Should I buy a cheap gpu with 4gb vram?

[dreadflopp]

A question. Should i buy a new graphics card? I have a decent rig i think. 8 gb ram. Sandy bridge 2500k overclocked to 4,4 ghz. SSD. The problem with my rig is vram. I have an nvidia 570 gt 1280 mb card which cost about 250-300 euro. This card is good i think but lacks in vram to play skyrim with high res mods. With other games its fine. I have seen new cards, gt 630 for example, for about 70 euro. These cards have 4 gb vram and should be great (?) for skyrim but my current card outperforms gt 630 in bechmarks (https://community.futuremark.com/hardware/gpu/NVIDIA+GeForce+GT+630/review#). What would you have done? Buy a new one? Can you run a rig with 2 cards and swith to the one with more vram when youre going to play skyrim? Whats the downside of the cheaper card? 

[LeetMiniWheat]

Personally I wouldn't SLi unless you intend on running lots of transparency antialiasing, ambient occlusion, and ENB/lighting mods. but even then, there are some issues in skyrim like tormentor said. also, GPU's before kepler (GTX 6xx) had micro-stutter problems which sometimes made framerates feel like they were lower than single cards due to delays in syncing frames between the graphics cards.

 

P.S. I wish i had two 4GB cards >.<

[Selway]

Thank you for the info Leet. I've been doing some research on some 4GB cards. I'm looking forward to tooling around Skyrim in style. I'm hoping to have it up and running for the next STEP.