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SLIvsXFR - Few questions (570:7870)

Last response: in Graphics & Displays
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May 10, 2012 12:06:10 AM

Heya everyone!!

So, summer term starts and I want to build something new.

Here are my questions..

1.) 570sli vs 7870xfr : Done a ton of research and still can't figure out which is stronger?

2.) http://www.newegg.com/Product/Product.aspx?Item=N82E168... - is this dual 16x or 16x8x.. I cannot tell.

Thanks so much!
a c 253 U Graphics card
May 10, 2012 12:17:47 AM

http://www.tomshardware.com/reviews/gaming-graphics-car...

In this chart you can see that the 7870 is one level higher than the 570 so it stands to reason the two 7870's will be better also.
The motherboard has two x16 slots with 16 lanes and one x4 slot with 4 lanes and all three are full length , it's just that the third slot has only 4 lanes of bandwith left so that's why it's a x4 slot.
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a b U Graphics card
May 10, 2012 12:19:58 AM

1) 7870 CFX is a bit stronger than 570 SLI. The 7870 outperforms the 570 by a tad and CFX scales better than SLI.
2) That board can do x16 x16.
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May 10, 2012 12:32:21 AM

inzone said:
http://www.tomshardware.com/reviews/gaming-graphics-car...

In this chart you can see that the 7870 is one level higher than the 570 so it stands to reason the two 7870's will be better also.
The motherboard has two x16 slots with 16 lanes and one x4 slot with 4 lanes and all three are full length , it's just that the third slot has only 4 lanes of bandwith left so that's why it's a x4 slot.


This was a bit confusing to me, I guess.

So, there are two x16 slots and each have 16 lanes? Meaning, each can run at x16 for dualx16 yes?
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a b U Graphics card
May 10, 2012 12:34:12 AM

Yes, they can both be run with all 16 lanes.
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Best solution

a c 253 U Graphics card
May 10, 2012 12:39:24 AM

Yes when you look at the details page of the card it shows x16 , x16 , x4 so the two slots that are x16 have the full 16 lanes each. Even if the slots said x8 x8 the slots would be giving the same performance because the video cards cannot saturate the slots anyway.
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May 10, 2012 12:40:05 AM

Best answer selected by konzine.
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May 10, 2012 12:40:44 AM

Thank you both for your excellent answers, I appreciate. Now to decide if I want the 2x7870 set up... or the 680 single. That's another day, though :) 

Thanks again.
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a c 253 U Graphics card
May 10, 2012 12:44:58 AM

680 setup ? Where did that come from I thought you were talking about the GTX 570? If your considering the 680 vs two 7870's I would have to take the 680 , because you have the option of adding another later and for now the 680 will give you enough performance for any game.
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May 10, 2012 12:47:41 AM

Yeah that is what I have been reading for the last 15 minutes or so.. Which is really deterring me away from 2 mid range cards. Might do that, but we shall see. Too bad newegg is plum sold out.
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a c 253 U Graphics card
May 10, 2012 1:05:42 AM

There is supposed to be some more supply by the end of the month and it may be worth waiting for.
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