A bit of an odd question regarding 1080Ti and PSU.

Blubberykollis · Mar 22, 2017

So I am buying a GTX 1080Ti along side of a i7 7700K.

I am a bit paranoid when it comes to choosing PSU.

Would 850W suffice?

vrumor · Mar 22, 2017

600w would be plenty, the key is making sure it is a quality PSU. Seasonic, XFX, are a few names to look for.

Blubberykollis · Mar 22, 2017

I'm eye-balling the Corsair RM850i
Is there any other model you could recommend me?
Preferably 850W and in the same price range

raisonjohn · Mar 22, 2017

Blubberykollis :

The RM850i is a good-quality PSU. But, I'd only get that if you're looking at SLI'ing two GTX 1080Ti's. If you don't plan to go multi-GPU and just be using a single GTX 1080Ti alongside that unlocked i7-7700K, then, just get a good-quality ~600W PSU.

Your originally-selected Corsair RM850i costs ~$145: Corsair 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($144.99 @ B&H)

If you really like the RMi series (due to CorsairLink and monitoring PSU usage), then, the 650W version would be more than enough:

Corsair 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($129.99 @ Best Buy)

If CorsairLink doesn't concern you, and you're willing to spend more than ~$100, then any of these will do:

Corsair RMx 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($114.98 @ Newegg)

SeaSonic PRIME Gold 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($114.90 @ SuperBiiz)

EVGA SuperNOVA P2 650W 80+ Platinum Certified Fully-Modular ATX Power Supply ($107.99 @ SuperBiiz)

But if you really want to save a lot, without compromising the power requirements of your rig, then consider these more-affordable but good-quality options:

SeaSonic 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($99.80 @ OutletPC)

EVGA SuperNOVA G3 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($98.99 @ SuperBiiz)

EVGA SuperNOVA G2 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($89.49 @ SuperBiiz)

SeaSonic 650W 80+ Gold Certified Semi-Modular ATX Power Supply ($77.99 @ SuperBiiz)

Blubberykollis · Mar 22, 2017

A very elaborate answer, that's why I like the community on this site.

Personally I believe I MIGHT go SLI in the distant future. So I like future-proofing my rig. Hence why I am looking for at least 850W

vrumor · Mar 22, 2017

In the distant future youll upgrade your single GPU before adding another. Generation after next will have a single GPU thats more powerful than 2 1080ti's. Just kinda how it works.

raisonjohn · Mar 22, 2017

^-- yes. In short, it's either you SLI now (with an 850W PSU) or end up buying a new better single card in the future (still usable and "future-proofed" with a 600~650W PSU).

Now, just to answer your question directly. If you really prefer to get an 850W PSU for your peace of mind, these are suggested alternatives to your originally-listed $145-priced RM850i (note that all these do not have the CorsairLink feature as the RMi series has):

XFX PRO Black Edition 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($137.86 @ Amazon)

EVGA SuperNOVA G3 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($119.99 @ Jet)

Corsair RMx 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($119.99 @ Newegg)

EVGA SuperNOVA G2 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($116.71 @ Jet)

SeaSonic X Series 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($107.99 @ SuperBiiz)

Blubberykollis · Mar 22, 2017

vrumor :

I can't really agree to that statement. I used a GTX 690 til I got my hands on GTX 980 SLI.
GTX 690 was about 10% faster than a single GTX 980 which is 2 generations ahead. (Tested through benchmarks)
It was on pair with my friend's 980 Ti even.

Blubberykollis · Mar 23, 2017

raisonjohn :

^-- yes. In short, it's either you SLI now (with an 850W PSU) or end up buying a new better single card in the future (still usable and "future-proofed" with a 600~650W PSU).

Now, just to answer your question directly. If you really prefer to get an 850W PSU for your peace of mind, these are suggested alternatives to your originally-listed $145-priced RM850i (note that all these do not have the CorsairLink feature as the RMi series has):

XFX PRO Black Edition 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($137.86 @ Amazon)

EVGA SuperNOVA G3 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($119.99 @ Jet)

Corsair RMx 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($119.99 @ Newegg)

EVGA SuperNOVA G2 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($116.71 @ Jet)

SeaSonic X Series 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($107.99 @ SuperBiiz)

What may be the difference between the G2 and the G3 PSU if I might ask?

raisonjohn · Mar 23, 2017

Blubberykollis :

The EVGA SuperNOVA G3 is the recent version (update) on the good-quality G2. The new version is based on EVGA's OEM (Super Flower) Leadex Gold II Platform. Generally, the main difference between the G3 and the G2 are: 1) Fan Size and Bearing Type (140mm-dia. Double Ball Bearing Fan on G2; 130mm-dia. Hydro-Dynamic Bearing Fan on G3); 2) New Fan Grille; 3) New Platform (Leadex Gold II); 4) Even Lower Ripple; 5) More Compact Size/Footprint; 6) OTP (Over Temperature Protection) which was not present in older G2 models (only newer G2 models); and 7) Additional cables (not sure how many, as this may be updated from time to time).

Blubberykollis · Mar 23, 2017

Ah! So I should consider getting the G3 then?

raisonjohn · Mar 23, 2017

Blubberykollis :

Yes, since it's only $3 difference.

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A bit of an odd question regarding 1080Ti and PSU.

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