...but runs fine with a single stick of RAM or with the ram sticks in different channel slots (not running dual channel).
Phenom II 965
2x Corsair 2gb CMX4GX3M2A1600C9
Stock CPU cooler and pre-applied paste
Palit GeForce GTX 460 1gb
WD 640GB 6 gb/s SATA
Windows 7 64
Antec 300 (two fans)
This is my first build.
I had issues almost immediately and quickly learned about the trouble the Phenom IIs have with dual-channel memory at 1333. Random crashes, BSOD, etc.
I underclocked to 1066 and left voltage and everything else on auto.
This helped stability, but it would still crash at almost the same point every time when running in dual channel mode and running prime 95 RAM stress test.
I experimented with the timing settings, mainly trying higher settings or copying settings from various internet posts, which didn't seem to have much effect, if any.
I experimented, still at 1066, with upping the voltage to as high as 1.58, with different timing settings (varying from 8 8 8 24 to 7 8 8 19) which seemed to improve stability a little, as it would get just a little further into the prime95 test before seeing an error message saying something like 'rounding error .05 expected less than .04' and then rebooting, freezing, or BSODing.
Finally, with frustration mounting, I read a post where a guy set his memory clock back to 1333, everything else to auto, and moved one stick of RAM to a different slot in order to disable dual channel mode.
In this configuration, my system seems totally stable.
Here are my questions:
Anybody know why can't I run in dual channel mode, even with the memory downclocked to 1066 and the timing settings at auto (or manually at 8 8 8 24), but non dual channel works fine?
Is this a known issue and I simply haven't searched well enough?
The RAM *seems* to be fine- could I have a bad MB?
I realize now this is Intel ram, could this cause a problem like this?
How much performance am I losing without dual channel?