How big power supply

[Namaste]

How big power supply do you need for a i5 7500 and a Msi GeForce gtx 1060 6gb

[Skiiwee29]

500-550w would be optimal. 

[STRMfrmXMN]

1 minute ago, Namaste said:

How big power supply do you need for a i5 7500 and a Msi GeForce gtx 1060 6gb

6 big

 

In terms of wattage the two will use maybe 200W so a CX450M should be fine.

[KarathKasun]

I would say that you could likely scrape by with a 350w, but it would be close.

 

Really you will find that most quality PSUs are 450w+, with prices starting at ~$40 USD.

[seon123]

2 hours ago, legacy99 said:

500-550w would be optimal. 

That would be way overkill. He won't even draw half of that. 

1 hour ago, KarathKasun said:

I would say that you could likely scrape by with a 350w, but it would be close.

150W-ish of headroom is not close. It's plenty. 

 

To OP: Just get a decent PSU. Those start at ~400W. Something like the Pure Power 10 400W, CX450/M, Formula, TXM or Focus Gold. 

[KarathKasun]

28 minutes ago, seon123 said:

150W-ish of headroom is not close. It's plenty.

65w CPU + 150w GPU + 10-20w total fan consumption + 5w memory + 10w motherboard...

That is 75w headroom without a HDD or any other accessories.  Take another ~10w off for a HDD, down to 65w.

Consider that a 350w PSU does not put out 350w on the 12v rail, maybe 300w in the best case. Down to 40w extra capacity, or 15w if you go by the Antec basic "350w" PSUs 275w 12v output.  The other 75w is 5v and 3.3v.

 

So, as I said, it would be close.  Not to mention that many PSU's are most efficient at 50%-75% load.

 

Note to the OP, be careful of 400-500w power supplies that have more than two 12v amperage ratings on them.  You could end up with problems powering a GPU.

[seon123]

23 minutes ago, KarathKasun said:

65w CPU + 150w GPU + 10-20w total fan consumption + 5w memory + 10w motherboard...

That is 75w headroom without a HDD or any other accessories.  Take another ~10w off for a HDD, down to 65w.

Consider that a 350w PSU does not put out 350w on the 12v rail, maybe 300w in the best case. Down to 40w extra capacity, or 15w if you go by the Antec basic "350w" PSUs 275w 12v output.  The other 75w is 5v and 3.3v.

 

So, as I said, it would be close.  Not to mention that many PSU's are most efficient at 50%-75% load.

 

Note to the OP, be careful of 400-500w power supplies that have more than two 12v amperage ratings on them.  You could end up with problems powering a GPU.

The 1060 is a 120W card, overclocked , that's like 10-15W more. The CPU won't even run close to its rated TDP under a gaming load. The fans won't draw anywhere close to 10W, RAM won't draw anywhere near 5W, the motherboard won't draw anywhere near 10W and HDDs won't draw anywhere near 10W. I guess the front panel LEDs will draw 10W, according to you?

 

There's a difference between saying that 350W is close, and saying that a 350W PSU is close. One is power draw, the other depends on the PSU model. The 350W Pure Power 10 can output 336W on the 12V rails. 

 

So not close at all. And the difference in efficiency between a 50% load and a 100% load is 3%. That's nothing. Especially with a 1060 system. 

 

Multi rail PSUs that aren't total crap can output ≥20A on each 12V rail. That's twice what you need for a 1060. And with more decent ones, you get more. 

[KarathKasun]

8 hours ago, seon123 said:

The 1060 is a 120W card, overclocked , that's like 10-15W more. The CPU won't even run close to its rated TDP under a gaming load. The fans won't draw anywhere close to 10W, RAM won't draw anywhere near 5W, the motherboard won't draw anywhere near 10W and HDDs won't draw anywhere near 10W. I guess the front panel LEDs will draw 10W, according to you?

 

There's a difference between saying that 350W is close, and saying that a 350W PSU is close. One is power draw, the other depends on the PSU model. The 350W Pure Power 10 can output 336W on the 12V rails. 

 

So not close at all. And the difference in efficiency between a 50% load and a 100% load is 3%. That's nothing. Especially with a 1060 system. 

 

Multi rail PSUs that aren't total crap can output ≥20A on each 12V rail. That's twice what you need for a 1060. And with more decent ones, you get more. 

Im taking power numbers from parts laying on my desk...

 

The MB has the PCH (6w alone link), audio, networking, as well as other misc crap that draws power.  10w is actually right on the money for MB power draw.

Each fan is likely to draw ~3w if its a fairly quiet one (0.25A on the label).  Stock Intel CPU fans can pull ~6w alone (0.5A on the label). That is ~10w with two fans.

5400 RPM HDD, ~6w on 12v (0.5A on the label) and 7200 RPM is closer to 9-10w (0.85A on the label link).

DDR4, 8gb pulls 3w and 16gb uses 6w. (link)

GTX 1060 FE pulls ~120w, a custom card can easily do 130-150w using OC profiles. (link)

 

What is it you were saying?  That you don't know what power consumption numbers look like?

 

And why would someone spend more than $25 on a 350w PSU?  Everything in the reasonable range for ATX 350w power supplies ends up with the same design as the Antec, 276w max on 12v with ~10A on 12v1 and ~13A on 12v2.  Better 350w units are in the $60+ range, where a decent quality 500w (single 12v rail @ 40A) unit is only ~$40.