Tweaking FSB on X470/2700X?

Discussion in 'Overclocking & Cooling' started by jfreund, Jul 26, 2018.

  1. jfreund

    jfreund Gawd

    Messages:
    860
    Joined:
    Sep 3, 2006
    I've set my FSB to 103.3 to get the 2700X to boost up to 4490 MHz and get my 3200 CAS 14 DDR4 to 3300 MHz. The RAM got a bump to 1.4V, but the CPU voltage is left on Auto. The board is an X470 Aorus Ultra Gaming and the RAM is Team Dark Pro (B die). Cooling is a custom loop with the GPU and CPU, 2x360 mm radiators. Highest temp spike has been 74C.

    Anybody else getting higher clocks using FSB?
     
  2. Nightfire

    Nightfire Gawd

    Messages:
    781
    Joined:
    Sep 7, 2017
    Holy Smokes! Have you done a Conebench run? If everything is running correctly at that speed, you should be VERY close to 2000 points.
     
  3. jfreund

    jfreund Gawd

    Messages:
    860
    Joined:
    Sep 3, 2006
    I'll give it a run. I set back to stock speed because Kingdom Come: Deliverance was crashing to desktop, but now I'm pretty sure that was the GOG Galaxy client acting up, not any hardware issues.
     
  4. FlawleZ

    FlawleZ Gawd

    Messages:
    537
    Joined:
    Oct 20, 2010
    Interesting. But is it all core boost and how long will it sustain @ 4490Mhz?
     
  5. jfreund

    jfreund Gawd

    Messages:
    860
    Joined:
    Sep 3, 2006
    This is using Precision Boost and increasing FSB so that each step in PB is higher. During Cinebench runs, the cores would run between 4180 and 4220 MHz. Increasing Precision Boost Overdrive from the default 2X to 4X helped, but nothing higher than 4X seemed to make a difference.

    Multithread: 1898

    Single thread: 185
     

    Attached Files:

    Nobu and Pieter3dnow like this.
  6. Nightfire

    Nightfire Gawd

    Messages:
    781
    Joined:
    Sep 7, 2017
    1898 points is exactly within the range of what you should get at 4.2 ghz. This is why I ask people to run CB when they have abnormally high clockspeed claims.

    Still, 1900 points is a VERY respectable score. One only achievable on Zen+.