Run prime95 on all the cpu cores; and gpu applications on each gpu. You may also be able to run LL tests with CUDALucas on the GT 730. Since the gpu model has a 1:12 SP:DP ratio, it is not a bad choice for LL. Start with double-checks to get a sense of the time it takes to finish one and to check your gpu's reliability.
Gpuowl is not an option because of the OpenCL1.1 version, versus 2.0 required.
The 2GB gpu ram is small for P-1 factoring.
To get the most out of your gpus, regardless of application, do the tuning for the application you use.
https://www.techpowerup.com/gpu-spec...e-gt-730.c2590
See also
http://www.mersenneforum.org/showpos...91&postcount=2 and the rest of
https://www.mersenneforum.org/showthread.php?t=24607