I recently built 2 machines both with Intel DP55WB Motherboard, Core i5 750, Corsair 1333 4GB (2GBx2), Win7. One computer has a 405w Enermax PSU, the other has a 750w Corsair PSU. Both are running Win7 64 bit.
With Intel Speedstep / C1 State / Turbo Mode enabled, they can run prime95 stable for 24+ hours, but they BSOD when idle. If I disable Speedstep / C1 State / Turbo Mode, the machines are rock solid stable at load or idle. Has anyone else encountered this issue with crashing when idle?
I believe I'm having the same problem. My system is fine as long as I'm running the distributed.net client, but once I kill it, things start getting flaky. I disabled the settings you suggested, and my computer has been fine so far. I'll know more when I wake up tomorrow morning...
I've run into a similar issue, I have 2 machines running a i5 CPU on a DP55WB motherboard, both machines either reboot (Without bsod) or just freezes. Have not tried disabling speedstep as yet, as I want turbo mode. Most of these reboot and/or freezes occur while browsing etc.
Does intel have an answer for us on this? Is this motherboard related or cpu? If motherboard I'm considering a swop...
I've googled quite a bit of stuff on this problem, and I've found that at least Gigabyte boards have the same issue. I haven't heard back from intel on the issue I reported yet. Bleeding edge technology is always the same. At least I'm stable with EIST off...
What type of memory are you using? I'm using 1333 9-9-9-24 1.5v Corsair. I've found that I can switch EIST on and turn the memory voltage up to 1.6v and its slightly more stable. No BSODs, but World of Warcraft will crash after about 30 mins of use. Switch EIST off, memory back to 1.5v, everything is rock solid for days on end.
I disabled speedstep in the bios, so far so good haven't rebooted since on both load and idle. I have 2x 2GB Transcend (TS256MLK64V3U) DDR3 modules. Have done multiple memory tests no errors found.
On another note, what is the general PSU requirement for an i5 with a nvidia graphics card? Should a 585W suffice?
Power requirements are largely inflated for the masses that buy low quality power supplies. I ran a Core2Duo E8400 (3ghz), 4 GB Ram, GTX260 with a 400w power supply. That computer was by far the most stable PC I've ever owned.
That being said, 585w should be more than adequate even with a bad brand. Watts matter, and amount of amps on the rails matter. I prefer Enermax and Corsair power supplies, they've been very good to me and never undervolt.