Originally Posted by KaRLiToS
Yes yes, you know that I know that the Titan is faster
Like What? Don't tell me multi-monitors. GTX Titan will do marginal differences from GTX 780. 384bit bus is just not enough for 6 GB.
In that one [h]ardocp comparison of Tri-SLI/CFX 680/Titan/7970GE, there were multiple times where the 680's ran out of Vram, and even a few cases were even the 7970's ran out of Vram, leaving only the Titans to still run the game. Considering the 780's also have 3gb just like the 7970's, I'd assume they'd experience the non-playable repercussions of running out of VRam. Out of the ordinary, but still happens.
6GB of VRAM is Where It's At
In a 3-way SLI configuration, playing across three displays, we were grateful to have 6GB of VRAM on each GeForce GTX TITAN video card. This is the highest capacity we've seen so far on a consumer level gaming video card, but we actually experienced benefits in today's latest games with this higher amount of VRAM.
It is clear that the small 2GB of VRAM on each GeForce GTX 680 is becoming a real bottleneck for today's gaming in NV Surround resolutions. There were many instances where we had to settle on using non-RAM hungry AA settings like FXAA or SMAA. We simply weren't able to utilize even 2X MSAA in some games with the small memory footprint. On top of that, we felt it might even be holding us back from some higher in-game quality settings. It has really become a crutch on the GTX 680 if you are going to do 3-way SLI, it just isn't enough.
We are slightly better with the 3GB on the Radeon HD 7970 GHz Edition video cards. We were able to maybe set a notch higher on the MSAA belt with that extra 1GB of VRAM. However, even with that higher amount, it surely did not help with framerate consistency on the Radeon HD 7970 CrossFire setup.
Nothing beats the 6GB of VRAM on the TITAN. It was the only configuration that allowed us to play the latest games at 8X MSAA at 5760x1200. It also ensured that we were able to maximize all the in-game quality settings without it bottlenecking the VRAM. However, there are signs that even 6GB of VRAM might not be enough in a 3-way+ GPU setup. Hitman simply needs more to allow 8X MSAA to be perfectly smooth at 5760x1200.