Ok folks, I've been mulling this over for a while now and can't seem to find a clear answer...
The basic question is thus: Do I need a 650w PSU or 750 for a basic overclocked i5 750 / 5850 crossfire rig.
Rig:
ASUS P7P55D-E Pro LGA 1156 Intel P55 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Intel Core i5-750 Lynnfield 2.66GHz LGA 1156 95W Quad-Core Processor BX80605I5750
2x HIS H585FN1GD Radeon HD 5850 (Cypress Pro) 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card w/ Eyefinity
G.SKILL ECO Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7D-4GBECO
Spinpoint F3 HD, Antec 900 case, dvd-RW, usb mouse/keyboard, blah blah blah
I'd like to overclock the i5 to around 3.5-3.6 ghz or so and overclock the 5850's as much as I can with the CCC (Not a whole lot, really)
So there it is, different PSU calculators have given me different answers. Seems like some say a good 650 will be fine, others warn I'm cutting it too close and need a 750. What say you forum?
Thanks for any input =)
The basic question is thus: Do I need a 650w PSU or 750 for a basic overclocked i5 750 / 5850 crossfire rig.
Rig:
ASUS P7P55D-E Pro LGA 1156 Intel P55 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Intel Core i5-750 Lynnfield 2.66GHz LGA 1156 95W Quad-Core Processor BX80605I5750
2x HIS H585FN1GD Radeon HD 5850 (Cypress Pro) 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card w/ Eyefinity
G.SKILL ECO Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7D-4GBECO
Spinpoint F3 HD, Antec 900 case, dvd-RW, usb mouse/keyboard, blah blah blah
I'd like to overclock the i5 to around 3.5-3.6 ghz or so and overclock the 5850's as much as I can with the CCC (Not a whole lot, really)
So there it is, different PSU calculators have given me different answers. Seems like some say a good 650 will be fine, others warn I'm cutting it too close and need a 750. What say you forum?
Thanks for any input =)