E6750 + Asus P5K Deluxe

Discussion in 'Intel x86 CPUs and chipsets' started by eva2000, Jul 15, 2007.

  1. eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    Well I've had these E6750 G0 stepping cpus for just under 3 weeks as some folks have known ;)

    E6750 'G0' stepping with L710A438 batch - Malaysia plant - week 10, 2007.

    (click image for close up of IHS)
    [​IMG]

    E6x50 vs E6x00

    From what I have read and seen, the only difference these E6x50 have from their older siblings, E6x00 is that E6x50 have:
    • Higher default front side bus speed of 1333Mhz versus 1067Mhz.
    • Inclusion of TXT - Intel Trusted Execution Technology to protect sensitive information from software related attacks. Exception being the E6540 cpu which is same as E6550 but without TXT.
    Other than those 2 new features, the still has the same shared 4MB L2 cache. Reviews popping up on the internet, show E6750 has around 1-2% advantage over E6700 at default speeds due to the higher front side bus speed 8x333FSB vs 10x266FSB. But this higher default front side bus speed, also translates into slighty higher idle or EIST enabled idle speed temps.

    System
    • Intel Core 2 Duo E6750 ES - L710A438 G0
    • Corsair Nautilus 500 3/8" ID
    • Asus P5K Deluxe 0311 bios
    • 128MB Gainward FX5200 PCI
    • 2x1GB Crucial PC2-8500 Ballistix dual channel kit in black dimm slots
    • 74GB WD Raptor 8MB on SATA 2 port
    • Pioneer DVR-08 Burner
    • Sony FDD
    • 1KW PCP&C SLI psu
    • WinXP Pro SP2

    We've heard of E6850/E6550 'G0' ES samples doing awesome overclocks of 3.6ghz at stock vcore or high 540-550+ FSB. But there also seems to be 'G0' steppings that aren't as good and have FSB walls around 475-495FSB (could be motherboard/bios limit ? ).

    This E6750 'G0' I'm testing is one of those more average ones. This E6750 'G0' stepping seems to behave like my Intel Core 2 Extreme X6800 L627A872 cpu on Asus P5K Deluxe maxing out FSB around 490-495FSB with similar vcore to clock speed points at 3600Mhz at 1.43-1.45v and 3800Mhz at 1.5-1.55v and both run very cool even with high vcore.

    The E6750 'G0' does run exceptionally colder though. With PECI enabled in bios, the E6750 as reported by AI Suite is running cooler and is within 4-8C of coretemp 0.94 reported temps. With PECI disabled, it's reported in AI Suite to be 10-12C hotter than coretemp 0.94 reported temps.

    E6750 @2671Mhz - 8x333FSB 1:1​


    First look at E6750 at stock speeds of 8x333FSB.

    Settings Used:
    Room temp = 25.5C to 27.5C

    CPU @Idle
    [​IMG]

    Prime95 v25.2 Small FFTs Load
    [​IMG]

    Prime95 v25.2 Post Load Idle
    [​IMG]
     
    Last edited: Jul 15, 2007
  2. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    E6750 @3600Mhz - 8x450FSB 1:1​


    Next my favourite clock speed to aim for @3600Mhz - 8x450FSB 1:1

    Settings Used:
    Prime95 v25.2 Small FFTs Load
    [​IMG]

    Post Load Idle
    [​IMG]

    Super Pi 1M
    [​IMG]

    Super Pi 32M
    [​IMG]

    Everest Ultimate 4.00.1033 Build
    [​IMG]

    Nuclearus 2.0 RC1
    [​IMG]

    Cinebench 95
    [​IMG]
     
  3. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    E6750 @3800Mhz - 8x475FSB 1:1​


    Vcore needs a substantial increase to get both cores bench stable @3800Mhz - 8x475FSB

    Settings Used:
    Super Pi 32M

    Nice and fast times.. just the way I like it!

    Single 32M
    [​IMG]

    Dual 32M
    [​IMG]

    Everest Ultimate 4.00.1033 Build
    [​IMG]

    Nuclearus 2.0 RC1
    [​IMG]

    Cinebench 95
    [​IMG]
     
  4. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    E6750 @3840-3920Mhz - 8x480FSB-490FSB 1:1​


    Maxing out the FSB on E6750 'G0' seems to be around 490FSB stable and 495FSB i can probably pull off with some tweaking.

    Super Pi 32M

    3840Mhz - 8x480FSB 1:1 = 12m 47.032s
    3920Mhz - 8x490FSB 1:1 = 12m 31.187s

    Everest Ultimate 4.00.1033

    @3840Mhz - 8x480FSB 1:1
    [​IMG]

    @3920Mhz - 8x490FSB 1:1
    [​IMG]

    Nuclearus 2.0 RC1

    @3920Mhz - 8x490FSB 1:1
    [​IMG]
     
  5. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    E6750 @3920Mhz - 8x490FSB 4:5​


    Now let's see what using 4:5 memory divider can bring in Super Pi 1M & 32M

    [​IMG]

    [​IMG]

    Everest Ultimate 4.00.1033 Bandwidth
    [​IMG]

    Not bad for loose memory timings @612Mhz 5-5-4-5. Still bit slower clock for clock than tighter timings @8x488FSB 5:6 with 585mhz 4-4-4-9 with my Q6600 here.
     
  6. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    2x1GB Crucial PC2-8500 Ballistix @665.8Mhz 5-6-5-9​


    [​IMG]

    Thought I'd loosen up the memory timings to 5-6-5-9 and see how far I can go at 2.55v vdimm max with my 2x1GB Crucial PC2-8500 Ballistix dual channel kit in black dimm slots. Swapped in 92x38mm Delta 120cfm fan to cool the memory via a rheobus fan controller :)

    Here's where I ended up @665.8Mhz 5-6-5-9 6-35-8-6-8 at 2.55v which is the highest memory frequency I've done to complete Super Pi 32M on any motherboard. Previous best was @650mhz 5-5-5-18 on Asus 680i Striker Extreme with 2x1GB OCZ PC2-9200 FlexXLC at 2.550v.

    [​IMG]

    [​IMG]

    [​IMG]
     
  7. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    Quest to hit 4002Mhz​


    Found i could memtest86+ v1.70 if i pushed the CPU PLL voltage in bios from 1.6v to 1.8v (max). Also meant I could squeeze out a bit more FSB with 8x493FSB boot from bios into windows and setFSB bump from 493FSB to 500FSB :)

    @8x493FSB at 1.6375v bios set​

    [​IMG]

    [​IMG]

    [​IMG]

    @498FSB at 1.6375v bios set​

    [​IMG]

    @500FSB at 1.6375v bios set​

    [​IMG]
     
  8. Chocco

    Chocco Member

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    Sheesh man nice results!
    Wat cooling are you using btw?

    *wonders If Ill get anything more out of wat I got now*
     
  9. romaniac

    romaniac Member

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    nice results dude!

    i got a new rig the other day with an e6750, never overclocked before but I may give it a go ;)

    I have 4gb 667mhz kingston ram with a tuniq tower in a stacker 810 case with all fans on.

    Current cpu temp idle is 12deg
     
  10. rugged

    rugged New Member

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    damn where do u live?
     
  11. davemelb

    davemelb Member

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    A good motherboard can make a good CPU look like an excellent CPU. Intel C2D + Asus motherboards = :thumbup:

    Another good write up eva2000. I enjoy reading your posts. Keep up the good work :)
     
  12. slobber

    slobber Member

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    Great comprehensive results eva, thanks for sharing :thumbup:

    Looks like my e6750 may be a 'bit' of a dog :eek:

    3.20GHz @ default Vcore of 1.35V it cannot pass orthos small or large FFT for more than a few minutes with iGuru reporting 1.33Vcore

    These IP35 Pro boards wont let you lower Vcore below 1.35V :thumbdn: , not that it really matters for me but too bad if you want to undervolt

    oh and initial testing shows FSB wall someware between 480 and 490FSB
     
  13. romaniac

    romaniac Member

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    melbourne northern suburbs
     
  14. OP
    OP
    eva2000

    eva2000 DDR1/DDR2/DDR3 Addict

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    thanks guys... as to what cooling it's listed in very firstpost under system specs used and in the text caption in every screenshot ;) = Corsair Nautilus 500 water cooling.

    yeah slobber, the max FSB seems about same as the E6750 G0 ES cpus I have and same as the early reviews across the internet if you google for E6750 reviews.

    I'm going to try my other E6750 G0 in Blitz Formula (SE) and see if the cpu level up option in bios will help get a higher max FSB :)
     
    Last edited: Jul 17, 2007
  15. Cadillac84

    Cadillac84 Member

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    You shouldn't have told him that!

    The reason he asked is he wants to come rip off your system (esp your 4 GB RAM) :D
     
  16. Gaidin

    Gaidin Member

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    Well, that AND because he's wondering how air cooling lets you run sub-ambient temps on your CPU :lol:
     
  17. romaniac

    romaniac Member

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  18. Technofatigue

    Technofatigue Member

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  19. gizmo_melb

    gizmo_melb (Banned or Deleted)

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    hiya,

    what make/model motherboard do you have please? I'm looking at buying the 4GB 667Mhz Kingston memory kit from MSY (I'm making an assumption that is what you've got) so I'm interested in which mobo you're running it on. I've got a Gigabyte P35C-DS3 something or other.
     
  20. romaniac

    romaniac Member

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    i have a gigabyte p35-ds3p and 4gb kingston 667 ram
     

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