Currently I am using Newegg.com - ZALMAN ZM850-HP 850W Continuous @ 45°C (Maximum Continuous Peak: 1050W) ATX12V V2.2 / EPS12V V2.91 SLI NVIDIA SLI Certified NVIDIA HYBRID-SLI Certified - 9800 GX2 NVIDIA QUAD-SLI Certif, and I'm not sure if I could SLI two GTX 260's/280's with it (This is just wishful thinking, but who knows?) Newegg.com - EVGA 896-P3-1265-AR GeForce GTX 260 Core 216 896MB 448-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Desktop Graphics / Video Cards Newegg.com - EVGA 01G-P3-1284-AR GeForce GTX 280 SSC Edition 1GB 512-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Desktop Graphics / Video Cards I'm just linking the cards for reference.
From what I read and understand it should be able to handle it, but I wanted a second opinion.
Pre-post edit: Looks like I might not be able to, since newegg says the 12V3 and 4 run at 28A, but the 260 says it needs a 12V connection able to sustain 36A.
Am I reading this right, or should I shop for a new power supply when I want to upgrade to a 260?
By the looks of it you should be fine with two 260s for sure. I think SLI 280s would work without problems either.
Right. I forgot to account that the 260/280 take two power connectors each. >_>
You have enough connections for either 260 or 280 SLI. As far as wattage goes, the 260s will be fine. The 280 should also work, but you might be running the line. Either way, make sure you use the 3rd and 4th 12V rails of your PSU. They're the ones with the most amperage. (i.e. the most important thing when it comes to GPU power)