garrettheath4

I didn't say I wasn't willing to get a new PSU. I just wouldn't want to buy a new PSU if the one I have now would work just fine. I should buy a new PSU because I need a new one, not just because the one I already have is "old". BUT based on the replies to this thread (thanks everyone!) and based on advice from one of my friends, I think I am going to get a new PSU.

I want to add a second graphics card to my gaming rig (2 gamers, 1 CPU!). My Corsair HX650 PSU has two 8-pin PCI-E ports on it, but the first graphics card that I have (EVGA GeForce GTX 670) has two 6-pin ports and the second graphics card that I want (ASUS GeForce GTX 1080) has one 6-pin port. Is it safe to split one of my 8-pin PCI-E ports on my PSU into two 6-pin plugs for the first graphics card and directly use the second 8-pin port on my PSU for the 8-pin port on the second graphics card? Current Specs: PSU: Corsair HX650 (650 W) [has two 8-pin PCI-E ports] Motherboard: Asus P8Z77-V LK CPU: Intel Core i7-3770k @ 3.50 GHz Total Memory: 16.0 GB (DDR3 1600 MHz) Hard drives: Four identical Seagate 1TB BarraCuda SATA 6Gb/s 64MB Cache 3.5-Inch Internal Hard Drives (ST1000DM010) SSD: Samsung SSD 840 PRO (60GB) Case: Corsair Carbide Series 500R Current graphics card: EVGA GeForce GTX 670 [needs two 6-pin PCI-E plugs] Additional graphics card I want to also use: ASUS GeForce GTX 1080 [needs one 8-pin PCI-E plug]