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3870 OCing. Is this right?????

post #1 of 20
Thread Starter 
I've been having issues with the latest ATI drivers(games freezing and so forth 8.4 driver) I lowered my CPU OC back to stock and was still having issues and Vista determined it was a driver issue. I also had problems uninstalling the driver, but I finally got that solved.
So I installed the new 8.5 drivers today and everything seems OK.
However when OCing my 2 3870's I found something strange. I could get my core up to 860( GPUz reads it at 859, ATItool -857)
Then I started bumping up the memory. I started at 1200, and ran furmarkv 1.3 at every 5 MHz higher.( I also did this for the core)
Unlike when I did the core (Which went up several times during testing) I got the same score at 860/ 1200 and 860/1360.
I used this benchmark because it's fast and in the past it found certain combinations worked much better than others. That was the former version though. This is using the new version.
Has anyone tried using this version and does this sound right? It seems bizarre to me.
I didn't try 3DMark 06 because it takes longer and it's also testing the CPU also and I am trying to isolate my 3870s.
Here's the SS. ATITool is reading the first SS wrong look at GPUz instead.

G0
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G0
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post #2 of 20
Umm what's your question?
Mighty-iTX
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Mighty-iTX
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post #3 of 20
Havent used furmark - but am now going to
Are you only using CCC to overclock them?
Nice clocks also
What 3dmark do you get? - 3dmark is a good test as it will sometimes crash if cards are slightly unstable, when other tests wont - so do a 3dmark every now and then [only takes about 8 minutes]

Also, as you are running vista, does ATitool's little 3d window work for you - or does atitool crash the instant you open it?
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post #4 of 20
Thread Starter 
Quote:
Originally Posted by grunion View Post
Umm what's your question?
Does this sound right? Raising the memory from 1200 to 1366 and getting no increase in FPS? Isn't that odd? Or isn't it? I thought it wasn't right.
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G0
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post #5 of 20
The memory won't add much change in FPS, core clocks is what will make the increase
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My System
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Samsung 840 Pro 256gb | 3*3TB Raid 5 | Corsair F60 Windows 8 x64 *EYEFINITY* Dell 2405FPW + 2*E248WFP Logitech Illuminated 
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post #6 of 20
Thread Starter 
Quote:
Originally Posted by scottath View Post
Havent used furmark - but am now going to
Are you only using CCC to overclock them?
Nice clocks also
What 3dmark do you get? - 3dmark is a good test as it will sometimes crash if cards are slightly unstable, when other tests wont - so do a 3dmark every now and then [only takes about 8 minutes]

Also, as you are running vista, does ATitool's little 3d window work for you - or does atitool crash the instant you open it?
ATItool works good, not great. I can scan for artifacts with it if that's what you're asking.
Was trying to see how high I could get, but didn't want to wait for 3DMark06 to run and I've got to re OC my CPU first.
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G0
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post #7 of 20
Quote:
Originally Posted by x2s3w4 View Post
ATItool works good, not great. I can scan for artifacts with it if that's what you're asking.
Interesting, if i open the scanning "cube" window, atitool crashes instantly.....
My System
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i7 4771 GA-Z87X-UD3H 2*HD5850 4gb G.Skill Ripjaw + 8gb Corsair XMS3 1600 cl8 
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My System
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CPUMotherboardGraphicsRAM
i7 4771 GA-Z87X-UD3H 2*HD5850 4gb G.Skill Ripjaw + 8gb Corsair XMS3 1600 cl8 
Hard DriveOSMonitorKeyboard
Samsung 840 Pro 256gb | 3*3TB Raid 5 | Corsair F60 Windows 8 x64 *EYEFINITY* Dell 2405FPW + 2*E248WFP Logitech Illuminated 
PowerCaseMouseAudio
Corsair HX-850v2 Lian Li v2010b M$ Basic  Asus Xonar D2X 
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post #8 of 20
Thread Starter 
Quote:
Originally Posted by scottath View Post
The memory won't add much change in FPS, core clocks is what will make the increase
I know, but I thought I'd get a little more out of it. Meh!
G0
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G0
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post #9 of 20
Thread Starter 
Quote:
Originally Posted by scottath View Post
Interesting, if i open the scanning "cube" window, atitool crashes instantly.....
I had that several times in Vista. I only fixed it by reinstalling Vista.
G0
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PC Power & Cooling Silencer 750 Quad Cheap 
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G0
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post #10 of 20
Quote:
Originally Posted by x2s3w4 View Post
I had that several times in Vista. I only fixed it by reinstalling Vista.
Not really in a hurry to do that atm
My System
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CPUMotherboardGraphicsRAM
i7 4771 GA-Z87X-UD3H 2*HD5850 4gb G.Skill Ripjaw + 8gb Corsair XMS3 1600 cl8 
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Samsung 840 Pro 256gb | 3*3TB Raid 5 | Corsair F60 Windows 8 x64 *EYEFINITY* Dell 2405FPW + 2*E248WFP Logitech Illuminated 
PowerCaseMouseAudio
Corsair HX-850v2 Lian Li v2010b M$ Basic  Asus Xonar D2X 
AudioAudio
Swan D1080 MK II 08  Shure SRH-440 
  hide details  
Reply
My System
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 4771 GA-Z87X-UD3H 2*HD5850 4gb G.Skill Ripjaw + 8gb Corsair XMS3 1600 cl8 
Hard DriveOSMonitorKeyboard
Samsung 840 Pro 256gb | 3*3TB Raid 5 | Corsair F60 Windows 8 x64 *EYEFINITY* Dell 2405FPW + 2*E248WFP Logitech Illuminated 
PowerCaseMouseAudio
Corsair HX-850v2 Lian Li v2010b M$ Basic  Asus Xonar D2X 
AudioAudio
Swan D1080 MK II 08  Shure SRH-440 
  hide details  
Reply
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