How Much Wattage from a PSU for This Build I Need

[Jinn-Gon Qui]

https://pcpartpicker.com/list/Nxwr9W

I'm not talking about the 199W I see above on the top right. This includes GPU (GTX 970), which leaves room for GPU upgrade - and basically overclocking the CPU and RAM.

[Jinn-Gon Qui]

引用自 Patent：

you should always grab 100W more than is recomended for your gpu, so if recommended PSU for gtx 1060 is 400w, you should grab atleast 500W to be sure everything will work. Overclocking, LEDs, more fans eats power, also PSU is the most effective when it's power is being used for around 50-70%.

There are three fans (one of them being a LED), which is why the Gigabyte Motherboards offer three fan connecters on the board, so that's a good thing. And again, simply the overclocking features and a high-end GPU to upgrade in the future.

So what do you say about a 650W - like the one I mentioned above in my comments?

[Omega]

RM 550 or 650. doesn't matter, any of them will do fine. 650 if recommended if you will be going high-end later.

[PATENT]

引用自 Blazko Boy：

引用自 Patent：

you should always grab 100W more than is recomended for your gpu, so if recommended PSU for gtx 1060 is 400w, you should grab atleast 500W to be sure everything will work. Overclocking, LEDs, more fans eats power, also PSU is the most effective when it's power is being used for around 50-70%.

There are three fans (one of them being a LED), which is why the Gigabyte Motherboards offer three fan connecters on the board, so that's a good thing. And again, simply the overclocking features and a high-end GPU to upgrade in the future.

So what do you say about a 650W - like the one I mentioned above in my comments?

Recommended PSU for 970 is 500W, so 650W will handle your PC without any problems

Also you won't have to bother later with PSU when upgrading pc

[Aliquis Freedom & Ethnopluralism]

引用自 Patent：

you should always grab 100W more than is recomended for your gpu, so if recommended PSU for gtx 1060 is 400w, you should grab atleast 500W to be sure everything will work. Overclocking, LEDs, more fans eats power, also PSU is the most effective when it's power is being used for around 50-70%.

And why is that?
You don't figure Nvidia has already included a margin in their recommendation? ...

[PATENT]

引用自 Aliquis Freedom & Ethnopluralism：

引用自 Patent：

you should always grab 100W more than is recomended for your gpu, so if recommended PSU for gtx 1060 is 400w, you should grab atleast 500W to be sure everything will work. Overclocking, LEDs, more fans eats power, also PSU is the most effective when it's power is being used for around 50-70%.

And why is that?
You don't figure Nvidia has already included a margin in their recommendation? ...

Thats what I heard from IT specialist

[Jinn-Gon Qui]

引用自 Omega：

RM 550 or 650. doesn't matter, any of them will do fine. 650 if recommended if you will be going high-end later.

Isn't the i5-8600K, with 16GB RAM-3000/3200Mhz, and a possible GPU upgrade to a high-end tier, is high-end?

[Monk]

It's good and pretty high end, however with the 8700k above it, not to mention x299, 7800,7820,7900,7920,7960x and 7980xe also above it, it stops it from Being truly high end, saying that, properly overclocked it will match or beat the much more expensive x299 kit in the vast majority of games :)

[tacoshy]

引用自 Patent：

you should always grab 100W more than is recomended for your gpu, so if recommended PSU for gtx 1060 is 400w, you should grab atleast 500W to be sure everything will work. Overclocking, LEDs, more fans eats power, also PSU is the most effective when it's power is being used for around 50-70%.

intresting statement that makes no sense. First of all no GPU can sue up more then 375W because that would be the limitation of 2x8 ATX Pins.

Next, there plenty CPU's (literally every CPU) that will exeed 100W usage in OC'ed state.

Another thing is, that fans, Motherboard, HDD's and SSD's and RGB lightning aswell as USB Ports will use Wattage too.


=> There is no general rule how to chose the PSU. The safest rule would be to get the maximum theoretical power consumption (which you'll never reach anyway) or to relay on experience by ppl that actually measure wattage usage with a power meter.

[Aliquis Freedom & Ethnopluralism]

What you measure at the wall isn't the same as the PSU need to be at though.

At 230 volt EU internal non-redundant at 100% load the efficiency of a 80 plus gold PSU need to beat 89%, if we assume 90% efficiency then a 650 watt PSU (delivery) would pull 650/0.9 = 722 watt from the wall.

At 115 volt the numbers are worse with a requirement of 87% efficiency at 100% load for an 80 plus gold supply.

[Monk]

Thing is, systems don't pull anywhere near theoretical power draw if you simply add up the power of the individual components, the vast majority of consumer systems, so mid tier GPU mid tier cpu won't pull more than about 250-350w even overclocked.

It's only when you start throwing in top end cards, 1080ti's / titans / Vega 64's etc along with sli or xfire of said cards with high end CPU's, so 8700k's, i9's, threadripper level kit, that you will start pulling more when you begin to overclock.

450-500w if on a budget or 650w if you want to sit better in the efficiency curve is all most will ever need, to go beyond that, you need something crazy like my system, which at its highest I've seen pulls about 850w from the wall, but that's 11 fans, waterpump, 32GB of ram over 8 sticks, 6 ssd/HDD, sli power/shunt modded 1080ti OCd with a 7900x OCd to 4.8GHz (haven't tested the draw at 5GHz but I suspect it may pull 900w), which is essentially the components for two high end systems in one build, components use way less power than people think they will.

[⛧EyMi Mayhem⛧]

To make it short..

520-650w is a sweet spot for every system so far.
Exceptions high-end enthusiasts sli oc whatever builds, big server and so on.
If u need more w, u rly know why.

Just make sure it's a decent psu and not a budget crap or so.