Chrome and chromium should have about the same footprint. But IIRC chrom(ium|e) modifies it's memory usage quite a lot depending on the hardware it's running o

Chrome and chromium should have about the same footprint. But IIRC chrom(ium|e) modifies it's memory usage quite a lot depending on the hardware it's running on. If it's a low spec machine, it will disable many of the memory-hungry features and speed improvements.