R7 250 with 300 watt power supply?

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SCtheLegend17

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Dec 6, 2016
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As i searched in the internet using power supply calculators i found that the maximum load is usually 250w average. I have a 300w Orion power supply so do you think i could handle adding an r7 250 with an 80mm fan into this pc

Motherboard=micro-atx h61m ds2h
CPU= Pentium g870 dual core socket 1155
RAM= two 4gb ddr3 RAM sticks
HDD= 5400rpm sata
i think cd rom and dvd rom but one optical drive
a usb microphone, usb mouse/keyboard standard, usb wifi card standard, headphones
GPU= hopefully getting from friend r7 250
one 80mm fan
 
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65W for the CPU, 75W for the videocard, let's say 100W for everything else(too much but let's just be safe). That's 240W worst case, probably more like 200W realistically. A decent quality 300W PSU could handle that. A cheap PSU? Well one issue with cheap power supplies is they don't always put out the rated power. A cheap 300W PSU might have trouble delivering that 200W-240W. I'd advise you to upgrade to a good PSU in any case.
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elbert

elbert

Glorious
Jan 11, 2005
9,704
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Its a 65w GPU so possible but the manufacture calls for 400w. Those watt requirements are a bit overstated. See how it goes but I suggest you start looking for a replacement psu just in case. here is a great one if find it needs a bit more power.

PCPartPicker part list / Price breakdown by merchant

Power Supply: Antec EarthWatts Green 380W 80+ Bronze Certified ATX Power Supply ($42.89 @ OutletPC)
Total: $42.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-12-16 18:44 EST-0500

 
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Sinistercr0c

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Dec 16, 2012
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11,360
My understanding is that the standard R7 250 does not require any additional power connectivity as it takes its power solely from the PCI-E slot -> 75w.

I've never heard of Orion as a PSU make so it may well be that the additional power draw on the PCI-E slot could de-stabilise your system overall depending on how the PSU holds up.

 
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dontlistentome

Glorious
Sep 5, 2016
5,979
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65W for the CPU, 75W for the videocard, let's say 100W for everything else(too much but let's just be safe). That's 240W worst case, probably more like 200W realistically. A decent quality 300W PSU could handle that. A cheap PSU? Well one issue with cheap power supplies is they don't always put out the rated power. A cheap 300W PSU might have trouble delivering that 200W-240W. I'd advise you to upgrade to a good PSU in any case.
 
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