Is 400w psu enough for fx 8320 and radeon hd 7850?

[alec_15]

My Build

CPU: AMD FX-8320
GPU: Powercolor radeon hd 7850 2gb
HDD: SATA 5.4k RPM
Disk Drive: N/A

I have used the power supply calculator at http://outervision.com/power-supply-calculator
My results are here http://outervision.com/b/UchErj
I want to use the power supply i currently have which is a 400w FSP Group atx.
The calculator says the reccomended is 368w so 400 should be fine correct?

 

[madmatt30]

What fsp model exactly ?? There are loads

If its the hexa or hexa + then yes.
You're only around 300w max usage with those components.

 

[Petrossa]

Would suggest at least a 500W for that setup.

 

[alec_15]

What fsp model exactly ?? There are loads

If its the hexa or hexa + then yes.
You're only around 300w max usage with those components.

sorry its an ATX-400PA

 

[alec_15]

Would suggest at least a 500W for that setup.

if i could afford it i would grab a 550w and be done with it lol the problem is im broke and i have this power supply from an old build

 

[madmatt30]

It'll just about cope.
Problem is it doesn't have a 6 pin GPU connector & the 7850 needs one.
You're going to have to use a molex adapter which I wouldn't normally recommend.

I've run a 7850 on a 300w dell PSU in the past in all fairness though , its a 110w max GPU , hardly a power hog.

 

[alec_15]

It'll just about cope.
Problem is it doesn't have a 6 pin GPU connector & the 7850 needs one.
You're going to have to use a molex adapter which I wouldn't normally recommend.

I've run a 7850 on a 300w dell PSU in the past in all fairness though , its a 110w max GPU , hardly a power hog.

it totally has a 6 pin connector lol.
also i am going to be running things like fallout 4 and dark souls 3 will that effect your answer at all?

 

[madmatt30]

Then it's a newer model than the old 2010 one.
That had a 348w 12v rail , I'd expect a newer model to have the same or more.
So no it won't affect my answer mate , you still won't pull more than 300w with an 8320 & a 7850.

 

[alec_15]

Then it's a newer model than the old 2010 one.
That had a 348w 12v rail , I'd expect a newer model to have the same or more.
So no it won't affect my answer mate , you still won't pull more than 300w with an 8320 & a 7850.

yes it does have a 348w 12v rail

 

[madmatt30]

Then you're all good.

 

[alec_15]

Then you're all good.

thank you sir ill get to building!

 

[alec_15]

Then you're all good.

oops one last thing... the psu only has a 4 pin connector where the mobo has an 8 that shouldnt be a problem though right?

 

[13thmonkey]

I wouldn't, and being skint just means it'll be harder to replace the damaged components.

 

[madmatt30]

A single 4 pin on a board running a 125w CPU is going to be a problem.
It may work, it may not, you may get bsod's under heavy load.
I'd argue the fsp's are fairly well made psu's , but the split 4+4 pins are there for a reason & that reason is to split the load on the cables.

The choice is your here , you're drawing 220-230w through just the 4 pin atx & 3 wires on the main 24pin.
That's a faily hefty amount if the cabling is low gauge.