Went SLI, ran into issues

[Tatse]

Hey there.

So recently i added another grapics card to my system, it's the first time i'm using SLI really.

I popped in the card,  added the ATX4P power as recommended in the motherboard manual.

 

But when i booted the PC, it got stuck.

Either at the Motherboard Screen,  the Post thingy with the blinking _  or the Windows loading screen.

This is very persistent and i had no idea what to do,  this issue even started showing with just 1 video card.

Occasionally i can get past the windows loading screen,  just gotta restart it often enough.

 

I also updated my BIOS and re-installed the Nvidia drivers.

Didn't fix anything really.

 

So i turned on SLI, enabled it in the Nvidia control pannel, both are showing up in MSI afterburner and both are getting auto-synced up.

 

 

It feels like the FPS i get with SLI are worse than without SLI though, and i'm a bit at a loss now.

Any help would be appreciated.

 

To give some pointers in regards to FPS:

Playing at 3440x1440 resolution, Titan X SLI

FFXIV: ARR, getting around 100 FPS, but drops to 50 just in battles.

Witcher 3: getting around 40 FPS

Both at maxed out settings.

[Cazzer505]

Some games just hate SLI so if you play those games thats probably why.

It may also not be lower frame rates just a lower minimum fps which causes stuttering and lack of smoothness

[GrimNeo]

@Tatse PC specs and what graphic cards?

[Guest Kloaked]

What are your specs in total OP?

 

 

Some games just hate SLI so if you play those games thats probably why.

It may also not be lower frame rates just a lower minimum fps which causes stuttering and lack of smoothness

 

That has nothing to do with it.

[Cazzer505]

[Tatse]

I7-5820k @ 4.4GHz

HyperX Predator 16GB DDR4 @2666

Titan X SLI

Gigabyte GA-X99-gaming g1 wifi

AX1200 PSU

HyperX 3k SSD for OS

 

 

Windows 7 Ultimate 64-bit

[kfarris]

I would recommend you specify under nvidia control panel go under configure surround, physx. And select Physx settings and select one of the 2 GPUs to be a dedicated Physx card I bet your performance will go up. Also the one you select make sure its not the one your running the display off of preferably..

[Tatse]

So,  i tried that, selecting the GPU that's not connected to the display as Physx one.

Didn't really change anything, as it was doing that by default already anyway.

 

Disabled SLI:

FPS in FFXIV ARR went from 100ish to 75ish.   At boss fights from 50ish to 75ish,  i know this is due to a wall that appears to lock off the arena.

FPS in Witcher 3 went from 40ish to 45ish.

 

So, seems like something is really wrong to me

[Tatse]

Even if the FPS was fine, the boot problem still remains.