I would like to try building a desktop and would like your opinion on which PSU to get. Also, I would like your opinion on the build itself (minus the PSU). Lastly I would like to know for future reference how to determine which PSU will be sufficient/compatible with future builds. Thank you in advanced for all your help!
Case: Corsair 650D
Mobo: Asus Z77 sabertooth
CPU: Intel i5 2500k
Ram: Corsair vengeance 8 gb
GPU: EVGA GTX 670
SSD/boot drive: Patriot wildfire 120 gb
HDD Western Digital black caviar 1 TB
HDD2: Western Digital black caviar 500 MB
Optical Drive: Asus Bluray drive
Cooling Corsair H80
The H80 is not "liquid cooling" it's a sealed enclosed loop. You are correct in that a 2500K does not need more than a much cheaper Hyper 212 Evo to reach it's 4.5Ghz sweet spot. OP it's up to you if you just want to spend the extra money on a cooler that's not much better than a $30 air cooler. You need an H100 with the optional fans in a push/pull configuration to beat a good air cooler.
With a single GTX 670 a quality 500-550w power supply is fine. Stick with Corsair, Seasonic, PC Power and Cooling, XFX, Silverstone, Enermax, OCZ and Antec. If you plan on adding a second card in the future plan on a 700-750w power supply.
All in all it's a solid build. If you do change to a cheaper air cooler make sure you get the low profile version of that Vengance RAM.
Thank you for the responses everyone! So taking your advice, I'll go with the Corsair AX750 for PSU. I'll also choose air cooling for the CPU. Is the hyper 212 evo a good cooler, and are there other suggestions on coolers? If not, i'll go with the hyper 212 evo.
The Hyper 212 Evo is the best cooler for the money. You can get better air coolers like the Noctua DH 14 but they are much larger and more expensive and the Evo comes within a few degrees of even the best of them.
Yes that is the RAM I was talking about. No clearance issues with that.
P67 is an older board with less features than Z77. If you are doing a new build a Z68 or Z77 are the way to go. Asus boards are generally excellent.
Any single graphics card system only needs a 550w power supply even with a ~$500 GTX 580/680 or HD 6970/7970.
Here is a list of recommended requirements by card.
The other components are taken into account in that recommended PSU list. Also that list assumes a "generic" brand power supply. So with a quality model you can usually go with about 50 watts less. I generally recommend you go with the AMD/Nvidia minimum though.
So, is what you said about the HX 850 vs AX 850 the same with the entire HX vs AX series of products (like the 750 watt ones)? To make sure I understand, do you mean that the HX 850 is more stable in power than the AX 850, but less power efficient since it is 80 plus silver and not gold?
I'll go with the 750w just in case I decide to go SLI as I have not seen how things look with one graphics card yet. Is there any real downside to having a higher wattage PSU (in case a single graphics card is enough for me)?
No it won't hurt anything. I have had this Corsair 750TX for a few years now because I got it on amazing sale and I was always going to get another GTX 460 and run Sli. I never got around to needing a second card until recently and now you can't find any of the original good ones any more. They all have the crippled 192 bit memory bus and not the 256 bit bus found on the original ones. I'm just going to get a GTX 660 or 660 Ti when they come out. But anyway back to the point, I have been running an overpowered power supply for years with no problems.