Finalization for Build

[Edible21]

Hello guys,
Heres my build: http://pcpartpicker.com/p/1XTGv

My main concern is if my PSU can handle everything the system has..
399w is the estimated wattage in PCpartpicker, and my psu has 430 :s..

I already bought the PSU and my dad won't return it sadly :c
Do you guys think I should still get the 7870 or just get a 7850

EDIT: I WONT be overclocking

 

[itzdanielp]

A 430W PSU is cutting it real close, even without overclocking...

Does the PSU have the necessary power connectors? (2 6 pin PCIx power adapter)

Dropping from the 7870 to the 7850 won't really do much as far as power goes.

If you can't get a new PSU, you will just have to try it. It will work, but you may overtax the PSU during heavy loads.

 

[Edible21]

Will it do any harm to my system if I use this PSU ?

 

[PepitoTV]

If you're going to overtax the PSU, make sure it's a reliable one as a crappy PSU can take the entire system with it if something bad happens.

 

[Edible21]

I have the Corsair Cx430, is that considered good or bad?

 

[itzdanielp]

That is a decent CPU. But when you overload a CPU it is really up in the air with what happens. It could be that it just dies, or it could overload the voltage regulator and fry the system.

There aren't a lot of decent systems out there that you don't want at least a 650 watt PSU for.

 

[Edible21]

What would be your recommendation, since I can't get a new PSU.
Get a lower-end graphics card maybe?

 

[itzdanielp]

any GPU you get is going to be borderline.

You're in a tough spot. Can you wait a couple more weeks and save up some money to get a PSU as well?

 

[Edible21]

Hmm I could, but it's my dad.. I'm trying to convince him to return this PSU and get a better one..
He thinks this PSU can take it(idk why).

 

[itzdanielp]

yes, technically it can take it.

However, explain it to him in engine terms, it might help.

Just because you can redline an engine without it blowing up, doesn't mean you can redline an engine 24/7 and expect it to last years.

Just because the PSU can supply 430W doesn't mean you should let it draw 430W all the time. It won't last, and could take other components with it when it dies.

 

[Edible21]

Alrighty, I'll try to haha
Thanks for the help! This my first time building c:

 

[itzdanielp]

No problem.

Good luck! It's a lot of fun, although be careful... it can get addicting >_<

Feel free to post any other questions on here as they come up. There are a ton of knowledgeable people here!!

 

[Edible21]

Oh yeah! one more question.
What would be the recommended allowance in terms of wattage?

 

[itzdanielp]

For a build like that 650W or larger. You definitely don't need anything larger than 850W unless you are building a massive system.

 

[Edible21]

Oh I mean, for PSUs in general.

 

[Onus]

For a build like that, 500W-550W is plenty. This of course assumes a quality PSU. The Corsair CX line starts out good, but the non-modular ones contain inferior Samxon capacitors that don't like heat and are known to fail early. I would not redline a Corsair CX.
That said, I run a HD7870 in my rig, and even gaming, I don't think my system pulls 300W from the wall.
You might look at the GTX660. It's performance is almost as good as the HD7870, but it draws less power and only needs one PCIe power cable.

 

[Edible21]

Hmm.. Let's say if I use this PSU, will my system blow up or do something crazy?

 

[itzdanielp]

It shouldn't, but it's hard to guarantee.

 

[Edible21]

What do you think would likely happen ?

 

[itzdanielp]

It would run for a while (few weeks to a few years) then the PSU would die. When it died, it may or may not take other components with it.

 

[Edible21]

:s I don't think the risk is worth. So I'll see what I can do.