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Help with a GTX 295 issue please?

Sorry, I don't really understand what you mean OrphanBoy.

How can I tell if it's dropping to 2D clocks?

The clock speed of the GPU's remain at the default speed, I just get about half the framerate I should get.
 
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I mean that when it works the first few times could it using the 2D clocks on 2D, then the (faster) 3D clocks when you're playing a game. But after a few days when you run Vantage it never does the 2D->3D transition therefore running the bench/game at the lower clock speed?
Can you run GPU-Z (with logging enabled) at the same time as Vantage to see if the core/memory are using the appropriate clock speeds?
 
Ah, I see what you mean.

I've run Rivatuner hardware monitoring and now GPU-Z whilst running Vantage and the GPU0 clock/memory stay at default all the time, whilst the GPU1 clock speeds are throttled until I start up the app and then they move up to the default settings whilst Vantage runs.
They then throttle back once Vantage is closed and I'm just back at the desktop.

They do the same if I start Left 4 Dead, GPU0 stays at default (576/999) and GPU1 goes from throttled (300/100) to default (576/999) whilst in the game, and returning to throttled when I exit the game.
 
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Well, I deleted and driverswept the Nvidia driver and re-installed it again (182.50) and it's running sweet again now.
How much longer before it drops back I don't know.
I've run a benchie and played L4D and it's still ok.
I really don't understand this.
Must be something to do with the driver.
 
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