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AMD Zen 2 (Refresh) 3900XT/3800XT/3600XT

Discussion in 'CPUs' started by The Old School Gamer, May 23, 2020.

  1. Grim5

    Suspended

    Joined: Feb 6, 2019

    Posts: 3,588

    Holy crap lol, a 3900xt would be really tempting but nah ima still wait for zen3
     
  2. humbug

    Caporegime

    Joined: Mar 17, 2012

    Posts: 34,008

    4.6 all core?
     
  3. TNA

    Capodecina

    Joined: Mar 13, 2008

    Posts: 14,939

    Location: London

    I hope so. With improved IPC it will be awesome. Can see myself picking it up a 4900X in 18-24 months time as they get major price reduction :)
     
  4. Participant

    Caporegime

    Joined: May 13, 2003

    Posts: 31,161

    Location: Warwickshire

    Wonder if they'll bump the 4600 to be an 8 core part.
     
  5. Rossuk89

    Wise Guy

    Joined: Jan 11, 2011

    Posts: 1,964

    Would love this. Going from 4/4 to 8/16 would be worth it, just can't justify a 6/12 upgrade. Ideally a 12/24 but that's probably overkill and will cost £450+
     
  6. The Old School Gamer

    Hitman

    Joined: Feb 22, 2019

    Posts: 568

    Location: The Twilight Zone

    Waiting for comprehensive benchmarks.

    Frequency scalling alone would not appear to offer much uplift as that's not really the bottleneck.
    We need to see how far the infinity fabric will go in sync on these XTs.
     
  7. Participant

    Caporegime

    Joined: May 13, 2003

    Posts: 31,161

    Location: Warwickshire

    ...which to most isn't worth it unless you have significant productivity demands.

    An 8-core 4600 for ~£200 would clean up, however I suspect they'll maintain the core counts per model, at least for Zen 3. No commercial reason to give another 2 cores away at the moment.
     
  8. LePhuronn

    Mobster

    Joined: Sep 26, 2010

    Posts: 4,982

    Location: Stoke-on-Trent

    Indeed. Reworking the CCX design into a single 8 core unit will net bigger gains than increasing core counts. 5nm shrink and a rumoured total rework of the chiplet design opens up possibilities for core count increases in Zen 4, but even then I can see that only happening at the lower and mid SKUs: 8 cores across the board with 12 and 16 if you want them. I could see a 5950X with 20 cores just to rub Intel's face in it a little more though, but unless Rocket Lake's successor moves past 10 cores (hell, rumours suggest Rocket Lake isn't even getting 10 cores) there's no commercial reason for AMD to move past 16.

    I can see Threadripper holding station for the same reason.
     
  9. Minstadave

    Caporegime

    Joined: Jan 8, 2004

    Posts: 26,394

    Location: Rutland

    4.6 all core boost would be a significant boost, I'd be surprised if this was the case. Current 3900X only do about 4-4.1 stock.
     
  10. alec

    Hitman

    Joined: Dec 11, 2016

    Posts: 626

    4.6 all core overclock is not unusual for people who bought Zen 2 cpus recently (from quick look at overclock.net forums)
    tech process matures
    And it will still be subject to power limits, so will not be held for long.
     
    Last edited: Jun 2, 2020
  11. Sargatanas2511

    Mobster

    Joined: Oct 26, 2013

    Posts: 3,469

    Location: Scotland

    Most 3900X's that I have seen, mine included can do 4.3 fairly easily. I agree though 4.6 would be a big multithreading jump.
     
  12. Ayahuasca

    Capodecina

    Joined: Apr 23, 2014

    Posts: 20,837

    Location: County Durham

    3800XT is looking tempting if it can do 4.6ghz all core.
     
  13. Ross Thomson

    Wise Guy

    Joined: Nov 7, 2017

    Posts: 1,122

    mine is pish. 4.3 at the highest safe voltage. will do more with unsafe 24/7 voltage. I just leave it on PBO.
     
  14. Sargatanas2511

    Mobster

    Joined: Oct 26, 2013

    Posts: 3,469

    Location: Scotland

    I ended up doing that too. I am mostly a gamer and on PBO 4 cores will hit 4.6-4.65Ghz so I just left it on that. It's better for me than 4.3 all core.
     
  15. Ross Thomson

    Wise Guy

    Joined: Nov 7, 2017

    Posts: 1,122

    I'm on an x470 board with an older bios. mine doesn't get that high. will be getting the x570 tomahawk when its released.
     
  16. ceaton88

    Hitman

    Joined: Jan 14, 2013

    Posts: 809

    Location: Durban

    I bought a 3900x literally 2 days ago lol, hope I don't regret it with these chips being monsters :V
     
  17. Minstadave

    Caporegime

    Joined: Jan 8, 2004

    Posts: 26,394

    Location: Rutland

    4.6 all core on the 3900X would be very unusual.
     
  18. Sargatanas2511

    Mobster

    Joined: Oct 26, 2013

    Posts: 3,469

    Location: Scotland

    Funny enough, I am on an X370 Crosshair VI Hero. Maybe I just got lucky!
     
  19. alec

    Hitman

    Joined: Dec 11, 2016

    Posts: 626

    how many 3900X bought after March 2020 and tested for overclock are there?
    3600 is more common
    Perhaps good 3900X bins are held from market to be sold as 3900XT, but 3600 are needed in higher numbers so some good silicon is now on the market
     
  20. SupraWez

    Wise Guy

    Joined: Nov 17, 2007

    Posts: 2,264

    One of these would be a nice upgrade to my 1700 that is running in a Asus CH6, hopefully there will be a BIOS update.