Will the 7820x be ok for 4k @ 144hz?

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xxxlun4icexxx

xxxlun4icexxx

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Jun 13, 2013
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Hi all,

I have been struggling on pulling the plug on a new system for a few weeks now. In another thread I posted, I am looking for a white mobo to go with my white themed build and view 71 snow case. One of the responses said instead of going for an 8700k, go with a 7800x and then I can purchase the MSI x299 Arctic motherboard which is exactly what I want.

Anyway, I was about to buy everything and then I read a few articles stating that the X299 platform cpus just are not good choices; Extremely hot, unstable, and fall behind the 8700k drastically in gaming performance (I'm only using it for gaming).

So, my exact intention as far as what I want to do with it is, I am purchasing the new acer 4k 144hz monitor once it releases (the err....xb273k). I will be playing new titles like bf v, metro exodus, etc.

I plan on getting some RTXs to throw in the build, but I just want to make sure that a 7820x won't bottleneck my system and not be able to support the high framerates I am looking to get. I understand that in terms of "bang for your buck", the 8700k is much better considering its cheaper, but like I said, I am willing to ignore that in favor of aesthetics.

Do you think I will be ok with one?
 
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vapour

vapour

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What is major usage? Gaming? If so, whoever tells you X299 is just joking.
Even if your cpu can do 144, 2080ti may not be able to do 144hz @ 4k. To me, GPU is the bottleneck for 4k gaming, any modern cpu should be fine like Ryzen 2 and 8th gen/9th gen even 7th gen Intel.
 
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mdd1963

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The 8700K would be faster at all games....and less expensive. If the build will not occur for a month or so anyway, I'd certainly want to evaluate 9700K thru 9900K price and performance as well...

Many folks mistakenly think X299 is magically going to be faster at gaming primarily by virtue of being able to run a pair of GPUs at 16+16 PCI-e lane configuration....; it still is not faster. (but, then many bought Threadrippers for gaming specifically, swearing one year after delivery, that everything in gaming would be better on 12-16 cores....)
 
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DeauteratedDog

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Hot? Yes, the 7820x has a much higher TDP.
Unstable? Never heard that before.

The overall performance is quite similar, but the 8700k is going to be cheaper overall and run cooler.

I would only look at the 7820x if my application depended on memory bandwidth. The 7820x stomps the 8700k there, but most applications are not heavily dependent on memory bandwidth.
 
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xxxlun4icexxx

xxxlun4icexxx

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Yes the major usage is gaming. I understand that the platform wasn't created with gaming in mind. But as I said, I just wanted to use the platform to get the motherboard I wanted, and make sure that the cpu was good enough to not bottleneck me for said gaming I'd like to do.
 
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xxxlun4icexxx

xxxlun4icexxx

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Understood. So you do think that it will bottleneck me a bit? I was hoping the gpu would really be my only bottleneck. Then I wouldn't feel bad about going with x299. darn.
 
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vapour

vapour

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My take for your all white rig...

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 7 2700X 3.7GHz 8-Core Processor ($318.99 @ SuperBiiz)
CPU Cooler: Deepcool - CAPTAIN 240EX RGB WH 153.0 CFM Liquid CPU Cooler ($104.49 @ Newegg)
Motherboard: MSI - B450M MORTAR TITANIUM Micro ATX AM4 Motherboard ($99.98 @ Newegg Business)
Memory: Corsair - Vengeance LPX 16GB (2 x 8GB) DDR4-3200 Memory ($169.89 @ OutletPC)
Storage: Team - T-FORCE DELTA RGB 250GB 2.5" Solid State Drive ($74.99 @ Newegg)
Video Card: EVGA - GeForce GTX 1080 Ti 11GB FTW3 ELITE GAMING Video Card ($995.95 @ Amazon)
Case: Phanteks - Enthoo Pro ATX Full Tower Case ($105.98 @ Newegg)
Power Supply: SeaSonic - PRIME SNOWSILENT 550W 80+ Gold Certified Fully-Modular ATX Power Supply ($89.99 @ Newegg)
Total: $1960.26
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-09-17 15:24 EDT-0400

2700X vs 8700k:
https://www.techspot.com/review/1655-core-i7-8700k-vs-ryzen-7-2700x/

Just something you can consider, definitely 8700k is better if only gaming, 2700X will be better if you stream as well.
 
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DeauteratedDog

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I would expect that the gaming performance would be almost identical.

The 8700k has better single thread performance, which is traditionally linked to gaming performance, but more games are exploiting more threads as time goes by and the 7820x has better multi-thread performance.

If you want to use that motherboard, don't let processor performance scare you off - there just isn't much performance difference overall. The 7820x build will be more expensive though.
 
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xxxlun4icexxx

xxxlun4icexxx

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Alright, that's pretty much exactly what I wanted to hear. If that is the case, then I will give into my desire and go with that build haha.
 
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xxxlun4icexxx

xxxlun4icexxx

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Vapour,

Thank you for the advice.

It's more expensive, but would this motherboard suit my needs with that cpu?

MSI Titanium

Looking to run SLI 2080s or 2080tis eventually.
 
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mdd1963

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Intentionally choosing a more expensive X299 MB (what is it's 'magic feature spec set', anyway?) to use a more expensive CPU (current Amazon costs show it equaling 8086K costs?) to get 5-10% less frames/sec at chosen resolution seems...odd.

And given the 30-35% lead 8700K has over R7-2700X in BF5 minimum framerates, I'd stick with the 8700K recommendation...; if you could afford to blow money on X299 and 7820X, you might as well choose 8700K.

https://www.youtube.com/watch?v=cAsyo8gIyys&t=354s

 
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xxxlun4icexxx

xxxlun4icexxx

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So I ended up getting a 7800x. Installed it and am currently running benchmarks.

So far I have it stable at 4.6ghz @ 1.22v with the cache at 3ghz @ 1.075v. Temps are pretty manageable. 60s during stress tests. 35ish idle. I think the CPU could easily hit 5ghz with some more advanced users but doing that while also balancing the mesh oc would be a ton of trial and error.

As long as this plays my games @ 144hz, I'm happy.

Pic of build below:
20180924_205905_zpsye0z9hwh.jpg
 
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mdd1963

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No, it just seems odd to choose a mainboard and CPU costing $200-$300 more solely because a white motherboard is available, and getting slightly less performance.... (Although at 4k the difference would be unnoticeable...)

9900K will be out in a month....;I'd save the MB and CPU ordering for last, perhaps you will change your mind if only by accident once reviewing the refreshed 14nm ++++++++++ CPUs...

Update: see you already bought, enjoy! :)

 
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xxxlun4icexxx

xxxlun4icexxx

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Thanks, and yeah I understand it's an odd choice. Idk, impulse buy, seems ok for my purposes now. Perhaps I'll switch to the newer base once it comes out.
 
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