MSI GTX 1080 Seahawk &i7 6700K PSU help

Specs

Specs

Specs

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Joined
22 Jun 2015
Posts
5
Hi folks,

I'm Building my first gaming rig for a few years and I'm completely out my depth with PSUs. Anyways, I've done a couple of the PSU wattage calculators and they are telling me a 450W PSU will be enough, surely this is far too low? Is anyone able to advise at all please? I thought an 850W would be needed but maybe I'm completely wrong?

I've not got my full spec nailed down yet but so far I've got:

i7 6700K
MSI GTX 1080 Seahawk X
Asus Maximus VIII hero
I'll probably add on liquid cooling for the CPU as well plus the usual other HDD's & SSD's & pretty LEDs etc as well

Cheers,
Specs

EDIT: a year and a half for a first post? Surely that's a record!
 
Hi and welcome to the forums. :)

While a 450w psu may be enough I would advise a 550w unit to have some spare overhead so that the psu isn't running flat out all the time and ramping the fan up. Unfortunately the vast majority of 550w psu's that we normally recommend are still out of stock so I will be suggesting some 650w units. The Pascal gpu's are extremely efficient and I have yet to see my pc hit 300w at the wall even with the gpu heavily overclocked while benching. Normal gaming use in the 220-250w range measured at the wall.


This is a cracking deal at the moment. Be aware though that the Superflower Leadex psu's have bright white led's where you plug the cables in and they cannot be turned off.

My basket at Overclockers UK:

Total: £105.49
(includes shipping: £10.50)
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Alternatively the EVGA Supernova GQ 650w is also a very good psu. It's a FSP built unit with the full 650w available on the single 12v rail and has a 5 year warranty. Jonnyguru gave it 9.4/10 in his review.

My basket at Overclockers UK:

Total: £94.49
(includes shipping: £10.50)
​


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A couple of 550w units:-

My basket at Overclockers UK:


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The EVGA GS 550w is a Seasonic built unit with a single 12v rail of 540w and has a 5 year warranty. We have had reports of it from users on here that the fan can be noisey. That coupled with the high normal price means I don't normally recommend it but it has a significant saving at the moment. Review here.

The Superflower has the full 550w available on it's single 12v rail and also has a 5 year warranty.
 
Last edited:
Thanks for the quick reply, and your help! I was definitely thinking that a Corsair, EVGA or Seasonic unit would be a safe bet but I suppose I've saved a few quid not going ahead and getting an 850W.

I forgot how much of a pain speccing a PC can be!
 
If going for Corsair, go for the RMx series as they are argueably the best series that they do. Avoid the CX, CXM, VS and GS series at all costs.

Seasonic are overhyped and overpriced. They are the oem for other brands such as XFX and many of their own models form the basis of the units for these other brands. In many cases they are exactly the same as Seasonics own units but at a massive price saving. For example, the XFX Pro series Black Edition gold rated units are basically the Seasonic X series. The XFX XTR series are based on a tweaked Seasonic G series. Don't pay over the odds just because it has a Seasonic badge on it, the other brands that Seasonic make psu's for are just as good.

EVGA you can't really go wrong with if you avoid the budget units. The G2, P2 and T2 series are all built by Superflower and are basically the equivalent Superflower Leadex range (gold, platinum ot titanium) with a different fan and no tacky led's. The GS series are built by Seasonic. The GQ series are built by FSP. Avoid any other ranges's that I haven't mentioned and you will be fine. There are some new replacements coming soon as well. The G3 is replacing the G2 and is based on Superflowers new Leadex 2 range and there is also the G2L series which do have the tacky led's from the Superflower leadex.

Superflowers own psu's are top of the range as well and well worth consideration if you can live with those damn led's they seem to think everyone loves.

There is plenty of information available about psu's and who makes what for who. This is a excellent source of information including the oem, how many 12v rails, strength of rails and links to reviews (jonnyguru is probably the best review site).
 
I ended up going for the EVGA G2 650W so I've got plenty spare for future upgrades and for when I invitably make the leap to a VR setup!

Just need to wait for the mobo to arrive so I can get everything put together!

Cheers, Specs
 
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