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520W enough for a 5970?

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  • Power Supplies
  • Components
Last response: in Components
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November 26, 2011 6:05:33 AM

I currently have a E6400 (OCed to 2.9GHZ) system with 2 GB DDR2 RAM, an IDE drive, dunno how many fans (think 1 case fan), 6 USB2 ports, and currently, an 8800GT. I bought a 5970, planning to upgrade my computer soon, but wondering if I would damage it if I tried it in my current rig?

More about : 520w 5970

a b ) Power supply
November 26, 2011 6:31:47 AM

The system will bootlnecking your 5970. You can buy a PSU bigger than 520w now and you will put in your new system when you upgrade.
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November 26, 2011 7:04:19 AM

sosofm said:
The system will bootlnecking your 5970. You can buy a PSU bigger than 520w now and you will put in your new system when you upgrade.

I don't wanna recable everything. Too much work since I already know that the E6400 will hevaly bottleneck the 5970. I'm just wondering if it's safe to put it in my current build.
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a b ) Power supply
November 26, 2011 7:14:03 AM

Yeah 520 is good enough. Full system stress from guru3d using an overclocked Core i7 965 reached:

System in IDLE = 193 Watts
System with GPU in FULL Stress = 438 Watts
Difference (GPU load) = 245 Watt

I would say you'll be fine :) 

Forgot this: http://www.guru3d.com/article/radeon-hd-5970-review-tes...
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November 26, 2011 7:36:21 AM

wintermint said:
Yeah 520 is good enough. Full system stress from guru3d using an overclocked Core i7 965 reached:

System in IDLE = 193 Watts
System with GPU in FULL Stress = 438 Watts
Difference (GPU load) = 245 Watt

I would say you'll be fine :) 

Forgot this: http://www.guru3d.com/article/radeon-hd-5970-review-tes...

Woohoo =D
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a c 1218 ) Power supply
November 26, 2011 3:59:30 PM

Guru3D also stated "That power supply needs to have (in total accumulated) at least 50 Amps available on the +12 volts rails."

It's not the power supply's total wattage that determines whether or not the power supply is capable of properly powering the system. The only specification that really matters is the power supply's combined +12 Volt continuous current rating.
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November 27, 2011 2:55:23 PM

ko888 said:
Guru3D also stated "That power supply needs to have (in total accumulated) at least 50 Amps available on the +12 volts rails."

It's not the power supply's total wattage that determines whether or not the power supply is capable of properly powering the system. The only specification that really matters is the power supply's combined +12 Volt continuous current rating.

How do I find out about this +12 volt continuous rating?

Would it be dangerous if I just plugged it in to see? Would being underpowered possibly break the card?
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a c 1218 ) Power supply
November 27, 2011 5:40:34 PM

bromanbro said:
How do I find out about this +12 volt continuous rating?

Would it be dangerous if I just plugged it in to see? Would being underpowered possibly break the card?

What is the make and model of your power supply unit?

There should be a label affixed to the power supply showing the DC Output load table.

Power supplies that lack protection circuitry (e.g. OCP, OPP, OTP, OVP, ...) can destroy the components that are attached to them if/when the power supply fails.
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November 27, 2011 6:17:39 PM

ko888 said:
What is the make and model of your power supply unit?

There should be a label affixed to the power supply showing the DC Output load table.

Power supplies that lack protection circuitry (e.g. OCP, OPP, OTP, OVP, ...) can destroy the components that are attached to them if/when the power supply fails.

It's AcePower. Here's a link to the specs: http://www.aone.co.uk/ProdInfo.ASP?ProductID=3229
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a c 1218 ) Power supply
November 27, 2011 7:44:56 PM

bromanbro said:
It's AcePower. Here's a link to the specs: http://www.aone.co.uk/ProdInfo.ASP?ProductID=3229

That power supply unit is grossly inadequate for a Radeon HD 5970 graphics card.

The Radeon HD 5970 also requires that the power supply unit have at least one 75W 6-pin and one 150W 8-pin PCI-Express power connectors. Your ACE 520W PSUACE52012CM doesn't have any PCI-Express power connectors.

The label on your power supply also doesn't specify if the values are peak values or continuous values.

That power supply's +12V rail capacity is at most 26 Amps assuming the power supply is able to deliver its labelled power and the label is displaying continuous rating values and not peak rating values. It's, realistically, less than half of what is required by the Radeon HD 5970.

To sum it up your power supply does not have the required connectors or the combined +12 Volt continuous current rating to even power up your system with a Radeon HD 5970.
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a c 275 ) Power supply
November 27, 2011 7:48:39 PM

bromanbro said:
It's AcePower. Here's a link to the specs: http://www.aone.co.uk/ProdInfo.ASP?ProductID=3229

Unfortunately that particular unit isn't going to power a 5970.
You need a new psu that's capable son.
Something good with 6 and 8 pin pcie connects and @650W.
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November 28, 2011 12:01:07 AM

Best answer selected by bromanbro.
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