Overclock.net › Forums › Graphics Cards › AMD/ATI › Overclocking a 6870, losing performance?
New Posts  All Forums:Forum Nav:

Overclocking a 6870, losing performance?

post #1 of 17
Thread Starter 
I'm a little confused... My old 9500gt ran ungodly hot, it idled in the 70s, hit 90s under load sometimes.. and I could still overclock it from 550 core to 680 core with no problem, stable and no throttling...

My 6870 idles at 42 usually, and I cant ever get a good load reading but it has a very nice non reference cooler. I overclocked it from 915 core to 945 and this happened

915
http://3dmark.com/3dm05/5393790?show...TaTUTkPS3AR8wy

945
http://3dmark.com/3dm05/5393791?show...dTAM6PkeAkvQ2z

I have trouble believing that its thermal throttling, but I cant think of any other way that would work...

edit: this one btw; http://www.newegg.com/Product/Produc...82E16814125357
Edited by Hobybobag - 7/21/11 at 1:38am
post #2 of 17
Were all your background applications closed? Did you try running benchmarks again? And you didn't really mention what exactly your load temps are. It could be thermal throttling. You may have gotten unlucky and just got an unusually hot chip.
Main Rig
(21 items)
 
Home Theater PC
(12 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3930k Asus P9X79 Pro XFX Radeon HD 6870 XFX Radeon HD 6870 
RAMHard DriveHard DriveOptical Drive
4x4GB DDR3 1600 Corsair Vengeance Series Seagate 1.5TB 7200rpm Western Digital Caviar Blue 500GB 7200rpm Asus Optical Drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Waterblock Black Primochill Tubing 1/2" ID / 3/4" OD XSPC RX240 XSPC Dual Bay Reservoir 
CoolingOSMonitorKeyboard
Swiftech MCP655 Windows 7 Ultimate 64 bit Dell U2410 Das Model S Cherry MX Blue 
PowerCaseMouseMouse Pad
Corsair TX850 NZXT Phantom Gigabyte M8000X Razer Goliathus 
Audio
Logitech X540 
CPUMotherboardGraphicsRAM
AMD Athlon 64 X2 5200+ GA-MA78LM-S2H AMD 760G (Microsoft Corporation WDDM 1.1)  PNY Electronics  
RAMHard DriveOptical DriveCooling
PNY Electronics  Western Digital Caviar Blue Basic DVD Multi Recorder Stock 
OSMonitorPowerCase
Windows 7 Television PC Power & Cooling Silencer Series 500w Silverstone MLO3B 
  hide details  
Reply
Main Rig
(21 items)
 
Home Theater PC
(12 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3930k Asus P9X79 Pro XFX Radeon HD 6870 XFX Radeon HD 6870 
RAMHard DriveHard DriveOptical Drive
4x4GB DDR3 1600 Corsair Vengeance Series Seagate 1.5TB 7200rpm Western Digital Caviar Blue 500GB 7200rpm Asus Optical Drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Waterblock Black Primochill Tubing 1/2" ID / 3/4" OD XSPC RX240 XSPC Dual Bay Reservoir 
CoolingOSMonitorKeyboard
Swiftech MCP655 Windows 7 Ultimate 64 bit Dell U2410 Das Model S Cherry MX Blue 
PowerCaseMouseMouse Pad
Corsair TX850 NZXT Phantom Gigabyte M8000X Razer Goliathus 
Audio
Logitech X540 
CPUMotherboardGraphicsRAM
AMD Athlon 64 X2 5200+ GA-MA78LM-S2H AMD 760G (Microsoft Corporation WDDM 1.1)  PNY Electronics  
RAMHard DriveOptical DriveCooling
PNY Electronics  Western Digital Caviar Blue Basic DVD Multi Recorder Stock 
OSMonitorPowerCase
Windows 7 Television PC Power & Cooling Silencer Series 500w Silverstone MLO3B 
  hide details  
Reply
post #3 of 17
Thread Starter 
They werent all closed, but I had the same ones open both times, and I dont really know what my load temps were, but they shouldnt be that high considering i have the fans on 100% =\\

how would i check load temps? As far as I can tell Speedfan is giving me completely wrong numbers....
post #4 of 17
That's odd. I OC'd my 6870 from 900 to 970 without touching the voltage and performance is notably different in game. I get slightly better FPS.
post #5 of 17
Use Catalyst Control Center to monitor temps.
Main Rig
(21 items)
 
Home Theater PC
(12 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3930k Asus P9X79 Pro XFX Radeon HD 6870 XFX Radeon HD 6870 
RAMHard DriveHard DriveOptical Drive
4x4GB DDR3 1600 Corsair Vengeance Series Seagate 1.5TB 7200rpm Western Digital Caviar Blue 500GB 7200rpm Asus Optical Drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Waterblock Black Primochill Tubing 1/2" ID / 3/4" OD XSPC RX240 XSPC Dual Bay Reservoir 
CoolingOSMonitorKeyboard
Swiftech MCP655 Windows 7 Ultimate 64 bit Dell U2410 Das Model S Cherry MX Blue 
PowerCaseMouseMouse Pad
Corsair TX850 NZXT Phantom Gigabyte M8000X Razer Goliathus 
Audio
Logitech X540 
CPUMotherboardGraphicsRAM
AMD Athlon 64 X2 5200+ GA-MA78LM-S2H AMD 760G (Microsoft Corporation WDDM 1.1)  PNY Electronics  
RAMHard DriveOptical DriveCooling
PNY Electronics  Western Digital Caviar Blue Basic DVD Multi Recorder Stock 
OSMonitorPowerCase
Windows 7 Television PC Power & Cooling Silencer Series 500w Silverstone MLO3B 
  hide details  
Reply
Main Rig
(21 items)
 
Home Theater PC
(12 items)
 
 
CPUMotherboardGraphicsGraphics
i7 3930k Asus P9X79 Pro XFX Radeon HD 6870 XFX Radeon HD 6870 
RAMHard DriveHard DriveOptical Drive
4x4GB DDR3 1600 Corsair Vengeance Series Seagate 1.5TB 7200rpm Western Digital Caviar Blue 500GB 7200rpm Asus Optical Drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Waterblock Black Primochill Tubing 1/2" ID / 3/4" OD XSPC RX240 XSPC Dual Bay Reservoir 
CoolingOSMonitorKeyboard
Swiftech MCP655 Windows 7 Ultimate 64 bit Dell U2410 Das Model S Cherry MX Blue 
PowerCaseMouseMouse Pad
Corsair TX850 NZXT Phantom Gigabyte M8000X Razer Goliathus 
Audio
Logitech X540 
CPUMotherboardGraphicsRAM
AMD Athlon 64 X2 5200+ GA-MA78LM-S2H AMD 760G (Microsoft Corporation WDDM 1.1)  PNY Electronics  
RAMHard DriveOptical DriveCooling
PNY Electronics  Western Digital Caviar Blue Basic DVD Multi Recorder Stock 
OSMonitorPowerCase
Windows 7 Television PC Power & Cooling Silencer Series 500w Silverstone MLO3B 
  hide details  
Reply
post #6 of 17
Thread Starter 
It seems to be maxing out at a whopping 47C
post #7 of 17
Thread Starter 
Ok, i take that back.. I ran the f@h gpu client to put the gpu at 100%, and it wont get off of 600mhz, its like its always stuck in 2nd gear.. And at that point its running at 50C, unless i turn the fans to 100%, and then its about 45
post #8 of 17
Thread Starter 
-bump-

i still have no idea what's causing this, any ideas guys?
post #9 of 17
try to set the clocks manually from the Vision Center (ex Catalyst) according to the manufacturer which is 915 for the clock and 4200 (stock 6870) effective for the vram.

check you VRM temperatures with GPU-Z as well as some other temps for the core that are shown in the program..
Metallic's PC
(15 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 4770K Z87 (Classified) MSi GTX 275 TwinFrozr Corsair XMS3 4GB DDR3 1600MHz 
Hard DriveOptical DriveCoolingOS
3.25 TB (WD 2TB, Hitachi 1TB, WD 250GB) Sony Optiarc Mystic Liquor Windows 7 Ultimate 64bit, Windows 8.1, MacOS Ma... 
MonitorPowerCaseMouse
LG Flatron W2361V Thermaltake Toughpower XT 775W CoolerMaster Elite 430 Black CMStorm Devastator MS2K 
Audio
M-Audio FastTrack MK II 
CPUMotherboardGraphicsRAM
Athlon ii p360 HP model 1444 69.37 ATi Radeon HD 4250 IGP 2GB Samsung (SEC) 
Hard DriveOS
250GB Hitachi 7mm SATA Hard Drive Windows 7 Ultimate 64bit, 
  hide details  
Reply
Metallic's PC
(15 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 4770K Z87 (Classified) MSi GTX 275 TwinFrozr Corsair XMS3 4GB DDR3 1600MHz 
Hard DriveOptical DriveCoolingOS
3.25 TB (WD 2TB, Hitachi 1TB, WD 250GB) Sony Optiarc Mystic Liquor Windows 7 Ultimate 64bit, Windows 8.1, MacOS Ma... 
MonitorPowerCaseMouse
LG Flatron W2361V Thermaltake Toughpower XT 775W CoolerMaster Elite 430 Black CMStorm Devastator MS2K 
Audio
M-Audio FastTrack MK II 
CPUMotherboardGraphicsRAM
Athlon ii p360 HP model 1444 69.37 ATi Radeon HD 4250 IGP 2GB Samsung (SEC) 
Hard DriveOS
250GB Hitachi 7mm SATA Hard Drive Windows 7 Ultimate 64bit, 
  hide details  
Reply
post #10 of 17
Thread Starter 
Quote:
Originally Posted by MetallicGR View Post
try to set the clocks manually from the Vision Center (ex Catalyst) according to the manufacturer which is 915 for the clock and 4200 (stock 6870) effective for the vram.

check you VRM temperatures with GPU-Z as well as some other temps for the core that are shown in the program..
It's fine in performance and temperature at stock speeds, I just dont understand why it did worse in 3dmark05 after i overclocked it slightly
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › Overclocking a 6870, losing performance?