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i7-920 and 2000mhz memory

post #1 of 19
Thread Starter 
Let's say you have an i7-920 which has an integrated memory controller and a set of 2000mhz memory. What settings need to be changed in the BIOS and to what they should be set in order for the memory to run at 2000mhz and not the lower frequencies that the i7-920 supports without overclocking?
post #2 of 19
in reality any DDR3 tri channel will work with core i7 900 series. jsut leave on auto timing's and your golden.
    
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post #3 of 19
Thread Starter 
Is it the same for the i7-2600K? Because I heard you have to overclock the memory on some processors in order for it to work at say 2000mhz. And this is not about the timings, I'm talking about the speed here.

Thanks!
post #4 of 19
Raise QPI/DramV (known as VTT or QPI/VTT on some boards). For the ram to run at 2000mhz, you will need a QPI/DramV of at least 1.50v which is much higher than spec (1.35v). Realistically, if you haven't bought the ram yet then just buy a nice set of 1600mhz ram or if you have then run the ram at 1600mhz and tighten the timings (6-7-6-18-1T is really nice). Hitting 2000mhz ram speed on a socket 1366 Core i7 (45nm) is not guaranteed and is very hit and miss.

On the Sandybridge IMC, running ram at 2000mhz is not an issue and requires very little tweaking.
Edited by ChickenInferno - 2/11/11 at 3:07pm
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post #5 of 19
Correct.


Quote:
Originally Posted by mrwalker View Post
Is it the same for the i7-2600K?
    
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post #6 of 19
Any RAM above 1066 for Bloomfield is technically overclocked according to Intel.

To run at memory at 2000MHz you need to raise the RAM multiplier and you will probably have to increase VTT/QPI voltage because the IMC in the Uncore will be stressed from the high RAM clocks.
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post #7 of 19
Quote:
Originally Posted by djk11 View Post
Any RAM above 1066 for Bloomfield is technically overclocked according to Intel.

To run at memory at 2000MHz you need to raise the RAM multiplier and you will probably have to increase VTT/QPI voltage because the IMC in the Uncore will be stressed from the high RAM clocks.
This. Exactly this.
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post #8 of 19
It's such a headache in 1336, to the point where it's not worth it. Just get a nice overclock on the CPU and set your mem close to 1600mhz.
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post #9 of 19
200mhz fsb, ram multi on 2:10 [or 10x] and you have 2000mhz on ram. IMC API/VTT prolly needs more then 1.3V [mine needs 1.33V on 2000mhz]

set cpu multi to like 14x for 2,8ghz if you dont want to o.c your cpu clock speeds.

you have to test around with voltage and timings, no way to tell in advance what you need.
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post #10 of 19
I am running corsair dominators 6gb tri 1600 ram, and when I try to push them too 2000mhz with my i7 920 D0 oc to 4.0ghz (191fsb x 21) and it fails overclock everytime. My ram is stock at 1.65v. I have tried raising it to 1.8v and it still fails. is their something particular i gotta change and or add to get it to work?

Computer specs:
Asus P6X58D-E mobo
i7 920 D0 OCed to 4ghz
6gb tri corsair dominator 1600
XFX 6870 dual fan

any help appreciated
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