I've just found in the attic my older system which has 4gb ddr3 1600mhz udimm ram memory and i wanted to upgrade to 8gb of ram so i ordered 4gb ddr3 1600 mhz dimm ram memory and i dont know if they would be compatible or not.....
My specs: CPU: AMD FX 6300 6-Core 3.5/4.1GHZ
GPU: AMD RADEON R7 260X OC 1GB
Mother board: Asock 960GM-VGS3 FX
RAM:Crucial 4GB DDR3L-1600 UDIMM http://www.crucial.com/usa/en/ct51264bd160b
HDD: Seagate Barracuda 1TB, 7200rpm, 64MB cache, SATA III
Power supply: ZALMAN 500W
Memory ram that i've bought: Kingston Technology ValueRAM 4 GB 1600MHz CL11 DDR3
https://www.amazon.de/Kingston-KVR16N11S8-Arbeitsspeicher-Non-ECC-240-pin/dp/B008CP5QR2
My specs: CPU: AMD FX 6300 6-Core 3.5/4.1GHZ
GPU: AMD RADEON R7 260X OC 1GB
Mother board: Asock 960GM-VGS3 FX
RAM:Crucial 4GB DDR3L-1600 UDIMM http://www.crucial.com/usa/en/ct51264bd160b
HDD: Seagate Barracuda 1TB, 7200rpm, 64MB cache, SATA III
Power supply: ZALMAN 500W
Memory ram that i've bought: Kingston Technology ValueRAM 4 GB 1600MHz CL11 DDR3
https://www.amazon.de/Kingston-KVR16N11S8-Arbeitsspeicher-Non-ECC-240-pin/dp/B008CP5QR2