Is a 2GB video card a good buy or overkill?

I am currently configuring a pc to buy from cyberpowerpc.com and i am trying to decide on what kind of video card to get. I am looking for a high end, fast, gaming computer so i am configuring my pc to match that. So far i have:

CPU: AMD Phenom™II X6 1090T Six-Core CPU w/ HyperTransport Technology

HDD: 1TB SATA-III 6.0Gb/s 64MB Cache 7200RPM HDD (Single Hard Drive)

MEMORY: 8GB (2GBx4) DDR3/1333MHz Dual Channel Memory

MOTHERBOARD: GigaByte GA-870A-UD3 AMD 870/SB850 chipset support DDR3 Ultra Durable™3 Socket AM3 ATX Mainboard w/ 7.1 Audio, GBLAN, Support 6-core CPU, CPU Auto Unlocker, USB3.0, SATA-III, ON/OFF Charge for IPod, RAID, 2 Gen2 PCIe, 2 PCIe X1, & 3 PCI

SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO



I am trying to decide if i want a 2GB video card or one between 1GB and 1.5 GB. Would a 2GB video card like "ATI Radeon HD 5970 2GB GDDR5 16X PCIe Video Card" be overkill for a gaming computer? Should i just stick with something like the NVIDIA GeForce GTX 480 1.5GB 16X PCIe Video Card? Or would the Nvidia 1.2GB be fine?

Any help or suggestions would be awesome i am kind of at a block for what would be the best fit for my gaming computer and what would be just unnecessary.

Thanks in advance!|||You should be fine with just a plain 1GB graphics card, so an Nvidia with 1.2GB should be a little bit more than sufficient. Most games can run just fine on full settings with even half that. Most Nvidia cards have PhsX which adds a little bit to the experience that the 2 GB Radeon could not.



Although, if you want to make sure you won't have to update cards in a few years go for the 2 GB Radeon if you're willing to spend the money and sacrifice the PhysX.|||Personally i would go with getting two 1Gb graphics cards and using crossfire to link them together so they work with each other. Although that would only save you money if that doesn't matter then having 2Gb of deadicated graphics would allow you to run on multible screens and at higher resolutions. Hope this helps|||I would say stick with a 1.5GB GTX 580. Its a 480 done right, so look into getting it if your gonna get an Nvidia. The 5970 is a good GPU, but if you can, get the Asus Ares. Its a much faster redesign of the 5970.|||There's no such thing as an overkill!



Gaming graphics continuously advance