hard drive
Gigabyte P35-DS3L - motherboard
Windows XP(32)

I am scoring 10880 on 3dmark06 with my system and we have essentially the same vid card. With nothing OC'd.

okay thanks for all your replies, I know now that it's all hanging on my cpu. I read some WoW forums saying there is some wrong with 8000 and 9000 series with Nvidia when playing WoW, so that might be my problem for low fps there.
I also read that some games work more in 1 core esspecially on AMD cpu's, and doesn't use the full power of a dual core, and since a single core for me is 2.3 GHz AMD, which is really bad, could explain why my framerates are so bad.

Well as far as I know, this could be wrong, but that's what I read at least.