Intel HD P3000 and GTX560Ti CU II - No Supported CUDA Devices Detected?

[darawork]

I want to have the GTX560Ti solely as a 'CUDA' device, and run the display off the onboard Intel HD P3000, but cannot get it working correctly under MAX Design 2013.

Specs:

Lenovo Thinkstation E30 (7824) Bios xx53xx
Intel Xeon E31225 @ 3.10Ghz
8GB Ram
Corsair Enthusiast 650w
Asus GTX560Ti Cu II (Not OC'd)
Windows 7 64bit

3DS MAX Design 2013 PU4


Bios is set to have the Intel HD P3000 as primary.
Bios is set to have 'multiple monitor support' turned on.

I have a HDMI from the GTX560Ti into a HP Compaq LA2405wg display, I also have a VGA cable from the motherboard VGA out (Intel HD P3000)... they are both working. I can switch between display adapters in the monitors HUD.

Everything points to the two cards working harmoniously under Windows, it's only when I go to the iRay 'Hardware Resources' tab do I see that there are 'No Supported CUDA Devices Detected'.

I can switch the BIOS to consider the GTX560Ti as the main display adapter, and everything works fine; iRay sees the card and it all works... but I don't want Windows GUI hogging the card too, it only has 1GB of DDR5 and my scenes always need to be proxied / ProOptomized, etc to fit in the card as it is. I would like the whole 1GB dedicated to 'CUDA' duties.

Meh?