I know what is wrong with my system and my story lol..

I think he is trying to get 4.0Ghz as per the pre-overclocked bundle he said he bought.

What I don't understand is if you bought a bundle and it doesn't work, why don't you phone OCUK and ask them why its failing?
There is even a full thread on this in the sales forum section.
 
have same problems as such cpu oced to 4.2 but ram will on be stable @ 1200 as soon as i move it up to the 1600 it failes all the time, but TBH 1200 to 1600 is not much diff
 
1200mhz DDR and 1600mhz are there any noticeable performace differences in realtime applications between the two... e.g. games or is it only visiable under benchmarks?


No real-world difference at all. Since Core2 came out, all succeeding rigs - AMD as well as Intel - are essentially limited by the CPU absolute speed, in all but a few benchmarks.

But I am a little surprised by your RAM troubles - my XMS3 will do 1800 at 9-9-9-27 2N, at 1.64V


M
 
Hmmm its gotta be some other voltage like a memory controller or something thats not right thats causing this. Ima test later if 4.2Ghz 1.23v and 1200mhz ram is stable.
 
I think he is trying to get 4.0Ghz as per the pre-overclocked bundle he said he bought.

What I don't understand is if you bought a bundle and it doesn't work, why don't you phone OCUK and ask them why its failing?
There is even a full thread on this in the sales forum section.

Quite right!!
 
For some reason my board wont even post with the ram at 1200mhz. Anyone else have this problem?

This is it failing @ 4.2Ghz like it always does :(

42Ghsfail.jpg
 
Got my D0 this morning, now running at 4ghz, But I cant get the ram to run at 1600mhz on this either.

I am sure its a voltage issue somewhere in the QPI/Vtt and Dram section. It wont even post with the ram at 1600.

1200 NP's at all, passes Intel Burn Test 16 threads 5 times max temp 55 degrees.
 
Dr.Who What ram you running

mine is same cant get stable at 1600 at all.
1200 is a breeze
 
thats 3 of us now....

who have ram issues no matter what i tried and i tried MOST things i just cannot get my ram to run at 1600mhz stable on the 4ghz cpu clock its it impossible ive even loosened the ram timings etc... the only other way i can think of is increasing ram voltage QPI/VVT voltage to very high amounts but am afraid of burning them out...

[edit] prt im running the same ram as you OCZ gold 1600mhz

[edit 2] can we be unlucky enough of having faulty ram sticks but they seem to pass in Memtest i just ran 19 passes no faults at 1600mhz its only in windows the system becomes unstable fails Intel burn test BSOD and sometimes doesnt post??????? 1200mhz on ram and the system is solid as a rock
 
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who have ram issues no matter what i tried and i tried MOST things i just cannot get my ram to run at 1600mhz stable on the 4ghz cpu clock its it impossible ive even loosened the ram timings etc... the only other way i can think of is increasing ram voltage QPI/VVT voltage to very high amounts but am afraid of burning them out...

[edit] prt im running the same ram as you OCZ gold 1600mhz

[edit 2] can we be unlucky enough of having faulty ram sticks but they seem to pass in Memtest i just ran 19 passes no faults at 1600mhz its only in windows the system becomes unstable fails Intel burn test BSOD and sometimes doesnt post??????? 1200mhz on ram and the system is solid as a rock



lol yeah, I am happy for now to leave it @ 1200, might buy some diff Ram next year or when ever i got some spare cash. but hey happy at 4.2 as it is
 
I think he is trying to get 4.0Ghz as per the pre-overclocked bundle he said he bought.

What I don't understand is if you bought a bundle and it doesn't work, why don't you phone OCUK and ask them why its failing?
There is even a full thread on this in the sales forum section.

i know i can go to OCUK about the problem im having but i like to troubleshoot all possiable scenarios before sending it back...
 
overclock4200.jpg



Just run a stable burn test on mine, can't get the ram at 1600mhz with this d0 stepping cpu, even tho it was fine on my old cpu.

I doubt there is an issue with your gear, but worth speaking to OCUK tech support to see what they advise.
 
Thx for posting that as it helped me get 4.2ghz stable with ram at 1600mhz. My board wont even boot at 1200mhz which is weird. Your ICH I/O seems really high as stock its only 1.1v but you have it at nearly 1.6v. Im stable with only 1.2v on the ICH I/O. Will post my full bios settings in abit incase it helps anyone get your ram to 1600mhz.


42Ghzstable.jpg
 
K hope this helps some peeps :)

4.2Ghz 920 D0 LinX stable 1600Mhz.

Code:
CPU Clock Ratio [20x]

Advanced CPU Features [Press Enter]:
CPU Clock Ratio [20x]
Intel(R) Turbo Boost Tech [Enabled]
CPU Cores Enabled [All]
CPU Multi Threading [Enabled]
CPU Enhanced Halt (C1E) [Enabled]
C3/C6/C7 State Support [Disabled]
CPU Thermal Monitor [Enabled]
CPU EIST Function [Enabled]
Virtualization Technology [Disabled]
Bi-Directional PROCHOT [Disabled]

Uncore & QPI Features [Press Enter]:
QPI Link Speed [x36]
Uncore Frequency [x19]
Isonchronous Frequency [Enabled]

Advanced Clock Control [Press Enter]:
standard clock control
Base Clock (BCLK) Control [Enabled]
BCLK Frequency (MHz) [200]
PCI Express Frequency (MHz) [AUTO]
C.I.A.2 [Disabled]

advanced clock control
CPU Clock Drive [ 800mV]
PCI Express Clock Drive [ 900mV]
CPU Clock Skew [ 100ps]
IOH Clock Skew [ 0ps]

Performance Enhance [Turbo]
Extreme Memory Profile (X.M.P.) [Disabled]
System Memory Multiplier (SPD) [x8]
DRAM Timing Selectable (sPD) [Manual]

Channel A

CAS Latency Time 8 [9]
tRCD 8 [9]
tRP 8 [9]
tRAS 20 [24]

Channel B

CAS Latency Time 8 [9]
tRCD 8 [9]
tRP 8 [9]
tRAS 20 [24]

Channel C

CAS Latency Time 8 [9]
tRCD 8 [9]
tRP 8 [9]
tRAS 20 [24]


Advanced Voltage Control [Press Enter]:
Load Line Calibration [Enabled]  
CPU Vcore 1.15v [1.28750v]
QPI/VTT Voltage 1.150v [1.320v]   
CPU PLL 1.800v [1.840v]

MCH

PCIE 1.500v [1.540v]
QPI PLL 1.100v [1.140v]
IOH Core 1.100v [1.200v]
ICH I/O 1.500v [AUTO]
ICH Core 1.1v [1.200v]

DRAM

DRAM Voltage 1.500v [1.660v]
DRAM Termination 0.750v [AUTO]
Ch-A Data VRef. 0.750v [AUTO]
Ch-B Data VRef. 0.750v [AUTO]
Ch-C Data VRef. 0.750v [AUTO]
Ch-A Address VRef. 0.750v [AUTO]
Ch-B Address VRef. 0.750v [AUTO]
Ch-C Address VRef. 0.750v [AUTO]
 
From it failing to it passing i changed these from auto to voltage mentioned above. Now im not sure If it was ICH Core that i changed or ICH I/O....

PCIE voltage
ICH core

Obs its going to be alittle different CPU wise but the mobo voltages shouldn't be far off.
 
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