Ok, just found out that though my PSU is advertised as having 2 PCI-E 6-pin connectors, one of them is actually a molex adapter to connect 2 4-pins together. This is my PSU here:
Newegg.com - XCLIO GOODPOWER 500W 500W ATX SLI Certified CrossFire Ready Active PFC Power Supply
The new graphics card I'm getting which I need the 2 PCI-E connections is this:
Newegg.com - EVGA 01G-P3-1371-AR GeForce GTX 460 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card
The rest of my main system specs are:
motherboard - ASUS M4A785TD-V EVO AM3 AMD 785G HDMI ATX AMD Motherboard
cpu - AMD Athlon II X2 250 Regor 3.0GHz Socket AM3 65W Dual-Core Processor ADX250OCGQBOX
ram - Crucial 2GB (2 x 1GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600)
hard drive - Western Digital Caviar RE 160GB Sata 3gb
dvd drive - LG 18x DVD+-R DVD Burner with 12x DVD-RAM
(one other dvd drive as well)
case - XION II XON-101
sound card - Creative Sound Blaster Audigy SE
Now, from what I've researched, it seems like cause of having to use that adapter, I will be sharing power between that one connection to the video card and everything else in my computer on the same rail? Just wondering if anyone here would be able to tell me if this power supply should be enough or if I will need a new power supply for this video card as well? I have a friend with a very similar setup who is ok, but I wanted to double check here and make sure?
If I do end up falling short on power because of the adapter, it will simply cause my computer to shut off when using heavy system resources, right? Not sure how else I'd be able to tell if I'm pushing the PSU for more than it can give me? I'd really rather not get another PSU if at all possible, cause the upgrades I've already spent money on have left me extremely tight as it is.