How much power does the 6900xt need ?

[chaotic_uk]

just got my hands on a powercolor 6900xt red devil but my psu is only 750w , which psu does it need for around £150 please ?

 

[cvaldes]

The TPU GPU database has a page for this card:

PowerColor Red Devil RX 6900 XT Specs

AMD Navi 21, 2340 MHz, 5120 Cores, 320 TMUs, 128 ROPs, 16384 MB GDDR6, 2000 MHz, 256 bit

www.techpowerup.com

that recommends a 700W PSU so you might be fine with your current equipment.

That said, some PSUs are better than others. Sadly you didn't bother to specify which one you currently own so people here can't really comment on that.

VideoCardz.net has a different opinion:

POWERCOLOR Radeon RX 6900 XT 16GB Red Devil | VideoCardz.net

VideoCardz.net Graphics Cards Database

videocardz.net

recommending 850W.

However if you consult the Powercolor corporate website for an authoritative answer -- rather than asking random Internet strangers on a Q&A forum -- you'll find this page:

Red Devil AMD Radeon™ RX 6900 XT 16GB GDDR6 - PowerColor

www.powercolor.com

which recommends 900W minimum for this card.

So it's basically your call based on which source you trust more. Naturally if you use a 750W PSU, you'll be running with a higher load percentage than on a 1000W PSU. Increased load relative to PSU capacity will mean more heat. More heat = higher fan speed = more noise.

Your PSU choice should also take into consideration other components in your chassis, specifically the CPU since that's usually the other power hungry component. If you choose to upgrade your PSU carefully consider future component upgrades (like increased CPU TDP). Personally I don't think it's worth stepping up from a 750W PSU to an 800W model. The more sensible upgrade would be to a 1000W model. I have no recommendations since I have never owned a 1000W PSU.

Best of luck.

 

[Imperator]

Actually he did. On system specs he mentioned :

Power Supply	EVGA 750W gold

Because you have gold series , that means that your PSU can deliver at his peak somewhere arround 87 to 90% from the power mentioned on it.
That means it will deliver arround 652 W on full load.
So i will recommend to buy a slightly better one.

 

[chaotic_uk]

The TPU GPU database has a page for this card:

PowerColor Red Devil RX 6900 XT Specs

AMD Navi 21, 2340 MHz, 5120 Cores, 320 TMUs, 128 ROPs, 16384 MB GDDR6, 2000 MHz, 256 bit

www.techpowerup.com

that recommends a 700W PSU so you might be fine with your current equipment.

That said, some PSUs are better than others. Sadly you didn't bother to specify which one you currently own so people here can't really comment on that.

However if you consult Powercolor (and their corporate website) for an authoritative answer -- rather than asking random Internet strangers on a Q&A forum -- you'll find this page:

Red Devil AMD Radeon™ RX 6900 XT 16GB GDDR6 - PowerColor

www.powercolor.com

which recommends 900W minimum for this card.

So it's basically your call based on which source you trust more. Naturally if you use a 750W PSU, you'll be running with a higher load percentage than on a 1000W PSU. Increased load relative to PSU capacity will mean more heat. More heat = higher fan speed = more noise.

Your PSU choice should also take into consideration other components in your chassis, specifically the CPU since that's usually the other power hungry component.

Best of luck.

many thanks for the info

 

[looniam]

Actually he did. On system specs he mentioned :

Power Supply	EVGA 750W gold

Because you have gold series , that means that your PSU can deliver at his peak somewhere arround 87 to 90% from the power mentioned on it.
That means it will deliver arround 652 W on full load.
So i will recommend to buy a slightly better one.

what?
no it can deliver 750 watts but pulls 750/.87= 862 watts from the wall.

 

[Imperator]

In order to deliver 750 yes it will draw 862.
Fair enough

 

[chaotic_uk]

just ordered this hope it is a good psu lol (just to be on the safe side)

 

[Imperator]

I believe you will have a good PSU.
But let's wait for more opinions.
(me personally i would but it)

 

[cvaldes]

Four reviews for Corsair RM1000X

Corsair RM1000x (2021) Power Supply Review

The Corsair RM1000x is one of the best Gold PSUs in this Wattage category.

www.tomshardware.com

"One of the best Gold PSU units in this wattage category." -Tom's Hardware

The Corsair RM1000x and RM1000i 1000W Power Supply Review

www.anandtech.com

"For those buyers who want a truly high performance PSU designed with low-noise operation in mind, the new RM1000 units are some of the best choices currently available." -AnandTech

Corsair RMx Series 1000 W Review

Corsair adds to its portfolio with yet another PSU line, the RMx series - the RMi line without the digital interface or an FDB fan in order to reduce cost. Today, we will test and compare the RM1000x to the competition in its category.

www.techpowerup.com

"Highly recommended." -TechPowerUp

Reviews Archive - OC3D

www.overclock3d.net

"Gold Award" -Overclock3D.net

My opinion: it appears to be a decent choice. Not sure if I would have chosen something else at this price point. I would have certainly looked at Seasonic ATX units though.

Evaluating PSUs requires specialized equipment and expertise: I have neither so I rely on reliable experienced reviewers for their insight.

Again I defer to more established sources than random Internet commenters for these types of recommendations.

 

[ThrashZone]

Hi,
Prime units seem to be popular.

 

[Imperator]

Again I will defer to more established sources than random Internet commenters for these types of recommendations.

Totally agree.

 

[GerKNG]

from my experience at least a higher end 1000W PSU if overclocked, 750W if not.
RDNA2 has insanely high transients (far beyond a 3090 into the 1000W Range)

 

[eidairaman1]

just got my hands on a powercolor 6900xt red devil but my psu is only 750w , which psu does it need for around £150 please ?

PowerColor Vanilla 6900XT is 850W Recommended, Red Devil 6900XT is 900W Recommended.

A High Quality PSU from Seasonic, SuperFlower will handle it, just remember the useage of all other components needs to be accounted for, a psu calculator will give you a general base line.

Do not skimp on the PSU.

Fyi you can go to card makers and find psu watts...

 

[Crash_Boat]

My 6900xt Reference runs on a 850 Seasonic and is happy.

 

[lowrider_05]

Just my 2ct, i run an 6900xt (XTXH) with no powerlimit (Morepowertools) and an 5900x with PBO and AutoOC, all on Water and my 750W Seasonic Prime TX has not once had a problem delivering the power needed which is around 650W Peak under full load for both CPU+GPU.
but a little remark: this PSU can handle up to 900W before shutting down.

concluding, i think your EVGA 750W PSU should be able to handle your system as well. But no guarantees!

 

[dont whant to set it"']

@chaotic_uk I'd say don't worry about it so much so with a bit of tweaking like undervolting and a tad reduced power limit would be best , at least it is for me. I've upgraded from a 5700XT , don't know what for because I didn't feel the need for extra performance per say while still at 1080p , but now with the 6900XT heavily underrun , it matches or outpaces the previous card , enjoying.

 

[Tetras]

just got my hands on a powercolor 6900xt red devil but my psu is only 750w , which psu does it need for around £150 please ?

According to igorslab's review it can spike up to 450-500 watts, but the average is around 300.

Is AMD getting the crown back? Radeon RX 6900 XT 16 GB review with benchmarks and a deeper technical analysis | Page 15 | igor´sLAB

AMD still has one left, and that’s what we have today. They want to take the competitive Radeon RX 6800 XT 16 GB one step further and so Dr. Lisa Su pulled a last ace out of her sleeve some time ago…

www.igorslab.de

 

[mama]

Try what you have now and you will know if you need to change up.

 

[chaotic_uk]

According to igorslab's review it can spike up to 450-500 watts, but the average is around 300.

Is AMD getting the crown back? Radeon RX 6900 XT 16 GB review with benchmarks and a deeper technical analysis | Page 15 | igor´sLAB

AMD still has one left, and that’s what we have today. They want to take the competitive Radeon RX 6800 XT 16 GB one step further and so Dr. Lisa Su pulled a last ace out of her sleeve some time ago…

www.igorslab.de

on powercolor's site it says it needs 900w+ lol

 

[Tetras]

on powercolor's site it says it needs 900w+ lol

Just to be clear, the figures in the review refer to the graphics card alone. And as said above, the PSU has to be built/designed to withstand these spikes, so a higher wattage is more likely to cope if it has greater headroom / components with more capacity and higher trips.

 

[eidairaman1]

on powercolor's site it says it needs 900w+ lol

Secret, Good PSUs are underrated, bad psus are overrated

 

[Aquinus]

which psu does it need for around £150 please ?

Your approaching the problem wrong. If you're spending enough to get a 6900 XT, you shouldn't skimp on the hardware that could kill the card if you push it too hard. Do yourself a favor and put just as much TLC into your PSU choice as your GPU choice. If I was getting a 6900 XT, I would be buying a 1kW PSU that's 80+ Gold or better. In fact, my Vega 64 and 3930k use a 1kW 80+ Platinum and after a decade, the PSU is still running strong even when I push the machine to its limits.

 

[eidairaman1]

What 750 W uni

Your approaching the problem wrong. If you're spending enough to get a 6900 XT, you shouldn't skimp on the hardware that could kill the card if you push it too hard. Do yourself a favor and put just as much TLC into your PSU choice as your GPU choice.

SS 650 W Focus Gold Retail was $180 at MicroCenter

 

[Aquinus]

What 750 W uni

SS 650 W Focus Gold Retail was $180 at MicroCenter

Check my ninja edit. I personally would use a 1kW with the 6900 XT just as I do for my Vega 64 and 3930k which can easily pull 700w off the wall and I've seen as much as 850w, granted most of that is the 3930k which is power hungry SOB.

 

[bug]

just got my hands on a powercolor 6900xt red devil but my psu is only 750w , which psu does it need for around £150 please ?

If you asked me 10-15 years ago, I would have said get a beefier PSU.

Today, just try the card with your current PSU, run some benchmarks. If it's stable, you're good. if you experience instability or shutdowns, the GPU needs more juice. It's that simple.