I'd need help please in setting up my Nvidia geforce GT 640 revision a2 - 1024 memory - clock - core 950mhz mem 891mhz. For mining mmc at mmcpool.com. I will in near future get a better card once I get this working. GPU MMC. I'm not sure which program to use. cgminer, or yam, or ? My CPU is ACPI x 64 core i5 4430 intel. Computer DDR3 with 16gb memory. HP ENVY 700-074. Power supply 460w. I've been cpu mining at 1.3hm with 3 threads. 4 threads doesn't work as well as per viewing on my performance monitor. With this CPU i think i should get more like 3hm. I'm using mmcminer. Now i'm trying to setup GPU mining. thanks for any help.