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will this power supply be enough??

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  • Power Supplies
  • AMD
  • Graphics
Last response: in Graphics & Displays
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July 10, 2014 6:46:50 AM

Motherboard - GIGABYTE MA785GMT-UD2H
Processor - AMD Phenom II X4 965 Black edition (3.4ghz)
RAM - 2x 4gb(8gb) DDR3 PNY 1333mhz
Power Supply - 520watt
Screen - LG 23 inch LED monitor
i got a AMD r9 270x and a 520watt DYNEX power supply i have 5 cooling fans on my case and 3 hard drives

My PSU: http://www.dynexproducts.com/products/computer-accessor...

will it be okay to run the card under load and all that?
Thank you :) 

More about : power supply

a b ) Power supply
a b À AMD
July 10, 2014 6:49:40 AM

DefectedSOul said:
Motherboard - GIGABYTE MA785GMT-UD2H
Processor - AMD Phenom II X4 965 Black edition (3.4ghz)
RAM - 2x 4gb(8gb) DDR3 PNY 1333mhz
Power Supply - 520watt
Screen - LG 23 inch LED monitor
i got a AMD r9 270x and a 520watt DYNEX power supply i have 5 cooling fans on my case and 3 hard drives

My PSU: http://www.dynexproducts.com/products/computer-accessor...

will it be okay to run the card under load and all that?
Thank you :) 


I wouldn't. Are you in the USA?
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July 10, 2014 6:51:48 AM

LucoTF said:
DefectedSOul said:
Motherboard - GIGABYTE MA785GMT-UD2H
Processor - AMD Phenom II X4 965 Black edition (3.4ghz)
RAM - 2x 4gb(8gb) DDR3 PNY 1333mhz
Power Supply - 520watt
Screen - LG 23 inch LED monitor
i got a AMD r9 270x and a 520watt DYNEX power supply i have 5 cooling fans on my case and 3 hard drives

My PSU: http://www.dynexproducts.com/products/computer-accessor...

will it be okay to run the card under load and all that?
Thank you :) 


I wouldn't. Are you in the USA?


yeah thats where i live
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a b ) Power supply
a b À AMD
July 10, 2014 6:57:51 AM

DefectedSOul said:
yeah thats where i live


You have a 125w processor and a 180w graphics card - that's 26amps on the 12v rail right there. Plus all hard drives, fans and optical drives also use the 12v for power. I don't think your dynex is up to the task. Have a look at the sticker on the side of your power supply and see what the rating is under '+12v'

Here's a pretty good supply that would meet your needs
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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July 10, 2014 12:04:46 PM

LucoTF said:
DefectedSOul said:
yeah thats where i live


You have a 125w processor and a 180w graphics card - that's 26amps on the 12v rail right there. Plus all hard drives, fans and optical drives also use the 12v for power. I don't think your dynex is up to the task. Have a look at the sticker on the side of your power supply and see what the rating is under '+12v'

Here's a pretty good supply that would meet your needs
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


its only 18.0A but it also says it has 2 +12VDC ones 18Amps and the other is 16Amps

Also on the box it says it has 6+2 pin PCIe connectors for high end GPUs could it possibly mean that it has its own rail for the GPU?? maybe?
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July 10, 2014 12:13:49 PM

DefectedSOul said:
LucoTF said:
DefectedSOul said:
yeah thats where i live


You have a 125w processor and a 180w graphics card - that's 26amps on the 12v rail right there. Plus all hard drives, fans and optical drives also use the 12v for power. I don't think your dynex is up to the task. Have a look at the sticker on the side of your power supply and see what the rating is under '+12v'

Here's a pretty good supply that would meet your needs
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


its only 18.0A but it also says it has 2 +12VDC ones 18Amps and the other is 16Amps

Also on the box it says it has 6+2 pin PCIe connectors for high end GPUs could it possibly mean that it has its own rail for the GPU?? maybe?


No, the 8 pin connector is just to plug in the external power connections on the gpu, the gpu is still going through the 12v rail.

You basically want all your parts to take up <90% of the 12v rails amps. Wattage is not really the best statistic to work off of. As you can see the dynex rates at 520w, but only 18A on 12v rail, whereas the Rosewill linked above is rated for 450w but has 35A on the 12v rail, nearly double the real world power delivery.
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a b ) Power supply
a b À AMD
July 10, 2014 12:31:44 PM

stokes1790 said:
DefectedSOul said:
LucoTF said:
DefectedSOul said:
yeah thats where i live


You have a 125w processor and a 180w graphics card - that's 26amps on the 12v rail right there. Plus all hard drives, fans and optical drives also use the 12v for power. I don't think your dynex is up to the task. Have a look at the sticker on the side of your power supply and see what the rating is under '+12v'

Here's a pretty good supply that would meet your needs
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


its only 18.0A but it also says it has 2 +12VDC ones 18Amps and the other is 16Amps

Also on the box it says it has 6+2 pin PCIe connectors for high end GPUs could it possibly mean that it has its own rail for the GPU?? maybe?


No, the 8 pin connector is just to plug in the external power connections on the gpu, the gpu is still going through the 12v rail.

You basically want all your parts to take up <90% of the 12v rails amps. Wattage is not really the best statistic to work off of. As you can see the dynex rates at 520w, but only 18A on 12v rail, whereas the Rosewill linked above is rated for 450w but has 35A on the 12v rail, nearly double the real world power delivery.


Actually even that rosewill is a bit light for a 270x, I was looking at this but I think it's wrong:

http://forum-en.msi.com/faq/article/printer/power-requi...

For another $10 you can hulk smash it with 53amps:

http://pcpartpicker.com/part/xfx-power-supply-p1650snlb...

OP the 270x needs two connectors, not one :) 
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July 10, 2014 12:40:50 PM

stokes1790 said:
DefectedSOul said:
LucoTF said:
DefectedSOul said:
yeah thats where i live


You have a 125w processor and a 180w graphics card - that's 26amps on the 12v rail right there. Plus all hard drives, fans and optical drives also use the 12v for power. I don't think your dynex is up to the task. Have a look at the sticker on the side of your power supply and see what the rating is under '+12v'

Here's a pretty good supply that would meet your needs
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


its only 18.0A but it also says it has 2 +12VDC ones 18Amps and the other is 16Amps

Also on the box it says it has 6+2 pin PCIe connectors for high end GPUs could it possibly mean that it has its own rail for the GPU?? maybe?


No, the 8 pin connector is just to plug in the external power connections on the gpu, the gpu is still going through the 12v rail.

You basically want all your parts to take up <90% of the 12v rails amps. Wattage is not really the best statistic to work off of. As you can see the dynex rates at 520w, but only 18A on 12v rail, whereas the Rosewill linked above is rated for 450w but has 35A on the 12v rail, nearly double the real world power delivery.


alright heres a picture of the label on my PSU http://i4.photobucket.com/albums/y102/iameatingjam/Unti...

do you thing there is anything a can do to get it to temporally work till i have enough money to get a better PSU?

Also the 450 just says 1 +12VDC on my PSU its got +12V1DC and +12V2DC
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July 10, 2014 12:47:39 PM

LucoTF said:
stokes1790 said:
DefectedSOul said:
LucoTF said:
DefectedSOul said:
yeah thats where i live


You have a 125w processor and a 180w graphics card - that's 26amps on the 12v rail right there. Plus all hard drives, fans and optical drives also use the 12v for power. I don't think your dynex is up to the task. Have a look at the sticker on the side of your power supply and see what the rating is under '+12v'

Here's a pretty good supply that would meet your needs
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


its only 18.0A but it also says it has 2 +12VDC ones 18Amps and the other is 16Amps

Also on the box it says it has 6+2 pin PCIe connectors for high end GPUs could it possibly mean that it has its own rail for the GPU?? maybe?


No, the 8 pin connector is just to plug in the external power connections on the gpu, the gpu is still going through the 12v rail.

You basically want all your parts to take up <90% of the 12v rails amps. Wattage is not really the best statistic to work off of. As you can see the dynex rates at 520w, but only 18A on 12v rail, whereas the Rosewill linked above is rated for 450w but has 35A on the 12v rail, nearly double the real world power delivery.


Actually even that rosewill is a bit light for a 270x, I was looking at this but I think it's wrong:

http://forum-en.msi.com/faq/article/printer/power-requi...

For another $10 you can hulk smash it with 53amps:

http://pcpartpicker.com/part/xfx-power-supply-p1650snlb...

OP the 270x needs two connectors, not one :) 


Thanks :)  but i will look on to a new one soon tho and ill probably go with that one just was hoping mine could handle it for a while. i just dont have the money at the moment for a new PSU and find it odd that my power supply says its got 2 12VDC rails
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a b ) Power supply
a b À AMD
July 10, 2014 12:48:03 PM

DefectedSOul said:
its only 18.0A but it also says it has 2 +12VDC ones 18Amps and the other is 16Amps

Also on the box it says it has 6+2 pin PCIe connectors for high end GPUs could it possibly mean that it has its own rail for the GPU?? maybe?

You take the combined rating of the 2, so you have 34 amps max, or 408w. Except you don't -

http://www.dynexproducts.com/cms/documents/Manuals/DX-4...

This says max 420w across the system, and stuff like the motherboard (which runs on a different rail) can easily take up 40+ watts under load. It's all just way too close for comfort. Even if you got an adapter cable for the second power pin you'd be pushing that psu to the limit (and possibly beyond).

(edited to fix link)
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a b ) Power supply
a b À AMD
July 10, 2014 12:52:13 PM

DefectedSOul said:
Thanks :)  but i will look on to a new one soon tho and ill probably go with that one just was hoping mine could handle it for a while. i just dont have the money at the moment for a new PSU and find it odd that my power supply says its got 2 12VDC rails


multiple rails is quite normal, as is a 'max combined' rating across the +12v rails (you can expect to lose at least 1amp per rail for the combined rating)
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July 10, 2014 12:57:10 PM

LucoTF said:
DefectedSOul said:
Thanks :)  but i will look on to a new one soon tho and ill probably go with that one just was hoping mine could handle it for a while. i just dont have the money at the moment for a new PSU and find it odd that my power supply says its got 2 12VDC rails


multiple rails is quite normal, as is a 'max combined' rating across the +12v rails (you can expect to lose at least 1amp per rail for the combined rating)


Okay so it is possible that it can handle it but only thing is it might be pushing the limit of the PSU?
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Best solution

a b ) Power supply
a b À AMD
July 10, 2014 1:09:56 PM

DefectedSOul said:
Okay so it is possible that it can handle it but only thing is it might be pushing the limit of the PSU?


Let's do the numbers:

125w - CPU
180w - GPU
40w - mobo
6w - both RAM
25w - three hard drives
10w - 5 cooling fans

that's 386w and if you use a dvd drive that's another 5-20 watts (depending of if it's in use or not).

That's over 90% of your 420w rating, so while it's possible that your PSU can run it it's also possible that your PSU goes pop the first time you load up a game. That is really close, dude
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July 10, 2014 1:24:48 PM

LucoTF said:
DefectedSOul said:
Okay so it is possible that it can handle it but only thing is it might be pushing the limit of the PSU?


Let's do the numbers:

125w - CPU
180w - GPU
40w - mobo
6w - both RAM
25w - three hard drives
10w - 5 cooling fans

that's 386w and if you use a dvd drive that's another 5-20 watts (depending of if it's in use or not).

That's over 90% of your 420w rating, so while it's possible that your PSU can run it it's also possible that your PSU goes pop the first time you load up a game. That is really close, dude


Alright fair enough Thanks alot man. i might look at a few computer stores in town and see if they have a decent on that will run what i need and hopefully i wont have to order one and have to wait for the shipping. ill see what i can do.
Also i do have another power supply out of an older computer do you think i could use that PSU to power the card alone or also have have it power my other hard drives to take load off of my PSU till i get a new PSU?? or just have it power my hard drives or something to take load off of my PSU??
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a b ) Power supply
a b À AMD
July 10, 2014 1:33:26 PM

DefectedSOul said:
LucoTF said:
DefectedSOul said:
Okay so it is possible that it can handle it but only thing is it might be pushing the limit of the PSU?


Let's do the numbers:

125w - CPU
180w - GPU
40w - mobo
6w - both RAM
25w - three hard drives
10w - 5 cooling fans

that's 386w and if you use a dvd drive that's another 5-20 watts (depending of if it's in use or not).

That's over 90% of your 420w rating, so while it's possible that your PSU can run it it's also possible that your PSU goes pop the first time you load up a game. That is really close, dude


Alright fair enough Thanks alot man. i might look at a few computer stores in town and see if they have a decent on that will run what i need and hopefully i wont have to order one and have to wait for the shipping. ill see what i can do.
Also i do have another power supply out of an older computer do you think i could use that PSU to power the card alone or also have have it power my other hard drives to take load off of my PSU till i get a new PSU?? or just have it power my hard drives or something to take load off of my PSU??


It's my understanding that it's possible to run dual PSUs but I've never tried it and wouldn't know where to start. Google may help you there, sorry.
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July 10, 2014 1:38:52 PM

LucoTF said:
DefectedSOul said:
LucoTF said:
DefectedSOul said:
Okay so it is possible that it can handle it but only thing is it might be pushing the limit of the PSU?


Let's do the numbers:

125w - CPU
180w - GPU
40w - mobo
6w - both RAM
25w - three hard drives
10w - 5 cooling fans

that's 386w and if you use a dvd drive that's another 5-20 watts (depending of if it's in use or not).

That's over 90% of your 420w rating, so while it's possible that your PSU can run it it's also possible that your PSU goes pop the first time you load up a game. That is really close, dude


Alright fair enough Thanks alot man. i might look at a few computer stores in town and see if they have a decent on that will run what i need and hopefully i wont have to order one and have to wait for the shipping. ill see what i can do.
Also i do have another power supply out of an older computer do you think i could use that PSU to power the card alone or also have have it power my other hard drives to take load off of my PSU till i get a new PSU?? or just have it power my hard drives or something to take load off of my PSU??


It's my understanding that it's possible to run dual PSUs but I've never tried it and wouldn't know where to start. Google may help you there, sorry.


okay thanks again man. ive used another PSU to run an extra few hard drives on another computer just didnt know if it would work on a GPU. thanks alot for your help :) 
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