2x GTX 680 OR 1X HD 6990

first of all 2x 680 will not be 4gb vram, it will be 2GB vram...
so if your system uses 3 monitors or more those extra 2GB could be a big help.
A single 680 have almost the same performance as one 6990, so 2x 680 are much better performance wise than a single (already 2 gpus) 6990 that is why it costs more, but you must check about your resolution, 2gb may not be enough for big resolutions, so a good thing would be waiting for the 4gb 680, but if you play with 1 screen the 680 is a much better price/performance, a single card will get very close to the 6990 and SLI'ing them you will get a monstruous system...

So is the 6990, 2GB per GPU. Therefore is an incorrect statement.

Mouse is correct... both options have only 2 GB of usable vram

A single GTX 680 is roughly as powerful as a 6990. Get that. If you want 2 of them, go for it. Nothing currently is limited by 2 GB of vram, though it's always possible it could happen in a year or two.

Personally, if I were to shell out $1k on graphics cards, I would get the 4 GB version, just to be sure that vram will never be a bottleneck, even though there's not really any advantages at the moment for doing so.

The 590 and 6990 are bad purchases right now.

Defo 2x680s.

The 6990 is terribly hot and loud, and the 680s uses low power, and performs incredibly good

My monitor is a apple thunderbolt 27 inch 2560x1440 so 2 gtx 680 will be kinda better plus i play bf3 crysis mw3. gtx 680 supports 2560x1440 so 2 will be better i think but post your opinions

lol mw3... that's one of the least graphically demanding games you could mention - I hope you're not buying new graphics cards to play that.

Anyways, every modern graphics card supports 2560x1440. And like I said, a single 680 is comparable to a 6990, and 2 680s obviously will blow it out of the water.

Specs:
CPU:I7 2600k 4.4 Ghz plus noctua NH-D14 cooler
RAM:corsair vengance 8 gb
supply:thermalake toughpower grand 1200W
case:coolermaster HAF X EXTENDED ATX
mobo:asus maximus 4 republic of gamers
storage: OCZ DENEVA 480GB ssd x5

i think i should wait for 4 GB gtx 680 and buy 2 of them

I tough he was saying about a 6990 with 4gb each card, since that is not the case so yes, it is the same memory (2gb) for each.



I am talking about the big resolutions, high resolutions will requires more VRAM to load all the textures on the geometric object... so yes if he is PLAYING with the 3 monitors (Eyefinity) more than 2gb can help in the performance.

if you can wait yes, that is a good option and if you are in a hurry you can go with the 2gb version it will be already good enough since you are just using one monitor 2560x1440 they will run already without VRAM bottlenecks.

Check out this review, you should be fine with 2gb at that resolution only get the extra vram if you plan to do a 3+ monitor setup.
http://www.hardocp.com/article/2012/03/28/nvidia_kepler...

sli gtx 680 2GB will do quite well spanned across 3 monitors. Read part 2 of the Tom's review on th gtx 680.

but 3 monitors at what resolution? maybe 1080p. but 3x 2560x1440?

also at what antialiasing settings? this also add a lot of VRAM load.

of course it will do very well, but on some games more specific like metro2033 you may loss some performance due to the VRAM on a multimonitor Setup...

like i have said before, for one screen 2560x1440 @OP will be allright with 2gb

+1 this is what I would do

There's no need for the 4 GB now, but it would suck big time to have games in 2 years that are choked out by 2 GB vram.

Just ask 460/560 SLI owners how things are working out for them... 1 GB vram was plenty a year or two ago but there are now starting to be scenarios where 1 GB just isn't enough.

For SLI setups, I say better safe than sorry on vram. That 4GB Palit Jetstream 680 looks reallllllly nice  

I think you should wait for 680 4gb. You can't get 680 anyway. I've been trying for weeks and stock is so limited that by the time you hit submit order there is none left in stock.

http://www.tomshardware.com/reviews/geforce-gtx-680-sli...

5760x1080, ultra, 16xAF, 4x MSAA gets 56 FPS in bf3 to answer your question. I prefer AMD personally but I just wanted to show you what the 2GB cards can do. Keep in mind the 3GB 7970 only loses 10fps by enabling 4xMSAA in that benchmark and the 2GB gtx 680 loses 22fps by enabling 4xmsaa. The 680 also only maintains that framerate on the center monitor while throttling it to a lower level on the peripheral monitors to maintain a higher framerate. At that resolution the huge FPS loss when enabling 4xMSAA and the fact that only the center monitor maintains a high framerate are reason enough to wait for the 4GB version if you have the budget and the patience.

yes and that is only at 3x 1080p screens, the performance drops even more on 7680x1440 that would be 3x @OP screens...

the 680 is very powerfull you can see the results there, but the performance drop due to the VRAM bottleneck is pretty big.

Can i overclock them both to 1200MHZ because i got a 1200W power supply

Dude, Personally if your only using 1 27inch monitor.... I would only get 1 GTX 680. Its all you need and i am positive it will max our your games just fine.

if the question is, will my psu handle 2x 680 overclocked?, the answear is yes, your psu is good enough for that, but how much overclock you can get is other thing, i just recommend you not to overclock any reference card unless you really know what you are doing, but if the question is about your PSU, yes it will handle SLI 680 overclocked.

A 1200W PSU is nice overkill for a 2 GPU setup, you can do anything you want with overclocking.

27 inch?? LOL sORRY i meant 80 inch 1920x1080 full hd tv
4 HDMI ports and supports 3d

...



 

CAN I RUN 2 GTX 680 ON 1920X1080 80 INCH TV?

1920 X 1080 is 1920 X 1080 whether it is on a 10" monitor or a 140" TV. So yes you can run 2 GTX 680, but it is overkill for that resolution. But hey, it's your money. And by the looks of your rig (5 x 480GB SSDs !?! come on....for real?) you have the money to burn. But then, maybe there is a troll in the house....

My money is on this.

My media PC has a 560ti driving a 82" Mits no problems.

Screen size does not matter how @maui67 said, the resolution is what requires more from the GPU, since they are 1080p yes the gpu will handle it very well.

And yes, you can even enable the 3D by using the nvidia 3DTV Play software or other third party 3D driver/softwares. also the 3D via HDMI only works at 1920x1080 24hz or 1280x720 60hz, but that is other stuff...

Wait until mid may and get two 690s in SLI, mid may is what all the rumors are saying!

2 690s= quad 680 SLI= Awesome Power!!!

i really doubt that 1 690 will be 2x680, that would make not much sense, i think it will be more like the 580 and the 590, the 590 is better but not as good as 2x580...

and if they really are 2x680 probably the price will be more than double since it is a "compressed" version.

Tell me about it! Bought my 1250W for two 6990 and an overclocked i7 990X and my system power consumption never exceeded 900W while running both 6990's overclocked during benchmarking. Of course, there really wasn't any strain on the cpu at that point. Definate overkill for two gpu setup.

I have a 1200W too, and an 850W. Currently using the 850, 1200W for tower server maybe?

Where did you read that. I did not see it in the review you gave and never heard it anywhere but from you. Do you mind posting a link?