750W / 850W ?

[mongoyl]

Hello guys. I'm in France and building a new rig but i got a doubt when i reached ordering my PSU.

 

The build will be Maxwell using the I7 5820K and 2 EVGA GTX 980 SC ACX 2.0.

 

At first it'll be mostly air cooled except for the CPU using the AIO Corsair H100i GTX and overclocked but a bit later turned fully watercooled so after i saw that threat ( http://linustechtips.com/main/topic/199255-how-many-watts-do-i-need-check-here/) i was thinking, do i need a 750W like mentionned or higher ? Like a 850W for exemple.

 

Also i checked and wondered which to take between Cooler Master V series and Corsair HXi ?

[H4X3R]

EVGA 850W G2

[dmanschramm]

I'd personally go for the 850W just to be safe. Go with the Corsair HXi series. I own one and it's great.

 

@mongoyl

 

Hope this helps

[Shhuks]

EVGA 850W G2

This one

[Blecter]

Another agree for the EVGA. Gives you plenty of headroom for any OC'ing/etc. you might do.

[Aniallation]

At first it'll be mostly air cooled except for the CPU using the AIO Corsair H100i GTX and overclocked but a bit later turned fully watercooled so after i saw that threat ( http://linustechtips.com/main/topic/199255-how-many-watts-do-i-need-check-here/) i was thinking, do i need a 750W like mentionned or higher ? Like a 850W for exemple.

 

Also i checked and wondered which to take between Cooler Master V series and Corsair HXi ?

Hey, maker of that thread here. Welcome to the forum!

 

750W is the minimum you'll want to be running with everything overclocked. It will definitely work perfectly fine, but an 850W would be recommended because it never hurts to have extra wattage, and at the loads you're putting on it, it will actually help with efficiency and overall reliability of the power supply over a long period of time.

 

The EVGA G2 mentioned above is an excellent choice. Since you live in France, it may be branded as the Super Flower Leadex Gold, however on the inside they are the same thing. The fully-modular Cooler Master V is a great choice also, but the semi-modular version doesn't compete with the G2/Leadex, it's in a different class of power supplies. There's also some other good choices out there, offerings from the likes of XFX, Seasonic, and Antec. 

 

IMO, the Corsair HXi is overpriced for what you're getting.

 

Is there a particular site that you would be shopping from so we can see what's available? If you can provide us with that and a budget, we can help you pick out a specific PSU for your needs and price range.

[quan289]

Corsair HX850i - 173.90€ : http://www.magicpc.fr/alimentations/35267-Corsair-HX850i-0843591041195.html

Cooler Master V850 - 134.42€ http://www.rueducommerce.fr/Composants/Alimentation-PC/Alimentation-modulaire/COOLER-MASTER/4898846-Alimentation-100-modulaire-COOLERMASTER-V850-850W-80-Gold.htm#moid:MO-8AACAM22718038

EVGA Supernova 850 G2 - 138€ : http://www.rueducommerce.fr/Composants/Alimentation-PC/Alimentation-modulaire/EVGA/4919653-Alimentation-100-modulaire-EVGA-SuperNOVA-850-G2-850W-80-Gold.htm

 

 

Since you could get a comparable unit to the Cooler Master for slightly more but offer a more relax fan profile (semi-passive mode and fan doesn't ramped up as high) and a longer 10 year warranty upon registration (instead of 5), I would go with the EVGA.

 

The HX850i is also a well-built PSU but is much more expensive. Unless you feel that spending more 38.90€ more for better efficiency, an even more relax fan profile, a FDB fan, and feature set due to Corsair worth it, I would get the EVGA and save that money on something else.

[mongoyl]

Thank you for all the informations !

 

I wasn't stopped on one specific seller or brand so far and obviously 860W from EVGA seems to be the one to go with. Unless the Corsair Link is really useful ?

 

The build is already on it's way and i kept about 250€ for the PSU and delivery cause it's a pretty important piece of a rig, i want it strong enough to power it up and secure enough to last so only going with good brands, even if a bit more expensive at first, it's better on the long term.

 

Thank you for the links too, at first i thought of getting them out of Amazon or materiel.net (bad experience with cdiscount and rueducommerce) but it's pretty good price there !

 

Also another question, the pc will be running almost 24/7, as this one is, is it more important to give it the price of a platinum vs a gold one ? Just thought about it

[AliveGhost13]

Corsair link isn't particularly useful, just for fans and voltage measurements etc

 

I'd go for the EVGA

[quan289]

Unless the Corsair Link is really useful ?

 

is it more important to give it the price of a platinum vs a gold one ? Just thought about it

 

Corsair Link allows you to monitor input/output power draw and the efficiency. This can be helpful in calculating in how much your computer is affecting your electricity bill as well as allow you to know how much headroom you have for upgrade in the future. Personally, I don't find this all useful, since I'm able to get this information on my own. For you, a Kill-a-Watt can give you a ballpark reading at the wall, while you can simply asked on the forum regarding upgrades.

 

By default, the HXi is a multi-rail unit, but Corsair Link will allow switch it over to single rail mode. SR can be helpful to those who are overclocking their system to extreme levels under very strenuous loads, where the PSU may prematurely shut off because they manage to set off the 40A OCP limit. For others users, leaving it on MR mode can provide you an extra layer of safety in an event of a short, and this is an added value.

 

This isn't about Corsair Link but rather your own sensitivity to noise. If you look at the HX750i and Supernova 750w G2 review, having a quieter FDB fan spinning around 1000RPM max with a less restrictive wire grille (may exhibit less turbulent noises), the HXi is less noisy with it's 35dBA at high load in comparison to the 48dBA on the G2. While many people will find the G2 be "quiet" under a particular load (I'm among these people), there are people who are a bit more sensitive to noise that may find it to be a little noisy.

 

Regarding efficiency, this may be an interesting read: http://www.hardocp.com/article/2011/10/04/80_plus_irrelevant_to_you_when_buying_psu/#.VSlGZJMe5Zh

It also give you a comparison of standard 80+ to platinum on the second page.

[mongoyl]

Thank you again for all the intel ! Can't go wrong with all that now ^^