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Is my power supply enough for my PC?

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July 25, 2014 11:45:36 AM

I just purchased a new video card off ebay, I am wondering if my power supply can handle it. I am currently running an AMD R7-260X with no issue, I ordered the R9-270X Toxic.

I have Antec NEO 520Watt power supply. I think it's pretty high quality and it has a 40A rail.

I am running an i7 920 @ 3.8GHZ and that is what is making me a little nervous. This card is supposed to draw up to 332 watts, leaving me with 188 watts left.

I also have 1 ssd, 1 mechanical HDD, 1 dvdrw, and a usb 3.0 pci e card.

Should I upgrade my PSU, or does it sound good enough for my machine?

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July 25, 2014 11:49:41 AM

With that processor and that card, I wouldn't trust a 520 Watt PSU. Even if it works, it may fail anytime. Better to just be safe and upgrade the PSU.
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a b ) Power supply
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July 25, 2014 11:54:28 AM

kawininjazx said:
I just purchased a new video card off ebay, I am wondering if my power supply can handle it. I am currently running an AMD R7-260X with no issue, I ordered the R9-270X Toxic.

I have Antec NEO 520Watt power supply. I think it's pretty high quality and it has a 40A rail.

I am running an i7 920 @ 3.8GHZ and that is what is making me a little nervous. This card is supposed to draw up to 332 watts, leaving me with 188 watts left.

I also have 1 ssd, 1 mechanical HDD, 1 dvdrw, and a usb 3.0 pci e card.

Should I upgrade my PSU, or does it sound good enough for my machine?


You will be 100% fine with that PSU. there is NO way that the r9 270x will use 332w. You must of seen the complete power consumption of a full system under load. http://www.guru3d.com/articles_pages/msi_radeon_r9_270x...

They used a 6 core extreme edition CPU overclocked for their results by the way, and still only came up with a total of 286w under load for the full system. The gpu under full load only used 177w of power.
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July 25, 2014 12:00:47 PM

kawininjazx said:
I just purchased a new video card off ebay, I am wondering if my power supply can handle it. I am currently running an AMD R7-260X with no issue, I ordered the R9-270X Toxic.

I have Antec NEO 520Watt power supply. I think it's pretty high quality and it has a 40A rail.

I am running an i7 920 @ 3.8GHZ and that is what is making me a little nervous. This card is supposed to draw up to 332 watts, leaving me with 188 watts left.

I also have 1 ssd, 1 mechanical HDD, 1 dvdrw, and a usb 3.0 pci e card.

Should I upgrade my PSU, or does it sound good enough for my machine?


The Intel i7-920 is a 130W TDP. I can't see how you can get that to draw 330W. You didn't say if you intended running both cards in Crossfire (or individually) or if one is intended to replace the other.

Regardless, the Sapphire page for your card recommends a 600W power supply and 2 x 6 pin 75W connectors, implying that in total the card will need up to 225W power. (75W can come from the PCI connector).

If this is your PSU, then it does not have the requisite adapters. The Sapphire Toxic does come with a molex-6-pin adapter, if you want to chance that the 130W +225W + other components W (<520W- inefficiency of PSU), then you could. your headroom is severely limited though,
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a b ) Power supply
a b U Graphics card
July 25, 2014 12:01:30 PM

SuperGamerBoy said:
The proccy is oc'ed to 3.8 Ghz.
See this- http://www.tomshardware.com/reviews/overclock-core-i7,2...


And your point is? Add up the wattage of the cpu at 4.0ghz(148w) and 177w for the GPU at 100% load and you only get 325w under load, lol.

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July 25, 2014 12:21:16 PM

Karsten75 said:
kawininjazx said:
I just purchased a new video card off ebay, I am wondering if my power supply can handle it. I am currently running an AMD R7-260X with no issue, I ordered the R9-270X Toxic.

I have Antec NEO 520Watt power supply. I think it's pretty high quality and it has a 40A rail.

I am running an i7 920 @ 3.8GHZ and that is what is making me a little nervous. This card is supposed to draw up to 332 watts, leaving me with 188 watts left.

I also have 1 ssd, 1 mechanical HDD, 1 dvdrw, and a usb 3.0 pci e card.

Should I upgrade my PSU, or does it sound good enough for my machine?


The Intel i7-920 is a 130W TDP. I can't see how you can get that to draw 330W. You didn't say if you intended running both cards in Crossfire (or individually) or if one is intended to replace the other.

Regardless, the Sapphire page for your card recommends a 600W power supply and 2 x 6 pin 75W connectors, implying that in total the card will need up to 225W power. (75W can come from the PCI connector).

If this is your PSU, then it does not have the requisite adapters. The Sapphire Toxic does come with a molex-6-pin adapter, if you want to chance that the 130W +225W + other components W (<520W- inefficiency of PSU), then you could. your headroom is severely limited though,


I am replacing the R7 260X with the R9 270X Toxic. I run my PC all day at work and have no problems at all. I saw that page where it claimed the i7 was drawing 300 watts, but I don't see how that is possible.
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July 25, 2014 1:02:07 PM

I just found a Silencer 610 EPS12V I had laying around from an old customer. It came from a PC with a bad motherboard, so I don't really know the story of it. I'm gonna plug it into my backup machine, a Q9650/6GB/8800GTS 640MB and let it run until the card comes Thursday. If it checks out, I might use that. Right now it's working.
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a b ) Power supply
a b U Graphics card
July 25, 2014 1:46:47 PM

You will be fine with the antec neo.
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