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  • BLHealthy4life - Sunday, May 24, 2009 - link

    I have this DFI board and I cannot get the 21x Multiplier to activate. I have read everything on the net about it and have enabled/disabled this and that as well as have the performance profile set in Windows.

    I didn't have a problem with the 21x on my R2E because it was a multiplier in the menu that I could enable regardless of any other setting....what is with DFI and not having this option???

  • rsabluebulls - Wednesday, May 20, 2009 - link

    i wonderwhat cooler or water cooling did they use when they did this test... 27-29 degrees idle @ 4ghz is quite impressive. i have an i7 D0 chip with a TRUE heatsink and fan and my 3.5Ghz overclock idles at 40 degrees and 69 on 100% full load (running RipBot)... Reply
  • jeffreaux2 - Friday, April 24, 2009 - link

    I recieved a Core i7 920 yesterday from Newegg. It is also the DO stepping version. SLBEJ. Reply
  • claytontullos - Thursday, April 23, 2009 - link

    A i7 that I ordered from newegg arrived today and it is S-spec: SLBEJ. Reply
  • thebeastie - Tuesday, April 14, 2009 - link

    So when can we bloody buy one?
    This is the only thing that is holding me back from buying a PC

  • ap90033 - Friday, April 17, 2009 - link

    I cant wait for the OC guide for this... I have the Vigor Monsoon III with the 920 Rev D0 on an EVGA X58 Board so I am Ready... :) Reply
  • Beno - Thursday, April 09, 2009 - link

    please use core temp or proper software for cpu temps Reply
  • davision - Thursday, April 09, 2009 - link

    I thought I read in numerous places that going above 1.65 was a real no-no with these i7 boards.

    What am I missing?
  • Pedros - Thursday, April 09, 2009 - link

    Well, each cpu is a cpu ...

    i have a C0 stepping that can do 3.8Ghz stable at 1.28 ... at 1.27 it BSOD's ... if i use OCCT it's stable, if i use prime it BSOD's...

    So, it really depends of lots of factors...

    This new D0, if you notice are the batch ****B**** ... in the C0 we already knew that the B batch was awesome, could overclock better, with less vcore that results in less temperature ... so this D0 is basically the best batch of the C0 but as "mainstream".

  • Gary Key - Wednesday, April 08, 2009 - link

    The screenshots provided utilized the CoolIt Systems Freezone Elite and I can go higher with it. The "short" review I am working on now will show the CoolIt Domino and the Vigor Monsoon III coolers, hopefully I can have the retail cooler results finished also.

    I am at 4.3GHz on both of the those coolers and just passed the 24 hour mark of our test suite. At this point I believe the settings we used are 24/7 stable and have started doing the individual tests for the review. However, I think 4.2 at 1.31V probably provides a better margin of safety on air and will probably recommend that setting. Both of our retail processors performed identically in the testing. I have another retail unit arriving today that I will check quickly this evening.
  • Beno - Saturday, April 11, 2009 - link

    no way you're getting those temps with freezone elite.
    or the lan party show low temps.

    a friend had a freezone elite and barely keeping up with the heat.
  • Beno - Saturday, April 11, 2009 - link

    edit: those are idle temps right? :banghead: Reply
  • orionmgomg - Thursday, April 09, 2009 - link

    I have been playing with the vcore - and I have always needed it to be above 1.35 to post with any OC with CO steping- It shows 1.368 Vcoe in CPUz for a stable 3.6Ghz OC, (I forgot the exact BIOS Voltage I settled on...) I am not able to POST with lower Vcore - but your hitting 4+ on air with 1.31 Vcore? Please advise.

    Also, IOH Voltage? New to the X58 any insite on voltages "peramitors" for the new voltage options with the X58s.

  • SirKronan - Thursday, April 09, 2009 - link

    Thank you! You i7 OC'ers continue to give me hope. My C0 processor sits in its box, motherboard on the shelf as I drool, waiting for my RAM to arrive ... Oh that I had Amazon prime BEFORE I placed the order!

    Appreciate this a lot guys.
  • DrNip - Wednesday, April 08, 2009 - link

    msgclb will you please roll back your BIOS to the original to see if it will post with the D0 and the DFI LP UT X58-T3eH8. I have this setup and don't have a C0 to update my BIOS and can't seem to get my mobo to post. Many think it is because of the BIOS needing updated. Thanks. Reply
  • msgclb - Wednesday, April 08, 2009 - link

    I finally got a Core i7 920 D0 from TankGuys that I've installed in my DFI LanParty UT X58-T3eH8. What I now need is that 03/18/2009 BIOS that you say is the 'latest magical mystical BIOS from Oskar, Jarry, & Company'. Reply
  • sleepeeg3 - Wednesday, April 08, 2009 - link

    D0 is a cosmetic change. Nothing more.">
  • thebeastie - Tuesday, April 07, 2009 - link

    I want it faster!

  • thelastknight - Tuesday, April 07, 2009 - link

    So can you answer the question on what specifically you were using to cool this new proc? 4.3G's is definately a new high for air if so.
  • sparkuss - Tuesday, April 07, 2009 - link

    This article now says (UPDATED). There isn't any bolding or such, so anyone notice what is new? Reply
  • Beno - Tuesday, April 07, 2009 - link

    trying to find whats new: fail Reply
  • SirKronan - Tuesday, April 07, 2009 - link

    Lol. Yeah, where's the update? Hehe. Seems pretty similar to what I read yesterday ...

    Perhaps they're working on it as we speak!
  • Rajinder Gill - Tuesday, April 07, 2009 - link

    I think Gary added some screenshots to the gallery images. There's some screenies over 4.4GHz in there now. He manged to get those clocks stable last night after the blog post went up.

  • SirKronan - Wednesday, April 08, 2009 - link

    What cooling are you using? One poster said that he's pretty sure it's liquid because of the 27c temp being unrealistic with such an OC on air. I would like to know for sure, though, and what are your max OC's on the new D0 with air, if this is indeed liquid? Reply
  • Casper42 - Monday, April 06, 2009 - link

    I may just be blind here, but did they say if 4.3Ghz was on Air or Water or LN2?

    If that is Air, then its quite remarkable.
    A 60% improvement in speed by investing $75 in cooling is crazy. Especially considering the 940s still go for $500+
  • ikjadoon - Monday, April 06, 2009 - link

    Unless this D0 is really bitching, I'm pretty sure it is liquid cooling. 27C idle (I'm assuming idle from the screenie?) is not something an air-cooler can do on a 4.3GHz i7.

  • woffen - Tuesday, April 07, 2009 - link

    The Smart Guardian software is known to show to low CPU temperatures. The other temps it shows somewhat OK though. Reply
  • rcocchiararo - Monday, April 06, 2009 - link

    When would one detect that the IOH is what needs more juice for getting higher clock/bclk ? Reply
  • orionmgomg - Monday, April 06, 2009 - link

    I just built my first i7 system, and unlike with most of my other builds - I did not invest 1000$ plus on the Extreme Edition CPUs as I had expreianced myself with the core 2s that they OCed so well, and with all the news about the new i7 920 being able to get to 4.0Ghz with little effort I thought I would save the movey.

    I have really hit a wall at 3.6, post at 3.8, and even at 3.999 (190 bclk w/turbo enabled...) anything above 3.6 is not stable no matter what I do, and I still do not have all the exact "best" QPI & Uclk settings, voltages has also been a lot more involved compaired to the C2Ds.

    I have seen forums, articles and even videos of people OCing the i7 920 to 4.0 without even adjusting the auto voltages - posting first time every time... mine is not as lucky.

    Should I buy the DO - I have purchased over 25 CPUs from Tank Guys, but they are usually 15 to 25% more expensive than the egg... I have to have my CPU core up to at least 3.6 (minimum) to leverage my GPUs...

    Inetel i7 920 (co/c1)
    ASUS P6T Delux V2
    6GBs OCZ Platinum 16000 7-7-7-24 (1.64v)
    Samsung Spinpoint F DT 500GB (RAID 0)
    EVGA GTX 885
  • MadMan007 - Monday, April 06, 2009 - link

    Seems like a good rule of thumb, with a few possible exceptions, for Intel CPUs ever since Core 2 came out is wait for the revised stepping of a given CPU die. Reply
  • aigomorla - Monday, April 06, 2009 - link

    Just like to say i told you guys so.

    D0 - HOT and FTW!!!!

    But i showed you guys this last week in the forums with my 975 D0. :P
  • DigitalFreak - Monday, April 06, 2009 - link

    What, you want a cookie or something? Reply
  • aigomorla - Monday, April 06, 2009 - link

    Need to add one more comment.

    These Chips DO NOT RUN COOLER.

    If they do its because of the lower voltage requirement for a stable overclock.

    But push the voltage and overclock the same on both C0/C1 vs a D0, you'll run near the same heat.

    i7 is NOT a cool chip when overclocked.
  • 7Enigma - Wednesday, April 08, 2009 - link

    Statement #1: These Chips DO NOT RUN COOLER.

    Statement #2 (immediately after statement #1): If they do its because of the lower voltage requirement for a stable overclock.

    Well which one is it? :) You kind of destroyed your own argument in 2 sentences. Of course if you run the same voltage at the same clock speed through C/D they will produce the same amount of heat. That's basic science. They run cooler because you can run the same clock speed at LOWER voltages on the D0 chip, which in this case (but not always) allows for a higher maximum overclock on average.

    Now this was an N=2, which really isn't statistically significant, but I think the general trend is sound...
  • taltamir - Monday, April 06, 2009 - link

    "The question that has not been answered yet is how our C0 processors steppings faired"

    Should say FARED not FAIRED.
  • tshen83 - Monday, April 06, 2009 - link

    It is a known overclocker's secret that Xeons mostly overclock better than the equivalent consumer counter parts.

    All Xeons are D0 spec already. Just go to Intel sSpec finder page. All Xeon 3500s and Xeon 5500s are stepping D0.

    The interesting combination is the Asus Z8NA-D6C board with 2 Xeon E5504 D0 2Ghz, giving you SMP 8 real Nehalem cores(HyperThreading disabled, but that's good for overclocking), and see if you can overclock those into SMP 4Ghz+ :)
  • Rajinder Gill - Monday, April 06, 2009 - link

    The 95w Xeons look tasty, but also are expensive. Secondly, you get the additional QPi link, so it's unknown how they'll fare in host clock abilities (ultimately QPI speed). IF that rules out high BCLk ability you're relegated to the big leagues. You'll want one which at least comes in over 2.6GHz I think, which at current pricing puts it in the $1100 category. The X5570 looks creamy at $1700. I'd love to test the higher multiplier Xeon's out for overclocking.

    The 920's are still specced at 130w TDP or so, so not in the league of the 95w Xeons - but a lot cheaper for a punt.

  • tshen83 - Monday, April 06, 2009 - link

    Well, the point is, get a Xeon equivalent.

    Xeon W3520 is the i7-920 equivalent. And it will definitely overclock better, supports ECC ram, and supports more datacenter features.

    X5570 is a pretty good processor, but it is really designed to challenge 4S AMD and 4S Dunnington in DB applications where they load up to 144GB of ram in a system. If you compare the X5570 to Xeon X7460s, or Opteron 8384s then it is cheap.

    The point isn't the highest end. The highest end parts is simply technological demonstrations, proving that Intel's manufacturing is capable of doing the clock speed. The real juice is the lowest end parts such as the E5504s selling for as little as $227. I bet you even the E5504s at 2.0Ghz can be as good as AMD's Opteron 2384s at 2.7Ghz which is priced at 700 dollars+ compared to Intel's bargain basement pricing. AMD would have no choice but to cut the price of their entire Opteron line, especially the top end ones if they aren't even as fast as the E5504s. The current pricing structure from AMD isn't competitive.

    If 2 Intel's X5570 at 2.93Ghz($1700 each) can perform the same as 4 Opteron 8384s(1900 each), don't you see the need for AMD to cut price by 50% across the entire line? Performance per Mhz, per watt or per dollar is so screwed up for AMD, it is not even funny any more.
  • Rajinder Gill - Monday, April 06, 2009 - link

    I'd actually overlooked those. So long as the memory multi's can be fully unlocked as they are with the 920 it would be a cool option. Reply
  • tshen83 - Monday, April 06, 2009 - link

    I do know what I am talking about :)">">

    Whatever conclusion you can draw from the two links I just posted, just keep it to yourself. If you have the intelligence to understand those links, you would know why AMD is so screwed.
  • tshen83 - Monday, April 06, 2009 - link

    Sorry, one of the links I posted here is wrong. read the next set of benchmarks I posted.

    Too many benchmarks.
  • tshen83 - Monday, April 06, 2009 - link

    Some more benchs:


    Opteron 2384">
  • chizow - Monday, April 06, 2009 - link

    Was HT enabled on that D0 @ 4.3GHz? Wasn't made clear from what I read, apologize if it was mentioned and I missed it.

    Looks great so far, these later batch i7 are great overclockers and performers! I'm very pleased with mine even though I wasn't planning to upgrade until P55/i5 or 32nm Westmere.
  • chizow - Monday, April 06, 2009 - link

    Nm, just saw you had 8 threads in CPU-Z. In any case, that's extremely impressive with HT ON to hit 4.3GHz. Reply
  • Bozo Galora - Monday, April 06, 2009 - link

    yeah, if you buy today you will prob get a C0. All the CPU's on the just expired MicroCenter 920's special @$200 were C0 (Maybe they were clearing em out)

    the are the only ones I am aware of who actually name and guarantee a stepping
  • chizow - Monday, April 06, 2009 - link

    To add to this, MicroCenter actually replaced their entire stock nationally after the April 1st sale where they ran out literally across the country (I checked lol).

    It looks like their current batch is also all C0, as I went to my local MC that had 40-something newly in stock Saturday. They were all also C0, although pack date was mid-March.

    D0 will probably start getting mixed in at retailers with high turnover, but I'd say we're still a bit off from seeing high availability. A place like Tank Guys that guarantees stepping is probably the safest followed by B&M like Fry's or MicroCenter. To clarify, you're looking for S-SPEC SLBEH for the D0.

    I just installed a batch 3843A C0 and its no slouch at 3.9GHz with HT ON @ 1.32V, but its not getting to 4.3GHz. If these D0 prove to be much better clockers at low voltages, I'll probably swap one in when MC gets them in. At $230 I won't lose much on the swap by reselling the C0.
  • Aivas47a - Monday, April 06, 2009 - link

    The code for the D0 stepping 920 is SLBEJ, not SLBEH. Reply
  • Furyu - Thursday, September 10, 2009 - link

    Hmmm so let me guess if it says SLBCH I got screwed and have a CO? Reply
  • trajan - Monday, April 06, 2009 - link

    Oof. I was hoping to still make the $200 sale. $230 isn't bad though. So there's no way I can tell from the box or in the store whether it C0 or D0? Thanks also to the above poster for clarifying, I didn't realize it was actually a full revision. Reply
  • trajan - Monday, April 06, 2009 - link

    Sorry to take the first comment spot with a dumb question, but as I'm days away from picking up a 920, I have to ask.. What exactly is this C0, D0 business? Are these just manufacturing batches? That is, if I buy a 920 today, am I getting whatever is in stock? Is there anyway to tell in advance.

    Sorry if I'm way off the mark here :-)
  • 457R4LDR34DKN07 - Monday, April 06, 2009 - link

    Yes, to both of your questions. It isn't technically a manufacturing batch, it's a revision of the chip design. It generally runs better all around and usually more overclockable. Reply

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