CPU, GPU And Memory
At the heart of the Samsung Z is Qualcomm's Snapdragon 800, a powerful system-on-chip. Inside, there's a quad-core Krait 400 CPU running at 2.3GHz for running applications and the Adreno 330 for processing 3-D graphics at 50 percent faster than its predecessor GPU. The Galaxy S5 has the Snapdragon 801, which has the same GPU but runs a little faster at 2.5GHz. Both devices have 2 GB of RAM and start at 16 GB of storage with support for at least 64 GB more via microSD card (Galaxy now supports 128 GB, and some third-party reports indicate that Z does as well).