Difference in speeds on 6200 and 6600?

Hi all,

I am doing a lot of research before buying my new gaming machine. One thing
I have come across is the difference between the 6200 and 6600 in
performance and price. Here is what I believe the cards are running in at:

6200: Core = 300 Memory = 550 Pipelines = 4 with 4 unlockable. (6200 in
Non-TC form)
6600: Core = 300 Memory = 500 Pipelines = 8. (Non GT)

Is this correct? Or am I being misled?

Thanks,

Neil

--
Gaming Rig in development = P4 Prescott @3.0GHz, 1GB PC3200, 80GB HD, 256MB
GeForce6 series card (Undecided on model yet.), Stock 350w/Colourist 400w
PSU
Desktop = P4 Northwood @ 2.6GHz, 512MB PC2100, 120GB HD, 256MB XFX
GeForce5500, Stock 350w PSU
Oldest Laptop = 486 @ 75MHz, 20MB RAM, 1.4GB HD, Unknown Integrated Graphics
Old Laptop = P3 Coppermine @ 600MHz, 192 PC100, 12GB HD, ATi Rage Pro 4MB
New Laptop = PM Dothan @ 1.6GHz, 512 PC2700, 80GB HD, 64MB ATi Mobility
Radeon 9200
All still in use!