1GB or 512MB

Hi there,

Can you tell us what resolution you will be playing games at, and what games you will be playing?

Also what are your computer's full spec's?

The answer will most likely be 1GB, unless you play at 1024x769 or below and play older games. The price difference between the 512MB and 1GB model is most likely very slim.

My computer specs are CPU- Dual core 3.0Ghz,Gigabyte G41 Motherboard,4gb DDR2800 Mhz Ram , Nvidia 8400gs Graphic card and 500watt Powersupply.

Go with the 1GB, more is almost always better when it comes to memory

You didn't mention your native resolution or games you play, anyway just go for the 1GB model.

Why on earth would you want that video card? Stick with the 8400. The Asus has DX11 and probably twice the RAM than the 8400 but I see little improvement in any gaming.

resolution is 1200x960 and i like to play Skyrim and pes 2012.I also like to know maybe 128-bit memory interface card will be more suitable for me.

@ OP what's your budget? Maybe we can pick out a more suitable solution, the HD6450 is the faster card but its not leaps and bounds faster.

If there is little in it price wise, go for 1GB.

As for the games you play, if you would like to start enjoying the graphics of Skyrim you should probably raise your budget more inline with the 6670 series graphics card (price has dropped in the last 6 months for this little budget beater). This however takes away from your subject line I appreciate - and may not be an option but for the price difference this would be my starting point when looking to upgrade from the 8400. With your processor I suspect the 6450 will still be a bottleneck to your system and you could run a 6670 card comfortably without worrying about your CPU holding it back.

I want to spend $70 and I also like fastest possible card within my budget.

please reply.

The MSI R6670-MD1GD3 Radeon HD 6670 1GB 128-bit DDR3 is available for $74.99 so is a fraction over your budget, if it means you have to wait until next month to buy it I think it's worth the wait it to find the extra couple of bucks, even if it means looking down the back of the sofa.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Alternatively if the budget really is set in stone go for at least a 6570
SAPPHIRE 100323L Radeon HD 6570 1GB DDR3 PCI for $59.99 (with rebate, $69.99 without)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

+1^ I agree, clean someone's car or something and get the extra $5 for the HD 6670.

How about Asus EAH6670/DIS/1GD5.

Please reply.

yep any 6670 will do fine, huge improvement.