Hi everyone,

I am new to bitcointalk.org and also mining.

can you please tell me what is the best currency to mine at the moment 2017,

i am using old PC
amd athlon 64 x2 3ghz
 4 gb ram ddr2
and
2x r290 2gb each cross fire mode

i tried running ethereum mining it gives me error saying

PU0 - not enough GPU memory to place DAG, you cannot mine this coin with this GPU
GPU0 - OpenCL error -61 - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
GPU1 - not enough GPU memory to place DAG, you cannot mine this coin with this GPU
GPU1 - OpenCL error -61 - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
Setting DAG epoch #142 for GPU0
GPU 0 failed
GPU0, OpenCL error -38 - cannot write buffer for DAG
Setting DAG epoch #142 for GPU1
GPU1, OpenCL error -38 - cannot write buffer for DAG
GPU 1 failed
GPU 0 failed