A few question about Ivy Bridge OC...

[m4x2012]

Changed CPU (same model, same batch) but now I expect this issue:

RAM will never POST either in 2000/2133/2200/2400, juiced VDRAM @ 1,75V - VCCIO @ 1,20 - VCCSA @ 1,25, manual timings but no-go.

Even loading XMP profiles will result in FAIL.

If I set standard frequency @ 1600Mhz everything OK and pass 2 Memtest86+

RAMs are ok tested in another system at 2400Mhz

Maybe a faulty motherboard?

[HiVizMan]

RMA the motherboard you have had to much hassle and as you have swapped out CPU and tested RAM in other board you have done more than can be reasonably expected.

[m4x2012]

RMA the motherboard you have had to much hassle and as you have swapped out CPU and tested RAM in other board you have done more than can be reasonably expected.

I've only swapped RAMs, CPU has only been tested in my MG5 but I think it's strange that a 200$ pair of RAMs (also listed in Certified and QVL in both manufacters) cannot do a "basic" 2000 frequency (not extreme 2400+)

[m4x2012]

RMA'ed board, problem vanished

Now another question:

I was able to OC my CPU to 4.8 with VCC 1.42V, CPU PLL 1.40V, CPU PLL Overvoltage Auto, LLC High, CPU Phase Control Extreme and all the C-states enabled with no memory overclock (after the RMA of the mainboard, I've keeped the RAMs to stock frequencies 7-9-9-20 1T)

After the RMA, I've first tried the RAM successfully with XMP profile 1.65 VDRAM, VCCSA 1.25, 10-12-12-31 2T timings next downlocked to 1.55 VDRAM, VCCSA 1.15, 10-12-12-26 1T timings @ 2400Mhz OK on a 6+ RUN on Memtest86+

Unfortunatly, when I have restored my OC configuration with the 2400 memories setup no LinX or IBT can complete a stress test (but no BSOD's or system freezes)

How can I manage to solve the issue?

[HiVizMan]

I think that you might just have to accept that your CPU is not a strong IMC or 2400MHz processor. If you want to push for the 2400MHz then you are going to have to start adding VCCSA and a tad more VDRAM I suspect.

My data has shown that 2133MHz is the optimal frequency for performance and latency. You should be able to achieve better efficiency with your ram at 2133MHz and a tighter latency.

[m4x2012]

I think that you might just have to accept that your CPU is not a strong IMC or 2400MHz processor. If you want to push for the 2400MHz then you are going to have to start adding VCCSA and a tad more VDRAM I suspect.

My data has shown that 2133MHz is the optimal frequency for performance and latency. You should be able to achieve better efficiency with your ram at 2133MHz and a tighter latency.

Or I need to downclock my CPU right?

[HiVizMan]

That does not necessarily follow. I have some CPU's that clock ram like a lump of coal, but one clocks core frequency like a star. IMC is independent of, but located on the CPU.

However please do try that and see if it helps your CPU, and if it does do please report back as it might help others.

[m4x2012]

That does not necessarily follow. I have some CPU's that clock ram like a lump of coal, but one clocks core frequency like a star. IMC is independent of, but located on the CPU.

However please do try that and see if it helps your CPU, and if it does do please report back as it might help others.

UPDATE:

VCCIO @ 1.0625V and VCCSA @ 1.15V, I can handle 4600Mhz at 1,30V (but I think it's a bit too high, I can see chip @ 1,22/1,24 handle this frequency) without errors or WHEA.

CPU PLL @ 1,30V

I've also enabled integrated iGPU HD4000 for using Virtu MVP on Windows, do you think it can cause problems or needs of more Vcore for OC'ing?

[HiVizMan]

Enabling the iGPU will impact your overclock yes.