Suggestions re PSU wattage I'd need please

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I've had a couple of problems with this build and I think a lot of them would be solved with a new power supply. Not sure what wattage I should go for though and moneys tight so I'm after the cheapest but also a quality one, so the least wattage I can get away with I suppose.

I've just "upgraded" to
APU:- AMD A10 6800K Black Edition 4.1GHZ APU (which "should" have a GPU Radeon™ HD 8670D; Latest DirectX 11.0 GPU clock speed 844 MHz)
Heatsink: Artic Freezer Pro 7 rev2
Motherboard:- Asus F2 A85-V Pro
Memory:- Corsair Vengeance Pro 2133Mhz 4x 4GB
Hard Drives:- Crucial SSD 240GB
Seagate barracuda 3TB Sata
Seagate Baracuda 2TB sate
Western Digital 750GB Sata
Western Digital 750GB Sata
Optical Drives:- 2 standard LG read write satas (not blueray)
System fans: 1 extra large rear (Its really large 120mm I think not sure) and 2x standard LED fans that run from either motherboard or old molex connectors.
Additional peripheral:- PCIe to SATA III & ESata controller card.

Originally I was using my OLD PSU - EVO Labs 720T its a 720watt dual rail that was fine and stable in my old FM2+ quad core system with Radeon HD6670. (okay its years old but when I was building that system that PSU had reasonable reviews plus it was stable and quiet for me)

However although it seemed that it worked fine at first for about four weeks, (although the motherboard would only read/allow memory speed at 1333mhz which i now believe was PSU related, but still was fine with turbo boosting the graphics and CPU speeds) it just failed to turn the system on one day (checked it with an XFX 750watt power supply the system started up just fine, but I didn't check it beyond 5 minutes, plus I then checked and the old power supply still works on the old system, so not sure if its just old and no longer reliable/stable enough for the new build, or if 720watts is insufficient)

Soooo I was wondering should I get a modern 750watt or do I need to increase to an 850watt PSU?

I will probably put a new graphics card in "eventually" (I haven't gamed in years beyond an Xbox, I keep saying I'm going to again but never seem to have time) as to be honest the graphics on this build suck for just video playback so no way I'd try middle level gaming which most reviews states it can handle. Which was why I got it not an FX8 - big mistake - But if do install an additional graphics card I'd probably either use my old HD6670 2GB card (which I'm told would work in crossfire mode with the graphics card built in to the APU) or upgrade to the R9 270 2GB card. So with this as a possibility do I need a 750watt or an 850watt PSU? :confused:

(I'm currently looking at either XFX core editions or the Corsair RM editions in PSU's but I'm open to suggestions.)

Please and thank you :)

[PS - for other builders if you get the black edition A10 the normal graphics drivers for the A10 6800K on AMD's site don't work and won't install, AMD's auto detect doesn't work. Nothing in AMD's data base about problems with black editions, AMD support is none existent, and still haven't got back to me, however I eventually found a link else where online to what was claimed to be special drivers for the black editions. It did lead back to AMD site, but I couldn't identify the drivers on that page it was just a download option. However those graphics installed and seem to work, but it might be why my Graphics quality currently suck compared to my old system - I'm still waiting on AMD support to clarify that :mad: ]
 
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lol

Seasonic G360 would power that with ease.

those 10 quid "750W" units would struggle.

you might get Superflower HX 450W to cover yourself, in case you want to add 270.
 
Welcome,

THe issue will be you're PSU showing its age.. It sounds on its way out, so you're right to replacing it now.

As for the wattage, you are thinking WAY WAY over the top..

As it is now (without a GPU) you'd hardly use 200W on Full load..

With a R9 270 (lets say), you'll still be around 300W-350W on full tilt.

A decnet 500W-550W PSU will be more than fine, id sugges tthis one: http://www.overclockers.co.uk/showproduct.php?prodid=CA-003-SF

Though it is out of stock crrently. :)
 
You are massively overestimating the amount of power you need. You could probably run your system in its current form from a 300W PSU with no issues!

The only bit that actually uses a substantial amount of power in your rig is the CPU and even that will top out at about 100W. In this review the entire rig was only pulling 150w whilst benchmarking Metro Last Light. http://www.tomshardware.co.uk/a10-6700-a10-6800k-richland-review,review-32702-11.html

If you decide to add a seperate GPU you will need a bit more power, but even with that a good quality 400-500W unit will be more than enough.

It's worth noting that I run the entire rig in my sig of a 760W PSU. I know I'm pulling less than 530W through it as it stays passive upto that point and I've never heard it's fan turn on. So this gives you an idea of just how much you are overestimating.

As suggestions for actual PSU's to buy, any of these four should be fine. I'll leave it upto you if you want the 450 or 550w variant, the amazon is a lower end product than the golden green, but any of these should suffice.

YOUR BASKET
1 x SuperFlower Golden Green HX 550W "80 Plus Gold" Power Supply - Black £59.99
1 x SuperFlower Golden Green HX 450W "80 Plus Gold" Power Supply - Black £53.99
1 x SuperFlower Amazon 550W "80 Plus Bronze" Power Supply £49.99
1 x SuperFlower Amazon 450W "80 Plus Bronze" Power Supply £39.95
Total : £213.52 (includes shipping : £8.00).

 
It does have the CPU utilisation at 90% by default so I've dropped that to 50% to get a reasonable idea but its come out at reasonable values for me

EDIT: It comes out at 360W for my system at 70% load (I'm not currently overclocking) and I have an i5 4670, Radeon 7870, 1x SSD, 1x HDD, 3x120mm fans and a 200mm LED fan (I put in a 250mm fan) and a DDC 1 pump. 360W isn't that far off my usage when playing something like lotro for instance. Its a bit over but at least it's handy as a guideline figure :)
 
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Hi thanks for all the help very much appreciated.

I like the sound of the superflower Golden Green definitely my favourite BUT its out of stock until the end of the month and I need a PSU asap.

1 x SuperFlower Golden Green HX 550W "80 Plus Gold" Power Supply - Black £59.99

so what would be the best alternative this one (which BinnsY says is a lower end product -thanks for the input by the way
1 x SuperFlower Amazon 550W "80 Plus Bronze" Power Supply £49.99

or this one:-
Corsair CS550M 550W Semi-Modular 80+ GOLD Certified Power Supply (CP-9020076-UK) £59.99

or even
OCZ OCZ-ZS550W-UK 550W ZS Series 550W 80+ Bronze PSU with 135mm Fan & single +12V Rail £49.99

Or any other suggestions thats currently either in stock or back in within a week??

Please and thank you
 
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