Do you have description about “compute Unit, 1 core and 2 core” option for CPU Down Core Mode options in the A+ G34 and C32 socket MB BIOS setup page?
For the CPU downcore function under BIOS -> Advanced -> Processor & Clock Options -> CPU DownCore Mode, you'll find there are Disabled, Compute Unit, 1 Core, 2 Cores, 4 Cores for your option.
Please note that there are two dies on one G34 socket, for example, if you're using AMD G34 6348 CPU with 2 dies, total 12 core counts, with above BIOS options you'll find different results as follow :
Compute Unit, means only enable the cores per die on the socket
(ex : 6 cores for AMD 6348).
1 core, means to enable 1 core per die and total 2 cores on one socket.
2 cores, means to enable 2 cores per die and total 4 cores on one socket.
4 cores, means to enable 4 cores per die and total 8 cores on one socket.