i was wondering if i could get some input regarding a strange issue with new i5 build. the problem is when in windows 7 desktop the graphics seem to intermittently become jittery (for lack of a better way to describe it) when the system is idle but as soon as any of the drives spin up the problem decreases and goes away. it's almost as if under load things are fine but when the power load decreases the problem returns. could this be a psu problem?
cpu - i5 2500k
mobo - gigabyte ga-z68x-ud3h-b3
ram - G.SKILL NQ Series DDR3 1600MHz (PC3-12800) 4GB (2x2GB) Dual Channel Kit (F3-12800CL9D-4GBNQ)
hdd - Western Digital Caviar Black (WD7502AAEX) 750GB SATA3 7200RPM 64MB Cache
dvd - Lite-On IHAS124-04 Internal DVD Writer - DVD+R 24X, DVD-R 24X, DVD+RW 8X, DVD-RW 6X, DVD+R DL 8X, SATA (OEM)
PSU - Corsair Builder Series CX600 V2 600 Watt 80 PLUS Certified Power Supply (CMPSU-600CXV2)
Sounds like some sort of power issue. I would try diabling the power saver feature within windows to see if it goes away , you can always set it back to default. Maybe set a custon power plan to eliminate the power saver feature.
Download Motherboard Monitor or the program that comes on the Gigabyte Z68's disk and watch your voltages. If they look alright, then I would go to all of the manufacturers sites and update all of your drivers. Give that a try.