Hi,
I have an issue with my GT650M under Bootcamp (Win 7 64Bits, Pro Edition). Basically, the card can't perform well, even at factory settings (core clock speed of 900Mhz/memory clock of 2508Mhz).
During gaming, the GPU downclocks itself to 797MHz, then 725Mhz with spikes to 200Mhz, causing poor fps and massive stuttering.
What I've done so far :
- countless SMC/PRAM resets (with SMC update 1.1 installed)
- Throttlestop to prevent Turbo Boost for the CPU
- Lubbos Fan Control, with fans running at 5500 rpm
- fixed power state/clock settings with Nvidia Inspector
- High performance setting in Nvidia Control Panel and Windows Power Management
- Clean install of the latest Nvidia Drivers (driver cleaner under safe mode)
The only thing that seems to work, is to downclock the card with Core Clock Speed around 700Mhz and memory around 1000Mhz with Nvidia Inspector : lower FPS but no stuttering. Not optimal... and really far from default performance.
On the OS X side, I don't use graphic intensive applications but overall, the computer performs well, even under heavy load (several Win Server 2012 VM in VMWare for example).
Thanks for your help.
PS : Sorry for any bad grammar or spelling, I'm from France
I have an issue with my GT650M under Bootcamp (Win 7 64Bits, Pro Edition). Basically, the card can't perform well, even at factory settings (core clock speed of 900Mhz/memory clock of 2508Mhz).
During gaming, the GPU downclocks itself to 797MHz, then 725Mhz with spikes to 200Mhz, causing poor fps and massive stuttering.
What I've done so far :
- countless SMC/PRAM resets (with SMC update 1.1 installed)
- Throttlestop to prevent Turbo Boost for the CPU
- Lubbos Fan Control, with fans running at 5500 rpm
- fixed power state/clock settings with Nvidia Inspector
- High performance setting in Nvidia Control Panel and Windows Power Management
- Clean install of the latest Nvidia Drivers (driver cleaner under safe mode)
The only thing that seems to work, is to downclock the card with Core Clock Speed around 700Mhz and memory around 1000Mhz with Nvidia Inspector : lower FPS but no stuttering. Not optimal... and really far from default performance.
On the OS X side, I don't use graphic intensive applications but overall, the computer performs well, even under heavy load (several Win Server 2012 VM in VMWare for example).
Thanks for your help.
PS : Sorry for any bad grammar or spelling, I'm from France