Encontrou aqui no fórum do MDSN .
Hardware requirements WES 2011, as per CTP documentation , (these are unlikely to change dramatically for RTM)
The embedded device must meet or exceed the following requirements:
- 1 GHz x86 or amd64 processor
- 512 MB of system memory (1GB recommended for amd64)
- 900 mhz CPU or equivalent
- 1 GB free space on hard disk drive (HDD) or flash-based Solid State Drive (SSD) (4 GB recommended)
- At least one of the following bootable media types:
- Bootable DVD-ROM drive
- Bootable USB 2.0 port and a USB Flash Drive (UFD) with 4 GB of free space, or access to a local network
- BIOS Supporting Windows Preinstallation Environment (Windows PE) 3.0