Which power supply is better and quieter?

NickMazzy20 · Nov 29, 2016

Im stuck choosing between these two power supply's,

https://www.amazon.com/dp/B00KYK1CC6/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=JJXEJTIE05UN&coliid=IR55EF8COL1T2&psc=1

or

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139098&utm_medium=Email&utm_source=IGNEFL112916&cm_mmc=EMC-IGNEFL112916-_-EMC-112916-Index-_-PowerSupplies-_-17139098-S1A7A&ignorebbr=1

which one is quieter, and has a better rating?

Main parts in my build:

MSI Geforce 1070 8GB
Intel i7-6700K LGA 1151
Cooler Master Hyper 212 evo
Msi enthuastic Intel (Z170A Gaming M7)

MatthewGB · Nov 29, 2016

You don't need 850W. You need 600W maximum. Use a PSU calculator.

NickMazzy20 · Nov 29, 2016

MatthewGB :

I did use a psu calculator, I have more parts that add it up to 850W, plus over clocking, my question was which one is better not, how many watts do i need.

NickMazzy20 · Nov 29, 2016

MatthewGB :

And I plan to upgrade in the future

MatthewGB · Nov 29, 2016

To reach anywhere NEAR that amount, you'd have to be running THREE 1070's. What on earth did you put into the calculator?!

NickMazzy20 · Nov 29, 2016

MatthewGB :

can you please answer the correct question, thank you.

Rocky Bennett · Nov 29, 2016

That Corsair looks pretty sweet. It should work nicely for you.

Rocky Bennett · Nov 29, 2016

NickMazzy20 :

This reminds of I Robot.

NickMazzy20 · Nov 29, 2016

Rocky Bennett :

ok thank you, whats the advantages to using the corsair over the evga?

Eximo · Nov 29, 2016

Both semi-modular
Corsair is Gold efficiency rated, EVGA is bronze, the Corsair should be quieter.

I rather trust JohnnyGuru reviews, so I would lean towards the Corsair in this price range.

NickMazzy20 · Nov 29, 2016

Eximo :

Ok thank you

Eximo · Nov 29, 2016

As for the 850W, it is a bit much for a single card, but it is what I would also buy just in case I ever do SLI again.

I threw my system in and got 490W with SLI getting to 706W. That puts an 850W supply at 80% usage before the 1080s have been overclocked, so 3 1070s on an 850W supply would be very risky.

NickMazzy20 · Nov 29, 2016

Eximo :

I plan to do sli with 2 msi cards, possibly two 1070, or one 1070 and one 1080. what happens if i get a power supply that has WAY more power then needed?

bignastyid · Nov 29, 2016

Quality wise I'd go with the B2 over the CS. The B2 has a higher temp rating 50°C vs the CS's 40° mainly due to the B2s better capacitors. When it comes to PSUs build quality trumps effciency.

BTW 750w would be plenty for 2 1070,s even with cpou and gpu overclocking. You can't SLI a 1070 and a 1080, SLI requires the gpus to be the same model and use the same vram.

NickMazzy20 · Nov 29, 2016

bignastyid :

thank you, which one is quieter?

bignastyid · Nov 29, 2016

NickMazzy20 :

Not sure as there's no noise data available for the B2, but I doubt there is a much of a difference.

NickMazzy20 · Nov 29, 2016

bignastyid :

NickMazzy20 :

Not sure as there's no noise data available for the B2, but I doubt there is a much of a difference.

Ok thank you

Eximo · Nov 29, 2016

You can't mix 1070 and 1080 together, so it has to either one or the other.

Power supplies are built to operate 50-90% load range. They are most efficient when they are in this range. When you run a very large power supply with a light load it is less efficient and can even provide poor voltage regulation. This isn't as true as it was back in the day. Basically when Haswell came out they had to update the ATX specification to accommodate the very low power states that Intel created. And a lot of the newer, more expensive, supplies have switched to DC-DC converters inside.

NickMazzy20 · Nov 29, 2016

Eximo :

ok, so if im about 250w above what i actually need, is that ok?

Eximo · Nov 29, 2016

Yes, at 500W or so you would be around 58%, well within the good zone. And given that the power supply would have a lot of overhead, it wouldn't have to spin the fan as fast.

NickMazzy20 · Nov 29, 2016

Eximo :

ok thank you

Which power supply is better and quieter?

Commendable

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