Radeon HD 7850 help

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dwhalley95

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Jul 22, 2013
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I Built a computer last week and i bought a value tower (which a now regret) from scan, this value tower also came with a 500w psu.

After putting all the pieces into the motherboard, i noticed that the psu doesnt have a PCI E (6 pin) connector. so at some time soon i will need a new psu.

I however i have recently noticed that mym XFX Radeon HD 7850 says it fits in PCI-E 3.0 and my motherboard only has PCI-E 2.0.. does this mean that my motherboard will not take this graphics card?


My computer is an AMD build


my motherboard: GigabyteGA-970A-DS3
http://www.scan.co.uk/shop/computer-hardware/all/motherboards-amd/socket-am3plus-amd-970-990

my graphics card: XFX Radeon HD 7850
http://www.scan.co.uk/products/2gb-xfx-radeon-hd-7850-core-edition-4800mhz-gddr5-28nm-gpu-860mhz-1024-cores-dvi-hdmi-mdp-plusfree-g
 
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All that means is you will not get the performance of 3.0. It is compatible as I have the same card as well. You will need to get a psu with a 6 pin pcie connector. In the box there should be an adapter with a 6 pin pcie connector with a two molex. You can plug in two molexes and power the gpu with that. They put it in the case so people without that connector on the psu can still use the card. I have never tried it, so I don't know how good it is.
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TheBlueSmoke

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Jul 9, 2013
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All that means is you will not get the performance of 3.0. It is compatible as I have the same card as well. You will need to get a psu with a 6 pin pcie connector. In the box there should be an adapter with a 6 pin pcie connector with a two molex. You can plug in two molexes and power the gpu with that. They put it in the case so people without that connector on the psu can still use the card. I have never tried it, so I don't know how good it is.
 
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thedroid123

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Nov 11, 2010
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PCIE 3.0 cards will work with PCIE 2.0 MOBOs so you shouldn't have a problem. Your card is just rated for higher speeds than your MOBO can handle in that slot.

Here is a quick article showing some of the differences between the speeds available with the different PCIE slots.

http://www.techpowerup.com/reviews/Intel/Ivy_Bridge_PCI-Express_Scaling/
 
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dwhalley95

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Jul 22, 2013
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wow thankyou for the quick reply. relieved at your answer, i was thinking i had wasted £155 haha! one more thing.. is 500W enough for my build?

my gpu is the AMD FX 8320 8 core @ 3.5 Ghz
8Gb Ram
DVD RW
500Gb hard drive

is 500w enough or should i go higher seeing as im going to get a new psu asap
 
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