Is my PSU big enough?

Toggle sidebar Toggle sidebar
B

B3NDY

Reputable
Apr 18, 2014
234
0
4,710
Right now I'm using the Corsair RM850 PSU. I think it is big enough for the electronics but my problem is I'm going to build a custom loop soon and don't know whether it will be big enough to power that too.

What I'm planning to build:
Asus M5A99FX Mobo
AMD 8350 CPU
2x GTX 970 GPU
8GB Corsair Vengeance RAM
2x 1TB HDD
1x 120GB SSD

The pump I'll be using is the Swiftech MCP655 which is 12V.

I know my PSU is large enough to handle both GPUs and everything else but it's the watercooling part which I'm concerned about. Will it be able to power the pump as well and about 10 fans?

Also I'm looking to go to intel soon so will it be able to power an i7?

I might be doing some light overclocking on my GPUs and also quite a bit on my CPU so long as it means my system doesn't get too loud. Will it be able to overclock stably with this much power being used because I know PSUs can become unstable when they get close to their limit.
 
Solution
B
The RM850 has built-in protection against over-current, over-power, and short circuit situations (and some other situations also). Then the PSU will shut off temporarily, and after a few minutes the PSU should reset and become available for use again.

It is unlikely that the RM850 will cause serious damage to other components by power surges or similar as it is not a "cheap" unit at all.

Use the RM850, and if by chance there are problems with the unit, then it should be RMA'd.
Sort by date Sort by votes
B

B3NDY

Reputable
Apr 18, 2014
234
0
4,710


The I7 would likely be the 4790k, no extreme processors, can't afford that! As for overclocking, I would only use as much voltage that Nvidia allows to get my overclock, I wouldn't use any bios hacks to get any higher. For the CPU I wouldn't overclock too much, likely only to about 4.7GHz because that's where my chip seems to hit the voltage wall. That used about 1.475V normally if you need to know that.
 
Upvote 0 Downvote
B

brispuss

Splendid
Dec 27, 2014
2,607
26
26,490
Thank you!

Assuming an i7-4790k overclocked @ ~ 4.7 GHz @ 1.35 V, and with other components as listed above, the Corsair RM850 850 W PSU should be OK to power the system, as far as capacity is concerned.

Note that the RM850 uses some lower grade components, so there may a concern about its long term reliability. But note also that some PSU's with relatively low grade components have lasted for many years. You take your chances with these PSU's.
 
Upvote 0 Downvote
B

B3NDY

Reputable
Apr 18, 2014
234
0
4,710


Thanks for the reply and answer! Just so I can weigh up my chances what will happen if I do overload my PSU? Will everything just turn off and I'll have to replace it or could it send like a surge and break something?
 
Upvote 0 Downvote
Mathsnerds

Mathsnerds

Reputable
Jan 17, 2015
111
0
4,760
I would say that is enough for what you are planning. but if your thinking about SLI or CROSSFIRE then I would probably upgrade to a slightly higher wattage. I do agree with the RM Series. i have had some experience with them and they seem very stable. Hope this helps and good luck on your build!

:Mathsnerds
 
Upvote 0 Downvote
Dark Lord of Tech

Dark Lord of Tech

Retired Moderator
Aug 18, 2009
128,614
1,778
159,590
Upvote 0 Downvote
B

brispuss

Splendid
Dec 27, 2014
2,607
26
26,490
The RM850 has built-in protection against over-current, over-power, and short circuit situations (and some other situations also). Then the PSU will shut off temporarily, and after a few minutes the PSU should reset and become available for use again.

It is unlikely that the RM850 will cause serious damage to other components by power surges or similar as it is not a "cheap" unit at all.

Use the RM850, and if by chance there are problems with the unit, then it should be RMA'd.
 
Upvote 0 Downvote
Solution
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom