Possible Memory problems

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Joined
14 May 2012
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1,288
My PC has been running stable for the last couple of years with a steady over clock of 4.515ghz. With the RAM running (slightly down clocked) @ 2064 rather than 2133 @ 1.75v.

System:
4930K
Rampage IV Extreme
2 x 2133 Corsair Dominator GT kits (4x4gb) CMT16GX3M4X2133C9

However I've come across an issue in the last couple of days; I'm getting blue screens in windows and it's failing the overclock.
I've gone into the BIOS and 2 of the memory modules are showing as "Abnormal" status (D1 & D2).
I dropped the overclock, RAM went back to JDEC (1333mhz) and set everything to default and D1 / D2 came up fine but B1 and B2 were showing as "Abnormal". Putting some of the over clock back on and using XMP 2133 profile rather than custom timings and B1, B2, D1 & D2 all showed as "Abnormal" and don't show in Windows; so it's showing anything from 32GB to 16GB when it actually gets into windows (Which is about 25% of the time).

I'm concerned that it's a memory controller issue; and thus I'd need a new CPU, however there's a chance that one of the voltages isn't right or that one of the pins is loose.

I'm using the Ez Plug 2 (4 pin floppy connector) for the additional power rails to keep it stable.

I also got a error 53 on the LED display on the board, which is a Memory initialization error. Invalid memory type or incompatible memory speed.
 
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24/7 on Ivybridge 1.75 is absolutely fine providing VCCIO is not out of control high. XMP for high speed dimms is often set VCCIO at 1.25v and this has been endorsed by Intel.

If I am honest on my benching RIG which gets some hammer I dont run less than 1.85 Vdimm on Hynix , 1.9 on PSC and 2.0v + on BBSE and my cpu are fine. Always running same timings speeds etc stable... VCCIO I run upto 1.35v

Degradation has been noticed by some but they are running high VCCIO over 1.35 and high VDIMM and I think this is where the problem lies and infact it may only be the high VCCIO causing the problem.

1.75 should be fine according to 8 Pack for 24/7 usage with my setup.
I think I really need to test each DIMM and see what happens; or even just each kit individually.
 
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