Can I SLI these two cards?

this will work fine

Thanks for the info I am debating to sell the pny which is new in a sealed box or pair it what will I notice in my games? I play delta force extreme and call of duty. Thank you.

If you are playing at a low resolution you will not see a lot of change but if you are playing at higher resolution like 1920 x 1080 you will get smoother game play more FPS.

O I think that is higher than my native res on my 22" LCD. I just checked I play at 1680x1050 so most likely no advantage right

You would get advantage in few games like Crysis and Metro2033 but not much in most others. The GTX260 is still a very good card for that resolution.

The easiest way to see if you'd get a boost is if you notice any slow downs in games. If you have low FPS in games you play, then the extra GTX260 will help. If however everything feels smooth, there is little point in adding it in. It will only increase heat, power draw, etc.

Perhaps psycho, but will he see it? At 1680x1050 his one card might be getting around 90FPS. (split the numbers listed.) Thats still faster then his 60hz LCD can show. How much more speed does one need? As mentioned there are some games that will need the extra help, but as I mentioned unless he's feeling the need for more speed he doesn't really need the second card.