GSKILL TridentX + Z77, What is the right memory for Z77?

Discussion in 'Overclocking & Hardware' started by youngpro, Apr 28, 2012.

  1. youngpro

    youngpro Member

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    So with the launch of Z77 comes this big jump in memory frequency over previous platforms (well previous Intel platforms at least) and the bandwidth gains that come with it.

    So far it looks like there are three main schools of thought,

    1) Insanely tight timings (7-10 perhaps 6-10/9 or maybe an Andre/Shamino special 5-9) with memory frequencies between 2400-2700
    2) Reasonable timings (9-11/12 10-11/12) with frequencies 2600-2800
    3) Loose timings and high frequencies 2800+

    Let me just weigh in on my person thoughts real quick.

    (1) Insanely tight timings and high frequency will give you the best result, but it does in most cases require LN2 on the memory and brings with it high risks. If you are going after the 3DMark01 or SuperPI 32m world record, yes this is the best option, but not for every day benching. This would be done with PSC or BBSE.

    (2) The ideal option for most users. A good mix of bandwidth, reasonable timings and frequency will be optimal for most benchmarks. The risk is also very low with this option, as you can run this on air.

    (3) So far in my testing I havn't found a time when this is the best option. In most cases to run memory this high you have to loosen off the secondary and tertiary (third) timings and you take a bandwidth hit.

    When you bench Ivy Bridge, it is more than likely your chip will bench at full pot or close to full pot. Due to these cold temperatures and the fact your cold boot bug will require you to continually warm up/cool down means condensation/water will probably gravitate towards your memory slots, just like on AMD. Andre/Shamino need some serious props for running their memory on subzero for all their benching, that seriously isn't easy and adds another level of risk/troubleshooting into the benching. That aside, most benchers will want to run memory on air as it will be much easier to manage especially when ice/water is already impacting the memory slots, which is why for 99% of benching I choose options (2).

    GSKILL have put out their TridentX series of kits, all of which look very strong. I have tested the F3-266611D and Dino is testing the 2600 and they both have strong performance. Here is some results that I have been able to achieve with probably the strongest memory clocker around the ASUS M5G.

    The Rig
    GSKILL F3-266611D rated at 2666 11-13-13-35 2N
    ASUS ROG Maximus 5 Gene Z77
    Intel 3570K E1
    Combination of air cooler and single stage (not really any noticeable memory clocking difference)

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    These sticks are designed specially for that (2) I was talking about, reasonable timings and good frequency. Please keep in mind on this platform TRCD doesn't really make much of a bandwidth difference, tightening CAS can be good for 32m, but timings as you might be familiar with them on Sandy Bridge/Gulftown act in totally different ways.


    Performance Figures

    Stock frequency, tightened up with 10-12-12-31 1T
    [​IMG]

    1350 MHz, 10-13-13-31 1T
    [​IMG]

    1400 MHz 11-13-13-31 1T, 1.7v
    [​IMG]

    1423 11-13-13-31 1T, 1.74v
    [​IMG]

    1443 11-13-13-31 1T, 1.74v, slightly looser subtimings
    [​IMG]

    As you can see from these results, the bandwidth is a little up and down. Some of that can be to do with the CPU frequency, but also some is the tightening/loosening of sub-timings to achieve specific frequencies. While this kit is designed specially to offer option 2 with good timings/good frequency, it also has the super high frequency there if you want it. For me benching day in day out I would be looking to sit it around 1333 10-12-12 or 1350 10-13-13 as this will give me plenty of bandwidth for 3D and also give strong 2D performance.
     
    Last edited: Apr 28, 2012
  2. Madengineer

    Madengineer Member

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    Nice times!

    Dont they still have the NDA on Ivy until release?
     
  3. OP
    OP
    youngpro

    youngpro Member

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    NDA's all up now mate
     
  4. Madengineer

    Madengineer Member

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    Oh cool. Surprised more people havent released anything than.....
     
  5. bobbth

    bobbth Member

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    nope IVY has been 'released' on paper, just not in stores.
     
  6. jjjc_93

    jjjc_93 Member

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    Awesome stuff Pro. Seeing some sick memory clocks on Ivy and it's exciting stuff. Thanks for sharing as always.

    Are we still seeing a big performance increase in spi from dropping subtimings with Ivy, or has it become less relevant now?
     
  7. OP
    OP
    youngpro

    youngpro Member

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    yeah somewhat, but some timings that gave big gains in the past dont do anything now, very interesting ineeded
     
  8. GeneralDeath

    GeneralDeath Member

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    Nice love it and can't wait myself to have a play with some High freq Ram on Z77 and Ivy:thumbup:
     
  9. Yamunsa

    Yamunsa Member

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    not having played with the platform, and never before got my rams over 2600mhz, i had wondered if raw mhz was going to overpower the need for tight timings. do you think this will be the case, (2000 cl7 vs 2800 cl11)?

    i also noticed the white smear on the hs and some discolouration down near the pins - do you have some cold benches we can have a look at as i'd really like to see what these rams can do?
     
  10. matty_0508

    matty_0508 Member

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    So far it looks like there are three main schools of thought,

    1) Insanely tight timings (7-10 perhaps 6-10/9 or maybe an Andre/Shamino special 5-9) with memory frequencies between 2400-2700
    2) Reasonable timings (9-11/12 10-11/12) with frequencies 2600-2800
    3) Loose timings and high frequencies 2800+

    Looking forward to reading results in relation to the number "1)" item you listed. What happened?
     
  11. OP
    OP
    youngpro

    youngpro Member

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    nah sorry i didnt explain myself properly,

    i was just discussing the three options possible options, i didnt have plans to show tight timings in this thread, as the tridents arnt designed for low frequency tight timings,

    actually if you look in festers ivy memory clocking thread http://forums.overclockers.com.au/showthread.php?t=1024590 you can see some tight results from my Corsair GTX6 with tighter timings 7-10 i think

    @yamunsa, if you are running 2000c7 you are leaving SO much performance behind, the raw minimum you want to be at is 2400, and probably 2600+ is the place to be for 32m, whatever you can get tightest in the range of 2500-2750 is going to give you your best performance
     
  12. Rob2012

    Rob2012 Member

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    1.65v on the RAM? I'm assuming Z77 boards like 1.5v the same as P67/Z68.
     
  13. DeCan

    DeCan Member

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    From what I understand you divide CL with the MHZ.

    So in your case 11/2666= 0.004126 the lower this value the faster the ram timing.

    CL6/1600 = 0.00375 Faster
    CL7/1600 = 0.004375 slower
    CL8/1600 = 0.005 slower

    I'm pretty sure that's how it works.
     
  14. Jimba86

    Jimba86 Member

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    :shock:

    and i thought 2300 on the GTX3 kits were fast...

    nice work pro:thumbup:
     
  15. t8y

    t8y Member

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    no, thats just what intel specifies.
    if you are happy to ignore that (and to OC memory, you pretty much have to) you can run much more.
     
  16. OP
    OP
    youngpro

    youngpro Member

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    volts = good = higher frequency
     
  17. jjjc_93

    jjjc_93 Member

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    If you find me running under 1.75v vddr then you've seen me in a rare moment. :p
     
  18. kazen

    kazen (Banned or Deleted)

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    What's the limit on air cooling for vDIMM?
    I've run 1.72 I think, never really tried harder.
     
  19. Uncle-Fester

    Uncle-Fester Member

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    I use 1.8v everyday nps.
     
  20. Rob2012

    Rob2012 Member

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    Ah I see... thanks. I read somewhere that running higher than 1.5v can damage the cpu.

    Also, great job youngpro :)
     

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