G1Sniper2 Boot error with Mushkin 2133mhz memory (997015)

[G1Sniper2]

Hi !
I'm having trouble getting my mushkin memory boot at 2133mhz.

Specs:
CPU 2600K
Motherboard Gigabyte G1Sniper2 @ bios F3/F4
Ram Mushkin 997015 2133/1.5V
PSU Corsair 850w
VGA Nvidia 570
Cooling EK Waterblock with 3x12cm+1x14cm radiator

I've tried several setting, incresing ram voltage (up to 1.65) QPI/VTT(up to 1,2) system Agent(Up to 1,15).
Loosenig Ram timings, Disable all powersaving features, running CPU at stock speed..
But when I set it to XMP or 2133 Mhz and hit "save and exit" it will reboot, Startup, then reboot again after 0,5 seconds and dispay a boot error/overclocking failed) message.

The ram is 100 % stable at 1866mhz.

Current stable settings
LoadLine Callibration Level 6
CPU Voltage 1,39
multi 48x
Powersettings disable
ram Volt 1,53
timings 1866 9-10-9-27
cpu temp (40c idle) (70c prime)

Have someone here managed to get this board to run dual 4gb modules of ram @ 2133??
Any suggestions??

[Dark Mantis]

I suspect that the memory modules are not stable at 2133mhz. Try running one at a time and see if either works at that speed.

[Aussie Allan]

  Good advice from DM there as your in an area that not many have traveled as yet......another direction you can look into is here..........

  http://softnology.biz/tips_xmpenhancer.html  ....this may give you the fine tuning you may need to get the very best out of the memory you have.

  If it's rock solid at 1866........start there and treat it like an over-clock and move it steadily north with tweaks along the way......another really good tutorial to glean a few bits from would be here.......

            http://www.overclock.net/t/538439/guide-to-overclocking-the-core-i7-920-or-930-to-4-0ghz

  There's some real good reading here that will scale to other platforms but the memory clocking section is excellent......Enjoy

  Aussie Allan

[G1Sniper2]

I suspect that the memory modules are not stable at 2133mhz. Try running one at a time and see if either works at that speed.

Booth modules will run when only one is inserted.
But neither of them will even try run in DDR3_1 or DDR3_3 slots.
So I have no option for dual channel..

So...
Is the mainboard broken then? or could this be a bios thing?

[Aussie Allan]

  More information is always handy.....that memory is rated at ........2133MHz RAM Speed, CAS 10-11-10-28 Timings, 1.5v VDIMM,

 First establish that the memory will in fact run at this setting individually....this will establish that the memory is in manufactures spec.

  then read the links I sent you earlier....these will help you get your head around the task in front of you.....also.....here's a snip in bold-In from another one I'll send you ....

     order to take advantage of DDR3’s higher memory speed, benchmarking enthusiasts often had to use DDR3-1866/2000 kits that required voltages in the 1.8V~2.0V range to reach these clock speeds. 

  and the link....http://www.anandtech.com/show/2792

  I have 24Gig of memory in my machine and had to be willing to throw a little caution to the wind to get it working at any speed.....1.5V rated memory will comfortably run at 1.77V but keep an eye on temp and never exceed the rule of 0.5V between QPI/VTT and the memory voltage. Because the memory controller is now on the CPU....damage can result if this tolerance is exceeded.

  Aussie Allan

[G1Sniper2]

  More information is always handy.....that memory is rated at ........2133MHz RAM Speed, CAS 10-11-10-28 Timings, 1.5v VDIMM,

 First establish that the memory will in fact run at this setting individually....this will establish that the memory is in manufactures spec.

  then read the links I sent you earlier....these will help you get your head around the task in front of you.....also.....here's a snip in bold-In from another one I'll send you ....

     order to take advantage of DDR3’s higher memory speed, benchmarking enthusiasts often had to use DDR3-1866/2000 kits that required voltages in the 1.8V~2.0V range to reach these clock speeds. 

  and the link....http://www.anandtech.com/show/2792

  I have 24Gig of memory in my machine and had to be willing to throw a little caution to the wind to get it working at any speed.....1.5V rated memory will comfortably run at 1.77V but keep an eye on temp and never exceed the rule of 0.5V between QPI/VTT and the memory voltage. Because the memory controller is now on the CPU....damage can result if this tolerance is exceeded.

  Aussie Allan

Thanks for links:)

I have now done some testing and they are both individually 100% stable at 2133 (Single channel) when placed in either DDR3_2 or DDR3_4 slot, but it wont even try to start when putting another chip in either DDR3_1 or DDR3_3.
I tried putting voltages up to 1.7V for memory(from 1.5V) and (1,2V) for the QPI/Vtt, but still it will power off after 0,5 sec and show "boot error/overclocking" failed message.. Its not a question about getting it stable at 2133(dual channel), it simply wont try to boot..

[Aussie Allan]

  Sometimes it's a hard call......I'm starting to think the obvious and thats compatibility ... unless you can get your hands on some other memory kit to check the integrity of the board ?.....ideally some thing out of the memory support list.

  one course is to go back to the point of purchase and explain your problem.....at the end of the day the memory they sold you should run in your system but it Don't....they might have a set you can try in your system to check compatibility......if the new set runs......there committed to except the return and bash out a new deal with you and what you want!

  tough call how to move forward.......to be brutally honest.....unless you bench ....the difference between 1866 and 2100 ....you can't pick it

  Aussie Allan

[Dark Mantis]

I agree with Allan and although it is annoying to buy something that is supposed to work at a certain spec the reallity of it is that you would actually get a better response from the RAM by tightening the timings than you would by raising the speed.It is all down to data througput in the end and slower tighter RAM will push more through than fast but loose memory.