Sapphire R9 270x power issues.

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Neil Sharma

Honorable
Jan 20, 2014
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10,520
i have recently ordered Sapphire R9 270x and corsair h80i for my rig.

cpu-AMD FX 8350
mobo-gigabyte 970x-ds3
power supply- coolermaster 500W
HDD-WD 1Tb

when i intalled both h80 i and r9 270x on my system . it was not getting on.

when i removed my grfx card it got working.

when i installed this card on 650w power supply machine it was working

i want to know why 270x is not letting my RIG get on.
i have read that 270x requried 500w supplies....can there be other issues ?
 
Solution
A
The values on the Rails of the CM 500W are not high enough to maintain the output that is required by the water cooling unit+graphics card

example: CM 500W is only UPTO 70% efficiency meaning it will only output around 350W continuously

A basic 80% efficiency PSU will output around 400W continuously if it's a decent 500W unit.

A 80% efficiency PSU will out around 480W continuously if it's a decent 600W unit.

Furthermore, The coolermaster PSU is generally made of poorer quality parts than 80% efficiency units and is not reliable especially with the extra wattage from a powerful graphics card and a water cooling unit.
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A

AshyCFC

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Oct 12, 2013
2,514
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Yes the other issue is that most PSUs made by coolermaster are sh*t. Get a solid 600w or more and your system will be great. Not all PSUs output what they say. The ggenerally cheapest but quality unit for these size is found by XFX or a corsair cx series if you must though XFX is better. Essentially you need a bigger power supply, don't cheap out on it either.
 
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A

AshyCFC

Honorable
Oct 12, 2013
2,514
0
13,460
The values on the Rails of the CM 500W are not high enough to maintain the output that is required by the water cooling unit+graphics card

example: CM 500W is only UPTO 70% efficiency meaning it will only output around 350W continuously

A basic 80% efficiency PSU will output around 400W continuously if it's a decent 500W unit.

A 80% efficiency PSU will out around 480W continuously if it's a decent 600W unit.

Furthermore, The coolermaster PSU is generally made of poorer quality parts than 80% efficiency units and is not reliable especially with the extra wattage from a powerful graphics card and a water cooling unit.
 
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