3570k bottleneck 3 way sli 970's?

mrmanz · Dec 1, 2014

Trying to save money.

3570k clocked to 4ghz.
All i would need to buy is a 3 way sli capable mobo at 8x/8x/8x, New psu, 3rd card and the Monitor.

Already have 2 970's want to step into the 4k world with the xb280hk.

Will the CPU bottleneck my performance?

RobCrezz · Dec 1, 2014

Should be fine, but even if you get a 3 way SLI motherboard with a PLX chip, that CPU only has 16 PCI-E lanes.

I would stick with 2 way SLI to be honest

Ironsounds · Dec 1, 2014

Hello... this article says you cannot get 8x 8x 8x with the 1155 intel Chipsets. http://benchmarkreviews.com/15389/whats-new-intel-z97-motherboards/
http://en.wikipedia.org/wiki/LGA_1155

Ironsounds · Dec 1, 2014

Hello... an x99 2011MB has 40 lanes... 5 at 8x B ) http://en.wikipedia.org/wiki/LGA_2011

RobCrezz · Dec 1, 2014

Ironsounds :

As I said in my post, you can get some motherboards that can, using a PLX chip (kind of like a network switch for PCI-E).

http://www.asrock.com/mb/Intel/Z77%20Extreme9/?cat=Specifications

But yeah you are still limited by 16 lanes to the CPU.

Ironsounds · Dec 1, 2014

Hello... i read that chip is another $100 to the cost of the board. But to use the direct CPU PCIe ver 3.0 there are only 2x8 designed into the 1155 CPU.

King Mustard · Sep 10, 2015

I have a 3570K (@ 4.2 GHz) and a GTX 970 OC.

In 3DMark, I get 9774 in Fire Strike, 23532 in Sky Diver, 20903 in Cloud Gate and 171076 in Ice Storm.

I was wondering what kind of increase I'd get if I bought a second GTX 970 OC.

Can anyone in this topic help?

RobCrezz · Sep 11, 2015

King Mustard :

You wont get double performance, but still a large boost. Check these benchmarks comparing 1x 970 to 2x 970 SLI.

http://hexus.net/tech/reviews/graphics/82060-evga-gtx-970-ssc-sli-vs-titan-x-r9-295x2/?page=6

Also, be aware your motherboard MUST support SLI.

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