W3520 H20 @4877Mhz - DFI UT X58-T3EH8 !

Discussion in 'Intel x86 CPUs and chipsets' started by eva2000, Jun 3, 2009.

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  1. eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    Time to really push my W3520 on H20 cooling still. Managed to break alot of personal best benchmarks for max validation, max uncore frequency achieved, Super Pi 1M, 32M and Pi Fast on i7/X58 platform :)

    • Super Pi 32M HT Enabled max = 4677Mhz at 1.488v
    • Super Pi 32M HT Disabled max = 4794Mhz at 1.552v
    • CPUZ Validation HT Disabled max = 4877Mhz at 1.584v

    System:
    • Intel Xeon W3520 3845A935 D0 (Xeon equivalent of Core i7 920 D0)
    • EK Supreme LT 1366 / FESER 480 / MCP655
    • DFI UT X58-T3EH8 04/28 beta
    • HD4870x2 (HIS 4870X2 to Asus Top bios) with ATI WinXP 9.5
    • 6GB Corsair Dominator GT DDR3-2000Mhz 7-8-7-20
    • 750GB Samsung SATAII
    • Silverstone OP1200 PSU
    • Triple boot - WinXP Pro SP3 / Vista Ultimate 64Bit SP2 / Win7 Ultimate 64bit RC

    Max Validation @4877Mhz at 1.584v


    Max Uncore Frequency @4645.6Mhz

    [​IMG]

    [​IMG]

    Super Pi 1M & PiFast @4802Mhz at 1.584v


    [​IMG]

    [​IMG]

    Super Pi 32M @4794Mhz at 1.552v


    [​IMG]

    Super Pi 32M @4677Mhz at 1.488v


    [​IMG]

    Max Bclk Validation

    So far 235bclk is max for validation. Messing with voltages to see if I can get more :)

    [​IMG]

    [​IMG]
     
    Last edited: Jun 4, 2009
  2. rbdirty

    rbdirty Member

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    Nice going...

    I have the same batch as you, taken it to 4500 on water, not any further just yet...

    What were your load temps like?
     
  3. youngpro

    youngpro Member

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    cmon now george, your just showing off with those ram clocks ;)
     
  4. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    around 75-80C load as the above benchmarks don't stress system as much.

    hehe... was just taking it easy for ram clocks :D

    Will try higher clocks this weekend as forecast has some nice cold night time weather coming my way http://www.weatherzone.com.au/local/local.jsp?lt=aploc&lc=9647 :D
     
    Last edited: Jun 3, 2009
  5. Frenchlick

    Frenchlick Member

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    Great clocks mate, I've got the same batch cpu they certainly are decent ones. Looks like those dfi boards do nicely with them too. I so need some better ram to clock mine any higher is there any decent 1800-2000mhz ram you could suggest ta mate.
     
  6. OP
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    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    Thanks :)

    Any memory listed on my short list here http://i4memory.com/f83/eva2000s-ddr3-triple-channel-memory-kits-short-list-14047/ should be enough to allow almost any i7 cpu to clock to it's max potential. Of course the higher end stuff should allow tighter timings if clock for clock efficiency is also required :)
     
  7. Frenchlick

    Frenchlick Member

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    Thanks Eva will check it out.
     
  8. OP
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    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    You're welcome :)

    Max Bclk Validation

    So far 235bclk is max for validation. Messing with voltages to see if I can get more :)

    [​IMG]

    [​IMG]
     
  9. Smoke87

    Smoke87 Member

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    Those voltages are just horrifying Eva. I was about to pipe and say "Hey want to sell that 3520" :p
     
  10. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    The answer would of been noooo way :D
     
  11. ocean

    ocean Member

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    Hey eva2000

    AWESOME work with these overclocks!!

    Just a quick question for you.

    Can the T3EH8 adjust QPI and Uncore multipliers on a W3520 from the BIOS? (I need to be able to do it from the BIOS as my day to day operating system is Ubuntu).

    I've heard lots of crap around about them being locked/unlocked. All I know is that I can't adjust these on my P6T. All I get is the ram clock (x6 or x8). If the T3EH8 can do it I will buy one! Today!

    Thanks heaps!

    -Patrick
     
  12. OP
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    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    Thanks Ocean, DFI UT X58-T3EH8 handles W3520 same as i7 920 (I have 4 of them) and QPI/uncore totally unlocked as you can see uncore @4600mhz with 20x uncore multiplier with qpi frequency at default 18x multiplier @4140mhz

    • Uncore Frequency = 4600Mhz
      [*]QPI Frequency = 4140Mhz

    Super Pi 32M
    [​IMG]

    Everest Bandwidth
    [​IMG]

    3dmark06 single HD4870x2 stock
    [​IMG]
     
  13. ocean

    ocean Member

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    eva2000 that is excellent news. I will order one right now. Anyone interested in buying a P6T Deluxe V2? :)

    I've seen that you're a bit of a T3EH8 expert! Looks like some very impressive numbers. My W3520 is exactly the same batch/week as yours so I'm hoping for some decent results.

    Do you run any long term (ie 24+ hour) stress tests?

    Have you run the T3EH8 with all 6 ram slots populated?

    Have you lapped any of your i7's? I'm currently having some temperature issues with my TRUE. We're talking load temps of 80+ at 3.6GHz, 1.175VCore, 1.20VUncore, 1.60VRam. Mind you that's running 8 threads of mprime, and 4 64-bit virtual machines running Linpack.

    I'm seriously considering ditching it for a water setup some time this week.

    Man I need to stop hijacking your thread! Sorry!
     
  14. OP
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    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    my everyday is 4000mhz at 1.184v but haven't tried 6 slots ram populated as yet.

    there's different types of cpus out there some batches of i7/13666 run low vcore but high temps while some run higher vcore but low temps

    my 4x i7 920 c0/d0 are high vcore low temp i.e. 4ghz at 1.312-1.344v on air and water around 65-67C while some folks have 4ghz 1.2v batches but cpu temps well into 75-85C.

    my W3520 is low vcore and low temps 4000mhz 1.184v is around 57-60C load :)

    lapping won't make much of a difference.. better off selling cpu and trying another if you can't live with the high load temps.

    Remember though linx/prime95 stress system way beyond 24/7 apps so everyday you probably won't even come close to 90% of the temps you reach on prime95/linx etc.
     
  15. ocean

    ocean Member

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    I've read that elsewhere too. Interesting. I'm yet to find a good explanation as to why that is. I wonder if the IHS's are a bit warped on some chips...?

    I can live with the load temps, it's the instability that I have a problem with. I'm testing 181BCLK at the moment (looking good, 15 hours at full load so far).

    I have a feeling that my QPI speeds are killing me. Last test I tried was a 190BCLK. Box locked solid at around 6 hours. 200BCLK rebooted at around ~2 hours.

    Overclocking this thing has been strange for me - I was seeing errors in Linpack/Prime when I started, but now I just see solid lockups or reboots.

    Anyway I think I might go for the T3EH8, just need to check if my RAM is going to work. I have a one of the 12G OCZ 1600MHz kits (OCZ3P1600LV12GS).

    -Patrick
     
  16. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    The high temp chips most likely due to higher leakage than low temp ones. The high temp chips mostly do well when comes to sub zero cooling - generally clocking higher than low temp cpus. So unless you plan on sub zero cpu cooling, the low temp cpus probably better for normal air/water users.

    Now that I started testing my uncore frequency overhead on W3520, thought I'd see how far I can push it on regular water cooling.

    Dropped bclk to 210-214 and bumped uncore multiplier from 16x default with 8x mem multiplier, to 22x uncore multiplier and managed to push it to @4663Mhz uncore frequency Super Pi 32M stable, @4707Mhz for 4M stable and Everest and screenshot @4760Mhz uncore frequency !!!! Had to jack up both CPU VTT and VDIMM voltage to reach such uncore frequencies :)

    Uncore frequency = 4663.5Mhz​


    [​IMG]

    Uncore frequency = 4707.8Mhz​


    [​IMG]

    [​IMG]

    Uncore frequency = 4760.2Mhz​


    [​IMG]

    System:
    • Intel Xeon W3520 3845A935 D0 (Xeon equivalent of Core i7 920 D0)
    • EK Supreme LT 1366 / FESER 480 / MCP655
    • DFI UT X58-T3EH8 04/28 beta
    • HD4870x2 (HIS 4870X2 to Asus Top bios) with ATI WinXP 9.5
    • 6GB Corsair Dominator GT DDR3-2000Mhz 7-8-7-20
    • 750GB Samsung SATAII
    • Silverstone OP1200 PSU
    • Triple boot - WinXP Pro SP3 / Vista Ultimate 64Bit SP2 / Win7 Ultimate 64bit RC
     
  17. rbdirty

    rbdirty Member

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    A quick question about your motherboard, how many options do you have to set the QPI multiplier?

    My Gigabyte has very limited options and it makes it very hard to keep the QPI clock under control.
     
  18. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    QPI for i7 920/940/950 are limited to 18x, 22x, 24x QPI multipliers as per bios screen shots here http://i4memory.com/f80/dfi-lp-ut-x58-t3eh8-bios-screenshots-12949/ and should be same for all boards regardless of brand as i7 920-950 are locked. For more you need unlocked multi i7 965, 975, xeon 3570 or xeon 3580 cpus.

    older bios pre-Jan, 2009 listed frequencies but newer bioses after 01/06/09 Jan 1st changed to listed them as multipliers

    [​IMG][​IMG]

    [​IMG][​IMG]

    new bios

    [​IMG] [​IMG]

    uncore multi selectable up to 32x

    But on a good board/cpu, QPI frequency should be fine left at 18x multi which is default for i7 920-950 and w3520-3540 cpus anyway. I can easily push 4140mhz QPI frequency but you can't lower it below 18x multi for QPI
     
    Last edited: Jun 6, 2009
  19. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    Pushed the system a bit higher for wPrime v1.55 from 4500mhz to 4600+mhz but used Windows Vista Ultimate 64bit SP2. Limited by water cooling seems as 1024M @4664Mhz fails around 77% mark into the run :(

    32M @4664Mhz
    [​IMG]


    1024M @4622Mhz
    [​IMG]

    System:
    • Intel Xeon W3520 3845A935 D0 (Xeon equivalent of Core i7 920 D0)
    • EK Supreme LT 1366 / FESER 480 / MCP655
    • DFI UT X58-T3EH8 04/28 beta
    • HD4870x2 (HIS 4870X2 to Asus Top bios) with ATI WinXP 9.5
    • 6GB Corsair Dominator GT DDR3-2000Mhz 7-8-7-20
    • 750GB Samsung SATAII
    • Silverstone OP1200 PSU
    • Triple boot - WinXP Pro SP3 / Vista Ultimate 64Bit SP2 / Win7 Ultimate 64bit RC
     
  20. ocean

    ocean Member

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    eva2000:

    I can't thank you enough for your valuable information!

    I've ordered my T3EH8 and some water cooling gear. Lets see where this gets me :)

    There goes my Krud tax bonus lol!
     

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