On page 1 it says support:
Beam Hash III   3G / 4G

I'm trying with a AMD HD7970 card it gives me the following error:
Setup Miner...
Device 0:
    Name:    AMD Radeon R9 200 / HD 7900 Series
    Address: 2:0
    Vendor:  Advanced Micro Devices (AMD)
    Memory:  3072 MByte (3022 MByte free)
    Active:  false (Unsupported device or driver version.)

Connecting to pool...
Connected to beam-us.leafpool.com:3333  (TLS enabled)
TLS Handshake success

Am I doing something wrong?