CPU PlayStation 5:  8x Zen 2 Cores at 3.5GHz with SMT (variable frequency) PlayStation 4:  8x Jaguar Cores at 1.6GHz GPU PlayStation 5:  10.28 TFLOPs, 36 CUs at 2.23GHz (Custom RDNA 2 architecture) PlayStation 4:  1.84 TFLOPs, 18 CUs at 800MHz (Custom GCN architecture) RAM PlayStation 5:  16GB GDDR6/256-bit PlayStation 4:  8GB GDDR5/256-bit Internal Storage PlayStation 5:  Custom 825GB SSD PlayStation 4:  500GB HDD Expandable Storage PlayStation 5:  NVMe SSD slot PlayStation 4:  Replaceable internal HDD External Storage PlayStation 5:  USB HDD support PlayStation 4:  USB HDD support IO Throughput PlayStation 5:  5.5GB/s (Raw), Typical 8-9GB/s (Compressed) PlayStation 4:  Approx 50-100MB/s (dependent on data location on HDD) Memory Bandwidth PlayStation 5:  448GB/s PlayStation 4:  176GB/s Optical Drive PlayStation 5:  4K UHD Blu-ray Drive PlayStation 4:  Blu-ray Drive