Quick question about the ASRock Z77 Extreme 4

Lazdaa

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Apr 21, 2012
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Hey guys!

Just a quick question about the ASRock Z77 Extreme 4 - Will this card work just fine with a pair of R7850?
 
Yes it will @ x8/x8 mode, which is fine.

- 2 x PCI Express 3.0 x16 slots (PCIE2/PCIE3: single at x16 (PCIE2) / x8 (PCIE3) or dual at x8/x8 mode)
- 2 x PCI Express 2.0 x1 slots
- 2 x PCI slots
- Supports AMD Quad CrossFireX™ and CrossFireX™
- Supports NVIDIA® Quad SLI™ and SLI™
 

Lazdaa

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Apr 21, 2012
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Eh okay, is it better to get a more future proof board? With 2 x16 ? If so can you link one.

Also is there a big difference between x8 and x16?

The CPU I'm getting is a 3570k
 
The difference between x8/x8 and x16/x16 is small.


The difference between x8/x8 and x16/x16 is negligible outside of benchmarks and some scientific computing apps that need to do massive amounts of communication between two cards or the card and the CPU.
 
Check the scaling on these old images.

chart20.png


chart21.png


chart24.png
 

Lazdaa

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Apr 21, 2012
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Oh Well I'm already getting the evo fan so thats great :)

Maybe I'm gonna look a bit further into a double x16 and the prices where I live :)
 

Lazdaa

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Apr 21, 2012
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Okay, so now you say i should go with the cheaper :p

What do you think about the MSI GD-45 VS Asrock Ex4 ? - http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100007627%20600093976%20600315497%20600311010%204017%20600009016&IsNodeId=1&bop=And&ShowDeactivatedMark=False&CompareItemList=280|13-157-293^13-157-293-TS%2C13-130-645^13-130-645-TS
Here, the MSI is 20$ Cheaper.


i Plan on using:
1 SSD
1 HDD
3570K - With Fan
7850 - Possible cf in the future
Antec HCG 620WM - Although im considering the http://www.newegg.com/Product/Product.aspx?Item=N82E16817341052 for the extra W
Corsair Vengeance 2x4gb
In my Antec P182 Case. Also i don't know if there is a difference between how many fans you can connect, but i currently got 3 and space for one more.

Thanks for all the help btw :D