[SOLVED] CPU with RTX 2070

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account12312312

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Nov 29, 2018
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I recently bought a new RTX 2070 as an upgrade to my old GTX 960. I was aware that I was going to be bottlenecked by my CPU and this has been made apparent when all of the recommended graphic options in GeForce experience result in my games having around 20-30 fps.

My current CPU is the Intel i5-6400 and I intend to stick with Intel. My motherboard currently supports 6th and 7th generation Intel but I am willing to change my motherboard if needed.
 
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For cost related reasons, I'm myself thinking more about AMD but.. (R7-1700 set costs 200 less and offers same performance with slighly lower single core performance, that is local prices though)

your upgrade from i5-6400 to i7-7700k should give you significant boost on both single core (30 to 50% depending on clock speed) and a significant bump on muticore stuff too.
The price tag I got on local prices (you should really check them, pcpartpicker.com is good) was pretty much 800 for MB+CPU+32GB of ddr4 (yes, I have 16GB now and I see it as slightly lacking so any new build would have more)

Edit:
Economic reasons also point to just upgrading CPU, 6700 is pretty much on line with what I have, 4770k and while I get slight bottlenecking...
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little_me

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May 9, 2015
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Considering that more recent I5's gain odd 5 to 10% at most in performance, the gains there are small.

I7's have hyper threading, yes, but games also don't see if threads are per core or or not, so 4C/8T is seen as 8.
Also while game might use only 4, CPU still has to feed stuff to GPU, which said 4 extra threads can do.

Your options:
Overclock, higher clock speed always gives gains (dependant on if CPU/MB support it, you didn't mention your I5 being K variant so.. no?)
More cores, that helps
Both?

Edited to add:
As example:
I have I7-4770k (not overclocked, I'm lazy)
I had R9 290X which is about somewhere in 960-970 performance area.
I got RTX 2070, with the assumption that it'd be around 90 to 110% faster. (depending on benchmark)

I've seen results of 80 to 90% in 1080P and close to 100% in 1440P and 4k

Long story short, yes, it might bottleneck for me on 1080P too but.. performance gain was still significant..

Big questions are:
What are your gains on 960 -> 2070 and if you want more, what is your budget? replacing CPU is cheapest option, followed by MB/CPU for... how much more FPS?
 
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account12312312

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Nov 29, 2018
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My CPU is not the K variant so no it is not overclockable, my current motherboard also only supports DDR3 memory and most of the newer CPUs only support DDR4. I will be upgrading my motherboard for Christmas allowing me to use DDR4 memory instead. My gains from my 960 to my 2070 allow me to get an average of 60 fps on ultra fps when before I was on medium. This doesn't seem like much of a difference however considering the amount I payed for the card.

To fix this, I am considering saving up for the i7-7700k, what is your opinion on this?
 
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little_me

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May 9, 2015
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For cost related reasons, I'm myself thinking more about AMD but.. (R7-1700 set costs 200 less and offers same performance with slighly lower single core performance, that is local prices though)

your upgrade from i5-6400 to i7-7700k should give you significant boost on both single core (30 to 50% depending on clock speed) and a significant bump on muticore stuff too.
The price tag I got on local prices (you should really check them, pcpartpicker.com is good) was pretty much 800 for MB+CPU+32GB of ddr4 (yes, I have 16GB now and I see it as slightly lacking so any new build would have more)

Edit:
Economic reasons also point to just upgrading CPU, 6700 is pretty much on line with what I have, 4770k and while I get slight bottlenecking, I can get all maxed details at 60+ fps at 1080P and 1440P (I don't have over 60Hz screen so.. don't really care for for past that)

The difference between 6700 and 7700K is pretty much around 20% at most is that worth around 500 to 600 is your choice.
 
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tedmerrick05

Dec 6, 2018
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I am also looking to upgrade my i5 to a i7-7k with a 2070. These looks like the best current affordable upgrades and I'm am too bound to an old mobo so stuck with the best of the last gen CPUs. Would the difference between a k and non k cpu make a significant difference for gaming considering I don't plan to over clock?
 
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little_me

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May 9, 2015
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If you don't overclock, K vs non-K difference is small. in case of 7700 vs 7700k 3.6Ghz vs 4.2Ghz, so yes, it matters but... is it worth 30% higher price?

Bigger question is your resolution and refresh rate, at 1080P at over 60Hz, yes, all extra CPU oomph will benefit you.
at 1440P@60Hz less so, if at all. Many claim that 1440p@144Hz works fine with older I7's like 3770k (which is pretty much equal to 7700 in performance at stock clocks)
at super wides like 3440x1440.. or 4k not really anymore, 2070 cannot really hit 60fps and performance is more limited by GPU (2070) than CPU.

so.. if goal is 1080P@144Hz or so, yes, it helps. If you are happy with less, no, no real benefit between K and non-K processors.
at higher resolutions, benefit vanishes completely.

Edit:
You could google for performance benchmarks on your aimed for I7's with 2070 to see what benefits others have got, benefits can vary a LOT between different resolutions, refresh rates and games.
 
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