GPU help

[saltmydalt]

I bought this pc recently and wanted to upgrade the GPU. I know I need to upgrade the psu as well.

 

I was thinking about getting the Asus Strix gtx 960 but I am not sure whether I should get the 2gb or 4 gb version.

 

Here is the PC: http://www.bestbuy.com/site/lenovo-desktop-8gb-memory-1tb-hard-drive-black/5958014.p?id=1219178692600&skuId=5958014&ref=199&loc=je6NUbpObpQ&acampID=1&siteID=je6NUbpObpQ-onJcCLE3Fstu2BTCUg%E2%99%A5%E2%99%A5%E2%99%A5Q

 

And I was thinking about getting this psu: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139050&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

 

Will there be a difference playing at 1080p between the 2gb and 4gb cards and which one would you suggest? (Not looking to spend more than $250 and looking for an nVidia product) 

 

Any other tips are appreciated!

[salecar3]

what is your current psu and there is minimal difrance it the 4gb model at 1080p,if you want 1440p it has vram but not gpu horse power to pull so 2gb is fine

[cheeze_tartz]

if you're getting a 4G 960, you might aswell get a 970. More RAM doesn't increase the amount of horses pulling the cart.

 

(Not looking to spend more than $250 and looking for an nVidia product) 

Just get the 2 gig version because the 4 gig version cant even use all 4 gigs without lagging in games.