valleron2010 :
WildCard999 :
No, I would hold off for now.
are u sure?because of the 3.5 memory limit,upcoming games will run fine at ultra textures?
It's more then enough. Here's a good article you should read when you have the time.
http://www.tweaktown.com/tweakipedia/89/much-vram-need-1080p-1440p-4k/index.html
"This test has shown that 8GB of VRAM is pretty useless right now, there's just no need. Sure, NVIDIA has a video card with 12GB of VRAM in the Titan X, and 6GB of VRAM on its new GTX 980 Ti, but most of the time it's not needed, even at 4K. If you start enabling AA, which we're going to be doing soon, then the VRAM consumption is going to skyrocket - which is something that will be interesting to see in our future article. For now, we've shown you that even the latest games don't push that far over 4GB of VRAM, so you'll feel safe buying yourself a new card with 4-6GB of VRAM."
Also worth noting is that AA isn't really noticeable at 4K. I've tested this with BF4 on a 50" Samsung 4K TV using none to max AA and there wasn't much of a difference, the only change was that it was too much of a load on the GPU's and caused lag/stuttering.