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520 Watt PSU can't power GeForce GTX 650 ti Boost

Last response: in Graphics & Displays
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June 11, 2013 9:06:32 PM

Hello, Does anyone know what PSU rating I need to power a GeForce GTX 650 ti Boost?

My nephew got an Asus Essentio CM1745, a GeForce GTX 650 ti Boost and a Dynex 520 Watt PSU; but the PSU won't power it.

The system requirements for the GPU says a 450 Watt PSU will work, yet the 520 Watt PSU only has Max Watt rating of 420 Watts and the 520 Watt is the Peak Watt.

Do PSUs usually refer to the Max Watt rating or the Peak Watt rating when they say 520 Watt PSU? and do GPUs usually refer to the Max or Peak Watt in their system requirements?

I'm very confused and want to get this right for my nephew.

Thanks in advance to all who may consider this quandary :) 

Specs:
AMD A8-5500 processor
12GB DDR3
Multiformat DVD±RW/CD-RW drive
4MB cache memory
1TB Serial ATA Harddrive
a b ) Power supply
June 11, 2013 9:08:56 PM

Does that PSU have a 6pin power connector, and if it does, did you connect it to your 650ti boost?
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a b ) Power supply
June 11, 2013 9:45:36 PM

The way it is denoted sounds very fishy. Kind of like it is junk.

How many amps does it have on the +12v rail? And does it have a GPU power connector?
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June 11, 2013 10:03:27 PM

@Madn3ss795 - Thank you for the timely response. Yes, I plugged the 6 pin connector into the GPU.

@smeezekitty - Thank you for the timely response, too. Specs are as follows:
DC OUTPUT: +12V1=18A(YELLOW), +12V2=16A(YELLOW/BLACK), +3.3V=20A(ORANGE), +5V=18A(RED), -12V=0.3A(BLUE), +5VSB=2.0A(PURPLE), PG(GREY)
TOTAL POWER: 420W; +5V&+3.3V: 130W; +12V, +5V&+3.3V: 410W
THE COMBINED OUTPUT CURRENT +12V1&+12V2: NOT EXCEED 30A
PEAK POWER: 520W
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a b ) Power supply
June 11, 2013 10:14:35 PM

ilikepenguins said:
@Madn3ss795 - Thank you for the timely response. Yes, I plugged the 6 pin connector into the GPU.

@smeezekitty - Thank you for the timely response, too. Specs are as follows:
DC OUTPUT: +12V1=18A(YELLOW), +12V2=16A(YELLOW/BLACK), +3.3V=20A(ORANGE), +5V=18A(RED), -12V=0.3A(BLUE), +5VSB=2.0A(PURPLE), PG(GREY)
TOTAL POWER: 420W; +5V&+3.3V: 130W; +12V, +5V&+3.3V: 410W
THE COMBINED OUTPUT CURRENT +12V1&+12V2: NOT EXCEED 30A
PEAK POWER: 520W

The 12v rails sound alittle soft. It should be enough but the bolded part leads me to believe it cannot comfortable deliver its rated power.

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June 11, 2013 10:31:41 PM

@smeezekitty - Thank you, again. Seems like I should return it...know any PSU, under $30, that will work? The Dynex 520 Watt was $23 w/shipping from Amzn.
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a b ) Power supply
June 11, 2013 10:37:36 PM

I think you will have to spend no less then $40 to get a decent PSU.
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June 11, 2013 11:17:36 PM

smeezekitty said:
I think you will have to spend no less then $40 to get a decent PSU.

$35 and that's my final offer:lol:  Thank you very much for the help.

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June 11, 2013 11:43:22 PM

I apologize for the $35 final offer joke :(  We just need one that works and the GPU system requirements say 450Watts. I just don't know if this is referring to the Max or Peak Watts.

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a b ) Power supply
June 11, 2013 11:46:40 PM

It is referring to the nominal output. They are actually overstated and the Earthwatts 380w would actually run it. But it would be at its limit.

Look at the Corsair CX430. ~$40-50
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June 12, 2013 12:10:55 AM

I found the Corsair CX600 for $57.99. Do you think that would handle most mid to high end GPUs in case my nephew wants to upgrade his 650 ti Boost in a year or two? Thank you again, I'm new to gaming considerations.
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a b ) Power supply
June 12, 2013 12:16:25 AM

There's a deal for the CX600 v2 right now, which would be sufficient for future upgrading : http://pcpartpicker.com/part/corsair-power-supply-cmpsu...
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June 12, 2013 12:56:57 AM

I found another thread that dealt with this problem:
Is this the right PSU for a GeForce GTX 650 TI BOOST? http://www.tomshardware.com/answers/id-1647421/psu-gefo...

Some posts recommended up to 700Watts, but at $37.99 the Corsair CX600 is worth a try. Seriously, thank you for pointing that deal out! Wish we could afford the Corsair GS Series, but it was already a pain just talking my sister into returning the $99 GTX 630 for the $140 GTX 650 and then up to the $169 650 ti Boost AFTER buying the computer and monitor.
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a b ) Power supply
June 12, 2013 1:00:14 AM

650ti boosts uses less than 150w under full load. There's no need to push to a 700w or higher PSU unless you want to be really future-proof later ( like putting in a HD7990 ).
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June 12, 2013 1:16:53 AM

Madn3ss795 said:
There's no need to push to a 700w or higher PSU unless you want to be really future-proof later ( like putting in a HD7990 ).


Yeah, he'll probably want something like the HD7990 in a year or so and we'll have to upgrade BOTH. :/ 

I feel like I'm trying to mine Bitcoins!

You've been a huge help, thanks...I was totally lost.

I'll post back with any results/conclusion

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June 19, 2013 11:25:30 PM

Looks like the problem may have been a failure to hold the GPU in the motherboard slot while screwing in the anchor screws to the tower. Even the Corsair CX600 "failed" until a friend held the card in place while I anchored it with the screws. Anyway, I am glad we got the better PSU. Thank you all.
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a b ) Power supply
June 19, 2013 11:36:06 PM

Glad it's solved.
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June 24, 2013 12:43:13 PM

Madn3ss795 said:
Glad it's solved.


Me too and thanks for pointing out the CPU bargin! The Corsair, I think, is much better than the Dynex.
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a b ) Power supply
June 24, 2013 6:17:29 PM

You're welcome. Don't forget to pick the best answer :bounce: 
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