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XMP at 2000MHz, but BIOS allows 1866MHz

post #1 of 8
Thread Starter 
Hello!

Today I've installed the ASUS P8Z68-V PRO/GEN3 motherboard. I've also installed 2 sticks of DDR3-2000 Memory.
In the BIOS I chose X.M.P and it found the right frequency, timings and almost the right voltage, but the only thing that doesn't set up is the DRAM frequency. It does, but only to 1866MHz, that is on the list to choose. The next one 2133MHz. How can I make it run at 2000MHz?

Please help me out!
post #2 of 8
You can't unless you change the BCLK frequency which is considered a no no on Sandy Bridge.

Just use the 1866 strap like I do. You will notice no difference apart from in synthetic benchmarks.

You could try getting the 2133 strap to run with a voltage bump but I could not get my Dominators to run at that speed stable.
    
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post #3 of 8
Thread Starter 
Quote:
Originally Posted by loki_reborn View Post

You can't unless you change the BCLK frequency which is considered a no no on Sandy Bridge.

Just use the 1866 strap like I do. You will notice no difference apart from in synthetic benchmarks.

You could try getting the 2133 strap to run with a voltage bump but I could not get my Dominators to run at that speed stable.
Alright, thank you very much! rolleyes.gif
post #4 of 8
what you CAN do..is set it to 2133 and downclock the bclck to make your RAM 2000 ..go ahead and set the 2000 timings..and downclock..to ..i think..96.2
 
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by Schmuckley View Post

what you CAN do..is set it to 2133 and downclock the bclck to make your RAM 2000 ..go ahead and set the 2000 timings..and downclock..to ..i think..96.2

But wouldn't the CPU clock speed decrease when lowering BCLCK?
post #6 of 8
Quote:
Originally Posted by Nicolas11x12 View Post

But wouldn't the CPU clock speed decrease when lowering BCLCK?

Yes but you counter that by upping the Multiplier to reach the desired cpu speed. This cna only be done with a or Black edition CPU.
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by G.E.Nauticus View Post

Yes but you counter that by upping the Multiplier to reach the desired cpu speed. This cna only be done with a or Black edition CPU.

Thanks, I tried that. I would get to 2000MHz, but where can I raise the CPU Multiplier in my UEFI BIOS. By the way it says BCLCK/PCIE Frequency, why PCIe?
What will changing the frequency of that change for the PCIe slots?

I'm sorry, this is my first UEFI BIOS board. I'm using the Intel Core i7-2700K CPU by the way, so I can raise the multiplier.
post #8 of 8
In my readings, changing pcie freq is a no no iiirc. Here is some info on your board that should answer your question about changing multiplier.

p.s. If you change your freq settings, you will need to also adjust your HT/NB multiplier to get them back where they were i think. Not 100% on this because i dont play with Intel boards. But that the way it is with AMD boards. May need someone else to pop in here and let you know about that... :/
Edited by G.E.Nauticus - 12/28/11 at 1:30pm
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