it's best to find an identical stick to match your Genesis if you plan to keep it, and use dual channel mode.
HX316C9SRK2/8 is a kit of 2x4GB sticks, totaling 8GB RAM running at DDR3-1600 CL9-9-9 @1.5V with XMP. it may or may not run well with your Genesis (you might need to set timings manually in BIOS).
The Genesis stick is tested to run at DDR3-1600 9-9-9-27 at 1.65V (1.65V wont work with the Savage's 1.5V). SPD JEDEC is DDR3-1600 timing of 11-11-11 at 1.5V.