The AMD v140 has AMD-V / AMD Virtualization technology, however there is nowhere in the bios to enable or disable... I assume it is just always enabled...
Features
- MMX instructions
- Extensions to MMX
- 3DNow! technology
- Extensions to 3DNow!
- SSE / Streaming SIMD Extensions
- SSE2 / Streaming SIMD Extensions 2
- SSE3 / Streaming SIMD Extensions 3
- SSE4a
- AMD64 / AMD 64-bit technology
- EVP / Enhanced Virus Protection
- AMD-V / AMD Virtualization technology
info from: http://www.cpu-world.com/CPUs/K10/AMD-V%20Series%20V140%20-%20VMV140SGR12GM.html
Overall, performance of Qubes seems reasonably fast...