Overclock.net › Forums › Graphics Cards › AMD/ATI › Help with crossfire random stuttering
New Posts  All Forums:Forum Nav:

Help with crossfire random stuttering - Page 7

post #61 of 68
Quote:
Originally Posted by Moltar View Post
Its not math. Its problem with the 5xxx cards. Ive been running 3 displays while gaming for a few years. I've done more methods than most people know exist on this site. Do you want to explain to me how you get 6 FPS with 3 5870's in TriFire on Crysis? Or, why you get 4 FPS with 2 5970's in QuadFire? Thats 3GB/4GB's of Vram respectively. I don't think Vram is the problem.
You don't even know how the vram is used in cfx it seems?
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 #62 of 68
Quote:
Originally Posted by tsm106 View Post
You don't even know how the vram is used in cfx it seems?
Explain it than and why did the problem seemingly vanish in the 6xxx series cards? And while your at it, explain to me why you get 3-4 times the FPS with a single 5870 at the same resolution? I understand that the main Vram being utilized is the primary cards.

So, before you started going all high and mighty, read the entire thread instead of just replying to the most recent posts as this has already been covered.
Edited by Moltar - 4/4/11 at 9:50am
post #63 of 68
Quote:
Originally Posted by Moltar View Post
Its not math. Its problem with the 5xxx cards. Ive been running 3 displays while gaming for a few years. I've done more methods than most people know exist on this site. Do you want to explain to me how you get 6 FPS with 3 5870's in TriFire on Crysis? Or, why you get 4 FPS with 2 5970's in QuadFire? Thats 3GB/4GB's of Vram respectively. I don't think Vram is the problem.
Quote:
Originally Posted by Moltar View Post
Explain it than and why did the problem seemingly vanish in the 6xxx series cards?
In cfx you don't get to add memory together, there's no such thing as 3gb or 4gb respectively. The available vram is the amount on one card mirrored so all the vram the cards have is 1gb to display all the pixels from eyefinity. The very moment you turn on any AA, you choke your cards, period.

69xx cards have 2gb vram, because 5xxx people complained about being vram choked. AMD fixed this problem.
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 #64 of 68
Quote:
Originally Posted by tsm106 View Post
In cfx you don't get to add memory together, there's no such thing as 3gb or 4gb respectively. The available vram is the amount on one card mirrored so all the vram the cards have is 1gb to display all the pixels from eyefinity. The very moment you turn on any AA, you choke your cards, period.

69xx cards have 2gb vram, because 5xxx people complained about being vram choked. AMD fixed this problem.
I edited that post before you posted. Re-read it please.
post #65 of 68
Thread Starter 
I resolved one problem. Now this is the main problem:

Crossfire ENABLED
5670x1080
Very stuttery and fps dips are very frequent

Crossfire DISBALED
5670x1080
Not stuttery, and fps is very consistent

So it's not a vram issue
post #66 of 68
this used to happen to my uncle i would maybe say bad PSU
Black
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3770k @4.8 Asus Maixums V Formula Evga 970FTW 4GB G.Skill 16GB 1866MHZ 8-9-9-24 
Hard DriveCoolingOSMonitor
Samsung 840pro 128GB XSPC RX360 W7 Samsung SyncMaster T260HD 
KeyboardPowerCaseMouse
Logitech G19 Corsair TX850M Corsair 800D Logitech G303 
Mouse PadAudio
Mionix Propus360 Creative X-Fi Titanium HD 
  hide details  
Reply
Black
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3770k @4.8 Asus Maixums V Formula Evga 970FTW 4GB G.Skill 16GB 1866MHZ 8-9-9-24 
Hard DriveCoolingOSMonitor
Samsung 840pro 128GB XSPC RX360 W7 Samsung SyncMaster T260HD 
KeyboardPowerCaseMouse
Logitech G19 Corsair TX850M Corsair 800D Logitech G303 
Mouse PadAudio
Mionix Propus360 Creative X-Fi Titanium HD 
  hide details  
Reply
post #67 of 68
Quote:
Originally Posted by kiwiasian View Post
I resolved one problem. Now this is the main problem:

Crossfire ENABLED
5670x1080
Very stuttery and fps dips are very frequent

Crossfire DISBALED
5670x1080
Not stuttery, and fps is very consistent

So it's not a vram issue
I would bet, that it is a problem with either the architecture of the card or a problem with the driver not playing nice with certain games. Both of which are only apparent when Eyefinity is on. The problem vanished when I switched over to nVidia, at the point in time I was testing, I was running 470's in SLI. So, the Vram is the same on both the 5xxx and the 470.

Try this, disable Eyefinity and use a nifty program instead. Its called Softh. Lets try and take Eyefinity out of the equation. Softh is a program that does much of the same things that Eyefinity does. It will allow you to play your games across all 3 screens.

If your performance increases we can than determine that the issue is related to Eyefinity in some way, either driver or hardware related.
Edited by Moltar - 4/4/11 at 9:57am
post #68 of 68
Hey Guys,

I am running 2 x 5870 and having EXACT same issue as him.

I also found this which seems to be the same prob as well.

I am running 11.4 with latest CAPS for it.

Surly if 3 people are having the issue then other must be too?

And I get the problem even if I take both my card to 1.1Ghz (Aint got the balls to go further) and it does not go below 51FPS so I don't think its the cards not having enough power either :/

Oh and sorry if I am hijacking thread (If so I am sure mod will delete anyway)
Gaming Rig
(14 items)
 
  
CPUMotherboardGraphicsGraphics
i7 930 @ 4.2ghz @ 1.275vcore Rampage 3 Extreme Asus 6950 DCUII Asus 6950 DCUII 
RAMHard DriveOptical DriveOS
2000mhz Dom Gt's cl8 (3 Internal) 2 x 250GIG Samsung 7200RPM, 1 x 2TB W LG DVD-RW Windows 7 64bit 
MonitorKeyboardPowerCase
SyncMaster P2250 (1920x1080) Razer Nostromo Coolermaster 1250W Cosmos II 
MouseMouse Pad
RAT 7 GLIDE 7 
  hide details  
Reply
Gaming Rig
(14 items)
 
  
CPUMotherboardGraphicsGraphics
i7 930 @ 4.2ghz @ 1.275vcore Rampage 3 Extreme Asus 6950 DCUII Asus 6950 DCUII 
RAMHard DriveOptical DriveOS
2000mhz Dom Gt's cl8 (3 Internal) 2 x 250GIG Samsung 7200RPM, 1 x 2TB W LG DVD-RW Windows 7 64bit 
MonitorKeyboardPowerCase
SyncMaster P2250 (1920x1080) Razer Nostromo Coolermaster 1250W Cosmos II 
MouseMouse Pad
RAT 7 GLIDE 7 
  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 crossfire random stuttering