how much Watt do i need?

[dvr]

i'm buying

phenom II X3 720 BE 2,8 GHz
his hd 4670
2x2gb RAM
320 GB harddisk

could u suggest me, how much power do i need? (i'm newbie)
a. if i don't OC?
b. if i OC? (tell me the GHz and the Watt required..)

any suggestion is appreciated.
thx

 

[HOOfan 1]

As a newbie, you should know wattage rating is not the best measure of a power supply.

As long as you buy a good quality PSU, with at least 80% of its rated power available on the 12V rails then 350W should be enough for non-OCing. If you want to OC, then I would go for 400W+

 

[dvr]

how do i know if it has at least 80% of its rated power available on the 12V rails ?

 

[dvr]

oh yah, i'm buying this case:

http://www.gamezone.co.id/prod...f8df1ce1f1c2fcc8dcb4ca

Specification:
- 430Watt 20 + 4Pin Power Supply
- 4 USB Port
- Audio Port
- 4 Cooling Fan
- Power Cable
- Accessories
(this is quite inexpensive case..)
but i don't think the power supply is sufficient,,,

 

[CalvinHobbes]

Originally posted by: dvr
how do i know if it has at least 80% of its rated power available on the 12V rails ?

You need the detailed specs for this information. Personally, I would get a good high quality PSU that will be usable for a long time.

For example:
http://www.newegg.com/Product/...x?Item=N82E16817139005

 

[HOOfan 1]

Generally PSUs that come with cases, especially if the Case/PSU combo is cheap, are not a PSU you would really want to run your computer with.

You will know if the PSU has at least 80% of its power available for 12V by looking at the label, or a general breakdown of the rails.

There may be more than 1 12V rail and you generally cannot add the values together, but hopefully there will be a listing of the max combined rating for 12V power. It is usually rated in Amperes and Watts =Amperes * Volts so for example if you have a 350W PSU and it has 25A available for 12V power then it has 300W available for 12V power and 300/350=.857 or 85.7% of its power available for 12V.

 

[dvr]

Originally posted by: HOOfan 1
Generally PSUs that come with cases, especially if the Case/PSU combo is cheap, are not a PSU you would really want to run your computer with.

You will know if the PSU has at least 80% of its power available for 12V by looking at the label, or a general breakdown of the rails.

There may be more than 1 12V rail and you generally cannot add the values together, but hopefully there will be a listing of the max combined rating for 12V power. It is usually rated in Amperes and Watts =Amperes * Volts so for example if you have a 350W PSU and it has 25A available for 12V power then it has 300W available for 12V power and 300/350=.857 or 85.7% of its power available for 12V.

i see.. means i'll have to buy 3rd party psu..
1. btw, for oc, is 400 or 450 or 500 sufficient? (i never do OC but wanna give it a try.., and i am almost clueless about oc's power consumption.)

2. if i just oc the cpu, and if oc both the cpu n gpu, will it make difference in the powes supply needed?


thx for the quick reply

 

[HOOfan 1]

Yes OCing can make the computer pull a considerable amount more power than a non-OCed computer. OCing both CPU and graphics of course will make if pull more.

 

[dvr]

is http://www.sundialmicro.com/Si...50efplus_1950_797.html ok?

if thi one? http://www.bhinneka.com/products/sku00107774.aspx

and, what is 2x +12v and 1x +12v?

 

[HOOfan 1]

Both of those PSUs are fine, the Silverstone is the best though. If you are in the US though, you can get the Corsair VX550 for $90, which is better than both of those.

12V1 and 12V2 mean that the 12V source has been split into two different outputs. It is done for safety, in case a short circuit or some suck load tries to pull too much current from a single wire...which could melt the insulation and cause a fire. As I said earlier though, 99% of the time you cannot add 12V1 and 12V2 together to determine the entire 12V power.

 

[rarebear]

Need 500w-600w

Will you ever go SLI or Crossfire Dual Video Cards in the next 3-4 years???

Then you may want to spend $30-$40 more and get a 750w-850+ watts for future expansion.

 

[theAnimal]

Originally posted by: rarebear
Need 500w-600w

Will you ever go SLI or Crossfire Dual Video Cards in the next 3-4 years???

Then you may want to spend $30-$40 more and get a 750w-850+ watts for future expansion.

Did you even look at the chosen video card?

A good quality 400W+ PSU is plenty, including OCing and even 2 HD4670. Antec Earthwatts, Corsair or Seasonic would be good choices.

 

[dvr]

Originally posted by: theAnimal

Originally posted by: rarebear
Need 500w-600w

Will you ever go SLI or Crossfire Dual Video Cards in the next 3-4 years???

Then you may want to spend $30-$40 more and get a 750w-850+ watts for future expansion.

Did you even look at the chosen video card?

A good quality 400W+ PSU is plenty, including OCing and even 2 HD4670. Antec Earthwatts, Corsair or Seasonic would be good choices.

hm, so do u think with 400W or 500W, it's enough for this rig? and how long will the psu last in good condition?
phenom II X3 720 BE 2,8 GHz
his hd 4670
2x2gb RAM
320 GB harddisk
biostar ta790gx
LCD 19"
keyboard+mouse
speaker
(maybe oc-ing..) (haven't thought of 2x4670)

 

[theAnimal]

Your system won't use 250W even OCed, so 400-500W is plenty. BFG LS450 and Corsair VX450 both have a 5 year warranty.