Graphic cards

[tk2910]

Is there much difference in the cards mhz and memory? like some have 1 gb and is 880mhz, then you have 2 gb and 750mhz, how do you know you have a good card for EG. gami ng.....does the expensive card mean is is a good card. Like I was looking at this card for gaming Gigabyte Geforce GTX590, 3GB GDDR5, PCI-E 2.0, 2x 384Bit, Mini DisplayPort compared to the Radeon 6990

 

[psyxix]

The memory is in mb or gb and it relates to the number of information it can store (in 1 and 0). The Mhz is the speed at which they process the information (Write/Read). The more the Mhz, the faster they are, the faster they process information.