970 Sli troubles

[Nuclear Pebble]

I recently got a second 970 for my set-up but as i was messing around with 3D Mark i noticed a lot of blue/green lines popping up and I'm not sure what is causing it. Also in the tomb raider benchmark her hair was teleporting back and forth rather than being smooth, i didnt notice it before. Lastly, I didn't notice much help in GTA V during the night and rain i was still only getting 40-50 FPS, I was getting the same with my single 970.

 

Also, currently my top card is reaching the upper 80's as i dont have a spaced SLI bridge, how much would a space SLI bridge help cooling?

 

 

 

 

Intel i7-4790k

Gigabyte GA-Z87X-OC-Force

4xGB DDR3 1866 G.skill ripjawx

ASUS Strix 970

ASUS Strix 970

corsair HX750

1TB HDD 

250GB samsung evo ssd(not pro)

Windows 7 64bit

[Nuclear Pebble]

Well, blocking the airflow can trap heat.  And, trapping heat can make a card heat up.

Well of course, i was just asking what people think.

[Nuclear Pebble]

Try and get a longer bridge if that's the issue.  Otherwise you're going to end up killing one or both cards from heat damage.

am working on that right now, but i dont think heat is causing the mess ups in 3D mark, tomb raider, and lack of fps increase in GTA V

[0x1e]

I personally don't think it's heat. 80C is fine TBH. It's a possibility but I don't think it's the issue.

 

Have you tried the second card (new card) on its own? Sure it works?

[Nuclear Pebble]

I personally don't think it's heat. 80C is fine TBH. It's a possibility but I don't think it's the issue.

 

Have you tried the second card (new card) on its own? Sure it works?

No not yet, i should turn off a PCIe lane and try it. 

[Nuclear Pebble]

I personally don't think it's heat. 80C is fine TBH. It's a possibility but I don't think it's the issue.

 

Have you tried the second card (new card) on its own? Sure it works?

Alright after testing each card... The bottom(new) 970 Strix got a score of 5918 graphics score in fire strike extreme with temps around 65-70 C. The top(old) 970 strix got a graphics score of 5000 reaching up to 80 C. An overall difference of about 18.4%. Before i got the new card the old one got a graphics score of 5781 and reached around 65-70 C also. Neither card got any artifcating or blue lines. Currently at idle there is a 10 C difference between the two. The top(old) one is at about 45 C, and the bottom(new) one is at about 35 C.

 

***both cards have an overclock of +145.

 

Edit: Tried to do 3D Mark again with SLI on, the blue lines came back at the 2nd graphics run, max temp at 80, second card at 66.

[0x1e]

Alright after testing each card... The bottom(new) 970 Strix got a score of 5918 graphics score in fire strike extreme with temps around 65-70 C. The top(old) 970 strix got a graphics score of 5000 reaching up to 80 C. An overall difference of about 18.4%. Before i got the new card the old one got a graphics score of 5781 and reached around 65-70 C also. Neither card got any artifcating or blue lines. Currently at idle there is a 10 C difference between the two. The top(old) one is at about 45 C, and the bottom(new) one is at about 35 C.

 

***both cards have an overclock of +145.

 

Edit: Tried to do 3D Mark again with SLI on, the blue lines came back at the 2nd graphics run, max temp at 80, second card at 66.

You're running the cards in SLI with an overclock?

Have you tried them on stock with SLI?

 

Stock overclocks normally don't pass over to SLI overclocks very well. Well from my experience anyway.