Is 450W SMPS enough for this build? Urgent help

Toggle sidebar Toggle sidebar
Y

yogesh_gamer

Honorable
May 26, 2013
97
0
10,630
I am going to purchase a new PC. I am on tight budget so i need urgent help.
Is Corsair VS 450 SMPS enough for this build?
CPU: Intel i5 3570 (k or may not be k)
Mobo: Gigabyte B75M D3H
RAM: 2X4GB RAM
HDD: Seagate 1 TB
GPU: Nvidia GTX 760 (Not decided which manufacture, depends on availability)

I asked this ques before, but my frnd told me 450 is more than enough.
And hey i dont want to do SLI or overclocking in future.
plz reply me asap.
 
Solution
nukemaster
On paper, you should be ok.

At load a moderately factory overclocked 760 will run about 150-180(PEAK) watts
Add another 80 or so for the cpu.
10 for a hard drive
60 for everything else(chances are it will not even take that much). MATX boards are not power hungry most of the time.

This puts you are 330 watt of the 396 available. Lucky for you, things are rarely run at 100%.

As long as you ensure you will NOT be overclocking or running multi cards, your system should be ok.

If you ever want to know EXACTLY what a pc is using, you can use a power monitor from the hardware store(Kill-a-watt/UPM energy monitor). With a power monitor you will be seeing higher numbers because you loose some power in the power supply it self. The power...
Sort by date Sort by votes
nukemaster

nukemaster

Titan
Nov 23, 2004
19,626
6
74,965
On paper, you should be ok.

At load a moderately factory overclocked 760 will run about 150-180(PEAK) watts
Add another 80 or so for the cpu.
10 for a hard drive
60 for everything else(chances are it will not even take that much). MATX boards are not power hungry most of the time.

This puts you are 330 watt of the 396 available. Lucky for you, things are rarely run at 100%.

As long as you ensure you will NOT be overclocking or running multi cards, your system should be ok.

If you ever want to know EXACTLY what a pc is using, you can use a power monitor from the hardware store(Kill-a-watt/UPM energy monitor). With a power monitor you will be seeing higher numbers because you loose some power in the power supply it self. The power supply is rated on the OUT not the IN. so seeing 450 would not mean the pc is using 450, but if you saw that, your should look for a bigger power supply :)

I think you will rarely see 350 at the wall with your system.
 
Upvote 0 Downvote
Solution
Y

yogesh_gamer

Honorable
May 26, 2013
97
0
10,630


R u sure? can i go with 450? I don't want any trouble later. But its clear i dont want to overclock or SLI never in future.
what is d meaning of "330 watt of the 396 available"?
 
Upvote 0 Downvote
nukemaster

nukemaster

Titan
Nov 23, 2004
19,626
6
74,965
The power supply has more than 1 voltage.

Now the most demanding parts draw from the 12 volt rail. The 12 volt rail on the VX 450(or at least the one they sell here in Canada is 33amps 33 x 12 = 396)

They also seem to have a 240 volt ONLY model with 12 watts more on its 12 volt rail.

In a power supply, some of the lower rails are also powered from the 12 volt rail. so heavy use of 5v and 3.3v can reduce the overall 12 volt rail as well.

I would like to give you an example.

Gigabyte H55N-USB3
i5 750 undervolted as much as I can to reduce power/heat
MSI GTX 650ti pe(slightly factory overclocked)
3TB WDC Red
1TB WDC Blue(2.5 inch notebook version)
M4 128gigabyte SSD

Now that system has a video card that requires less power. Average 70 watts in games 85 MAX.

The point is that from the wall it rarely pulls over 150 watts and at idle is pulling about 40.

I am going purely on paper about your system, but from my own experience, computers do not take that much power without lots of extra hardware and overclocking.

I can get some numbers from my 2600k(@ 4.4) + GTX 670 card system next time I use it to give you an idea.
 
Upvote 0 Downvote
Y

yogesh_gamer

Honorable
May 26, 2013
97
0
10,630
to be honest, i cant understand. its like u r talking in some alien's language.
But as u said 450w will be enough. Den ok. :)
But i read on nvidia website there was written "Minimum Power Requirement 500W".
What does tat mean?
 
Upvote 0 Downvote
nukemaster

nukemaster

Titan
Nov 23, 2004
19,626
6
74,965
They recommend for a full loaded system.

My GTX 650 ti recommends a 400 watt and has run fine of a 300 watt(22amp 246 watts on 12 volt).

If you have the power supply already, please ensure it has TWO 6 pin pci-e connectors(I ask this because they seem to have 2 version of that power supply. a 120-240 volt version and a 240 volt only.).

Do you think Corsair would add those cables if the power supply was not made to run a card needing them?

Sorry my post was not easy to understand.
 
Upvote 0 Downvote
Y

yogesh_gamer

Honorable
May 26, 2013
97
0
10,630


sorry.. i really cant understand.. take a look here and temme..
http://www.corsair.com/us/power-supply-units/vs-series-power-supply-units/vs-seriestm-vs450-450-watt-power-supply.html
 
Upvote 0 Downvote
nukemaster

nukemaster

Titan
Nov 23, 2004
19,626
6
74,965
That website shows it having 2 pcie cables(to power a video card) and 408 watts on its 12 volt rail.

It honestly all looks like it should work without issues.

Here is a FULL system test with a faster(more power hungry cpu)
http://www.legitreviews.com/article/2223/13/
and another
http://www.hardocp.com/article/2013/06/25/msi_n760_tf_2gd5oc_gtx_760_video_card_review/8

So long as you do plan to add fancy setups, things should be fine.
 
Upvote 0 Downvote
hefox

hefox

Distinguished
Jan 24, 2007
798
0
19,060
That Corsair is NOT a great PSU and I wouldn't buy. If you compare it for example Seasonic G-450W which has 45A on the 12V rail, the Corsair one has only 34A which says a lot, not to mention it's barely a 80 plus psu and I wouldn't trust it on long term usage.
 
Upvote 0 Downvote
nukemaster

nukemaster

Titan
Nov 23, 2004
19,626
6
74,965

How does a 450 watt power supply have 540 watts(45a x 12v = watts) on its 12 volt rail? It has 37 amps(the 550 watt has 45 amps).
80+ is about efficiency not longevity. A linear power supply would suck tons of power to do the same job as a switching unit, but this does not mean it would die faster(or even fit in a pc case). That is all down to the design.

I am not going to deny Seasonic does make some of the best power supplies on the market so at least some of the info was not wrong.
 
Upvote 0 Downvote
hefox

hefox

Distinguished
Jan 24, 2007
798
0
19,060

Check this http://hardwareinsights.com/wp/corsair-vs450-review/3/ many low quality capacitors and voltage regulation not great which means that on long term you can have a lot of problems.
You are right about the Seasonic. I was looking on http://www.scan.co.uk/products/450w-seasonic-g-450-modular-80-plus-gold-eps-12v-12cm-silnt-fan-atx-psu and they say it's 45A but I have a feeling they are referring to the 550W PSU not 450W.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom