Originally Posted by mikeaj
How much is the CX750 compared to the S12II 620W? Below I am assuming the price is similar.
CX750 should have a little better performance, but I'd rather have the Seasonic for most situations. The Seasonic is a good mid-end budget design built with long-lasting parts. The CX750 is a higher-end design that's been cost cut down a bit.
If you're really serious about the second 7950, have a very power-hungry processor, and want to overclock everything a lot all the time, run very high loads all the time, want to benchmark high OC scores, etc., then maybe get the CX750 (not like you would reach 620W but still). If you're serious about a second graphics card and would rather not use adapters for the PCIe power connectors, get the CX750. Otherwise, just get the S12II.
For your situation, keeping budget in mind, I would not recommend TX650.
I'll run 4.5Ghz i5-3570k,2HDD's .I'm pretty serious about HD 6850 crossfire,not really for 7950 but who knows.I've read CX750 has A LOT of cables.Before my new case arrives,i'll be using case with top-mounted PSU.And for the tons of cables,is it true?
the CX750 is 170LV and the seasonic is 120LV .I want to go future proof as possible because i not once skimped on the PSU and it was my biggest mistake.I don't do Folding at Home or bechmarks a lot.I just game like 2-3 hours a day.That's the highest load i make.I want my PSU to last for my next build,so around 5 years of working PSU is what i'm looking for.3 more for this rig and then upgrade.And will CX750 take even GTX 680/HD 7970 SLI/CROSSFIRE? Like i said i want the best bang for the money so i don't mind wasting a bit more on the CX750 if it's going to last longer and it's build quality is better.I'm all about quality and future proofness to be honest.Too bad i can't stretch my budget enought for X-850 from Seasonic
Will the CX750 give me more headroom and overall experience?