Which one Gtx 580 or 6970

I'd say go with the 580 if you can spare the cash.

Definately go the 580, its totally worth it.

Well, we don't know your resolution. Hard to say if its a waste but at 1080p you likely won't notice much difference. The nVidia card is faster, but for me its not $150 faster. If you are building a monster rig and you want to brag to everyone about how many frames per second your getting, than maybe vanity is worth $150.

1920x 1080

Get 2x6970 and use the extra money to upgrade your monitor.

Bf3 likes nvidia better. 580>570>6970. If you wanna save money go with the 570.

At this point in time w/ next gen cards on the horizon, getting another card in the future depends much just on when that future is. When ya think of a a 580 for $480 getting 616 fps in Guru3D's gaming test suite and two of these getting 862 fps (40% more) for as little as $410 ...... , getting two cards now starts to look perty attractive.

http://www.newegg.com/Product/ProductList.aspx?Submit=E...

I currently Have the Asus Gtx 560ti But i was going to sell it to my little Brother Is it worth just getting a second Gtx 560 Ti? Don't it get better Fps then a 580?

The problem with getting a second GTX 560 ti is that i cant get a damn SLI bridge they never come with the cards.

The GTX 580 is about 15% faster than the GTX 570 while costing about 50% more. I don't know why people recommend it.

The are supposed to come with any motherboard that is capable of SLI but you should be able to buy one for $10 or so.

yeah my msi motherboard supports SLI but i didnt get one What size should i buy if i order another 560 ti

As long as you avoid the tiny ones that is only for single slot cards I would think any would be fine.

for BF3, a single HD 6970 or GTX 570 will do the Job, even your current GTX 560Ti will run BF3 with 50+ FPS and you'll be more than just fine if you do some overclocks.

if you don't wanna experience the SLI issues and the massive drops in FPS....etc I suggest you go with a single powerful GPU such as the GTX 580 or better wait for the new AMD HD 7K GPUs, said to be released on December 6, the high end HD 7K series are equipped with the new XDR2 rambus memory which is twive faster than GDDR5, besides the 28nm process and 1 GHz GPU frequency.

Yeah but i heard if you SLI powerful cards such as the 580 or 6970 they don't have like any problems is this true

Aside from drivers and hardware configuration, when running two GPUs in SLI/ CF you might experience what's called " Microstuttering" explained recently by tomshardware, this issue is more noticeable with low end GPUs configurations such as HD 6850s and barely noticeable with powerful GPUs (GTX 560TI & HD 6950) and higher.
when going with a 3-way SLI/CF the "Microstuttering" never existed.
http://www.tomshardware.com/reviews/radeon-geforce-stut...

So like i said i wont notice it at all when Crossfiring 6970s?

no not really, so you're going with 2 6970s ? what's your full system specs ?

If your planning on CF/SLI in the future then of the two options you mentioned the 6970 is definitely the better choice (You can get 3 6970's for the price of 2 580's and they even outperform 3 580's in many games). The 580 is the faster single card, slightly, but it is expensive. If you want bang for your buck forget the 580. jyjjy has a good point.

You can buy a SLI bridge on ebay and they are cheap, the flexible ones are great for difference in gaps between the cards.