Nvidia power control on linux?

[Ktk]

I'm dual booting Windows7/Ubuntu14.04 on a computer, and am running a GTX 460 on a dual-screen system.

 

With no configuration, this dual-screen setup results in my graphics card idle at 60C. 

 

On Windows, I've been able to drop the idle temps by 15~20C with the NVIDIA Power saver tool, specifically the Multi-Display Power Saver:

http://pcgamesbeat.blogspot.com/2012/08/enable-power-saving-mode-on-nvidia-gpus.html

 

I've looked around for a Linux equivalent, but can't seem to find one.

Am I stuck here on Linux? Anyone else had issues with multi-display Linux setups? I'm on NVIDIA Driver 346.87 (opensource).

 

Here's what happens when I turn off my second monitor. 20+C cooler in 5 minutes.

(The 3 spikes reflect me being impatient and working on stuff instead of letting the computer sit)