How much better single-threaded performance do current CPUs have?

Discussion in 'Intel Processors' started by wyqtor, Mar 14, 2019.

  1. wyqtor

    wyqtor Limp Gawd

    Messages:
    378
    Joined:
    Dec 30, 2011
    My main reason for upgrading my CPU (i7-4770K @ 4.4 GHz) would be to get better single-threaded performance in indie simulation games that usually run on mostly one thread (Cities Skylines, Oxygen Not Included, Factorio, Kerbal Space Program, Prison Architect, Rimworld, etc. - stuff like that) and can suffer from low FPS in the late game?

    How much better is the performance of current CPUs (like the i9-9900K or i5-9600K) in this use case? Is an upgrade worth it at this point, or should I rather save my money for Ice Lake or the equivalent from AMD?
     
  2. fullvietFX

    fullvietFX [H]ard|Gawd

    Messages:
    1,767
    Joined:
    Sep 1, 2004
    AMD single thread performance hasn’t matched Intel yet. However that might change when Ryzen comes out with 5GHz this July. If I were you I’d hold out until next gen. Your CPU is still very formidable.
     
  3. vick1000

    vick1000 [H]ard|Gawd

    Messages:
    1,912
    Joined:
    Sep 15, 2007
    IPC has been +5-10% per generation, app dependent. But combined with higher base/ boost clocks and more cores, there's a lot to be gained depending on usage of course.
     
  4. sirmonkey1985

    sirmonkey1985 [H]ard|DCer of the Month - July 2010

    Messages:
    21,068
    Joined:
    Sep 13, 2008
    to answer your question, you'll definitely see a performance increase in single threaded applications going from a 4770k to a 9600/9700/9900k just due to the higher boost clocks and IPC improvements over the 4770k. if you don't need all the extra threads there's obviously money you can save there by going with the non HT processors. but like others have said we're only a few months away from Ryzen zen 2 processors that if you can hold out til those announce/launch it may be worth it either in performance or because intel drops the prices on their current gen stuff.
     
  5. defaultluser

    defaultluser I B Smart

    Messages:
    12,147
    Joined:
    Jan 14, 2006
    Skylake is 5-10% faster per-clock than Haswell, 20% if your game is bandwidth-limited on DDR3.

    The 9600k will, hit 4.6 at stock, and most can be overclocked to 4.9-5.0, so that bumps you up to 30% best-case, or 20% worst-case.

    You're going top have to wait until intel 10nm, if faster single-thread performance is what you desire. Sunny Cove should be available by the end of this year, or early 2020.

    People are mostly expecting Zen 2.0 to match Skylake IPC, but not exceed it, while likely not hitting the same high clocks as Intel. Maybe jump 200 mhz over the 2700x.
     
    Last edited: Mar 23, 2019
  6. MyNameIsAlex

    MyNameIsAlex Limp Gawd

    Messages:
    209
    Joined:
    Mar 10, 2019
    I have heard this for 10+ years, it is always that next generation where AMD will match Intel on C2C performance
     
  7. pbassjunk

    pbassjunk Limp Gawd

    Messages:
    428
    Joined:
    Sep 17, 2012
    I went from a 4790k to an 8700k. No overclocking on either. Hasn’t been terribly noticeable.
     
    /dev/null likes this.
  8. /dev/null

    /dev/null [H]ardForum Junkie

    Messages:
    13,823
    Joined:
    Mar 31, 2001
    I don't really notice my 4770k (stock) to i5-8400...I'd wait until at least Zen2 if I were you.
     
  9. PhaseNoise

    PhaseNoise [H]ard|Gawd

    Messages:
    1,302
    Joined:
    May 11, 2005
    My two recent upgrades were 3700->8700k, and i7 860 -> Ryzen2700x.
    They are both noticeable upgrades for all tasks. The IPC hasn't changed overwhelmingly, but it did go up and the clock rate is MUCH higher, so it does really help.

    That said, unless something really sucks for you now, I'd echo the advice to see what Zen2 does.
     
    Esso and IdiotInCharge like this.
  10. rhansen5_99

    rhansen5_99 [H]ard|Gawd

    Messages:
    1,976
    Joined:
    Nov 12, 2001
    I will echo what is said I went from a Xeon 1231v3 (basically a 4790 so <4GHz) to a r7 1700 in my workstation. Basically equal or even a tad bit slower single thread but i did go from 4c8t to 8c16t so other stuff that is multi threaded is much better. Also remember to jump platform from 1150 to anything newer, requires a DDR4 investment, but prices are falling as of recently.
     
  11. acquacow

    acquacow Limp Gawd

    Messages:
    368
    Joined:
    Mar 7, 2016
  12. Dan_D

    Dan_D [H]ardOCP Motherboard Editor

    Messages:
    53,114
    Joined:
    Feb 9, 2002
    I'm going to bet that Zen 2 still won't match Intel's latest CPU's on a clock for clock basis. They probably won't clock significantly better than they do now. I'm expecting most of Zen 2's increases in performance to be due to a clock speed improvement, but I'm thinking it will only be a couple of hundred megahertz at best. We'll see though. AMD's CPU's almost never live up to any of the rumors or pre-release hype.
     
    DooKey likes this.
  13. God whale

    God whale n00b

    Messages:
    39
    Joined:
    Mar 18, 2019
    lol, amd always matches the speed of intel chips 2 years before it. Only with built in overclocking and heat issues do they get close to the performance.
     
  14. drescherjm

    drescherjm [H]ardForum Junkie

    Messages:
    14,199
    Joined:
    Nov 19, 2008
    That was true in the early to mid 2000s but it has been quite a long time since then. With that said the per core performance getting much closer since Zen was released. Zen 2 may do it only to have Sunny Cove retake the per core performance lead in 6 months. It very much depends on the frequency TSMC can clock its 7nm parts. I don't think the hw Spectre will hurt AMD. Might even help a little if they can convince OSs to not apply software mitigations for Zen2.
     
    Last edited: Apr 19, 2019 at 4:19 PM