Comparison of video cards

discboy321 · Apr 7, 2013

I am looking at this card "GIGABYTE GV-R775OC-2GI Radeon HD 7750 2GB 128-bit DDR3 ,http://www.newegg.com/Product/Product.aspx?Item=N82E16814125453. My question is what does the 128 bit mean ? vs a card with 256bit ? I am rebuilding a computer for one of my nieces and even though she is 10yrs old they sure seem to play a lot of games and I just want them to be satisfied. Is there a web site that details what it all means ?

imomun · Apr 7, 2013

the 128 bit or 256 bit stands for memory bus the card has, which effects data transfer which translates in to gaming performance, normally 256bit is better than the 128bit.

Also the type of memory is important the one you linked is gddr3 2gb but this is gddr5 1gb which will provide much better performance even though both the card has same 7750 chipset.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814102969

Thanks

discboy321 · Apr 7, 2013

That is very Interesting. I was not sure what the diff was with the ddr3 vs ddr5. Both cards seem similar.

bloc97 · Apr 7, 2013

DDR3 is an older standard used for General System RAM, which can have a RAW bandwidth of 19.9 GB/s, while GDDR5 is the newest standard used for Video RAM, which theoretically can be 4x faster at the same clock speed, since it runs on QDR (Quad), and not DDR with DDR3. GDDR5's speed is 48 GB/s.

Also, Usually for a mid-range card like the HD7750, don't pick the one that has more RAM but less speed. Always speed/quality over quantity in computers!

You can read more about video RAM speed here :
http://en.wikipedia.org/wiki/List_of_device_bandwidths#Video_RAM

Hope it helps!

,
-Bloc97

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Comparison of video cards

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