PSU for RTX 3080ti is 850 good?

[Tazz 316]

I scored a RTX 3080ti, i have a 850 watt PSU is that enough power?

 

Specs

 

i9-9900k OC

H150i 360mm water cooler

7 fans

32GIGs of RAM

3 1TB SSD

a few USB devices.

[Tan3l6]

Well, 3080 Ti peaks at around 457W - https://www.techpowerup.com/review/nvidia-geforce-rtx-3080-ti-founders-edition/34.html

OC-ed 9900k about 250W - https://www.tomshardware.com/reviews/intel-core-i9-9900k-9th-gen-cpu,5847-11.html

Other parts don't take very much more than combined 50W at most.

 

So if it's a quality PSU it should be enough. If not a good PSU then probably not.

[BetteBalterZen]

850 watt is perfect for your build

[Tazz 316]

Just now, Tan3l6 said:

Well, 3080 Ti peaks at around 457W - https://www.techpowerup.com/review/nvidia-geforce-rtx-3080-ti-founders-edition/34.html

OC-ed 9900k about 250W - https://www.tomshardware.com/reviews/intel-core-i9-9900k-9th-gen-cpu,5847-11.html

Other parts don't take very much more than combined 50W at most.

 

So if it's a quality PSU it should be enough. If not a good PSU then probably not.

It's a corsair 850x

[Tan3l6]

Just now, Tazz 316 said:

It's a corsair 850x

RM850x is a good one, sure.

[Somerandomtechyboi]

3 minutes ago, Tazz 316 said:

i9-9900k OC

I see you are a man of culture

 

too bad cpu oc is pretty much dead so if you dont need extra cpu power then just undervolt it by running the highest freq you can on a low volt like 1.25 or 1.3v

 

5 minutes ago, Tazz 316 said:

I scored a RTX 3080ti, i have a 850 watt PSU is that enough power?

 

Just now, Tazz 316 said:

It's a corsair 850x

Yea thats gonna be more than enough

[jones177]

I have a i9 9900k/3080 setup(see below).

With the EVGA XC3 Ultra 3080 ti it uses about 550 watts from the wall stock. When it used a FTW3 Ultra 3080 ti it used 50 watts more.

 

By contrast my i9 10900kf/3080 ti setup has used 690 watts on the wall meter. 

 

I use 1000 watt PSUs because I had issues with two 850 watt PSUs with EVGA FTW3 Ultra 2080 tis. It could have been the cards or it could have been the motherboards since they were the same but 1000 watt PSUs fixed the problem.

 

 

 

[Alder Lake]

36 minutes ago, Tazz 316 said:

I scored a RTX 3080ti, i have a 850 watt PSU is that enough power?

 

Specs

 

i9-9900k OC

H150i 360mm water cooler

7 fans

32GIGs of RAM

3 1TB SSD

a few USB devices.

you'd be... cutting it close

 

if you already own the PSU, then you can test it out, if you notice any instability due to insufficient power, you can just buy a 1200w

[Tan3l6]

4 minutes ago, yesyes said:

you'd be... cutting it close

 

if you already own the PSU, then you can test it out, if you notice any instability due to insufficient power, you can just buy a 1200w

I'd still say RM850x peak would most likely suffice still. Given the numbers of Peak! power are very rare occasion.

If OP already has RM850x then there's no danger to other components even if the peak power would exceed 850W. No point going after a bigger "buffer" for now.

[Alder Lake]

Just now, Tan3l6 said:

I'd still say RM850x peak would most likely suffice still. Given the numbers of Peak! power are very rare occasion.

If OP already has RM850x then there's no danger to other components even if the peak power would exceed 850W. No point going after a bigger "buffer" for now.

If I were to make a guesstimate with you, I would go on a limb and say it should be fine, but I remember the LTT video where the 3090 peaked and tripped a 1000W PSU, so I wouldn't be surprised if there's some issues, but so long as there's no intense overclocking, it should be fine

[Tan3l6]

Just now, yesyes said:

If I were to make a guesstimate with you, I would go on a limb and say it should be fine, but I remember the LTT video where the 3090 peaked and tripped a 1000W PSU, so I wouldn't be surprised if there's some issues, but so long as there's no intense overclocking, it should be fine

Bit off topic, but what is the PSU in question?

[Alder Lake]

Just now, Tan3l6 said:

Bit off topic, but what is the PSU in question?

apparently a corsair 850x (time to do some research ig, lol)

[m9x3mos]

26 minutes ago, yesyes said:

apparently a corsair 850x (time to do some research ig, lol)

I am using the rm850x with a 9900k and 3090 founders card. Works perfectly fine. 

[Alder Lake]

Just now, m9x3mos said:

I am using the rm850x with a 9900k and 3090 founders card. Works perfectly fine. 

1000w PSUs have also been shorted with a 3090

 

then again, I think they were using an overclocked 11900k

[m9x3mos]

1 minute ago, yesyes said:

1000w PSUs have also been shorted with a 3090

 

then again, I think they were using an overclocked 11900k

Those draw more power I think. The wall draw on my system with the 9900k at 5 on all core and gpu with max power limit +100 core +500 on vram is about 740 watts peaks.

[Tazz 316]

Card comes today so we will see. Makes me wonder if i have enough 8 pin power connectors.

[jones177]

5 hours ago, Tazz 316 said:

Card comes today so we will see. Makes me wonder if i have enough 8 pin power connectors.

Even my 2016 vintage Corsair 850 PSUs had 4 8 pin connectors since they were for designed for SLI. 

 

 

[m9x3mos]

25 minutes ago, jones177 said:

Even my 2016 vintage Corsair 850 PSUs had 4 8 pin connectors since they were for designed for SLI. 

 

 

Only in this industry 2016 is vintage. Sorry, that made me laugh. 

[Tazz 316]

I have the card and it seems fine, i will have to try out my kill a watt meter.

 

BTW how does one get a better power cable for the GPU? I had to use two cables and it looks like a mess.

 

All i want is a black.

[Mister Woof]

On 11/5/2021 at 6:23 AM, Somerandomtechyboi said:

I see you are a man of culture

 

too bad cpu oc is pretty much dead so if you dont need extra cpu power then just undervolt it by running the highest freq you can on a low volt like 1.25 or 1.3v

 

 

Yea thats gonna be more than enough

Disagree

 

Most use cases (gaming) don't stress all-cores, and thus, even with a high OC, you're not pulling a ton of juice.

 

I'll take a 5.1ghz 9900k for gaming over a 4.7ghz one for the minimal amount of power consumption/heat difference in games. Especially with a 3080ti.

 

Undervolt/stock has its uses, like SFF. Otherwise, you're wasting potential.

[Somerandomtechyboi]

2 minutes ago, Mister Woof said:

Disagree

 

Most use cases (gaming) don't stress all-cores, and thus, even with a high OC, you're not pulling a ton of juice.

 

I'll take a 5.1ghz 9900k for gaming over a 4.7ghz one for the minimal amount of power consumption/heat difference in games. Especially with a 3080ti.

I guess the only thing it really benifits is temps

 

Well i run a 13 year old dual core and im not sure on power consumption cause every chip is different and some heat up more than others, my e5800 even at 1.7v only runs like 95c on my tower wheras my e8400 at 1.5v runs ~97c on my tower

 

Guess the only way to know power consumption is just buying a watt meter or something

[Mister Woof]

37 minutes ago, Somerandomtechyboi said:

I guess the only thing it really benifits is temps

 

Well i run a 13 year old dual core and im not sure on power consumption cause every chip is different and some heat up more than others, my e5800 even at 1.7v only runs like 95c on my tower wheras my e8400 at 1.5v runs ~97c on my tower

 

Guess the only way to know power consumption is just buying a watt meter or something

It's a pretty nifty device. I've used it on several occasions to test out different configurations. I have this kind:

 

[Mister Woof]

I use it to test my whole power strip - I've got 2 PCs in the same room and I need to know the peak power consumption on each circuit. I don't want to overload my wires and start a fire.

 

15amp circuit on my den, so I can't have more than ~1500w.

 

Gaming for me and the wife gets close...around 600w each power strip. Leaves little for LED lighting for the room.

 

We have a rule of "no printing" when gaming/rendering, because the laser printer itself pulls ~400w.

 

Oddly enough, I have undervolted my 3080 because of this. .960mv, 1800mhz curve, 85% power limit. This helps more than anything I could do CPU side.

 

Can't wait for a more powerful GPU to launch so I can get a 70-series card that pulls less power for the same performance. Then I can give the 3080 to my kid, which is on a different circuit.

 

For me (MMOs mostly) having a stronger CPU makes more sense; I probably should have got the 5600x/5800x instead of what I have. Oh well.

[Tazz 316]

The kill a watt shows 600-650 watts. With a full load.