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Xeons with an open multiplier

Discussion in 'Processors and Motherboards' started by BlackArchon, Aug 5, 2017.

  1. Patriot

    Patriot Moderator

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    QFSS , but that is the retail r2 stepping.
     
    #21
  2. nfsden

    nfsden Member

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    I've found cpu-z validated results with e5 2660v1 clocked to 3.0 by setting multiplier to 30x on all cores from stock 27x
    Is there exists a way how to set multiplier higher than stock? Something like all cores turbo exploit for xeon e5 v3 cpus
    [​IMG]
    2660x30.png

    e5 2660 all cores at 3Ghz (multiplier 30x) on Dell T5600 0Y56T3 motherboard
    2 CPU - 16 Core - 32 Threads
    Intel Xeon E5 2660 @ 2991.78 MHz - CPU-Z VALIDATOR

    Supermicro X9DR3-F 2 CPU - 16 Core - 32 Threads
    Intel Xeon E5 2660 @ 2999.3 MHz - CPU-Z VALIDATOR
     
    #22
  3. n-type

    n-type New Member

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    @BlackArchon yes it can help, for instance 1620 and 1630 v3's show as not overclockable under XTU hardware results. It's okay if someone has benched with XTU but still a few CPU's not listed such as the evasive 14 core 1691 v3.

    @Patriot could be the board holding your CPU back, what does HWiNFO show for ratio overclocking under the CPU properties and/or what does CPU-Z text dump show, especially MSR 0x00000194?
     
    #23
  4. Nanotech

    Nanotech Active Member

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    I doubt it's his motherboard holding him back. The AsRock X99 Taichi is quite widely known as an overclocking board. Could be his specific QS sample is multiplier locked.
     
    #24
  5. BlackArchon

    BlackArchon New Member

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    I've updated the first post with the overclocked Xeons from HWBOT.
     
    #25
  6. jfeldt

    jfeldt Member

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    I have tried overclocking my W3690 in my X8SAX by adjusting the multiplier alone but it does not go above the stock frequency. Either they are not truly unlocked or it is only available on particular motherboards, so we might want to start listing known good combinations for everything.
     
    #26
  7. BlueFox

    BlueFox Active Member

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    1366 Xeons are completely different from anything newer. Only the top end i7 models had unlocked multipliers on 1366. All other CPUs were overclocked via BCLK increase. Back then other high speed buses like PCIe were not tied to it, so you could go very high (very bad idea to change it on anything more modern).
     
    #27
  8. jfeldt

    jfeldt Member

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    So you agree it should be taken out of the list in the OP (along with the 3680)? :)
     
    #28
  9. BlueFox

    BlueFox Active Member

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    Hmm, further research says that that one should be an analogue of an i7 990X, and therefore overclockable (as is the case with newer ones). Wonder why you're having issues.
     
    #29
  10. jfeldt

    jfeldt Member

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    Not sure, I created another thread to keep from cluttering this one up, but I will still leave my suggestion of known working CPU/mobo combos if possible :)
    Overclocking a W3690 on X8SAX
     
    #30
  11. RolloZ170

    RolloZ170 Active Member

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    Attention !!!!!!
    HWBOT shows a CPU-Z screenshot with the world record of a E5-1620 (sandy-bridge) of 5296 Mhz.
    It is made with BCLK of 132.41 mhz, means the 1620 is NOT unlocked.
    Same on the E5-1620 v2 (ivy bridge) BLK=113.97 x 37 = 4216.99Mhz, NOT unlocked........
     
    #31
  12. Patriot

    Patriot Moderator

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    w3680 is definitely multi unlocked...
     
    #32
  13. RolloZ170

    RolloZ170 Active Member

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    have you a screenshot ?
    only i can see is FSB OC, never multi OC
     
    #33
  14. Nanotech

    Nanotech Active Member

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    W3690 is also multiplier unlocked. Can confirm as I had the W3690 and using an ASUS X58 motherboard was able to overclock it to 4.0Ghz using multiplier adjustments only.
     
    #34
  15. RolloZ170

    RolloZ170 Active Member

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    Xeon E5-1660 v3 is.........
    Zwischenablage09.jpg
    ...hey HWinfo misses the 1660 v3 in sspec database.
    Zwischenablage03c.jpg
     
    #35
  16. BlackArchon

    BlackArchon New Member

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    The fact that you haven't seen a E5-1620 with a higher multiplier than its base value doesn't prove it is locked. However, it's a clue. I will add a remark to the E5-1620 and the E5-1620 v2 on the list.
     
    #36
  17. Patriot

    Patriot Moderator

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    That said, the only overclock results I have with the w3690 were buss overclocks... which suggests I got better performance that way. At the time I got my hands on these... I was already running dual 2680s soooo no cpu-z screenshots of 4.4ghz that I appear to have handy. It is most definitely your board. I will have to pull this chip and swap it to another couple of boards and see if the 1680v3 will open up.
     
    #37
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