clock spped memory speed??

im looking at these to cards

XFX GeForce 7600 GT XXX 590MHZ 256MB 128BIT 1.6GHZ DDR3 PCI-E Dual DVI-I TV Out RoHS Video Card its a 164 $ can

Maximum Resolution
2560 x 1600 (Digital)


GPU/VPU
NVIDIA GeForce 7600 GT


RAMDAC
Dual 400 MHz


Pixel Pipelines
12

Memory


Memory Type
GDDR3
128-bit


Video Memory
256MB


Core Clock
590 MHz


Memory Clock
1600 MHz

Connections


Interface Type
PCI Express


Interface Speed
16x


Connector(s)
Dual DVI
HDTV/S-Video


Multiple Monitors Support
Yes


or

EVGA E-GEFORCE 7600 GT PCI-E 256MB VGA DVI-I HDTV Out Video Card

133$ can

Performance
NVIDIA GeForce 7600 GT
560 MHz GPU
12 Pixel Pipelines
400 MHz RAMDAC

Memory
256 MB, 128 bit DDR3
1400 MHz (effective)
22.4 GB/s Memory Bandwidth

Interface
PCI-E 16X
DVI-I, DVI-I, HDTV
SLI Capable

Resolution & Refresh
240 Hz Max Refresh Rate
2048 x 1536 x 32bit x85Hz Max Analog
2560 x 1600 / 1600 x 1200 Max Digital

is the xfx gonna make a bigdiffrence in gaming and 3d aplications
since it has a bigger clock and memory speed??


or should i just go with the evega e 7600gt

thanks for the help


thaks