Choosing the right wattage

[Phoenix70]

Hello guys thank you for reading a post. I am about to get a new gaming PC in summer with the following specs: r9 290,i7 4790k, 16GB of ram,a big SSD,no hard drive and a corsair 750D... I plan to watercool and also crossfire my GPUs... Ive asked my people about PSU wattage and I have 2 choices from what it seems now. Either the corsair AX 860i (80+ plat, modular) or the RM 1000 (80+gold, fully modular) I need your opinions. thank you in advance

[Oshino Shinobu]

The AX860 (non i) would be my choice. You don't need 1000w for that, and 80+ platinum is better. Corsair link is not very useful on PSUs really, so I'd save the money with the non i version.

[hawthorne]

I would go for the 1000w as it gives you plenty of head room for crossfire and the r9 290x draw a lot of power. 

 

You don't need that much power but you might as well overkill.

[Enderman]

Both will work. If you don't plan to use corsair link I would not get the AX

[Andrew48]

I personally would go for the RM1000 just to have headroom more  and a quieter psu. 

[Oshino Shinobu]

I would go for the 1000w as it gives you plenty of head room for crossfire and the r9 290x draw a lot of power. 

 

You don't need that much power but you might as well overkill.

He's using 290s, not 290xs, so he still has plenty of headroom with the 860W. His system should draw a little over 700W-720W, giving him over 100W of headroom. 

[nj4ck]

absolute minimum 750W, if you want overclocking headroom 850W+. Make sure you get a good effeciency rating and don't cheap out.

[hawthorne]

He's using 290s, not 290xs, so he still has plenty of headroom with the 860W. His system should draw a little over 700W-720W, giving him over 100W of headroom. 

I would also go with the rm for quieter opperation. Maybe a Rm 850w.

[Phoenix70]

well, i want it to be futureproof too, effecient and have some OC headroom... RM 1000 then?

[daemonowner]

Corsair AX860 or AX860i

Cooler Master V850

EVGA Supernova G2 850W

 

Browse around your preferred retailer and see if you can find these PSUs. They're all great units, so if they're within your budget then go for it.

 

You won't need a 1000W unit to give you overclocking headroom. 850W is fine.

[Oshino Shinobu]

I would also go with the rm for quieter opperation. Maybe a Rm 850w.

That's also a factor I guess. In that case, I would actually support the 1000w over the 850w. I think the fan spin up is based on load, so the 1000w will be quieter more of the time. The AX series still has a hybrid mode though, but it's not as good as the RM series in that sense. 

[Raboo]

I would get the Corsair AX860

[Oshino Shinobu]

well, i want it to be futureproof too, effecient and have some OC headroom... RM 1000 then?

If you want something that will last for future upgrades and adding more powerful components, the RM 1000w may be a good idea. The 860w has room for OC on both cards and CPU, but may not last you as long as the RM 1000w if you get more power hungry parts. The AX series is better quality and more efficient though, you'll be good with either choice. 

[Phoenix70]

If you want something that will last for future upgrades and adding more powerful components, the RM 1000w may be a good idea. The 860w has room for OC on both cards and CPU, but may not last you as long as the RM 1000w if you get more power hungry parts. The AX series is better quality and more efficient though, you'll be good with either choice. 

well, i want it to last many years, so when i build a new PC in the future (it will be a really long time by that time) i want it to be relevant effecient and have enough power. i think ill go with the RM

[flibberdipper]

Corsair AX860 all the way.

[daemonowner]

Corsair AX860 or AX860i

Cooler Master V850

EVGA Supernova G2 850W

 

Browse around your preferred retailer and see if you can find these PSUs. They're all great units, so if they're within your budget then go for it.

 

You won't need a 1000W unit to give you overclocking headroom. 850W is fine.

 

well, i want it to last many years, so when i build a new PC in the future (it will be a really long time by that time) i want it to be relevant effecient and have enough power. i think ill go with the RM

All of these units will last a very long time, and are as efficient or more efficient than the RM series. The Corsair AX and AXi units come with a 7 year warranty, and the Supernova G2 has a 10 year warranty when you register it with EVGA.

They will easily last until you decide to upgrade. Also, 1000W is more than you need, and the RM series is unimpressive for it's price. These units are better than the RM series.