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Overclocking issues with a sapphire HD 7770 OC edition card

post #1 of 3
Thread Starter 
I have posted this on a few more sites hoping for fast and reliable answer.

I manually overclocked my gpu to 1200 MHz core clock and 1400 to the memory clock. I have also increased the power control settings to 30% (highest setting is 50%). After all that i ran a few benchmarking tools like Furmark 3D and 3Dmark11 all of which ran steadily and smoothly with increased performance and points. The highest temp reached in Furmark was 71°C.

Then when i started to play games like crysis 2 or sleeping dogs after a few min the games frooze, the audio at that moment also frooze and then the game crashed to desktop and got a notice saying ati display driver stopped responding...... After that experience i reset all my clocks and the games ran fine... But then i found another prob if i ran any videos, after playing for a few seconds, it would also freeze (but the audio kept going) but this time a black screen appeared on my monitor than it goes back to desktop saying ati display driver stopped working (like before). I have had no issues with any weird textures.

After figuring out that my display driver may have gotten corrupt i used Driver sweeper and made a clean install of my drivers. Than everything was fine

Lastly I tried overclocking it to 1185Mhz core. 1325MHz memory. This was pretty stable but the weird thing is my performance decreased. I got way lower scores on furmark and 3dmark aswell as low fps. Increased power settings to max....... same result. Went back to stock clocks my results were better than the 2nd profile

Now with the stock clocks (1150/1250) its working Fine! But i want to know whether i got a bad GPU that doesnt overclock? I really want to overclock it and play games at a decent fps.


My Rig:

CPU: Intel Core i5 2400
RAM: 8 GB DDR3 1333MHz
GPU: Sapphire HD 7770 GHZ Edition OC
Motherboard: Gigabyte GA-H77-DS3H
PSU: Gigabyte Superb e720
Edited by Tom12 - 9/16/12 at 9:34am
post #2 of 3
It's pretty simple really, your overclock is simply not stable. If you get worse performance, then you have to drop the clocks accordingly until performance shoots back up.

Are you testing stability with something like Furmark or OCCT?
 
HTPC
(14 items)
 
File server
(22 items)
 
CPUMotherboardGraphicsGraphics
Pentium G3258 @ 4.6GHz/1.281v (rock-solid stable) MSI Z97 PC Mate [media & productivity] Intel HD graphics [games] Diamond Radeon HD5870 1GB 
RAMHard DriveHard DriveOptical Drive
4x4GB Corsair Vengance DDR3 @ 1800MHz 1.504v Crucial M500 480GB SSD RamDisk - adaptive 10GB volatile scratch LG Blu-ray drive 
CoolingCoolingCoolingOS
Cooler Master X6 Elite with stock fan removed CPU fan: 120mm Arctic F12 PWM @ ~300rpm PSU fan: 120mm Kingwin case fan via PSU fan plug Windows 7 Ultimate - 64bit SP1 
MonitorKeyboardPowerMouse
E772p CRT (Trinitron) @ 79-94hz 1152x864/1280x720 PS/2 Microsoft Internet Keyboard (replaced cord) Antec EA-380D (380w) with stock fan removed Logitech MX510 (blue) with replaced USB cord 
AudioAudioAudioAudio
White Monoprice 9963 IEM headphones [Left ear] LostEarBuds medium single-flange tip [Right ear] Unknown medium single-flange tip Asus Xonar DS 
AudioAudioAudio
Dual SOIC LME49990 DIP8 op amp [music] Foobar2000 + Xonar ASIO driver [games & movies] Razer Synapse 7.1ch to binaural 
CPUMotherboardGraphicsRAM
Core 2 Duo (Penryn) T8300 @ 2.4GHz Dell Studio 1535 Intel 965GMA 2GB 667MHz Samsung DDR2 
RAMHard DriveOSMonitor
1GB 667MHz Samsung DDR2 60GB Corsair Force 3 SSD Windows 7 64bit SP1 Toshiba 39L1350U HDTV 
KeyboardPowerMouseMouse Pad
Some USB wireless Logitech keyboard Rocketfish universial power adapter (my cousin's) Some USB wireless Logitech mouse couch 
AudioAudio
HDMI audio-out to HDTV HDTV optical-out to Denon AVR-200 reciever 
CPUMotherboardGraphicsRAM
Pentium 3 @ 667MHz Some Intel mobo ATI Rage 128 AGP 32MB 2x256MB DDR1 
Hard DriveHard DriveHard DriveHard Drive
1GB Sandisk CF card - boot drive Western Digital Caviar SE - 320GB IDE Maxtor - 200GB IDE RamDisk - adaptive 64MB viotle scratch 
CoolingOSMonitorPower
Athlon XP 2000+ Palomino stock heatsink w/ copp... Windows 2000 Pro SP4 None - VNC is used instead Bestec ATX-250-12Z 
CaseOtherOther
Some super-basic beige case Intel PCI ethernet card Linksys PCI ethernet card 
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HTPC
(14 items)
 
File server
(22 items)
 
CPUMotherboardGraphicsGraphics
Pentium G3258 @ 4.6GHz/1.281v (rock-solid stable) MSI Z97 PC Mate [media & productivity] Intel HD graphics [games] Diamond Radeon HD5870 1GB 
RAMHard DriveHard DriveOptical Drive
4x4GB Corsair Vengance DDR3 @ 1800MHz 1.504v Crucial M500 480GB SSD RamDisk - adaptive 10GB volatile scratch LG Blu-ray drive 
CoolingCoolingCoolingOS
Cooler Master X6 Elite with stock fan removed CPU fan: 120mm Arctic F12 PWM @ ~300rpm PSU fan: 120mm Kingwin case fan via PSU fan plug Windows 7 Ultimate - 64bit SP1 
MonitorKeyboardPowerMouse
E772p CRT (Trinitron) @ 79-94hz 1152x864/1280x720 PS/2 Microsoft Internet Keyboard (replaced cord) Antec EA-380D (380w) with stock fan removed Logitech MX510 (blue) with replaced USB cord 
AudioAudioAudioAudio
White Monoprice 9963 IEM headphones [Left ear] LostEarBuds medium single-flange tip [Right ear] Unknown medium single-flange tip Asus Xonar DS 
AudioAudioAudio
Dual SOIC LME49990 DIP8 op amp [music] Foobar2000 + Xonar ASIO driver [games & movies] Razer Synapse 7.1ch to binaural 
CPUMotherboardGraphicsRAM
Core 2 Duo (Penryn) T8300 @ 2.4GHz Dell Studio 1535 Intel 965GMA 2GB 667MHz Samsung DDR2 
RAMHard DriveOSMonitor
1GB 667MHz Samsung DDR2 60GB Corsair Force 3 SSD Windows 7 64bit SP1 Toshiba 39L1350U HDTV 
KeyboardPowerMouseMouse Pad
Some USB wireless Logitech keyboard Rocketfish universial power adapter (my cousin's) Some USB wireless Logitech mouse couch 
AudioAudio
HDMI audio-out to HDTV HDTV optical-out to Denon AVR-200 reciever 
CPUMotherboardGraphicsRAM
Pentium 3 @ 667MHz Some Intel mobo ATI Rage 128 AGP 32MB 2x256MB DDR1 
Hard DriveHard DriveHard DriveHard Drive
1GB Sandisk CF card - boot drive Western Digital Caviar SE - 320GB IDE Maxtor - 200GB IDE RamDisk - adaptive 64MB viotle scratch 
CoolingOSMonitorPower
Athlon XP 2000+ Palomino stock heatsink w/ copp... Windows 2000 Pro SP4 None - VNC is used instead Bestec ATX-250-12Z 
CaseOtherOther
Some super-basic beige case Intel PCI ethernet card Linksys PCI ethernet card 
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post #3 of 3
Thread Starter 
yes i did there were no issues (i think). I ran furmurk for about 15 min or more but there were no problems. When i used the first overclock profile my points and performance did increase, but games frooze and crashed.... When i used the second profile everything was alright no freezes or crash but my performance decreased. The only clocks giving good results are the default clocks. mad.gif

Oh theres one more thing i forgot to mention. The weather in my place is pretty warm so once (with the default clocks and settings) i cracked up my fan speed to about 60% everything was fine and the highest temp reached was 58°C but i had the same issue games frooze and crashed and i got "ati display driver has stopped responding and has recovered". I doubt its my PSU cause its just a couple of months old and Gigabyte PSUs are pretty good..
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