Sign in with
Sign up | Sign in
Your question

Can 500w powersupply support my build?

Last response: in Components
Share
January 16, 2013 6:32:01 PM

CPU: i5 3570k
CPUFAN: corsair h60
GPU: radeon hd 7870
RAM: 8gb g.skill ripjaws
HD: 1tb western digital
ROM: asus 24x
a c 1167 ) Power supply
January 16, 2013 6:56:07 PM

For a system using a single reference clocked Radeon HD 7870 GHz Edition graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 28 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

You may find power supplies on the market that supply more than enough Wattage to run the system. However, some of them lack Sufficient Amperage capacity on the critical +12 Volt rail, which is necessary to properly power the critical components in the system (i.e. CPU and GPUs). This is the reason why graphics card manufacturers may overstate the power supply wattage, usually by at least 50 Watts, in an attempt to take into account some of those power supplies that have the weaker +12 Volt rail(s).

Example:

The Corsair Builder Series CX500 ( SKU# 75-001667 / CP-9020047 ), with its maximum combined +12 Volt continuous current rating of 38 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single Radeon HD 7870 GHz Edition graphics card.
m
0
l
a b ) Power supply
January 16, 2013 7:31:04 PM

If you get a decent one.

Here is a list of the best PSU series. I recommend either getting one from tier 1 or 2.

http://www.eggxpert.com/forums/thread/323050.aspx

Also, it is always best if you get a little too much power, if you plan on getting more HDDs, SSDs, fans or a new CPU cooler or even upgrading in the future, then it would be nice if you didn't need to get a new PSU.

I recommend this PSU

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

It has the same price of the 650 watt PSU of its series right now.

Here is a little review of it:

http://www.overclockersclub.com/reviews/xfx_core_editio...

- "The XFX Pro Series Core Edition power supplies performed very well across the range."

- "The XFX Pro series power supplies are, as you’d expect, physically alike across the range and with good build quality and their unique styling will probably appeal to many enthusiasts. If you are in the market for a high quality wired power supply, at a fair price, then I highly recommend any of the XFX Pro Series Core Edition units."

- "If the intended build involves powerful graphics cards, multiple hard disk drives, cooling fans, etc and a certain amount of overclocking, the PRO750W or PRO850W would be a more sensible choice."

m
0
l
Related resources
a c 243 ) Power supply
January 16, 2013 8:05:27 PM

greenonion01 said:
Can 500w powersupply support my build?
Easily
greenonion01 said:
CPU: i5 3570k
CPUFAN: corsair h60
GPU: radeon hd 7870
RAM: 8gb g.skill ripjaws
HD: 1tb western digital
ROM: asus 24x

With no overclocking you're looking at a 220-230 watt max DC load, that is running Prime 95 and Furmark or OCCT PSU, any good quality 450 watt power supply with dual pcie connectors would do
HD's, have to add a few before it matters
SSD's are about meaningless as far as power consumption, unless you were to add a half dozen or so
CPU aircoolers are also pretty meaningless, 3 or 4 watts for a fan, 6-8 for 2, unless you like using Delta screamers

Guys getting all kooky with power reccomendations
"a little extra isn't a bad thing"
3 x as much as you need is silly
m
0
l
a b ) Power supply
January 16, 2013 8:14:21 PM

delluser1 said:
Easily

With no overclocking you're looking at a 220-230 watt max DC load, that is running Prime 95 and Furmark or OCCT PSU, any good quality 450 watt power supply with dual pcie connectors would do
HD's, have to add a few before it matters
SSD's are about meaningless as far as power consumption, unless you were to add a half dozen or so
CPU aircoolers are also pretty meaningless, 3 or 4 watts for a fan, 6-8 for 2, unless you like using Delta screamers

Guys getting all kooky with power reccomendations
"a little extra isn't a bad thing"
3 x as much as you need is silly


Easily? I disagree. It depends on the effiency of the PSU, not only the watt number.

The only "futureproofing" you can do is to get a great PSU and a nice case. So why not get a great PSU now, so he don't need to buy another one in a year or so, if he would like to upgrade?

m
0
l
a c 243 ) Power supply
January 16, 2013 8:24:29 PM

lostgamer_03 said:
Easily? I disagree. It depends on the effiency of the PSU, not only the watt number.

Disagreeing is your right, won't change the facts
Efficiency has nothing to do with it, 12v output does
m
0
l
a b ) Power supply
January 16, 2013 8:29:52 PM

delluser1 said:
Disagreeing is your right, won't change the facts
Efficiency has nothing to do with it, 12v output does


Then you should mention it, just saying that a 500 watt PSU can power a system of this caliber is wrong. Then it comes to the quality, not all 12v lives up to its specs, so you have you be cautious of what you buy.
m
0
l
a c 243 ) Power supply
January 16, 2013 8:35:18 PM

lostgamer_03 said:
Then you should mention it, just saying that a 500 watt PSU can power a system of this caliber is wrong. Then it comes to the quality, not all 12v lives up to its specs, so you have you be cautious of what you buy.

ko888 had already provided an example to go by
If you reread my post you'll see that I stated that a "good quality" 450 watt psu would do, you won't find any of the regulars reccomending Raidmax or the like
m
0
l
!