Antec High Current Pro 750W or 850W

I've got my heart set on getting a 80 PLUS® Gold certified 750W or 850W PSU, that'll last me the next decade and have decided on the following:

Antec High Current Pro 750W PSU 80Plus GOLD £105
http://www.scan.co.uk/products/750w-...-fan-atx-v23-p
Recommended by Bit-Tech and Custom PC
or
Antec High Current Gamer Pro 850W £117
http://www.scan.co.uk/products/850w-...an-atx-v23-psu
Recommended by hardwareheaven and kitguru

There's very little between them in price.

I realize that my chosen PSU's are overkill for the given speck, but I am a serial upgrader and given the very small price difference at the Gold certified range, have opted for a bit more headroom than a 650W would afford me.

My build:
Silverstone FT02B-W
Asus Maximus V Gene
Intel Core i5-3570k
Arctic Cooling Freezer i30 Intel
EVGA GTX 670 FTW
Samsung SSD 830 256gb
Lite-On IHAS123
WIN 7 64-bit

Thanks for reading :)

With the current trend on making components less power hungry, I am not sure if your criteria for a power supply that will last you a decade is sound. However, it would always be nice to have a a good solid PSU that you can rely on whenever an update is due. Antec PSUs are of good standard. I only have a Bronze 520w version and it is very quiet.

Gold PSU and higher wattage does not guarantee better efficiency however.

A valid point but for me it's the knowledge that in the event that things to go tits up, that at least I'll have done all in my power to avoid frying some very expensive components but as you say it's no guarantee.

What do make of the following Corsair HX650 Professional Series 650 £91.57:
http://www.lambda-tek.com/CP-9020030...in=gbaseGB10.9
Are lambda-tek any good?

Quote:

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Originally Posted by bokawel

Gold PSU and higher wattage does not guarantee better efficiency however.

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That's actually exactly what it does. <- link to Power 80 website.

Quote:

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The 80 PLUS performance specification requires multi-output power supplies in computers and servers to be 80% or greater energy efficient at 20%, 50% and 100% of rated load with a true power factor of 0.9 or greater. This makes an 80 PLUS certified power supply substantially more efficient than typical power supplies.

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@alfabet0
A cheaper alternative to your choices, but equally efficient, would be the 750W Seasonic X series (modular). I'm actually getting one of these and it turns out it's very reliable.

It runs completely silent until 20% load - you can only hear the ball bearing during rotation at max load, which you wouldn't want to reach anyway.
Check this to read up on it.

The Antec High Current Pro750W, although is also of very good quality, has ball bearings which are always audible. Although the fan itself is pretty quiet at all loads.
Check here for numbers.

Bottom line what I'm trying to say is there are a lot of good PSU's out there, they're all different, some will slightly outperform one in one aspect but perhaps might underperform slightly in a different aspect. We could nit pick all day long but realistically minute differences between fan noises should hardly affect the decision making process. Just make sure it's reliable, well received, enough wattage for your needs and if you want ~ more efficient. (Efficiency can't be a bad thing eh?). That said, in terms of reliability everywhere I look I see guides and comparisons putting Seasonic way up there for gaming personal use at non-insane voltages.