KHX2000C8D3T1K3/6GX - Elpida MGH-E Hyper + Core i7 980X
This is a discussion on KHX2000C8D3T1K3/6GX - Elpida MGH-E Hyper + Core i7 980X within the DDR3 Intel Memory forums, part of the Intel memory category; By GenAn Any of those kits should do since they all use Elpida Hyper chips, though the Corsair GT 2000 ...
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| | #33 (permalink) |
| Senior Member Join Date: May 27 2010
Posts: 170
| By GenAn Hi thanks for the quick and informative response.
Yes VDIMM was another one of my concerns. I would think it would be better to buy a kit that uses less VDIMM for 2000+/-MHz. From what I can see it seems as if Kingston HyperX T1 needs the most. Also another thing I forgot to mention was the ICs. According to a lot of reviews I have seen the Elpida Hypers are having a lot of problems. I have looked at reviews of the three above mentioned kits and the kit with the least negative reviews ( pertaining to failing Hyper chips ) was the Kingston HyperX T1. Could this be possible due to the lack of people buying Kingston memory, therefore lessening the chances of reported failures? Or are any of the three better than the other? I have a decent understanding of this stuff so if the internals are mainly the same then overall there should not be much of a difference between the kits. However any opinions are always welcome and much appreciated. Thanks. |
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| | #34 (permalink) |
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Hi spoolindsm127 and welcome ![]() As GenAn stated i7 980X loosens the uncore to mem frequency ratio from 2x to 1.5x so you can potentially push memory a bit more before you hit a uncore frequency ceiling see this thread http://i4memory.com/f55/intel-core-i...-ratios-23430/ By spoolindsm127
By spoolindsm127 There's 2x Kingston 2000mhz 8-8-8-24 elpida SKUs, the older original KHX16000D3ULT1K3/6GX which unfortunately were majority from the bad batches of Elpida 50nm MNH-E Hypers ICs and the newer SKU - KHX2000C8D3T1K3/6GX with better improved reliability Elpida 50nm MGH-E Hyper ICs, both do tight 2000mhz timings, the MGH-E seems more likely to do 7-7-7-x compared to MNH-E which do 7-8-7-x. It's probably the older bad SKU giving a bad rep for Kingston 2000C8. But it's too early to tell if the newer SKU is better or not, but seen less folks reports issues with them so far.
But as stated in this thread both SKUs are end of line discontinued now replaced with Kingston 2000mhz cas9 part - KHX2000C9AD3T1K3/6GX which apparently users less performing non-50nm Elpida BDBG ICs see 6GB Kingston HyperX KHX2000C9AD3T1K3/6GX Elpida BDBG Testing And I believe Mushkin's newer kits don't use Elpida Hypers, so you won't get as tight timings on that kit. That leaves with with Corsair Dominator GT 2000C7 7-8-7-20 SKU as the other option for 100% Elpida Hypers, although there's also Patriot 2000mhz CAS8 and Super Talent 2000/2200 CAS8 kits which use Elpida Hypers. Patriot uses very old Elpida MNH-E hypers so could be risky as the weeks reported in GenAn's thread below so week 10-11, 2009 = 910 or 911 which is within range of the bad batch period (no confirmation from any manufacturer as to which weeks batches were bad unfortunately). Not sure what Super Talent 2000/2200 CAS8 Elpida Hyper ics used - I have a few kits I'll test later but not prying off heatsinks heh. 6GB Patriot Viper II PV236G2000LLKB Elpida MNH-E Hyper http://i4memory.com/f83/super-talent...2000-c8-23675/ |
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| | #36 (permalink) |
| Senior Member Join Date: Aug 28 2008
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| By eva2000 I found a pic of some MGH-E that is 09110 used in G.Skill Perfect Storm:
![]() I wonder if the MNH-E from the same period is just "pre" MGH-E, chips that were "fixed" but came out just prior to Elpida changing the code. |
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| | #37 (permalink) |
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Not sure wish there was more publicly accessible info as to how manufacturers date/produce these ICs heh. But as always one thing folks overlook is that power supply quality also effects memory clocks on core i3/i5/i7 memory controllers - well that's what some of the LN2 benchers are saying. |
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| | #38 (permalink) |
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6GB Kingston 2000CAS8 KHX2000C8D3T1K3/6GX scaling tests, when I reduced the Uncore frequency multiplier from 24x to 23x - I reduced the Uncore frequency from 4128Mhz to 4071Mhz. I knew I'd get a potentially higher max memory clock at 8-8-8-24 1T timings, but was surprised by how much extra. I managed to jump from DDR3-2064Mhz to DDR3-2124Mhz at the same voltages of 1.45v CPU VTT and 1.66v VDIMM all thanks to Core i7 980X's lower minimum Uncore to Memory ratio requirements! 6GB Kingston 2000CAS8 KHX2000C8D3T1K3/6GX @DDR3-2124Mhz 8-8-8-24 1T at 1.66v
![]() 6GB Kingston 2000CAS8 KHX2000C8D3T1K3/6GX @DDR3-2230Mhz 8-8-8-24 1T at 1.66v Managing to use TurboV to push bclk incrementally until I reached DDR3-2230Mhz 8-8-8-24 1T at 1.45v CPU VTT and 1.66v VDIMM !
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| | #39 (permalink) |
| Senior Member Join Date: May 27 2010
Posts: 170
| By eva2000 Thanks eva2000, I am glad I joined this forum. I will take a look at that link to better my understanding of uncore to mem ratios. Also thanks for your replies and GenAn also.
I have been following this thread along with several others on this forum and have gathered sufficient information regarding the Elpida Hyper ICs. Basically if I see a manufacturer selling 2000MHz memory rated at CL8 or lower, I 99% expect them to be using Hypers. That brings me to your suggestions Eva2000 about the Patriot and Super Talent modules. You are right about the Kingston 2000C8, it is EOL and hard to find. There is an Australian seller who has a few kits on ebay, but he's asking nearly $300 USD for them. This actually isn't a bad price, and seeing how they have worked beautifully for you was making me lean towards buying those. But I assume there is no real difference between brands correct? As long as they are Hyper MGH-Es I should be good yes? And about whether or not the Super Talents have MGH-E or not is also something I need to know and would like to share with everyone. I wish someone can give a definitive answer because actually I see there are several Super Talent 2000MHz 8-8-8-24 kits on sale for $221 or so on ebay. If Super Talents use MGH-E then this is a steal for this kit! And for all those people looking to find some hypers may be in luck. It's one of those sellers that has multiple account names but is actually the same person or business. I'm ready to order some any minute. Also Eva2000, weren't you running that 2000C8 at 7-7-7-21 at around 2200MHz? But was that at a higher voltage, and the results your most recently posted are for a lower VDIMM? Just curious but regardless congrats with the success |
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| | #40 (permalink) |
| Senior Member Join Date: May 27 2010
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Also I contacted Mushkin and although they can't disclose information regarding their memory ICs he basically confirmed their 998750 2000MHz 8-8-7-24 kits are MGH-Es. So I just need to know if the ICs are the only thing that matters then I will search for the cheapest kit using MGH-E. Of course though customer support always matters too. |
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