How do I find the GPU temperature of an Intel card using command-line?

[m654321]

I sometimes use the 'sensors' with/without the 'watch'  command in terminal to check on CPU temperatures. On the same machine, I'd like to check GPU temperatures - I can find info on this for nvidia GPUs on the web, but not Intel ones. The Dell Lattitude D630 in question (my daily driver - see signature) has an Intel card - details of its video card are contained in the following:

Code:

mike@D630:~$ sudo lshw -C display
[sudo] password for mike:
  *-display:0             
       description: VGA compatible controller
       product: Mobile GM965/GL960 Integrated Graphics Controller (primary)
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 0c
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:27 memory:f6e00000-f6efffff memory:e0000000-efffffff ioport:efe8(size=8)
  *-display:1 UNCLAIMED
       description: Display controller
       product: Mobile GM965/GL960 Integrated Graphics Controller (secondary)
       vendor: Intel Corporation
       physical id: 2.1
       bus info: pci@0000:00:02.1
       version: 0c
       width: 64 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: latency=0
       resources: memory:f6f00000-f6ffffff

Using command-line, how can I get the GPU temperatures?