The latest APP SDK may work on your machine however, support of OpenCL features may be very limited. Athlon II X4 620 processor seems from K10 architecture family which lacks AVX support. As per this page https://developer.amd.com/amd-accelerated-parallel-processing-app-sdk/system-requirements-driver-compatibility/ , OpenCL1.2 and higher version requires x86 15h Family CPUs with SSE2 & AVX support.
P.S. I've whitelisted you.
OK. Thank you.