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Upgrading Hd 5770 and need a new PSU

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January 7, 2014 4:43:19 AM

I am upgrading my ASUS HD 5770 graphics card to a EVGA GTX 760 and my Ultra LS 500 PSU (The lower limit of wattage NVidia says it needs) only has 28 amps on the +12v rail, while the graphics card requires at least 30.

So I am trying to determine what PSU I should get.

Here is a list of my major components as they stand now

CPU i3 550 Motherboard Gigabyte H55M Ram 1333MHZ PC3 - 10600 DiMM (1 stick 4 Gb) HDD Seagate 7200/16MB/Sata Drive CD Lite On 24x

(Sorry I didn't use the PCPartPicker.com but many of my older components were not on there)

When I filled out an online PSU calculator the result suggested a 430 corsair PSU for $50 with $20 MIR.

CORSAIR CXM series CX430M 430W ATX12V v2.3 80 PLUS BRONZE Certified Modular Active PFC Power Supply

Which has the correct +12 rail amperage but is far below the suggested wattage by NVidia.

I was looking at this Thermaltake PSU for $45 with $20 MIR

Thermaltake TR2 TR-700 700W ATX 12V V2.3 & EPS 12V SLI Ready CrossFire Ready Active PFC Power Supply

Is the Thermaltake 700 going to be a good PSU for me?

I do overclock my CPU and in the future I am planning on upgrading my motherboard and CPU so I anticipate a larger PSU would be needed.

Thanks for your opinions in advance.

More about : upgrading 5770 psu

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January 7, 2014 5:00:03 AM

I think you should try looking unto this PSU http://www.newegg.com/Product/Product.aspx?Item=N82E168..., i know it's a bit expensive than the ones you posted but for all the parts you've shown I think it can deliver enough power to your system.. hope this helps.. :) 
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Anonymous
January 7, 2014 5:09:04 AM

it depends on what you plan to do with your future use of your pc a good branded 600Watt psu will be plenty although to get more long term use (you may want to sli or upgrade whole system a couple of years down the road) I would recommend a good branded 750watt upwards, believe when people say don't skimp-out on the quality of your psu.
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