CPU-Z captures: What is the bottleneck of my system?

[greent00th]

Can someone tell me what I can improve for the memory?
Would upgrade to Windows 7 show any improvement in system performance?

For details on the memory,
Slot 1: 1gb
Slot 2: 512mb
Slot 3: 1gb
Slot 4: 512mb

Total 3GB (all PC-6400), two pairs of two different brands.
Running on Vista 32bit which won't recognize 4gb. Dell 530 desktop motherboard allows 4gb.

 

[alyoshka]

Win7 would be an improvement over Vista 32bit...... not a massive one though.
I don't see a very staggering bottle neck in the rig at all.