Difference between HyperX Savage and Predator

Just wanted to ask about the differences between the two types of RAM. Looking to upgrade from 8gb to 16gb as I keep getting low memory warnings when playing Rust. The specifications look identical aside from the Savage kit having XMP (OC profile from what I understand).

PS: any point going to 32gb?

Predator Memory Black - 16GB Kit*(2x8GB) - DDR3 1866MHz CL9 DIMM
Part Number: HX318C9PB3K2/16
Specs: DDR3 , 1866MHz , CL9 , 1.5V , Unbuffered
Timings: 1866MHz, 9-10-11, 1.5V; 1600MHz, 9-9-9, 1.5V

Savage Memory Red - 16GB Kit*(2x8GB) - DDR3 1866MHz Intel XMP CL9 DIMM
Part Number: HX318C9SRK2/16
Specs: DDR3 , 1866MHz , CL9 , 1.5V , Unbuffered
Timings: 1866MHz, 9-10-11, 1.5V; 1600MHz, 9-9-9, 1.5V
Buy
Buy

It probably is as simple as just the heatsink being different and that's it.