Pemalite on 04 July 2013
What resolution do you game at?
DDR3 video cards take a fairly beefy hit at 1080P and higher, not so bad at 720P.
I would probably think it's a wash performance wise.
Personally, I would sell the GTX 550's and the 4800 cards and pick up a single GPU that would wipe the floor with them all.
Here is how the GTX 550's (GDDR5) stack up to Radeon 4870's.
http://www.anandtech.com/bench/Product/513?vs=541
The DDR3 version would be slower.
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