PSU Sizing for RTX 2080

[crazytlingit]

I'm looking at the SEASONIC SSR-750PX (750 watt) and the EVGA SuperNOVA 650 G3 (650 watt) PSU for the RTX 2080 showing a 650 watt (min) requirement. I'm not experienced at all when sizing out PSU's for graphics cards. I currently run a EVGA SuperNOVA 550 G3 for the GTX 1070, but that is the min size PSU, wondering if I should stay at the min requirement or take a step up.

 

[jankerson]

Nobody really knows yet what those things are going to need etc.

I am thinking that the Seasonic 750W would be a safe bet however.

 

[TechyInAZ]

If you go to our megathread on Volta/Turing and/or the Nvidia website on the RTX 2080 specs, it lists a 225W TDP: http://www.tomshardware.com/forum/id-3771988/nvidia-turing-volta-megathread.html

Since TDP is the same as always, assume a 550W-650W PSU being the recommended wattage. I personally run a GTX 1080 off a EVGA G3 550W PSU and it's been excellent.

 

[rvilkman]

TDP was listed around 250W - 285W, naturally it will pull more when fully overclocked especially for custom cards that might take more power.

Not knowing your overclocking preferences and general needs of your system, i'd certainly agree to err on the side of caution and go for the higher capacity one.

That being said it's quite possible that your 550w will handle it fine, so i'd wait on it until more information is available.

 

[TechyInAZ]

You sure? where are you getting your numbers?

 

[crazytlingit]

TDP was listed around 250W - 285W, naturally it will pull more when fully overclocked especially for custom cards that might take more power.

Not knowing your overclocking preferences and general needs of your system, i'd certainly agree to err on the side of caution and go for the higher capacity one.

That being said it's quite possible that your 550w will handle it fine, so i'd wait on it until more information is available.

So I'm confused somewhat, there is a chance the 550w might work, from the description of the RTX 2080 it states that it will require a min of 650w power supply, is there another metric I could use to determine if my 550w power supply will work?

 

[jankerson]

TDP was listed around 250W - 285W, naturally it will pull more when fully overclocked especially for custom cards that might take more power.

Not knowing your overclocking preferences and general needs of your system, i'd certainly agree to err on the side of caution and go for the higher capacity one.

That being said it's quite possible that your 550w will handle it fine, so i'd wait on it until more information is available.

So I'm confused somewhat, there is a chance the 550w might work, from the description of the RTX 2080 it states that it will require a min of 650w power supply, is there another metric I could use to determine if my 550w power supply will work?

No, wait until the actual review come out to see what these cards really pull power wise.

NOBODY will know until then.

 

[crazytlingit]

TDP was listed around 250W - 285W, naturally it will pull more when fully overclocked especially for custom cards that might take more power.

Not knowing your overclocking preferences and general needs of your system, i'd certainly agree to err on the side of caution and go for the higher capacity one.

That being said it's quite possible that your 550w will handle it fine, so i'd wait on it until more information is available.

So I'm confused somewhat, there is a chance the 550w might work, from the description of the RTX 2080 it states that it will require a min of 650w power supply, is there another metric I could use to determine if my 550w power supply will work?

No, wait until the actual review come out to see what these cards really pull power wise.

NOBODY will know until then.

Do you know the risks for using a under powered PSU, my system is not high end and pretty basic, I'm not overclocking anything.

 

[jankerson]

TDP was listed around 250W - 285W, naturally it will pull more when fully overclocked especially for custom cards that might take more power.

Not knowing your overclocking preferences and general needs of your system, i'd certainly agree to err on the side of caution and go for the higher capacity one.

That being said it's quite possible that your 550w will handle it fine, so i'd wait on it until more information is available.

So I'm confused somewhat, there is a chance the 550w might work, from the description of the RTX 2080 it states that it will require a min of 650w power supply, is there another metric I could use to determine if my 550w power supply will work?

No, wait until the actual review come out to see what these cards really pull power wise.

NOBODY will know until then.

Do you know the risks for using a under powered PSU, my system is not high end and pretty basic, I'm not overclocking anything.

There is nothing good or positive about using an underpowered PSU.

It's all negatives.

You put the PC under serious risk.

 

[dontlistentome]

Not all power supplies are the same, so it's impossible to objectively state which one will work and which one won't until the cards come out.

A 'good' 500W power supply can outperform a 'cheap' 650W power supply. Just because a power supply is rated 650W does not mean it outputs 650 usable watts.

That's why I'd advise people contemplating a power supply purchase for these new cards to wait. Either that, or buy a QUALITY power supply now that is slightly more powerful than the suggested minimums. If you are thinking of buying one of the new cards, why would a person cheap out on the power supply for the card?