All tests done in KVM with 4 logical host CPUs, but I would expect to have similar (if not better) results on real hardware.

Version used: Whonix-Host-XFCE-15.0.1.2.2

Whonix-Host ISO, 2GB:

• ISO Boots normally
• gw boots normally
• Impossible to launch ws with default 2GB (system freeze)
• Setting 256M to gw and 1024M RAM to ws barely works/freezes

Conclusion: not suitable, unusable, very low performance.

Whonix-Host Installed in live mode, 2GB:

• more usable than Whonix-Host ISO, with: gw 256M RAM and ws 1024M RAM (much faster, no freeze
• performance is however still insufficient to do anything productive

Conclusion: not suitable, barely usable

Whonix-Host ISO, 4GB:

• works OK with default settings (gw 512M RAM, ws 2048M RAM)

Conclusion: suitable

Whonix-Host Installed in live mode, 4GB
Same as above

I assume any configuration above that would be good enough.

My takeaway: Whonix-Host needs at least 4GB to be productive and enjoyable

Do we need more tests or can we close this ticket?