» Fri Jun 01, 2012 7:59 am
I bought a gtx680 the day it was released. I am very happy. If you can afford the 500 euros/dollars, it is a very good deal, imho. Especially for Skyrim.
To run Skyrim with a lot of texturepacks and other graphical mods, your videocard needs to have a lot of video-ram (vram). Most mid-price videocards have 1GB of vram. Budget cards have even less. 1GB is enough to run vanilla Skyrim, with a few mods. But probably not enough for the official texture-pack or fan-made large texture packs. So you want more than 1GB.
AMD cards tend to have a bit more vram, compared to equally priced nVidia cards. Unfortunately the AMD cards run a little slower on average (10-25%) in some games, compared to nVidia cards in the same price range. For some games, but Skyrim is one of those games.
The gtx680 is very fast. The fastest card there is (single GPU, non-CF/SLI, before someone starts to nag).
And it has 2GB of vram. Enough to run Skyrim with any mod or texture-pack you want.
Now how fast is the gtx680 ?
That depends on other factors. Indeed, how fast is your CPU ? How much eyecandy do you enable ? Do you care about never dropping under 60 dps ?
I'll give you my own example.
I had a gtx260 videocard. That card has about 1/3rd the power of a gtx680. And a E8500 cpu (2 cores, 3.1GHz). It was 3-4 years old. It ran vanilla Skyrim fine. 1920x1200, 4xMSAA, 16xAF, high settings, some small texture packs (water, Vurt's). Average fps was 30-40. Fps at the stairs in Whiterun was 24 fps. Indoors often hitting 60 fps.
Then I upgraded my videocard to a gtx680. My fps increased by 50% or more. So I got 35ish or so fps at the stairs in Whiterun. Fps in Markath and Riften went up as well. But I expected my rig to be "cpu limited". So I started to enable more eyecandy features. Features that make the videocard work harder, but that didn't depend on the CPU. I now use 8xMSAA, plus 4xSSAA Transparency, very high SSAO (Ambient Occlusion, I love that now), Ultra settings, official high-res texture pack, and a few more graphical mods. My fps dropped in Whiterun dropped from 35 to 32. But the graphics quality (the eyecandy) increased really a lot. My game looks beautiful now.
I checked the load on CPU and GPU (with a tool called nvidia inspector). I saw both my CPU and GPU running at close to 100%. That means that my old E8500 is able to drive the gtx680 to work at it hardest. Next week I will buy a new CPU (an i5-3570K), and I expect my framerates to go up a bit, of course. But the bulk of the work is being done by the gtx680.