Usando nvidia-smi debería decirte que:
[email protected]:~$ nvidia-smi
Mon Oct 29 12:30:02 2012
+------------------------------------------------------+
| NVIDIA-SMI 3.295.41 Driver Version: 295.41 |
|-------------------------------+----------------------+----------------------+
| Nb. Name | Bus Id Disp. | Volatile ECC SB / DB |
| Fan Temp Power Usage /Cap | Memory Usage | GPU Util. Compute M. |
|===============================+======================+======================|
| 0. GeForce GTX 580 | 0000:25:00.0 N/A | N/A N/A |
| 54% 70 C N/A N/A / N/A | 25% 383MB / 1535MB | N/A Default |
|-------------------------------+----------------------+----------------------|
| Compute processes: GPU Memory |
| GPU PID Process name Usage |
|=============================================================================|
| 0. Not Supported |
+-----------------------------------------------------------------------------+
En cualquier Linux con el controlador NVIDIA instalado y cargado en el kernel, puede ejecutar:
cat /proc/driver/nvidia/version
para obtener la versión del módulo kernel de NVIDIA actualmente cargado, por ejemplo:
$ cat /proc/driver/nvidia/version
NVRM version: NVIDIA UNIX x86_64 Kernel Module 304.54 Sat Sep 29 00:05:49 PDT 2012
GCC version: gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)