New GPU doesnt work

savato · 8 Aug 2013 at 18:37

Hello my VTX 7870 arrived today and after plugging it in to my pc i turned my pc on to find that the card doesnt display a signal, the fan spins but it doesnt display anything, the PSU i have is the OCZ 500W Stealth2Extreme so i dont have 2 lots of 6 pins, only 1 lot.

Anyone know if its the PSU that is the problem? my previous card was a 6850

teppic · 8 Aug 2013 at 18:44

Have you used an adapter for the other 6 pin PCI-E socket? If you've only plugged one in, it won't work.

ExRayTed · 8 Aug 2013 at 18:47

You are plugging both 6 pin connectors into the card right?

Assuming so, try resetting the CMOS.

The rest of your spec would help determine if the power supply is up to the task.

savato · 8 Aug 2013 at 18:51

my PSU only has one 5 pin PCI-E plug, so iv got nothing to stick in the other slot

teppic · 8 Aug 2013 at 18:53

You need something like this:

http://virtuapin.net/images/adapter-2x-molex-6pin.jpg

edit:

http://www.overclockers.co.uk/showproduct.php?prodid=CB-018-AK

(Are you sure the card didn't come with one?)

ExRayTed · 8 Aug 2013 at 18:55

savato said:
my PSU only has one 5 pin PCI-E plug, so iv got nothing to stick in the other slot

Then it won't work. They are there for a reason. Get a molex to 6pin adapter cable.

pastymuncher · 8 Aug 2013 at 18:59

You card should have came with a molex to pci-e adaptor. You need to use that as well as the psu's own 6 pin pci-e plug.

savato · 8 Aug 2013 at 19:01

the card came with the actual card, a disc, a tiny black adaptor thing in which doesnt go into the 6 pin slot and a instructions booklet, that was it

teppic · 8 Aug 2013 at 19:03

If it doesn't come with one, you'll need to get an adapter. You can't use it until it's powered properly.

savato · 8 Aug 2013 at 19:11

Are molex's reliable or am i just better of buying a new PSU

teppic · 8 Aug 2013 at 19:15

It should be fine with one adapter. Replacing the PSU is a bit drastic unless you want a new one anyway.

savato · 8 Aug 2013 at 19:16

which adapter should i get from overclockers, when i search for molex a tonne of them come up

Grimley · 8 Aug 2013 at 19:25

Take your pick.

YOUR BASKET
1 x Akasa PCI Express 6-Pin to 4-Pin Power Adaptor for PCI-E Graphics Cards (AK-CB4-6) £3.59
1 x OcUK Value PCI Express 6-Pin to 4-Pin Power Adaptor for PCI-E Graphics Cards (RB-527) £1.99
Total : £8.56 (includes shipping : £2.48).

savato · 8 Aug 2013 at 19:29

will those work with my PSU though? its the OCZ Stealth2Extreme 500W

Akagi · 8 Aug 2013 at 19:32

Does your PSU have two molex connectors coming from the PSU? Yes it does. So yes it will.

The StealthXstream 2 is just about up to the task, it will be fine.

Grimley · 8 Aug 2013 at 19:34

It should do. Spec of the card recommends a 500W psu or greater.

savato · 8 Aug 2013 at 19:34

acme15 said:
Does your PSU have two molex connectors coming from the PSU? Yes it does. So yes it will.

The StealthXstream 2 is just about up to the task, it will be fine.

ok thanks, il get one of those molex's

scotsdragon · 8 Aug 2013 at 19:37

Next time you buy a card you should make sure your psu can handle both the demand and has the required connectors its n easy mistake to make.

savato · 8 Aug 2013 at 19:44

i know that now, someone actually recommended it me on this forum without telling me i couldnt run it -_-

Potty27 · 8 Aug 2013 at 20:30

I recommended it to you, based on what you told us:

savato said:
yea guys im pretty sure my PSU is this http://www.overclockers.co.uk/showproduct.php?prodid=CA-055-OC

I'm afraid it's not our fault if you cant read the label on your PSU.