PSU Help :(

[Max W]

Hello, so i purchased the EVGA Nvidia 750 ti 2gb GDDR5 - http://www.newegg.com/Product/Product.aspx?Item=N82E16814487028

And I already measured out my case internals to make sure it fits and it is PCI Express 3.0 compatible, which is what my comp. has. But i've hit a snag. I don't know if I need a PSU upgrade, my comp. uses a 300W PSU (Not much, lol) here's a link to my computer -
http://h20566.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay/?sp4ts.oid=5295962&spf_p.tpst=kbDocDisplay&spf_p.prp_kbDocDisplay=wsrp-navigationalState%3DdocId%253Demr_na-c03517210-12%257CdocLocale%253D%257CcalledBy%253D&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken

And everywhere I ask I get two conflicting answers, one answer is to upgrade to a 430W PSU, and the other answer I get is to not upgrade, because I supposedly don't need it. And I already have tried Power Usage calculators, but none of them are reliable, they are quite inflated. So could anyone help me out, if the link doesn't work for some reason, here's what my desktop is.

It's an HP Pavilion G7-1430 Desktop
It uses an AMD A10-5700K Accelerated Proccessor
It has integrated AMD Radeon 7660D Graphics (Which I will overwrite when i put in my new card)
8GB of RAM
Beats Audio (Kinda sucky i know)
And I use an Ethernet Cable, not wireless (Not sure if this is relevant or not)


I have no idea how to calculate all of this manually (if thats what needs to be done) so i could really use some help with this

 

[mjmacka]

Okay, so the card itself recommends at least a 300W power supply. You can try it without upgrading the power supply. It's safer to just eat the cost of an upgrade and go to a 430W power supply.

The CPU is going to consume 60W. The drive, ram, and HDD are going to consume about 25-50W. The GPU is going to use the rest of the power the power supply puts out. The risk you run is that during height power consumption time (gaming), you might draw more power than your power supply outputs, causing your PC to black screen or reboot.

 

[mjmacka]

http://pcpartpicker.com/ offers a power supply calculator too. Just throw your parts into the build section and see what they consume. I am getting under 250 W for a build similar to yours, so I think you are safe.

 

[HiTechObsessed]

No upgrade necessary. Anandtech's benchmarks on the 750 Ti: http://www.anandtech.com/show/7764/the-nvidia-geforce-gtx-750-ti-and-gtx-750-review-maxwell/22

The entire system at full load draws a max of 175w or so, and that's with an overclocked i7 Extreme. You'll be closer to around 150w MAX for your entire system. The APU won't draw near 100w when the integrated GPU is disabled.

You don't need an upgrade. A power supply upgrade is always recommended on pre-builts no matter what, but you will be fine until you get the money to upgrade the PSU. The 750/750 Ti were built to be powered by low-performance OEM PSUs.

 

[Max W]

thank you guys for the help with this, i wont be upgrading the PSU, ill give it a try on the 300W, but if it has problems, i will be upgrading to the 430W, thanks guys 😀

 

[HiTechObsessed]

No problem, enjoy your upgrade The 750 Ti is a heck of a card.

 

[ko888]

Does your HP Pavilion p7-1430 300W power supply have a maximum combined +12 Volt continuous current rating of 20 Amps or greater and also have one 6-pin PCI Express power connector?

 

[HiTechObsessed]

It wouldn't need a PCIe connector, as the card comes with a Molex adapter. And 20A is very high for a 'minimum' for this kind of system. He won't come close to 240w on the +12v rail.