I be fairly new to pc gaming , so I get my foot wet with 2x 560 , so after decide that I like it , I decide to get a couple higher end gpus that would be good for a few year because I do not plan to build or swap component too often , so I go with 2x 680 card . I consider purchase 2x 580 sc or classify , but find out the 680 be come and would be a bit better , require less power and quieter to operate and I would not have to upgrade my PSU -lrb- Corsair ax750 -rrb- to run both card over clocked and with a over clocked CPU , which be one of the feature that grab my attention . First off , I do not care about who be king -lrb- i.e. 680 vs 7970 -rrb- ; I will leave that to those that care as it be not a competition to I . I can not compare these card because I have never own the 7970 , but it be a significant and worthy upgrade from the 560 . my setup be not complicate and do not require the sc -lrb- can over clock reference card if need -rrb- , ftw , 4gb or the Hydro version , so I do not care about they nor have all the bell and whistle ; all I need be the basic reference version and with 2 of they all game run exceptionally well with all setting max -lrb- crysis2 , Crysis , Batman ac and bf3 -rrb- with no problem . all I care about be do they work for I and the answer be a definite yes . I do not plan to go 3d or surround ; only use one monitor at the moment 1920x1200 -lrb- fp be really good -rrb- , but will upgrade soon -lrb- 2560x1600 , hd monitor ??? -rrb- . over clock these card be different than the previous generation card , but not hard at all ; just add what additional amount of gpu clock or memory clock you want on top of the standard clock . ex . if you want 100mhz more core gpu clock than standard , just add 100mhz and you get 1106mhz -lrb- 1006 + 100mhz -rrb- . the 680 be dynamic - mean the various clock speed change base on the scene in a game ; if it do not require lot of power , it down clock and vice versa . so use the clock example above , the 680 will fluctuate between say 340mhz and 1106mhz during a game as need -lrb- note : these figure be for illustration purpose only -rrb- . one thing 680 owner need to know be that you must create a custom fan curve to keep temperature below 70 \* and definitely below 80 \* to keep the card from down clock ; these be the trigger point at which the card will drop performance -lrb- see link below -rrb- . if you leave the fan curve on stock setting , the card will reach 85 \* and it will down clock accordingly -lrb- i.e performance may suffer -rrb- . the 680 will perform differently on different system as no 2 system be the same , so remember that when you see someone claim a benchmark score much higher than yours - always check they system spec -lrb- water vs air , different cpus , oc would cpus etc. -rrb- . as with anything new , you have those early adopter that be have issue with the card , but that seem to be the norm with new technology until thing get iron out . then you have those that just complain and whine about every little nicky picky thing , so you need to tread very carefully when read review . all the review site I have read show these card as be top notch , so some of the issue may be with the individual 's system or immature driver -lrb- bet on the latter -rrb- . bf3 multiplayer seem to be the game most be hope run nicely with this card from my reading , so far the game be very fluid -lrb- single campaign -rrb- for I and graphic be really nice , too . no problem for I . not a multiplayer yet - remember I be fairly new to this stuff and learning . I turn off all those AA setting in Nvidia control panel so that I can set they in the game 's menu . I can not tell you what to buy , but I can say that these card be not bad at all and will run the game mention above very well in slus with the right build . with slus , I just leave the card at stock setting , max all game setting for game play and over clock for bench only . for I , there be just no need to overclock for game right now . my 3dmark11 benchmark score : 130-155-400 -lrb- most stable clock -rrb- p16157 x7077 positive : low fan noise low idle temp -lrb- 31-32 \* -rrb- low peak temp with custom fan curve -lrb- 66 \* -rrb- . ax750 PSU run SLI easily sli - automatic max setting in all game lightweight only 10 '' long negative : fan speed cap at 85 % voltage cap at 1.175 v System Specs for reference : case : haf 932 PSU : Corsair AX750 MB : Asus P8z68 V pro CPU : i7 2600k @ 4.6 ghz Ram : Corsair vengeance 16gb - 1600 GPU : gtx 680 slus CPU Cooler : cm 212 Evo Windows pro 64 bit -lrb- ... -rrb-