Buying second card, 5870 or 6870?

kiban

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Mar 10, 2010
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So, I own a hd 5870, and when I bought it, I was planning on crossfiring it on a later date. But now I'm looking at the 6xxx series and I don't know what to think. The cheapest 5870 I found is at 300€(431$), and the cheapest 6870 at 145€(208$).
I looked up a few reviews, and I'm seeing that the 6870 performs like 4 fps less than the 5870. Is this true? to what extent if so?, cos if it is, I would be better off trying to sell my 5870 and buying 2x6870, right?
 

kiban

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Mar 10, 2010
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Thanks for the replies. I do have the cash to buy the new 5870, I didn't mean getting cash through selling my current one. Nevertheless, I decided to go for 6870crossfire, since it doesn't do too badly compared to 5870. New tech and less performance hit from anti aliasing looks appealing too (and 2 new cards instead of 1 old 1 new).