Here are all the tech specs for PS5 and Xbox Series X in a handy table. The better specifications are highlighted with bold text.

Tech SpecsPS5Xbox Series X
CPU8x Zen 2 Cores at 3.5GHz (variable frequency)8x Cores @ 3.8 GHz (3.6 GHz w/ SMT) Custom Zen 2 CPU
GPU10.28 TFLOPs, 36 CUs at 2.23GHz (variable frequency)12 TFLOPS, 52 CUs @ 1.825 GHz
GPU ArchitectureCustom RDNA 2Custom RDNA 2
Die Size—360.45 mm²
Process—7nm Enhanced
Memory16GB GDDR6/256-bit16 GB GDDR6 w/ 320b bus
Memory Bandwidth448GB/s10GB @ 560 GB/s, 6GB @ 336 GB/s
Internal StorageCustom 825GB SSD1 TB Custom NVME SSD
I/O Throughput5.5GB/s (Raw), Typical 8-9GB/s (Compressed)2.4 GB/s (Raw), 4.8 GB/s (Compressed, with custom hardware decompression block)
Expandable StorageNVMe SSD Slot1 TB Expansion Card (matches internal storage exactly)
External StorageUSB HDD SupportUSB 3.2 External HDD Support
Optical Drive4K UHD Blu-ray Drive4K UHD Blu-Ray Drive
Performance Target—4K @ 60 FPS, Up to 120 FPS
Dimensions—151mm x 151mm x 301mm
Weight—4.45 kg