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Dominator 2000 MHz not running it at 1.65v?

Poll Results: What would you say about this?

This is a multiple choice poll
  • 50% of voters (2)
    They should run at 2000@1.65v
  • 0% of voters (0)
    The memory might have suffered ESD damage.
  • 0% of voters (0)
    It's not common that memory do those specs at 1.65v
  • 25% of voters (1)
    That kind of packaging of memory has little to say.
  • 25% of voters (1)
    Misc other.
4 Total Votes  
post #1 of 7
Thread Starter 
I was wondering, I have some Corsair dominator 2000 MHz ram with timing 8-9-8-24. I'm not familiar with high end ram, but the memory is rated to 1.65v, is it supposed to be able to run 2000 MHz at 1.65v?

This is part of used components I have acquired, but only 2 of the 3x 2gb sticks were in it's original packaging, the last one was in ordinary plastic that used to hold one of the sata cables that came with the motherboard.

Might the stick gotten damaged from this choice of transport? This was sent by mail.
post #2 of 7
It is supposed to be able to run the rated speed & timings at the rated voltage, although with 2000Mhz memory it does depend on the IMC of your cpu, not all 920/930/950s have a strong enough IMC to do it 24/7 (seen 920s before that need up to 1.6V VTT to run 2k memory). You will likely need at least 1.4V - 1.5V VTT to do it.

Although ESD can do damage I've never actually seen it, possible but not likely.
    
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post #3 of 7
Thread Starter 
Hmm, I haven't been fooling around with that computer much, when I got it up and running.

I didn't even get it to post non oc'ed cpu, memory 2000@1.65v at all

I should have written down the settings the previous owner had, i7 920 2.67@4.2, but that was on his watercooling, at present I have a air cooler on it, so I quickly set it to standard settings because of the very high vcore it had. The vcore was alot higher than my 920@4.2, I think it was above 1.36.

I should have seen if the memory were at 2000@1.65 frown.gif

I'm only waiting for the cpu waterblock to arrive before I get it on wc again.
post #4 of 7
Thread Starter 
I have tried to get the computer to post with Qpi/Vtt up to 1.45v

The xmp profile says 1.25v, but that is just silly?

I guess it will help alot when I get the cpu watercooled to get it stable?

I feel like wet cardboard now, so dizzy and ill frown.gif

Edit : Voltage 1.35 to 1.45
Edited by NorxMAL - 10/17/11 at 1:03pm
post #5 of 7
I have a pretty good 920 (4.2ghz w/HT at 1.216V load), & need 1.44V VTT for 2000Mhz memory (4000mhz uncore), more than that is pretty common. If it does need too much VTT for daily use you are probably better off running 1866Mhz with tighter timings.
I usually run lower daily & just crank up the memory for short runs benchmarking.
    
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post #6 of 7
Quote:
Originally Posted by FtW 420;15344925 
I have a pretty good 920 (4.2ghz w/HT at 1.216V load), & need 1.44V VTT for 2000Mhz memory (4000mhz uncore), more than that is pretty common. If it does need too much VTT for daily use you are probably better off running 1866Mhz with tighter timings.
I usually run lower daily & just crank up the memory for short runs benchmarking.

This man speaks the truth! The IMC on your chip is the great limiter. To run 2000MHz on the memory, you have to run 4000MHz Uncore (IMC) which usually takes from 1.4V (for a very good chip) all the way up to around 1.6V for a badish chip.

It is generally recommended to keep VTT below 1.35V, but Nehalem can handle much more without a sweat. Most XMP profiles default to 1.55V-1.65V VTT.

I'd say try 1.5V QPI/VTT and if that doesn't work, try lower speeds with tighter timings.
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Bench Stuffs
(32 items)
 
ITX Daily Driver
(11 items)
 
For Sale: 6GHz+ 980X
$225 (USD) or best offer
CPUCPUCPUCPU
Intel Core i7 920 Intel Xeon W3520 Intel Core i7 4770K Intel Core 2 Duo E8500 
CPUCPUCPUCPU
Intel Pentium G3258 Intel QX9650 AMD FX 4300 Intel E2140 
CPUMotherboardGraphicsGraphics
E4300 Asus Rampage Extreme / P5E3 Deluxe / Gigabyte X... MSI GTX 275 Lightning MSI HD 7970 Lightning 
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Asus GTX 285 Matrix Platinum MSI HD 5870 Lightning EVGA GTX 980 TI Classified K|ngp|n Edition MSI GTX 580 Lightning 
RAMRAMRAMRAM
Corsair Dominator Platinum 2666 10-12-12 Samsung Corsair Dominator GT 2000 7-8-7 Hypers Kingston HyperX 2000 9-9-9 BBSE G.Skill Trident 2000 9-9-9 PSC 
Hard DriveHard DriveHard DriveCooling
Kingston SSD Now! 128GB Patriot Torqx 2 32GB Seagate 80GB XPSC Rasa + EK VGA + HWLabs Black Ice GTX 360 +... 
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W7 Pro x64 SP1 Windows XP x86 SP3 W8.1 Ducky Shine 3, Cherry Brown Switches 
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post #7 of 7
Thread Starter 
I'm waiting to get the cpu watercooled, so I don't need to do this twice.

Mostly because I feel so under the weather now, that my bum is raised above my head (did that make sense? upsidedwnsmiley.gif)

This rig is going to become a pure folding rig, I'm trying to mod it really nice as well, since it's gonna contain something special that calls for it smile.gif
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