Thread: FSB+1 = Some GB of ram disappears..what?

Hi,
the topic kinda says it.

I'm currently running at 185 BCLOCK giving me 3.71 GHZ on my 920 core i7. This puts my ram at 1850 MHz approx, using 1.4125 QPI/DRAM voltage, and 1.75 DRAM voltage.

When I boot, the computer locates 12 GB of ram, but if I increase the BCLOCK to 186 or more for that matter, it suddenly only finds 8 GB of ram, and sometimes less, depending on the BCLOCK.

I've also tried increase the voltage on some of the above mentioned settings.

Another thing. if I set the management of voltages to auto, and go with 190 BCLOCK giving me 1902 MHz RAM, the hardware monitor says that my DRAM voltage is 1.9 - isn't that EXTREME?

However, going with this supposedly working (as it finds the 12 GB) isn't stable. When using prime95, some of the processes fail.
Any help?
Thanks

Exactly what kind of memory is this? Is it rated to run at these speeds?

1.9v is too high. Intel Claims that anything over 1.65v on memory for i7s runs the risk of damaging the CPU, so be wary when raising it.

Lastly, are you actually trying to overclock the memory, or just the CPU? IMO overclocking the memory past spec is pointless. If you are not trying to do this, just lower your memory multiplier.

The RAM isn't stable, so some of it simply isn't showing up. As for voltage, I'd be somewhat careful with RAM voltage - Intel has a rather strongly worded warning about running RAM over 1.65V on an i7. Try lowering the memory multiplier so you don't need to have your memory at such a high speed.