Wonder if you guys can help. I have a Sapphire HD 5870 that I am trying to overclock using MSI Afterburner. I have changed the cfg files to allow unofficial overclocking which passes the 900mhz Core limit and I have also disabled overdrive through CCC. I can change the core and the voltage without any issues. I can run 3DMark11 and I get a 400 point boost with a 1000mhz core, so the overclock has worked.
However...
When I restart Windows, everything resets to the original clock speeds. I have tried selected the Apply Overclock at Startup option and also selecting to start MSI Afterburner on Windows startup, both to no avail. The strange thing is, when the overclock has failed, if you go back into MSI Afterburner and try and set the same core of 1000mhz, it won't let you, the screen flashes and it drops back down to 850mhz... the odd thing is, you can set any other value and it will stick, so I could have 999 or 1001 and it will save. I have had this type of behavior from Afterburner before but because I have been CPU limited in the past, I haven't been overly concerned about overclocking the GPU, now though, I am.
I have tried Sapphire Trixx which some people were suggesting works with the HD 5870, whilst it saves the the speed overclock, it won't allow the voltage overclock.
Can anyone suggest a workaround or another utility that will allow similar functionality?
Cheers.
However...
When I restart Windows, everything resets to the original clock speeds. I have tried selected the Apply Overclock at Startup option and also selecting to start MSI Afterburner on Windows startup, both to no avail. The strange thing is, when the overclock has failed, if you go back into MSI Afterburner and try and set the same core of 1000mhz, it won't let you, the screen flashes and it drops back down to 850mhz... the odd thing is, you can set any other value and it will stick, so I could have 999 or 1001 and it will save. I have had this type of behavior from Afterburner before but because I have been CPU limited in the past, I haven't been overly concerned about overclocking the GPU, now though, I am.
I have tried Sapphire Trixx which some people were suggesting works with the HD 5870, whilst it saves the the speed overclock, it won't allow the voltage overclock.
Can anyone suggest a workaround or another utility that will allow similar functionality?
Cheers.