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Dominator GT's

post #1 of 13
Thread Starter 
Hey guys

I'm currently looking at what memory to use in my new rig. It will be an i5-2500k or an i7-2600k on an Asus Maximus IV Extreme or an Asus P8P67 Deluxe.

I had been looking at 8 gigs of Corsair Dominator at DDR3-1600 MHz at first, but I just now noticed I could also get some Dominator GT's at 1866, 2000 or 2133 MHz.

Is it easy/possible to get these kits to actually run at these speeds? If so, which ones would you suggest? Both motherboards officially support up to 1600 MHz, but that doesn't specifically mean much to me as I'm new to overclocking RAM.

Before anyone suggests it, G.Skill or any other special manufacturer is a definite NO. I just can't get them out here, so I'm limited to Corsair as far as memory goes.


Thanks in advance!
post #2 of 13
I don't know much about SB but I know for my i7 930 I had issues running 6 gb Dominator GT 2000 mhz cause it needed 1.55v QPI which isn't very safe so I returned them. I wanted to try again and got 12 gb 2000 mhz Dominator GT 3 x 4 gb and got them running with 1.42 QPI which is still kinda high but maybe SB has a better memory controller. Wish I could help more
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Xeon TJ07
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post #3 of 13
Thread Starter 
Quote:
Originally Posted by Eebobb View Post
I don't know much about SB but I know for my i7 930 I had issues running 6 gb Dominator GT 2000 mhz cause it needed 1.55v QPI which isn't very safe so I returned them. I wanted to try again and got 12 gb 2000 mhz Dominator GT 3 x 4 gb and got them running with 1.42 QPI which is still kinda high but maybe SB has a better memory controller. Wish I could help more
I don't know either =/.

What I'm thinking is, if they're selling RAM at these speeds, there has to be a way to get it to work, right? XD.
post #4 of 13
Yea but sometimes it's harder to get them to run depending on the speed and usually the higher speed you get the harder it might be to run it. Like the old ram I had I had to use 1.55 volts for the QPI to get it to run which isn't safe to do so everyone's setup is different so another computer might run that ram better or even worse.

Also 1 more thing is you won't really notice faster ram speeds in regular day to day usage but you will see an increase in benchmarks if that means anything to you.
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Xeon TJ07
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post #5 of 13
I know the Maximus IV Extreme doesn't support 2000MHz, either 1866 or 2133...
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post #6 of 13
Thread Starter 
Quote:
Originally Posted by Iris View Post
I know the Maximus IV Extreme doesn't support 2000MHz, either 1866 or 2133...
That's odd, why not? :s
post #7 of 13
well I guess I'll be running my new dom GT 2000mhz at 1866 or OC to 2133
post #8 of 13
I have the same question. I am looking for some reviews about CMT8GX3M2A2000C9 on SB platform.
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post #9 of 13
i don't think many people actually run their rams at 2000, let alone 2133, i doubt many people even run theirs at over 1866.

for manufactures, the high frequency is more or less for marketing purpose, i believe they know fair well that even a 2000 rated ram will probs end up running at 1600 for a 24/7 use.

as for buyers, the high frequency (1866+) is good for overclocking the cpu, as sometimes your cpu overclock leaves you with ram speed in the 1700s, so instead of going back down to 1500s with a 1600 rated ram, you can actually leave it at 1700b speed, and yet you can still lower the timings more as the frequency hasn't reached spec speeds.

of course this doesn't really apply for sandy bridge systems, as overclocking sandy doesn't involve altering base frequency. i don't own a sandy system, but i believe most sandy boards still only support native 1600 speeds, and i'm not sure how well you can overclock rams on them. either way, with a high frequency headroom you can still have the option to lower timings by quite a bit if overclocking the board doesn't work out all that well.
post #10 of 13
I'm not normally concerned with just the speeds... I care about the combination of speed/timings which is really just saying I care about the IC's.

I have a set of 2000 8-8-8 GTs and a set of 1600 7-7-7 GTs. Both sets have Elpida MGH-E Hypers and will do 1600 6-6-6 at 1.6V and 2000 7-7-7 at 1.68V.

On my first 970 which had a fairly weak IMC, I ran them at 1600 6-6-6. Now that I have a stronger chip, I run them at 2000 7-7-7.
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