[SOLVED] Would it be safe to run the RX 5700 with 450W PSU ?

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Elight77

Elight77

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Dec 4, 2019
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Components

CPU
AMD Ryzen 7 3700X 3.6 GHz 8-Core Processor

CPU Cooler
AMD Wraith Max 55.78 CFM CPU Cooler

Motherboard
MSI B450-A PRO MAX ATX AM4 Motherboard

Memory
Corsair Vengeance RGB Pro 16 GB (2 x 8 GB) DDR4-3200 Memory

Storage
Western Digital Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive
Samsung 860 Evo 250 GB 2.5" Solid State Drive

Video Card
XFX Radeon RX 5700 8 GB DD Ultra Video Card

Case
SHARKOON TG5 ATX Mid Tower Case

Power Supply
Corsair CXM (2015) 450 W 80+ Bronze Certified Semi-modular ATX



Do you guys think it's safe to run the RX 5700 with the Corsair 450W PSU ?

I bought the other parts except the PSU which I already have.
What do you think guys?
 
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SkyNetRising said:
You'll be fine with this one:
Seasonic S12II-620
Click to expand...

I'd be loath to use that one - it was good in its day, but less appropriate for modern systems in terms of how it provides/regulates power and responds to load.

Elight77 said:
I found this unit for an ok price, is it any good?

Be quiet! PURE POWER 11 | 500W PC power supply
Click to expand...
I don't know, Be quiet is a mixed bag, some good, some bad, and I don't personally have any particular information for that model, so, I'd probably avoid it.

Elight77 said:
After some help online I found that the peak power consumption of my build is well below of what my psu is capable of. Beside that the Corsair CX450M that I have is new (a gift from a friend) and is good enough in term of build quality.

I think the...
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I personally would NOT use a 5700 with anything less than a 550 W PSU.
Your 450 W PSU might be able to handle it, If it actually supplies the full 450W (many PSU's don't even come close to their advertised wattage) and is a quality unit that has good ripple suppression and supplies stable power and current.

If your PSU doesn't supply the needed power and current you risk killing it and possibly other components as well.

I bought a Corsair RM650 for my 3700x / RTX 2060 Super build just to be on the safe side.
 
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I would absolutely NOT trust a 5700 on a 450W PSU.
The 5700 uses around 300W (or more) under full load.
And if that PSU is anywhere near it's 3 year warranty, I would definitely NOT use it with a 5700.

IMO you need to get a good quality 550W or better yet a 650W PSU for that PC.
Do you really want to risk all those new components by using an old low power PSU.

Also:
With all of that said, there are solutions to the CS450M's limitations. 150-225W cards are increasingly using a single 8-pin connector instead of two 6-pin connectors (e.g. GeForce GTX 960/970). So this is likely a bigger problem in the present than the future, as the CS450M is able to drive those newer 8-pin designs. Meanwhile, adapters can be had to convert a couple of Molex connectors to a PCI Express connector for only a few dollars, with several manufacturers throwing in those adapters with their mid-range cards. Alternatively, one can split off the single 6+2 pin connector, though these are potentially risky as the current can surpass the threshold of a single PCI Express connector if used to drive a card designed for over 225W. In either case it is not impossible to build a very good gaming system powered by the CS450M, yet it pushes the user to either select a proper mid-range card or use an adaptor at the expense of two Molex connectors.
Click to expand...
From here:
https://www.anandtech.com/show/9343/the-corsair-cs450m-psu-review/5

I personally bought a Corsair RM650 for my 3700x/RTX 2060 build just to be on the safe side.
 
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Elight77 said:
Corsair CXM (2015) 450 W 80+ Bronze Certified Semi-modular ATX
Click to expand...

No - first, the CX/CXM are the "ok if you can't get anything better" level of power supplies.

But second, the 2015 is the older version. I believe it's the 2017-later ones that fall into the acceptable range.

There's a link in my sig that goes into detail with recommendations.

DMAN999 said:
I would absolutely NOT trust a 5700 on a 450W PSU.
The 5700 uses around 300W (or more) under full load.
And if that PSU is anywhere near it's 3 year warranty, I would definitely NOT use it with a 5700.

IMO you need to get a good quality 550W or better yet a 650W PSU for that PC.
Do you really want to risk all those new components by using an old low power PSU.

Also:

From here:
https://www.anandtech.com/show/9343/the-corsair-cs450m-psu-review/5

I personally bought a Corsair RM650 for my 3700x/RTX 2060 build just to be on the safe side.
Click to expand...


In agreement on all this, except for one point I'm a little confused about - does the non-XT really draw that much power? Or did you mean the XT version? If the non-XT, can you link? I remember reading here and there that the XT can get thirsty, but I didn't know the non-XT would be that bad.
 
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Elight77 said:
I already exhausted all my budget buying all the parts, so it would be great if that psu is enough for my build. HELP! 😛
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What help do you expect?
Somebody comes and says, 450W PSU is enough and then your pc catches fire and explodes?
That would be a great help. 😊

Well .. Corsair CXM 450W 80+ probably wouldn't explode. You'll just get pc shutdown in middle of your gaming session.

Anyway - XFX recommends 600W PSU minimum.
https://www.xfxforce.com/gpus/radeon-tm-rx-5700-dd-ultra-8gb-gddr6
 
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After some help online I found that the peak power consumption of my build is well below of what my psu is capable of. Beside that the Corsair CX450M that I have is new (a gift from a friend) and is good enough in term of build quality.

I think the CX450M can't handle an rx 5700 xt gpu but an rx 5700 will do fine. I'm not planning to overclock my XFX Radeon RX 5700 or anything.
 
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Elight77 said:
Components

CPU
AMD Ryzen 7 3700X 3.6 GHz 8-Core Processor

CPU Cooler
AMD Wraith Max 55.78 CFM CPU Cooler

Motherboard
MSI B450-A PRO MAX ATX AM4 Motherboard

Memory
Corsair Vengeance RGB Pro 16 GB (2 x 8 GB) DDR4-3200 Memory

Storage
Western Digital Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive
Samsung 860 Evo 250 GB 2.5" Solid State Drive

Video Card
XFX Radeon RX 5700 8 GB DD Ultra Video Card

Case
SHARKOON TG5 ATX Mid Tower Case

Power Supply
Corsair CXM (2015) 450 W 80+ Bronze Certified Semi-modular ATX



Do you guys think it's safe to run the RX 5700 with the Corsair 450W PSU ?

I bought the other parts except the PSU which I already have.
What do you think guys?
Click to expand...
a 550W PSU should be ok, i put your setup in pc part picker and it said it's ok.
 
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SkyNetRising said:
You'll be fine with this one:
Seasonic S12II-620
Click to expand...

I'd be loath to use that one - it was good in its day, but less appropriate for modern systems in terms of how it provides/regulates power and responds to load.

Elight77 said:
I found this unit for an ok price, is it any good?

Be quiet! PURE POWER 11 | 500W PC power supply
Click to expand...
I don't know, Be quiet is a mixed bag, some good, some bad, and I don't personally have any particular information for that model, so, I'd probably avoid it.

Elight77 said:
After some help online I found that the peak power consumption of my build is well below of what my psu is capable of. Beside that the Corsair CX450M that I have is new (a gift from a friend) and is good enough in term of build quality.

I think the CX450M can't handle an rx 5700 xt gpu but an rx 5700 will do fine. I'm not planning to overclock my XFX Radeon RX 5700 or anything.
Click to expand...

MAYBE - I would potentially agree if it were one of the 2017 CX/CXM models, and even the 2017 ones aren't great, they're just adequate.

You MIGHT be able to get away with it, but why take that gamble?

If I were to recommend something, I'd go with this:
https://pcpartpicker.com/product/bq...-fully-modular-atx-power-supply-cp-9020177-na
 
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