About GM45 Thinkpads (X200, R400, T400, T500):
- thinkwiki.org has their specifications. You can use the specifications to
find out which CPU is the fastest one. Note that not all models have
removable CPUs, some models have soldered CPUs.
- Replacing the CPU requires a compatible CPU, but also some thermal paste.
- RAM size and speed probably has a noticable impact on the game speed.
- Power management might probably influence performances (Example: PCI power
management)
- HDD/SSD speed probably doesn't impact games performances as games typically
run in memory and don't access the disk much during the gameplay.
Trisquel has the phoronix test suite packaged, that might be used to do
reproducible benchmarks.
About ARM devices:
- As stated above Trisquel doesn't support ARM (yet) but Parabola does.
- The chromebook C201 and the EOMA68 don't have working 3D acceleration.
- Very few ARM devices have at the same time:
- The ability to be used with fully free software
- 3D acceleration
All the potential good candidates are not supported yet by Libreboot.
- The I.MX6 devices looks promising as the 3D acceleration support
is being worked on and mainlined.
- Some Tegra ARM chromebooks probably can have 3D acceleration with
free software if someone steps up and replace the non-free GPU firmware
for it.
This has been done most/all most nouveau compatible GPUs until recent ones
which have signed firmwares.
Denis.