Overclock.net › Forums › Graphics Cards › AMD/ATI › Help with MSI 7970 Lightning Crossfire Overclock
New Posts  All Forums:Forum Nav:

Help with MSI 7970 Lightning Crossfire Overclock

post #1 of 23
Thread Starter 
Hi Guys

After joining this community of AWESOMENESS that helped me achieve my 1st CPU OC of 4.75,
I Once again turn to you guys for some help.

I have tried my hand at an OC on my 2 cards using Afterburner but not really achieving the results I have seen posted by so many other Lightning owners.

Would be a great help if someone could point me in the direction of a detailed OC guide, specifically for Crossfire.
This would hopefully include steps on how the "BLUE LIGHT THINGY" on the back of these cards work.....on or off for overclocking?

Any help would be appreciated.

Thanks Guys

J:thumb:
post #2 of 23
Probably the most detailed article on the Lightnings is the hocp review. Have you looked it over before? It covers all the points you're asking about.


http://www.hardocp.com/article/2012/03/20/msi_r7970_lightning_video_card_review#.UUH3m01cNew


As a general rule of thumb, ya need to test each gpu independently with crossfire off so you can document each cards limits. Once you know the limits you can move backwards from there when both cards are crossfired.
The 3930
(26 items)
 
Junior's 3930
(22 items)
 
DATA/HTPC
(20 items)
 
  hide details  
Reply
The 3930
(26 items)
 
Junior's 3930
(22 items)
 
DATA/HTPC
(20 items)
 
  hide details  
Reply
post #3 of 23
Set core clock to 1300, voltage to 1300mv and fan speed to 75% and test in game. if it crashes start lowering core clock. If it's stable start lowering core voltage till it crashes.
Core I7 5960X
(10 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core I7 5960X ASRock X99 OC Formula MSI GTX 970 Gaming MSI GTX 970 Gaming 
RAMHard DriveCoolingOS
G. Skill 16GB DDR4 2600 Sandisk Extreme II 240GB SSD Custom 480 Water Setup Windows 10 
PowerCase
AX1500I Corsair 900D 
  hide details  
Reply
Core I7 5960X
(10 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core I7 5960X ASRock X99 OC Formula MSI GTX 970 Gaming MSI GTX 970 Gaming 
RAMHard DriveCoolingOS
G. Skill 16GB DDR4 2600 Sandisk Extreme II 240GB SSD Custom 480 Water Setup Windows 10 
PowerCase
AX1500I Corsair 900D 
  hide details  
Reply
post #4 of 23
Thread Starter 
Thanks Dude... wil check it out.
Wife's out tonight so got some Overclocking to do.....
post #5 of 23
Thread Starter 
Quote:
Originally Posted by Stay Puft View Post

Set core clock to 1300, voltage to 1300mv and fan speed to 75% and test in game. if it crashes start lowering core clock. If it's stable start lowering core voltage till it crashes.

What about the memoryclock? Or do I get the core clock stable before I get onto that?
post #6 of 23
Quote:
Originally Posted by jaKalaKn View Post

What about the memoryclock? Or do I get the core clock stable before I get onto that?

Get the core clock all set then you can worry about the memory thumb.gif
Core I7 5960X
(10 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core I7 5960X ASRock X99 OC Formula MSI GTX 970 Gaming MSI GTX 970 Gaming 
RAMHard DriveCoolingOS
G. Skill 16GB DDR4 2600 Sandisk Extreme II 240GB SSD Custom 480 Water Setup Windows 10 
PowerCase
AX1500I Corsair 900D 
  hide details  
Reply
Core I7 5960X
(10 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core I7 5960X ASRock X99 OC Formula MSI GTX 970 Gaming MSI GTX 970 Gaming 
RAMHard DriveCoolingOS
G. Skill 16GB DDR4 2600 Sandisk Extreme II 240GB SSD Custom 480 Water Setup Windows 10 
PowerCase
AX1500I Corsair 900D 
  hide details  
Reply
post #7 of 23
Thread Starter 
Quote:
Originally Posted by tsm106 View Post

Probably the most detailed article on the Lightnings is the hocp review. Have you looked it over before? It covers all the points you're asking about.


http://www.hardocp.com/article/2012/03/20/msi_r7970_lightning_video_card_review#.UUH3m01cNew


As a general rule of thumb, ya need to test each gpu independently with crossfire off so you can document each cards limits. Once you know the limits you can move backwards from there when both cards are crossfired.


Thanks Man
I can go up to CoreCl: 1150. as soon as I try 1200 with power at +20 the card bombs in Cry3.

But like you say find out both card limits and work back from the lowest one.

Cheers.
post #8 of 23
Quote:
Originally Posted by jaKalaKn View Post

Thanks Man
I can go up to CoreCl: 1150. as soon as I try 1200 with power at +20 the card bombs in Cry3.

But like you say find out both card limits and work back from the lowest one.

Cheers.

What vcore are you trying with 1200 core?
Core I7 5960X
(10 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core I7 5960X ASRock X99 OC Formula MSI GTX 970 Gaming MSI GTX 970 Gaming 
RAMHard DriveCoolingOS
G. Skill 16GB DDR4 2600 Sandisk Extreme II 240GB SSD Custom 480 Water Setup Windows 10 
PowerCase
AX1500I Corsair 900D 
  hide details  
Reply
Core I7 5960X
(10 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core I7 5960X ASRock X99 OC Formula MSI GTX 970 Gaming MSI GTX 970 Gaming 
RAMHard DriveCoolingOS
G. Skill 16GB DDR4 2600 Sandisk Extreme II 240GB SSD Custom 480 Water Setup Windows 10 
PowerCase
AX1500I Corsair 900D 
  hide details  
Reply
post #9 of 23
Thread Starter 
Quote:
Originally Posted by Stay Puft View Post

What vcore are you trying with 1200 core?

Standard 1112
post #10 of 23
Quote:
Originally Posted by jaKalaKn View Post

Standard 1112

Need to up the Vcore to get 1200 core stable. Try 1260mv
Core I7 5960X
(10 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core I7 5960X ASRock X99 OC Formula MSI GTX 970 Gaming MSI GTX 970 Gaming 
RAMHard DriveCoolingOS
G. Skill 16GB DDR4 2600 Sandisk Extreme II 240GB SSD Custom 480 Water Setup Windows 10 
PowerCase
AX1500I Corsair 900D 
  hide details  
Reply
Core I7 5960X
(10 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core I7 5960X ASRock X99 OC Formula MSI GTX 970 Gaming MSI GTX 970 Gaming 
RAMHard DriveCoolingOS
G. Skill 16GB DDR4 2600 Sandisk Extreme II 240GB SSD Custom 480 Water Setup Windows 10 
PowerCase
AX1500I Corsair 900D 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › Help with MSI 7970 Lightning Crossfire Overclock