Will my 450W PSU be enough for a RX 5700 XT?

[Rackso]

Hello, people.

 

So I just recently built the following PC:

 

Ryzen 7 3700x (stock speeds and cooler)

TUF Gaming B450M Plus

Corsair Vengeance LPX 2x8 DDR4 @3000Mhz

1 Kingston UV500 M.2 SSD 120GN

1- 2TB Barracuda HDD

Corsair H110R Case (1 rear 120mm fan and 1 120mm fan on top)

PSU: Corsair CX450 80+ Bronze

 

I had an old R9 380 4GB Card at home so I am using that one for now but would like to upgrade to a RX 5700 XT (XFX THICC III Ultra) and I would like to know if this PSU is enough to handle that card at stock speeds? If not I can still go back to the store and change it for bigger one. My other option of PSU at that store is an EVGA 700 BR 80+ Bronze (I know it isn´t the best PSU out there but those are my options in my country if I want to stay on my budget. I could go for a Asus ROG PSU but those are damn expensive)

 

EDIT: I have already used System builder and other sources to try to calculate the aproximate Watts consumption and it says that it would be 420 at best but I just want to make sure. Also, I have the extra cables at home to convert 1 x 6+2 pin connector to a 2x 6+2 pin connector if neccesary.

 

EDIT 2: I was able to find a new CX 650 which comes with 2x 6+2 pin connector. Thanks for all the help and videos.

 

Thank you in advance for the help and patience with this noobie.

 

[Tisham]

Use psu calculator 

[seon123]

No. The 5700 XT variants I've seen all have 2 PCIe connectors

[seon123]

Just now, Tisham said:

Use psu calculator 

Might as well use random.org, if you want a random number with no basis in reality

[Rackso]

5 minutes ago, Tisham said:

Use psu calculator 

I  have done my research and according to the calculators my rig will consume 410 Watts at best but I have read in other places that you need a 550-600w PSU for this specific model. That is why I am asking to the experts

[Rackso]

8 minutes ago, seon123 said:

No. The 5700 XT variants I've seen all have 2 PCIe connectors

And it helps if I have the extra cables at home to tranform a single 6 +2 pin connector to 2 x 6+2 pin connectors?

 

But focusing on power consumption, will that 450 be enough? or should I change it for the 700 BR EVGA  PSU?

[Xiee]

Get at least a 550W 80+ Gold Rated PSU.

[Rackso]

1 minute ago, Xiee said:

Get at least a 550W 80+ Gold Rated PSU.

The EVGA 700BR 80 + Bronze is the only "best" and bigger PSU I can afford. Will it be enough?

[Xiee]

Just now, Rackso said:

The EVGA 700BR 80 + Bronze is the only "best" and bigger PSU I can afford. Will it be enough?

Yeah that should be fine.

[Rackso]

1 minute ago, Xiee said:

Yeah that should be fine.

Thank you, man!

[seon123]

4 minutes ago, Rackso said:

And it helps if I have the extra cables at home to tranform a single 6 +2 pin connector to 2 x 6+2 pin connectors?

No, it does not.

5 minutes ago, Rackso said:

But focusing on power consumption, will that 450 be enough? or should I change it for the 700 BR EVGA  PSU?

For wattage, yes. There is more to a PSU than wattage, so I recommend you get a better, lower wattage PSU than the BR.

[m777y]

should be

[Rackso]

14 hours ago, m777y said:

should be

Should be what? Sorry

[boggy77]

the evga br is lower quality than the cx. i'd keep your current psu or upgrade to a 550w high quality one.

[VEXICUS]

To answer your question......I present Bryan from Tech Yes City.

 

[boggy77]

your cpu will draw max 120W

your gpu will dram max 250W

the rest will draw max 50W

total 420W that's under the most extreme overclocking and conditions. 

I think you're fine.

[Herman Mcpootis]

22 minutes ago, boggy77 said:

your cpu will draw max 120W

your gpu will dram max 250W

the rest will draw max 50W

total 420W that's under the most extreme overclocking and conditions. 

I think you're fine.

Problem is, the CX450 only has one 8-pin connector, so OP either has to upgrade or get a dual molex to 6-pin adaptor.

[grss1982]

This might give you a rough idea I guess.

 

 

[Rackso]

1 hour ago, Herman Mcpootis said:

Problem is, the CX450 only has one 8-pin connector, so OP either has to upgrade or get a dual molex to 6-pin adaptor.

I do have a mollex! But was going to change it because someone told me above that I should go for the 700w BR instead. If you guys think the  450 W will handle the RX 5700 XT then I will stick with it. Now I am confused with all the information around here hehe..

[Rackso]

1 hour ago, boggy77 said:

the evga br is lower quality than the cx. i'd keep your current psu or upgrade to a 550w high quality one.

There is no better 550w where I live, just more EVGA BR PSU and a CX 650 but it is out of stock

[Rackso]

1 hour ago, boggy77 said:

your cpu will draw max 120W

your gpu will dram max 250W

the rest will draw max 50W

total 420W that's under the most extreme overclocking and conditions. 

I think you're fine.

Do you think the 450W will be able to supply that wattage? I have heard that no PSU provides what it says it does, so the 450w is going to be providing around 430W for example.. it is a Bronze + so it should have a 85% effiency margin.

[boggy77]

2 minutes ago, Rackso said:

Do you think the 450W will be able to supply that wattage? I have heard that no PSU provides what it says it does, so the 450w is going to be providing around 430W for example.. it is a Bronze + so it should have a 85% effiency margin.

They usually provide more than what they are rated for. 85% efficiency means that to supply 450, it will draw 550w or whaver from the grid.

[Rackso]

11 minutes ago, boggy77 said:

They usually provide more than what they are rated for. 85% efficiency means that to supply 450, it will draw 550w or whaver from the grid.

So you recommend me staying with the 450 w? I thought upgrading to the 700 w BR , while worse quality, will still be more future proof in case I would like to change some parts along the way. Also, is using a mollex to conver a single 8 pin connector to 2 x 8+ 2 pin connectors a bad idea? are they going to work fine like if they were 2 independent pin connectors?

[Rackso]

2 hours ago, boggy77 said:

They usually provide more than what they are rated for. 85% efficiency means that to supply 450, it will draw 550w or whaver from the grid.

So I finally went for a CX 650. I was able to find one new on that store. Ty for all the help.

[Rackso]

3 hours ago, Herman Mcpootis said:

Problem is, the CX450 only has one 8-pin connector, so OP either has to upgrade or get a dual molex to 6-pin adaptor.

I was able to find a CX 650W this one comes with 2x 6+2 pin connectors