How many watts would I need for a 5600x and rx 6800xt system?

[GamingSeargent]

Basically the title. in case it is needed below is the build list. (I am aware of the pinned message, but it is currently not update with the cpu and gpu I have chosen.)

PCPartPicker Part List

Type	Item	Price
CPU	AMD Ryzen 5 5600X 3.7 GHz 6-Core Processor	$523.00 @ Kogan
CPU Cooler	Cooler Master MasterAir MA410M 53.38 CFM CPU Cooler	$87.46 @ Amazon Australia
Motherboard	MSI MAG B550 TOMAHAWK ATX AM4 Motherboard	$249.00 @ Umart
Memory	G.Skill Trident Z RGB 16 GB (2 x 8 GB) DDR4-3600 CL18 Memory	$147.40 @ Newegg Australia
Storage	Samsung 970 Evo 1 TB M.2-2280 NVME Solid State Drive	$179.00 @ Computer Alliance
Storage	Seagate Barracuda Compute 2 TB 3.5" 7200RPM Internal Hard Drive	$83.60 @ Newegg Australia
Video Card	Sapphire Radeon RX 6800 XT 16 GB Video Card	$1039.00
Case	Fractal Design Meshify C ATX Mid Tower Case	$139.70 @ Newegg Australia
Power Supply	Corsair RM (2019) 650 W 80+ Gold Certified Fully Modular ATX Power Supply	$168.00 @ Device Deal
Operating System	Microsoft Windows 10 Pro Full - USB 32/64-bit	$20.80
Case Fan	Cooler Master MasterFan MF Halo 47.2 CFM 120 mm Fan	$29.00 @ Austin Computers
Case Fan	Cooler Master MasterFan MF Halo 47.2 CFM 120 mm Fans 3-Pack	$68.00 @ JW Computers
Monitor	Asus TUF Gaming VG27AQ 27.0" 2560x1440 165 Hz Monitor	$619.00 @ Skycomp Technology
Keyboard	Corsair K68 RGB Wired Gaming Keyboard	$159.00 @ Amazon Australia
Mouse	Logitech G502 Proteus Spectrum Wired Optical Mouse	$104.80 @ Device Deal
Headphones	Corsair HS50 PRO STEREO Headset	$95.70 @ Newegg Australia
Custom	Corsair CH-9000108-WW Gaming MM300 Anti-Fray Cloth Gaming Mouse Mat - Extended	$49.00 @ Mwave Australia
Custom	Cooler MFX-AWHN-3NNN1-R1 Master 1-to-3 ARGB Trident Fan Splitter Cable (Avail: In Stock )	$15.00
	Prices include shipping, taxes, rebates, and discounts
	Total	$3776.46
	Generated by PCPartPicker 2020-12-02 19:22 AEDT+1100

 

[GoodEnough]

a 650w is plenty, but its always nice to have a 700w or 750w so you feel more confident in your psu

[Ankh Tech]

as I told you, get an rm750 or x, you'll save lots of money on the electricity bill, by buying a higher wattage psu, they run more efficient at lower usage, get a 750w

[Mateyyy]

1 minute ago, Ankh Tech said:

as I told you, get an rm750 or x, you'll save lots of money on the electricity bill, by buying a higher wattage psu, they run more efficient at lower usage, get a 750w

...you're joking, right?

[Ankh Tech]

Just now, Mateyyy said:

...you're joking, right?

well, if you buy a higher wattage psu you'll run more efficient. Not beaucuse it is a 750w psu that means it will always output 750w when not needed. Energy doesn't disappear  when not needed. It just produces less power. So more efficient, means less power draw from the main, and less money paid

[Elisis]

Just now, Ankh Tech said:

you'll run more efficient

Sure. Maybe 1% more efficienct, max. So literally nothing to be concerned about.

[Ankh Tech]

Just now, Elisis said:

Sure. Maybe 1% more efficienct, max. So literally nothing to be concerned about.

could be bigger difference, based on how good is the psu and how much power is drawn. So at very low power consumption, aka idle, it might make a difference

[Elisis]

1 minute ago, Ankh Tech said:

could be bigger difference, based on how good is the psu

The better the PSU, the less it makes a difference usually  

1 minute ago, Ankh Tech said:

So at very low power consumption, aka idle, it might make a difference

At very low power consumption, buying a higher wattage power supply will decrease your efficiency  

[XR6]

2 minutes ago, Ankh Tech said:

could be bigger difference, based on how good is the psu and how much power is drawn. So at very low power consumption, aka idle, it might make a difference

I doubt it, usually there's very little difference, if any, so it isn't worth the extra money spent on the 750W. The PSU in OP's pcpartpicker list is fine as it is. Getting a 750W PSU will make little to no difference in everything, not just power efficiency.

[Ankh Tech]

1 minute ago, Elisis said:

At very low power consumption, buying a higher wattage power supply will decrease your efficiency  

really, so at middle power consumption is more efficient, because I read something like 50 %- 60% is most efficient, is that true

[Ankh Tech]

then ignore what I said and listen to @Mateyyy@Elisisand @XR6, you'll be fine

[Elisis]

Just now, Ankh Tech said:

because I read something like 50 %- 60% is most efficient, is that true

More like it hits the max efficiency ~30%, and stays at that value for most of the rest of the wattage range.
 

[seon123]

3 minutes ago, Ankh Tech said:

really, so at middle power consumption is more efficient, because I read something like 50 %- 60% is most efficient, is that true

I don't know, if only there were about a billion PSU reviews you could check out to find out how wrong you are... Oh wait...

https://www.tomshardware.com/topics/power-supplies/reviews

https://www.techpowerup.com/review/?category=Power+Supplies&manufacturer=&pp=25&order=date

https://www.cybenetics.com/index.php?option=power-supplies

[Mateyyy]

9 minutes ago, Ankh Tech said:

really, so at middle power consumption is more efficient, because I read something like 50 %- 60% is most efficient, is that true

 

 

Anyway, to come back to OP's question (@GamingSeargent), 650W would be fine for those components.

 

To comment on the specific unit, the RM is good, though Super Flower's Leadex III 650W looks to be available for slightly cheaper, and I'd say it's at least just as good as the RM: https://au.pcpartpicker.com/product/VbhmP6/super-flower-leadex-iii-gold-650-w-80-gold-certified-fully-modular-atx-power-supply-sf-650f14hg

Either unit should work fine for your parts though.

[Stahlmann]

Any good 650W unit or higher will be able to easily handle this system. Some good options are:

 

Corsair RMx 650W (2018)

Enermax Revolution D.F.

The Superflower unit @Mateyyymentioned.