when you oc, the QPI has actually not at the default value already..

QPI, DRAM, and uncore is all base on bclk..this is well understood already..
as i stated earlier, for example the default bckl for i7 920 is 133 and default QPI multi 18..so there goes the QPI link/rate of 4.8GT/s..you can derived this this multiply the 133x18x2=4788Mhz (almost 4800mhz as intel rate for it's i7 920 QPI link)..if you look the QPI link via CPU tweaker, it will disregard the x2 factor, so, 2394 will be shown..

at this moment, you default dram speed is 1066, and thus uncore will be 2132..there goes the the ratio of 8:9 (uncore:QPI)..

when oc, if you set your bclk to 200, (for instance to get cpu speed of 4.00g's) the QPI speed will be 200x18(slow mode)x2=7200mhz..at this time your QPI speed is 3600..if you let your dram speed on default at this point, the ratio is not 8:9 right..??..

that's why uncore and dram need to be increase too when oc..

@monsh

if your uncore is @4k, you might try the normal mode which will bring you 44xxmhz QPI speed...however, this will not guarantee stabilty since you are already goes against the default speed..but, give it try since it still in the ratio of 8:9..

you will see some different in the memory read and write if you do some bench's on it...

i'll give a link on a review between QPI and uncore relatedness later, got some chores right now...huhu..

this is one of the review showing the relation between QPI and uncore

http://www.overclock.net/9989114-post219.html

i think is better for you to understand the basic requirement first..

http://www.clunk.org.uk/forums/overclockin...-beginners.html

u must be familiar with this 4 item first, BCLK, Uncore, DRAM and QPI..

if you wanna stress out to the max, you can try run p95 together with linx..

sell your hardware and get a sandy... ..

i iz jelly with sandy now..1366 is becoming history already..

increasing the cpu/vtt is well said giving stablity to reach higher uncore..

mine 34xx uncore is @1.32v cpu/vtt...

mine 4.2g's is at 1.3875v.. ..any takers..running 24/7..

what can expect from C0 stepping proc.. .. you guys so lucky one..

I decided to get a 2 kit 2133mhz ripjawss...ekeke..

not yet dude.. ...i only decided to get that rams soon...

gskill ripjawsX in action on x58..running in tripple channel memory mode...

achieve 4k uncore with only 1.28cpu/vtt.. ..

however, this is on XMP profile, i just got it from the shop..it doesn't guarantee stability, will perform some test later..

but, to achieve this uncore clock with auto QPI/v is superb man..

i think my turboV doesn't show the real voltage at that time..

i reached 2k dram speed with 4k uncore with 1.50cpu/vtt.. ..it's either my proc imc is not good enough or the rams is not compatible with the x58 platform..

however, i'm gonna try and run on 2 stick make it running on dual channel mode...

harammmm...itu la xmp la monsh...btw, C0 proc cam haram dow..huhu..i'm not dat lucky meh...

btw, skang running 1866mhz with 3732uncore with 1.4275 cpu/vtt, 7-8-7-20..

Rasnyee..someone in xs uses the same proc as mine, and set his cpu/vtt up too 1.55v to get 4k uncore...

He uses 2kc7 dom gt...huhu...

http://www.xtremesystems.org/forums/showth...-20-1.65V-*HOT*



This post has been edited by kaka_89: Aug 27 2011, 05:27 AM

GSkill RipJawsX

F3-17000CL9D-4GBXL... x2
(2 x 2GB) @ DDR3-2133 9-11-8-28
1.6V


LinX, DDR3-1600 7-8-7-20/82-1T, HT disabled (8 threads), 200MHz BCLK x 21, Uncore= 3483Mhz


Everest Ultimate, DDR3-1600 7-8-7-20/82-1T, HT disabled (8 threads), 200MHz BCLK x 21


Test 2

LinX, DDR3-2005 9-10-9-28/88-2T, HT disabled (8 threads), 200MHz BCLK x 21, Uncore= 4009Mhz


Everest, DDR3-2005 9-10-9-28/88-2T, HT disabled (8 threads), 200MHz BCLK x 21, Uncore= 4009Mhz




This post has been edited by kaka_89: Aug 27 2011, 10:42 PM

r3e..??..

wat ver u used..?