PSU Recommendations?

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I'm looking for a reasonably quiet PSU in the 600-700W range for about £100 as part of a new PC build (see sig).

So far the two most likely candidates seem to be:

Seasonic M12 700W

or

BeQuiet Dark Power Pro 650W

I've been pretty happy with my current Seasonic PSU, but I've also heard very good things about the BeQuiet ones.

Does anyone have any first hand experience of either? Or any other recommendations at around £100 I might have missed?

Thanks
 
The Coolermaster modular 620W is worth considering, granted its closer to the 60-70 squid ballpark...
 
Enermax and Be Quiet's RMA services are based in Germany as far as I'm aware, so you'd get a faster turnaround than with a Corsair.

The Be Quiet! PSU's are supposed to be very good.
 
Thanks for all the recommendations.

Went for the Corsair HX620 in the end :)

and how do you find it on the quietness front? I ask as I'm looking at this too - pretty much based on all the good comments on OCUK.

Is it really quiet or reasonably quiet (vague criteria i know)

I bought a Tagen 480w a few years ago which was supposed to be silent. Sounded like i had a jet engine! Don't want a repeat experience
 
and how do you find it on the quietness front? I ask as I'm looking at this too - pretty much based on all the good comments on OCUK.

Is it really quiet or reasonably quiet (vague criteria i know)

I bought a Tagen 480w a few years ago which was supposed to be silent. Sounded like i had a jet engine! Don't want a repeat experience

It's as about as quiet as your going to get from an air cooled PSU of that wattage.
I have 2 OCZ's and they are louder than the Corsair.

Yes it really is that good...honest.

This is what they said about my OCZ..

The only thing left to test is the PowerStream’s noise levels. When I saw the box and it said that the power supply stays below 30dB I was skeptical. Most fans generate noise, if not motor noise then noise from the air movement. The OCZ PowerStream is no exception to this rule; in testing I measured it at 40.8dB. Now in all fairness I do not have an anechoic chamber nor do I have the most expensive SPL meter, but I can tell you that when I placed the power supply in a very, very quiet room it was audible. When I say quiet I mean that the noise floor is below the threshold of my testing equipment of 35dB. This does not mean that OCZ is outright lying about how quiet the power supply is, the PowerStream is very quiet, and in a normal room with other components like hard drives and CPU fans running it is extremely unlikely that you will ever hear the PowerStream’s fans running.

 
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Im quite tempted to change out the fan if it is too noisy. The fan is rated at 30(ish) dB, wonder what it would be like with a quieter one in there.

Just be a PITA as knowing my luck it would break straight after that and the warranty is void!
 
Im quite tempted to change out the fan if it is too noisy. The fan is rated at 30(ish) dB, wonder what it would be like with a quieter one in there.

Just be a PITA as knowing my luck it would break straight after that and the warranty is void!

I'm trying to avoid all that tweaking stuff - cos that^ WOULD happen to me!

In terms of cables - i read on another thread about it not having PCIe cables or something. I don't suppose you can elaborate? I'll look for the thread link...

http://forums.overclockers.co.uk/showthread.php?t=17870036&highlight=username_Noob101
 
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At £55 this week offer, the Corsair TX650 is a steal, was looking to buy PC Power & Cooling 750W but changed my mind when I saw the price of this one. Ordered one myself, got it today and very happy, a worthy replacement of my old Seasonic S12 500 which was fantastic.
Even better is that this TX650 is built by Seasonic unlike TX750 by Channel Well Tech.
I can never be bothered with modular as I always end up using all my cables. Oh and this one has 2 PCIE 6+2 pin connections as well, compatible with 9800 GX2.

Review from DriverHeaven.net:

Despite our doubts after studying the interior of the TX650W it not only performed well but the power output and regulation is extraordinary. Corsair guarantees the TX650W to deliver 650W DC power at 50C degrees and it can clearly live up to these claims, as not only did it perform flawlessly up to its maximum output but it reached an insane output of 780W before the overload protection circuit shut it down. The voltage regulation circuit of the unit is also remarkably fast and quickly compensates when huge load shifts take place. The electrical performance of the TX650W is in one word, impressive. But it is not only the electrical performance of the unit which is impressive; the same exact thing can be said about its efficiency. No matter what the load percentage was, the efficiency never went below 83%.

So basically, you're paying for a 650W and get a 750W PSU, all that power on a single 12V rail :p
 
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