Which Bequiet PSU?

Andromeda1983 · 1 Aug 2011 at 19:55

Due to so family issue's I wont be able to replace my PSU until the end of the month so I have decided I am going to go with a new Bequiet Dark Power Pro like last time since waiting will give me a bigger budget. However I am unsure which wattage i'll need. Here's my system specs:

i-2500k overclocked to 4.3 Ghz
MSi P67-G45 Motherboard
8GB Kingston DDR3 10666C9
Gigabyte 460 GTX SoC Edition 1GB
OCZ Vertex 120GB SSD Hard Drive

stulid · 1 Aug 2011 at 19:55

About 550=650W is ample for that.

Try a Gold rated bequiet - http://www.overclockers.co.uk/showproduct.php?prodid=CA-051-BQ&groupid=701&catid=123&subcat=1083

Andromeda1983 · 1 Aug 2011 at 19:57

I was thinking http://www.overclockers.co.uk/showproduct.php?prodid=CA-043-BQ&groupid=701&catid=123&subcat=1083

stulid · 1 Aug 2011 at 19:58

Andromeda1983 said:
I was thinking http://www.overclockers.co.uk/showproduct.php?prodid=CA-043-BQ&groupid=701&catid=123&subcat=1083

Thats some massive money for a 650W PSU, but Gold rated PSU's usually do cost big bucks especially when they are modular.

For example - http://www.overclockers.co.uk/showproduct.php?prodid=CA-039-OC&groupid=701&catid=123&subcat=1098

Andromeda1983 · 1 Aug 2011 at 19:59

It is but the PSU is really as quiet as advertised, I had the P8 version and you really had to put your ear to the PSU to see if the fan was working.

stulid · 1 Aug 2011 at 20:00

Andromeda1983 said:
It is but the PSU is really as quiet as advertised, I had the P8 version and you really had to put your ear to the PSU to see if the fan was working.

I believe you, I have used one in a build before (a P8).

Andromeda1983 · 1 Aug 2011 at 20:01

And the PC its going in was designed to be a quiet system, my temp PSU, a Corsair TX650 is pretty upsettingly loud

stulid · 1 Aug 2011 at 20:05

Andromeda1983 said:
And the PC its going in was designed to be a quiet system, my temp PSU, a Corsair TX650 is pretty upsettingly loud

The AX Corsairs fan dont spin up until 50% load, so will be silent.

Andromeda1983 · 1 Aug 2011 at 20:13

Im looking into reviews of the AX now and from what I am reading the AX650 etc are basically Seasonic X-PSU's with Corsair branding

stulid · 1 Aug 2011 at 20:21

Andromeda1983 said:
Im looking into reviews of the AX now and from what I am reading the AX650 etc are basically Seasonic X-PSU's with Corsair branding

Thats it exactly, most of these good PSU are just Seasonics platforms with a new name or made by Seasonic to a price point.

I even think the Bequiet P9 you linked to is a Seasonic.

Andromeda1983 · 1 Aug 2011 at 20:22

Yeah I found a review of the X-650 which would be the Corsair AX650

Functionality (20% of the final score) - with completely modular topology, not much can be said against the cabling on this unit. No, not many people would find the need to unplug the main ATX cable from the unit, but I can't really say it's that big a deal as stable as this unit held its voltages. And fanless operation is nice... especially when this unit was able to remain fanless for a whole test in my hot box. 10 . Man, I'm throwing those tens around an awful lot lately.

Speaking of which my Budget is 140

stulid · 1 Aug 2011 at 20:25

Fully modular too

Andromeda1983 · 1 Aug 2011 at 20:26

Aye but when are you going to need the 24 Pin disconnected

and now that I look at it and think, would going for a 750 AX or Bequiet ensure quiet operation

http://www.overclockers.co.uk/showproduct.php?prodid=CA-044-BQ&groupid=701&catid=123&subcat=1083

vs

http://www.overclockers.co.uk/showproduct.php?prodid=CA-027-CS&groupid=701&catid=123&subcat=1084

stulid · 1 Aug 2011 at 20:32

It will certainly help the PSU remain below the threshold of where the fan spins up.

Seasonic do a completely fanless PSU also, let me find it.

http://www.anandtech.com/show/3962/seasonic-x460fl-460w-fanless

Andromeda1983 · 1 Aug 2011 at 20:33

Looking at my budget and remembering I have a PSU to sell on, I could stretch to an 850AX or 850Bequiet but thats overkill

stulid · 1 Aug 2011 at 20:34

Andromeda1983 said:
Looking at my budget and remembering I have a PSU to sell on, I could stretch to an 850AX or 850Bequiet but thats overkill

Massively.

Fanless PSU link above now.

Andromeda1983 · 1 Aug 2011 at 20:39

At Full load the Bequiet hit's 25.9dB(A) compared with the Corsair AX850 which reaches 40db(A) at full load which is probably due to the choice of fan plus the fact that Corsair cannot put a PWM fan into the AX because of an Antec Patent apprantly. But honestly I wont be hitting even close to half load even with a 750W so the 2 PSU's are pretty close at around 18dB(A)

stulid · 1 Aug 2011 at 20:41

25.9 vs 40 (if thats an accurate measurement?) is a lot.

every 3db is meant to be a doubling in sound pressure.

Andromeda1983 · 1 Aug 2011 at 20:48

Well the 40dB(A) was confirmed from Corsair's testing labs as being the highest sound output of the fan used in the AX at 100% load. The one used in the Bequiet is a Silentwings 120/140mm fan (depending on the model) with a highest rated dB(A) under 100% load at 25.9dB(A)

stulid · 1 Aug 2011 at 20:52

Well one of my educated guesses based on power consumptions in reviews of a GTX560ti suggest you would be pulling just over 300W at the wall socket while gaming heavily.