The only other option than a faulty drive, would be the drives running a different BIOS.

Samsung made a BIOS update for the F4, without modifying version number !

If all of your 6 drives are F4's, and you have tried moving things around, it seems very likely it's the drive ? Anyway, I had two Samsung F4's (idle 99% of the time) connected to an Asus socket 775 motherboard, and when they spun down or I put my computer to sleep, they would not always spin up aga...

Thanks, I actually thought the question was simple enough: Would you buy a 650g cooler with or without a backplate ? but maybe it wasn't clear with the other information I put in. I don't know if it can run 'fanless', but the rear case fan is only 1-2cm away, and the CPU is really not being stressed...

I need a cooler for a 4570. It's a non-K, so no overclocking and mostly for development, so no long CPU-intensive tasks. My plan is to not use a fan on the cooler, but only use the rear case fan (this is how I run my current E6750). I have considered the True Spirit 120, but with the new revision pr...