PSU suitable Wattage help

[JammyPiano]

Hey guys! I am so close to reaching my funds goal for my upcoming rig and while running thought to clarify all the components I felt concerned about the PSU Wattage I originally planned to use.

here's my proposed specs:

-i7 3770k (will be running at around 4ghz approx)

-EVGA gtx 680 classified in SLI

-16gb Corsair Platinum 1866mhz

-Corsair h100i

-1 SSD

-1 7200rpm HDD

-1 Blu Ray drive

-7 high performance case fans

Those are really the only components worth mentioning, I planned to run these off a Corsair 860i but the SLI'd classifieds and OC'd i7 has me worried. I was thinking about buying the 1200i instead should the 860i be insufficient as I'm adamant about sticking with corsair as I like to keep with the overall corsair theme. However over here in England it's about £60 more (~$90 us) which means postponing my build a little longer. I'm curious to see what everyone else thinks as power supplies is the area where my knowledge fall short. So, is an 860i adequate?

[Conelton]

I just tapped your rough specs into a PSU wattage calculator and it said that recommended was at least 620W, so 860 should be fine I reckon. Either way, a 1200i is way overpowered and probably would be less efficient for that system.

[JammyPiano]

okay i'll go with the 860i, thanks for your help! -Jammy

[Bearsvin]

id like to get a link for that PSU wattage calculator! :)

[Eric1024]

You should be perfectly fine with an 860W psu, especially given that it's a high quality unit like an 860i. My system (3930k @ 4.5GHz, single 680, raid card, 4 hdd's, one ssd, sound card, h100, 6 noctua's) draws about 450W at load (220 from the cpu, 190ish from the gpu, and the rest from other components), so you should be more than fine with a 3770k OC'd and 2x680's on 860W

Also for what it's worth I have an ax750 (gold, non-"i" series, older model) from Corsair.

[orangecat]

Go for something around 800-1000 watts most people would way its a little overkill and it is a bit but your are not supposed to run your power supply at under 20% load and over 80%. In between this you will get maximum efficiency on your PSU.

[VladPhotoPro]

id like to get a link for that PSU wattage calculator! :)

Here you go:

http://www.thermaltake.outervision.com/

[Guest]

700w will be more than sufficient for 2 way SLI. You'll be maxing out about 550ish, possibly lower. Aside from that, is this build for gaming? If so that RAM is a complete waste of money. I understand if you want Dominator because of the aesthetics but you don't need 1866. You won't notice the difference in gaming between 1866 and 1600.

[Maverik5124]

700w will be more than sufficient for 2 way SLI. You'll be maxing out about 550ish' date=' possibly lower. Aside from that, is this build for gaming? If so that RAM is a complete waste of money. I understand if you want Dominator because of the aesthetics but you don't need 1866. You won't notice the difference in gaming between 1866 and 1600.[/quote']

When I bought my ram the price difference of a 1866 kit vs a 1600 kit was 2 dollars.. So if he can get better performance for basically free, why not

[Conelton]

id like to get a link for that PSU wattage calculator! :)

This is the one I used, but it looks like it's just a re-skinned version of the one above.

http://www.extreme.outervision.com/psucalculatorlite.jsp