PSU Wattage

[neffemaxi]

Hey there. 

 

I know there are loads of PSU wattage calculators out there but when I bump in my numbers it tells me that the recommended PSU wattage is 582 Watts (50 Watts more than the Load wattage). I know that your PSU usage should be at about 80%. But after the calculator tells me which PSU wattage would be recommended it recommends me a 750 Watt PSU which would probably be a waist of money, right?

 

Looking forward to your answers, Thanks.

[seon123]

What are your specs? Generally, you should be looking at roughly half of what the "calculator" thinks it'll use. 

[Carz728]

What gpu do you have?

[STRMfrmXMN]

2 hours ago, neffemaxi said:

Hey there. 

 

I know there are loads of PSU wattage calculators out there but when I bump in my numbers it tells me that the recommended PSU wattage is 582 Watts (50 Watts more than the Load wattage). I know that your PSU usage should be at about 80%. But after the calculator tells me which PSU wattage would be recommended it recommends me a 750 Watt PSU which would probably be a waist of money, right?

 

Looking forward to your answers, Thanks.

What are your system specs? I can give you a pretty accurate ballpark of what the system will use with/without OC.

[Carz728]

right here https://ca.pcpartpicker.com/list/Jqrz7W

[Carz728]

Sorry wrong post.

[neffemaxi]

So I‘ll be using:

 

- Intel i5-8600k (OC‘d to ~5GHz)

- EVGA GTX 1070 Ti (OC‘d to ~1.7 GHz)

- 16 GB of DDR4-3000MHz RAM

- 1 optical drive and 1 card reader

 

Thanks

 

[neffemaxi]

3 hours ago, Carz728 said:

What gpu do you have?

1070ti

[seon123]

1 minute ago, neffemaxi said:

So I‘ll be using:

 

- Intel i5-8600k (OC‘d to ~5GHz)

- EVGA GTX 1070 Ti (OC‘d to ~1.7 GHz)

- 16 GB of DDR4-3000MHz RAM

- 1 optical drive and 1 card reader

 

Thanks

 

You should be looking at around 250-300W of power draw.

1,7GHz on desktop Pascal? That's quite a significant underclock

[neffemaxi]

3 hours ago, seon123 said:

What are your specs? Generally, you should be looking at roughly half of what the "calculator" thinks it'll use. 

I‘ll be running an i5-8600k (~5GHz), AIO Water cooler (240 or 280), 1070ti, 16GB DDR4-3000, optical drive and a card reader (if that makes a difference).

[neffemaxi]

2 minutes ago, seon123 said:

You should be looking at around 250-300W of power draw.

1,7GHz on desktop Pascal? That's quite a significant underclock

Well the stock speed is 1,6 and I really don‘t know alot about GPU overclocking. I know there is the NVidia boost that boosts it up to 2GHz but how high should I OC it then? 

 

And if I‘m drawing ~300W a 400W should be good, right?

 

[seon123]

7 minutes ago, neffemaxi said:

Well the stock speed is 1,6 and I really don‘t know alot about GPU overclocking. I know there is the NVidia boost that boosts it up to 2GHz but how high should I OC it then? 

 

And if I‘m drawing ~300W a 400W should be good, right?

 

If you offset the frequency, it changes the boost clock. Overclock to the point where the performance is the highest. That's not the same as the highest stable offset. 

A good 400W, yes. 

[neffemaxi]

6 minutes ago, seon123 said:

If you offset the frequency, it changes the boost clock. Overclock to the point where the performance is the highest. That's not the same as the highest stable offset. 

A good 400W, yes. 

And if I might throw in a second GPU in a year what would I be looking at? A 600W PSU? And will that really be enough to power a overclock to 5GHz on the CPU? Sorry I'm just super curious. And so does that mean that I should overclock the GPU to 2000MHz?

[seon123]

13 minutes ago, neffemaxi said:

And if I might throw in a second GPU in a year what would I be looking at? A 600W PSU? And will that really be enough to power a overclock to 5GHz on the CPU? Sorry I'm just super curious. And so does that mean that I should overclock the GPU to 2000MHz?

Ideally, you shouldn't really plan on getting a second GPU. Multi GPU support is going down, and it still comes with the usual issues. The problem with running multi GPU on ~550W PSUs is finding one with enough connectors, as most will have just 2x 6+2 pins. 

If you don't touch the GPU, it should hover around 2000MHz by itself. Use a monitoring tool to see what it runs at. 

[neffemaxi]

1 minute ago, seon123 said:

Ideally, you shouldn't really plan on getting a second GPU. Multi GPU support is going down, and it still comes with the usual issues. The problem with running multi GPU on ~550W PSUs is finding one with enough connectors, as most will have just 2x 6+2 pins. 

If you don't touch the GPU, it should hover around 2000MHz by itself. Use a monitoring tool to see what it runs at. 

Ok then, Thank you so much. gonna get a 400-450W one then. 

[seon123]

2 minutes ago, neffemaxi said:

Ok then, Thank you so much. gonna get a 400-450W one then. 

Just make sure to get a good one. The good ones that come to mind are the Focus Gold, Straight Power 11, Whisper M and Formula. The Pure Power 10 is also very decent. 

[neffemaxi]

1 minute ago, seon123 said:

Just make sure to get a good one. The good ones that come to mind are the Focus Gold, Straight Power 11, Whisper M and Formula. The Pure Power 10 is also very decent. 

Yup, will do! And again Thanks!