Build Advice RM750X (2019) enough for 4080?

[avizacty]

I am within the next few months upgrading my GPU from a 1070 to a 4080 (which is pushing my budget very hard), and I still have a Corsair RM750X (the V2 from 2019) in that build. Do I need to get atleast and 850W psu or should I keep on to my trusty 750W one?

My PC parts are in this list, and it comes out at an estimated wattage of 670W in TDP
https://pcpartpicker.com/list/fy7yzf

I hear a mix of people saying get a new one and people saying 750W is enough, but I could use some help in my case because I honestly have no idea.. (It seems fine to me but I can't know for sure)

 

[dark_globe]

good news is RMx(2018) power supplies are one of the finest mainstream PSUs of the last decade .
rtx 4080 will consume around 300w while gaming ,
but 13600K is not so demanding - when it comes to gaming it only draws around 100w
taking the rest of your system into consideration your power consumption while gaming should be around 450-500w .
13600K only consumes around 200w in cpu demanding applications and stress tests
(but while doing them your gpu is not drawing 300w so you are fine either way)
you would have to simultaneously/deliberately stress your cpu and gpu to the max level to get anywhere near 650w power consumption .

yes generally speaking rtx 4080 and 13600K are pushing it a little bit closer to the edge but still not anything i would consider critical for your power supply .

in any case - upgrade your boot drive - that kingston A400 ssd is hopelessly slow and also small by todays standards .
get WD black SN770 1-2tb or kingston KC3000 1-2tb and make it your boot / primary drive .

 

[avizacty]

good news is RMx(2018) power supplies are one of the finest mainstream PSUs of the last decade .
rtx 4080 will consume around 300w while gaming ,
but 13600K is not so demanding - when it comes to gaming it only draws around 100w
taking the rest of your system into consideration your power consumption while gaming should be around 450-500w .
13600K only consumes around 200w in cpu demanding applications and stress tests
(but while doing them your gpu is not drawing 300w so you are fine either way)

yes it is pushing it a little bit closer to the edge but still not anything i would consider critical for your power supply .

in any case - upgrade your boot drive - that kingston A400 ssd is hopelessly slow and also small by todays standards .
get WD black SN770 1-2tb or kingston KC3000 1-2tb and make it your boot / primary drive .

Appreciate your thoughts very much.

Now, I am a cautious guy, would there be any danger of destroying any PC parts if the PC ever (out of the ordinary circumstance) decided to spike in wattage? I mean, what would the consequences be if say my RM750X somehow spikes 700W?

I would much rather wait even further and spend 200$ on a new PSU before upgrading (which seems very wasteful though) if it saves me from a 3000$ mistake, but I'm not very knowledgeable when it comes to power consumption and all that.

I'm all about wanting to know worst-case scenarios, but if it just means my PC will randomly shut itself of when spiking, I could wait for a new PSU..

 

[dark_globe]

Appreciate your thoughts very much.

Now, I am a cautious guy, would there be any danger of destroying any PC parts if the PC ever (out of the ordinary circumstance) decided to spike in wattage? I mean, what would the consequences be if say my RM750X somehow spikes 700W?

I would much rather wait even further and spend 200$ on a new PSU before upgrading (which seems very wasteful though) if it saves me from a 3000$ mistake, but I'm not very knowledgeable when it comes to power consumption and all that.

I'm all about wanting to know worst-case scenarios

750w is its rated power - which means it should be able to deliver 750w of continuous power at 50°C (not peak power , but continuous)
all good quality units are rater for "continuous power" at 40-50 degrees celsius .
(so it should handle even 700-750w with no issues even at high temperatures)
good power supplies are capable of delivering even 50-100w more than their rated power for the short periods of time .
even if you somehow throw something it can´t handle at it
it should shut itself down safely because at that point the OPP will be triggered .

 

[sonofjesse]

If it was me I would put a 1000 watt unit sell your old unit. MIN of 850.