how about performance wise? all the reviews i've found were using two different rig setups, so can't really compare them properly.
295 vs 460 Top 1GB
Video Memory
DDR3 1792MB vs GDDR5 1G
Engine Clock
576 MHz vs 775 MHz
Shader Clock
1242 MHz vs 1550 MHz
Memory Clock
2 GHz ( 1 GHz DDR3 ) vs 4000 MHz ( 1000 MHz DDR5 )
Memory Interface
896-bit vs 256-bit
DVI Max Resolution
2560 x 1600 2560 x 1600