What is the right bandwidth for WAN VDI?

Hi,

1. Remote Site 1  Upload speed:2.93 Mbps - Download Speed: 2.79Mbps

2. Remote Site 2:   Upload Speed:0.86 Mbps - Download Speed: 1.32 Mbps

3. DataCenter: (60 persistent, 40 pooled)      Upload Speed: 84.88 Mbps - Download Speed: 93.32 Mbps

for WAN VDI infrastructure, is at least 10Mbps required?

Thank you

Tuan