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Intel 3930k with 32GB of 2400MHz Ram - Page 2

post #11 of 15
It's the integrated memory controller on the processor not being strong enough. There is a setting called gear ratio, which will increase your bus speed through a multiplier. Set the gear ratio higher and then match your processor and memory frequencies. This setting will allow your memory to run slower and lets the bus make up the difference, so that you can run your memory faster without putting more stress on the integrated memory controller. I got my G.Skill running at 2333 MHz and then just tightened the timings a little to make up for the small loss in memory frequency.
post #12 of 15
Hmmmm. Strange.

I think it could well be down to your memory controller not being up to the job.

I just looked up bios voltages, one of which is the VCSSA Voltage Control, which is responsible for the 1155/56 IMC (Memory Controller), so you could give that a tiny bump or two and see how the memory does then as it could help stabalise your ram.
    
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post #13 of 15
I've got a 3930K and even at stock speeds I couldn't stabilize my machine running my memory at stock 2400 MHz. I'm almost positive this is the issue your having. As icanhasburgers said above, increasing the IMC voltage might stabilize it. You could also try using gear ratios to make up for the lost speed as I said above.
post #14 of 15
Thread Starter 
Eh, I will just stick with 2133MHz I guess. Any suggestions on tightening the timings? 11-13-13-31
post #15 of 15
I don't know if there's a specific order in which they have to be in, but i guess you could try lower the first number as low as possible (memtest and other memory stressing programs to test for stability), when you hit a low, stable number, write it down, go back to what it was before and repeat for the second number, then third and then the 4th (31). Once you've found the lowest for each, set them to their lowest and see if it boots up together and is stable. If it's not stable, try raising one back up and see how it fairs (or voltage bump, not sure which one would be more effective. The former, in my opinion).

If anyone wants to correct me on the method and it's workings feel free wink.gif

EDIT: I remember when attempting to tighten my RAM i just wrote down the timings for the next Mhz setting down from what i had at the time (running at 1333Mhz CL9, 1066MHZ CL8 was below), so i ended up with 1333Mhz at CL8, but i think they were unstable in some conditions. Didn't notice any difference anyway.
    
CPUMotherboardGraphicsRAM
Intel i5-2500k @ 4.5Ghz (1.28 Volts) MSI P67A-G45 EVGA GTX 660 Ti 8GB DDR3 RAM (Corsair & OCZ Reaper) 
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Seagate 500GB 7,500RPM Windows 64-bit Hanns.G HI221 D-Sub Standard Microsoft Keyboard 
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True Power Quattro 850W PSU Antec 900 Gaming Case Standard USB Mouse 
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CPUMotherboardGraphicsRAM
Intel i5-2500k @ 4.5Ghz (1.28 Volts) MSI P67A-G45 EVGA GTX 660 Ti 8GB DDR3 RAM (Corsair & OCZ Reaper) 
Hard DriveOSMonitorKeyboard
Seagate 500GB 7,500RPM Windows 64-bit Hanns.G HI221 D-Sub Standard Microsoft Keyboard 
PowerCaseMouse
True Power Quattro 850W PSU Antec 900 Gaming Case Standard USB Mouse 
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