2nd Graphics card makes system act strange

[ScottWood]

Running 2 295x2 makes my whole system act up, it wont boot 100% of the time, when it does it then crashes after a few minutes and reboots, other times i get a blue screen saying "Thread_Stuck_IN_Device_Driver" at this point im lost at first i thought it was the drivers but at the same time it makes they system act weird such as changing the colours of the leds ect... i have reinstalled windows and the drivers multiple times too...

I have a 1600w EVGA G2  

Gigabyte Z270x Gaming 8

Skylake I7 6700k

  

Any ideas whats causing this any help is greatly appreciated! 

[Mr.Meerkat]

Have you tried running both 295x2 separately? 

 

edit: Fack, forgot the reasoning...

Testing them separately would allow you to make sure its not something to do with one of the cards being dud  

[ScottWood]

9 minutes ago, Mr.Meerkat said:

Have you tried running both 295x2 separately? 

 

edit: Fack, forgot the reasoning...

Testing them separately would allow you to make sure its not something to do with one of the cards being dud  

Yeah they both run perfectly alone

[RS2007GOD]

I no nothing bout them but isn't the 295 2 gpus in one card meaning you'd effectly be running quad crossfire? Sounds like a nightmare lol

[ScottWood]

Just now, RS2007GOD said:

I no nothing bout them but isn't the 295 2 gpus in one card meaning you'd effectly be running quad crossfire? Sounds like a nightmare lol

yeah it is 

[Mr.Meerkat]

1 minute ago, RS2007GOD said:

I no nothing bout them but isn't the 295 2 gpus in one card meaning you'd effectly be running quad crossfire? Sounds like a nightmare lol

Yep, quadfire  

 

8 minutes ago, ScottWood said:

Yeah they both run perfectly alone

When you were testing them alone, did you test them in the second PCIe slot? Maybe that's a bad slot? 

[ScottWood]

Just now, Mr.Meerkat said:

Yep, quadfire  

 

When you were testing them alone, did you test them in the second PCIe slot? Maybe that's a bad slot? 

yeah i tested one in each slot.

[RS2007GOD]

5 minutes ago, ScottWood said:

yeah it is 

Lol.. Have you seen guides to see if this is even possible? What is your mobo? You may be running low of pcie lanes. Like I said not sure how they work but if your board has 8x and 4x lanes Crossfire would be forced to run as 4x on both lanes providing you with a very bad experience and probably loss of performance even if it worked. I have this issue on my asrock board.

[RS2007GOD]

Just now, RS2007GOD said:

Lol.. Have you seen guides to see if this is even possible? What is your mobo? You may be running low of pcie lanes. Like I said not sure how they work but if your board has 8x and 4x lanes Crossfire would be forced to run as 4x on both lanes providing you with a very bad experience and probably loss of performance even if it worked. I have this issue on my asrock board.

 

[ScottWood]

Just now, RS2007GOD said:

Lol.. Have you seen guides to see if this is even possible? What is your mobo? You may be running low of pcie lanes. Like I said not sure how they work but if your board has 8x and 4x slow the. Crossfire would be forced to run as 4x on both slows providing you with a very bad experience and probably loss of performance even if it worked. I have this issue on my asrock board.

Yeah its certainly possiable, Im running a Gigabyte Aorus GA-z270x Gaming 8.

How would i tell if im running low on pcie lanes and how would i free some, seems like i dumb question i know 

[Mr.Meerkat]

Just now, ScottWood said:

yeah i tested one in each slot.

So not a motherboard/PCIe slot problem...

Shouldn't be a one-time software problem (as you've reinstalled everything multiple times)

Shouldn't be a GPU issue

Shouldn't be a PSU issue (as you're not even booting into the system)

 

Maybe RAM? o_O 

 

1 minute ago, RS2007GOD said:

Lol.. Have you seen guides to see if this is even possible? What is your mobo? You may be running low of pcie lanes. Like I said not sure how they work but if your board has 8x and 4x slow the. Crossfire would be forced to run as 4x on both slows providing you with a very bad experience and probably loss of performance even if it worked. I have this issue on my asrock board.

It's AMD...the manufacturer that allows you to crossfire "different" (but same core) GPUs  

 

I mean with AMD, you can effectively SLI a 690 (295x2), a 680 (290X) and a 770 (390/390X) together...

Also 290X/295x2s are supposed to be quadfire capable. 

 

1 minute ago, ScottWood said:

Yeah its certainly possiable, Im running a Gigabyte Aorus GA-z270x Gaming 8.

How would i tell if im running low on pcie lanes and how would i free some, seems like i dumb question i know 

Both slots should be running at 8X which is enough for the 295  

On a side note, you can crossfire AMD cards on PCIe 3.0 4x slots so...even if each "290X core" is only given 4 lanes each, it should work. 

[RS2007GOD]

Just now, ScottWood said:

Yeah its certainly possiable, Im running a Gigabyte Aorus GA-z270x Gaming 8.

How would i tell if im running low on pcie lanes and how would i free some, seems like i dumb question i know 

That's a good board. Basicly add up all your pcie devices like m.2 ssds wifi cards gpus etc then fine out how many your board has per slot. It varys between different boards. M.2 ssd use 4 lanes Gpus generaly can use 4 8 or 16. 

[ScottWood]

Just now, RS2007GOD said:

That's a good board. Basicly add up all your pcie devices like m.2 ssds wifi cards gpus etc then fine out how many your board has per slot. It varys between different boards. M.2 ssd use 4 lanes Gpus generaly can use 4 8 or 16. 

I Have a the 2 gpus one in 8x and one in 16x and a intel 750 series pcie ssd in a 4x thats all 

[Mr.Meerkat]

2 minutes ago, RS2007GOD said:

That's a good board. Basicly add up all your pcie devices like m.2 ssds wifi cards gpus etc then fine out how many your board has per slot. It varys between different boards. M.2 ssd use 4 lanes Gpus generaly can use 4 8 or 16. 

M.2 and 1x slots uses chipset PCIe lanes, not CPU lanes  

The only slots that usually use CPU lanes are PCIe 16X slots (regardless electrically or the actual slot). 

 

1 minute ago, ScottWood said:

I Have a the 2 gpus one in 8x and one in 16x and a intel 750 series pcie ssd in a 4x thats all 

Ah rip...you're stealing 4 lanes from one of the GPUs  

 

What are the chances you can test it without the 750? 

 

Edit: Should say it shouldn't matter however

[ScottWood]

3 minutes ago, Mr.Meerkat said:

So not a motherboard/PCIe slot problem...

Shouldn't be a one-time software problem (as you've reinstalled everything multiple times)

Shouldn't be a GPU issue

Shouldn't be a PSU issue (as you're not even booting into the system)

 

Maybe RAM? o_O 

 

It's AMD...the manufacturer that allows you to crossfire "different" (but same core) GPUs  

 

I mean with AMD, you can effectively SLI a 690 (295x2), a 680 (290X) and a 770 (390/390X) together...

Also 290X/295x2s are supposed to be quadfire capable. 

 

Both slots should be running at 8X which is enough for the 295  

On a side note, you can crossfire AMD cards on PCIe 3.0 4x slots so...even if each "290X core" is only given 4 lanes each, it should work. 

The ram is stable ive used it for about a year in a diffrent system so i cant think that would be an issue if so why would it only trigger when im running in crossfire?

[ScottWood]

Just now, Mr.Meerkat said:

M.2 and 1x slots uses chipset PCIe lanes, not CPU lanes  

The only slots that usually use CPU lanes are PCIe 16X slots (regardless electrically or the actual slot). 

 

Ah rip...you're stealing 4 lanes from one of the GPUs  

 

What are the chances you can test it without the 750? 

Ahh using the 750 as a boot drive  

[RS2007GOD]

3 minutes ago, Mr.Meerkat said:

Both slots should be running at 8X which is enough for the 295  

On a side note, you can crossfire AMD cards on PCIe 3.0 4x slots so...even if each "290X core" is only given 4 lanes each, it should work. 

Yep if he had a lownend mobo like it could been a problem. My b150 in crossfire runs in 4x and is pretty poor gains and stutters

[ScottWood]

Just now, ScottWood said:

Ahh using the 750 as a boot drive  

Could clone the 750 to a sata ssd then boot and see what happens?

[Mr.Meerkat]

Just now, ScottWood said:

Ahh using the 750 as a boot drive  

You have any other drives lying around? 

 

Just now, RS2007GOD said:

Yep if he had a lownend mobo like it could been a problem. My b150 in crossfire runs in 4x and is pretty poor gains and stutters

But the important thing is it still works  

[ScottWood]

Just now, Mr.Meerkat said:

You have any other drives lying around? 

 

But the important thing is it still works  

Yeah ill install windows on the other one now wont be long... I hope...

[ScottWood]

31 minutes ago, Mr.Meerkat said:

You have any other drives lying around? 

 

But the important thing is it still works  

it didnt work  booted to the lock screen, once i unlocked it it just kept rebooting 

[Mr.Meerkat]

Just now, ScottWood said:

it didnt work  booted to the lock screen, once i unlocked it it just kept rebooting 

Dunno then...sorry  

[ScottWood]

1 minute ago, Mr.Meerkat said:

Dunno then...sorry  

damn

[ScottWood]

8 minutes ago, Mr.Meerkat said:

Dunno then...sorry  

just put it back to its orginal state its booted and working but one gpu is disabled and half the leds on the mob are not working

[Mr.Meerkat]

Just now, ScottWood said:

just put it back to its orginal state its booted and working but one gpu is disabled and half the leds on the mob are not working

Ermmm...rip?