Cpu Question - Topic

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Jun 26 2017 04:29pm

So I'm planning on building a new rig here and I've been following all the hype of intel i7 7820x / intel i9 7900x vs AMD thread-ripper

I know there's no reason for me to go i9 and I've generally been an intel fanboy, so my question is , is there a big boost in performance of the 7700k vs 7820x? Main uses of the computer will be gaming/streaming/ uploading video and music content.

Also will a 7700k bottleneck out at 16 pci lanes running SLI 1080 TI?

This is planned to be a very high end machine but if the CPU makes no difference than I think I'll save my 300$

Penguins0690

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Jun 26 2017 04:42pm

Delidded 7700k

DCSS

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Jun 26 2017 04:43pm

In multitasking yes the performance increase is large, and yes only having 16 lanes is problematic for 2x 1080 ti in many cases.

This post was edited by DCSS on Jun 26 2017 04:44pm

yupitsmeh

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Jun 26 2017 04:44pm

Quote (DCSS @ Jun 26 2017 05:43pm)

In multitasking yes, and yes only having 16 lanes is problematic for 2x 1080 ti.

no thats been debunked on running 8x/8x

DCSS

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Jun 26 2017 04:45pm

Quote (yupitsmeh @ Jun 26 2017 06:44pm)

no thats been debunked on running 8x/8x

Source? And don't you dare mention 3dmark

This post was edited by DCSS on Jun 26 2017 04:47pm

yupitsmeh

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Jun 26 2017 04:49pm

Quote (DCSS @ Jun 26 2017 05:45pm)

Probably with 3dmark or some other such program that doesn't seem to care about lanes.

cards arent saturating the lanes yet

https://www.pugetsystems.com/labs/articles/Titan-X-Performance-PCI-E-3-0-x8-vs-x16-851/

http://www.gamersnexus.net/guides/2963-intel-12k-marketing-blunder-pcie-lane-scaling-benchmarks

DCSS

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Jun 26 2017 04:50pm

Quote (yupitsmeh @ Jun 26 2017 06:49pm)

Seems our facts aren't compatible then.

Of course you linked pages with 3dmark/unigine heaven results
Everyones favorite video games.

This post was edited by DCSS on Jun 26 2017 04:52pm

yupitsmeh

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Jun 26 2017 04:52pm

Quote (DCSS @ Jun 26 2017 05:50pm)

Seems our facts aren't compatible then.

fyi my highest scores on my old 970sli came from 8x 8x
think I saved pics somewhere becuz I dropped into top100

DCSS

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Jun 26 2017 04:52pm

Quote (yupitsmeh @ Jun 26 2017 06:52pm)

fyi my highest scores on my old 970sli came from 8x 8x
think I saved pics somewhere becuz I dropped into top100

Like i said, synthetics dont matter here. see the above video...

This post was edited by DCSS on Jun 26 2017 04:53pm

Rapture

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#10

Jun 26 2017 04:53pm

The 7820x is a worse chip for gaming, as its single thread performance is lower.
However it has much more cores, so any task involving more cores will see a large performance uplift.

I believe that you would be fine with 16 pcie lanes, as many tests have shown only minor performance uplifts when having more lanes.
In the end, if you were going for high end, i'd get the 7820x. It's a better chip overall for your uses.

If you were concerned actually concerned about cost/these factors, you could probably solve your problems by becoming an AMD fanboy, as they currently have the best offering for an 8 core/16 thread, with more PCIE lanes and similar performance at a much lower power cost/monetary cost.

edit: looks like someone sourced my comment. Yes youll get slightly less performance, but you must ask yourself if you want to pay for the cost difference by using intel for that small uplift.

This post was edited by Rapture on Jun 26 2017 04:55pm

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