amd radeon hd 7770 in 15A on 12V rail???

mayank12388 · Nov 4, 2014

I have a 450w samps which is 15A on 12V rail . i want to buy an amd radeon hd 7770 for my new rig. So my question is can i run that gfx card on that smps..

Trave · Nov 4, 2014

brand of the PSU?

bicycle_repair_man · Nov 4, 2014

Your PSU must have multiple 12V rails, otherwise it would only be supplying around 180W (ampere x voltage). Which make and model PSU do you have?

mayank12388 · Nov 4, 2014

I have a zebronics 450w psu..

bicycle_repair_man · Nov 4, 2014

That PSU delivers 16A on the +12V rail, giving you around 192W. This isn't nearly good enough, unfortunately. Depending on which HD 7770 you go for, you may also need a PCIe connector, which the PSU doesn't seem to have either.

mayank12388 · Nov 4, 2014

bicycle_repair_man :

I am going to buy a sapphire amd radeon hd 7770...Hope this can help
please reply

bicycle_repair_man · Nov 4, 2014

The card needs a PCIe power connector, which the PSU doesn't have. Even if it did, 192W of power for your entire PC would still hold you back. The card won't work at all.

Trave · Nov 4, 2014

Well your PSU does not have any PCIe connector which is needed for a HD 7770, you may consider getting a new decent PSU or probably get a HD 7750 which doesn't need a PCIe connector so you can stick with your current PSU,its a little bit weaker than a HD 7770 though, or maybe if you have extra money and you want a better card than the 7750, get that GTX 750 which doesn't need a PCIe connector.

mayank12388 · Nov 4, 2014

Trave :

What do you mean by a pcie connecter can you send me a pic of that please
thanks for reply

bicycle_repair_man · Nov 4, 2014

https://www.google.co.uk/search?q=pcie+connector&biw=1600&bih=763&source=lnms&tbm=isch&sa=X&ei=hepYVOHxB4Lb7AaL8IGoDw&ved=0CAYQ_AUoAQ#facrc=_&imgdii=_&imgrc=hntvsEI1dU7fsM%253A%3BtZTyX52imEhDIM%3Bhttp%253A%252F%252Fguyfromit.com%252Fwp-content%252Fuploads%252F2014%252F05%252Fpcie.jpg%3Bhttp%253A%252F%252Fguyfromit.com%252Fpower-connections-types%252F%3B600%3B359

Trave · Nov 4, 2014

Well the PCIe connector is a cable in a PSU where you put it in a GPU because it needs more power and well as I search your PSU, your PSU don't have it, so options are get a new decent PSU and get the 7770 or greater card or get a card which doesn't need a power from the PSU like HD 7750 and gtx 750

mayank12388 · Nov 4, 2014

bicycle_repair_man :

does this gfx card requires pin connectors and can i run it: http://www.flipkart.com/zotac-nvidia-gtx-750ti-2-gb-ddr5-graphics-card/p/itmdtth6ymguyapq

thanks
please reply

bicycle_repair_man · Nov 4, 2014

That GPU doesn't need a PCIe connector, but like I said, you're installing this in a PC that only has around 192W of available power. Whilst it COULD work, you'll be placing high loads on the PSU which will end up killing it. The GPU alone uses almost 33% of the available power.

mayank12388 · Nov 4, 2014

bicycle_repair_man :

I respect your answer sir so i have make the decision to choose a better branded psu for my new rig...So is this psu is good to buy:http://www.flipkart.com/corsair-vs450-450-watt-psu/p/itmdbfa3kaffmum3?pid=PSUDBF9ZBHSJVGJ8&srno=b_3&ref=b37a9b77-ab47-40d6-b37c-679940f261e2

thank you
please reply....

Trave · Nov 4, 2014

I really think the 7770 really needs the PCIe connector http://www.tomshardware.com/forum/344673-33-7770-connector, but your getting a branded PSU huh, so no problem there. Good Luck!

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amd radeon hd 7770 in 15A on 12V rail???

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