New video card problems

[NO_cosPI]

Hello guys!

So, I have this problem: I added a new VGA (an R9 390) to my rig, and my PC simply does not detect it. The card is connected to the power source (with a 6 PIN), so it should be getting enough power, but it simply does not display it. I have already tried the following: I checked BIOS VGA priority, and it was on PCI (not internal graphics), so that should be OK. I checked whether the power source was strong enough (I put the CPU and motherboard on a seperate power source and put the VGA on my proper, 500 W model), but it didn't help either. I also made a run with my old relic, an ATI x-600, just to make absolutely sure that the power was enough and the same thing: it was producing heat, but didn't show up in the Device Manager or GPU-Z. So I ask you guys, what else should I try? 

[refinedskillz]

You put 1 6 pin? I swear you need 1 6 pin and 1 8 pin.

[FilipSebik]

and r9 390 needs 750W PSU

 

EDIT: or 650W

[Arc_Jester]

You need to plug in a 6 pin and a 8 pin.

[Brennan Price]

Not enough power to your GPU.

[Sack]

Hello guys!

So, I have this problem: I added a new VGA (an R9 390) to my rig, and my PC simply does not detect it. The card is connected to the power source (with a 6 PIN), so it should be getting enough power, but it simply does not display it. I have already tried the following: I checked BIOS VGA priority, and it was on PCI (not internal graphics), so that should be OK. I checked whether the power source was strong enough (I put the CPU and motherboard on a seperate power source and put the VGA on my proper, 500 W model), but it didn't help either. I also made a run with my old relic, an ATI x-600, just to make absolutely sure that the power was enough and the same thing: it was producing heat, but didn't show up in the Device Manager or GPU-Z. So I ask you guys, what else should I try? 

Is your GPU (not VGA) even getting power from the PSU?

[Ddave]

and r9 390 needs 750W PSU

 

EDIT: or 650W

 

I'm running with a 520W. Your argument is invalid. LOL

 

snip

 

 

Anyways, what R9 390 do you have ? You sure you only need 1 6pin to power that ? 

Or drivers maybe ?

[Arc_Jester]

and r9 390 needs 750W PSU

 

EDIT: or 650W

500W is enough but anywhere around 550W is good for a 390.

[Sack]

500W is enough but anywhere around 550W is good for a 390.

He's using 2 PSUs he's got more than enough power as long as he can get them both to power his components

[FilipSebik]

 

I'm running with a 520W. Your argument is invalid. LOL

 

 

 

Anyways, what R9 390 do you have ? You sure you only need 1 6pin to power that ? 

Or drivers maybe ?

 

500W is enough but anywhere around 550W is good for a 390.

wow so with 700W iam OK to crossfire r9 390?

[Arc_Jester]

He's using 2 PSUs he's got more than enough power as long as he can get them both to power his components

I was just saying to FilipSebik that a 390 only needs about a 550W PSU.

wow so with 700W iam OK to crossfire r9 390?

Two 390s will need about a 800-850W PSU or more if plan to push the system to the limit.

[FilipSebik]

I was just saying to FilipSebik that a 390 only need about a 550W PSU.

Two 390s will need about a 800-850W PSU or more if plan to push the system to the limit.

k

[NO_cosPI]

Yea maybe the power wouldn't be enough IF the card would use it up. but it doesn't. It doesn't even heat, and neither did the X600. It's like as if it wasn't there... Idunno, kinda strange, but I'll try it with a better PSU.

[Arc_Jester]

-snip-

As was said before, did you plug a 6 pin and a 8 pin into the 390?

[NO_cosPI]

The SPU has only 6 PIN, so no, that could be the problem, but it still wouldn't explain why the other card doesn't work (it is functional). Also shouldn't GPU-Z just display the device? Anyways, thanks for the help, guys.

[Arc_Jester]

-snip-

The card won't work properly without all of it's power connections(a 390 requires a 6 and a 8 pin to work). Why did you get a 390 but not a proper PSU to run it with? You will need a new PSU either way.

[Sack]

The SPU has only 6 PIN, so no, that could be the problem, but it still wouldn't explain why the other card doesn't work (it is functional). Also shouldn't GPU-Z just display the device? Anyways, thanks for the help, guys.

if it doesn't get enough juice it won't show up in the device manager