PS4 Pro Was a Test Case for PlayStation 5's Lifecycle, According to Sony
PS4 has 8GB of RAM, almost 2 teraflops of computational performance | VG247
PS5 specs vs PS4: Just how many teraflops does Sony's latest console pack in? | VG247
How many Teraflops does the PS5 have? - Quora
PlayStation 5」のスペック一部公開。「PS4」と比べて性能はどれくらい向上したのか - 価格.comマガジン
Preposterous PlayStation 5 core specifications leaked: CPU @3.86 GHz, GPU with 56 CUs and 15.05 TFLOPS, 32 GB RAM, 1.5 TB SSD - all for US$499 - NotebookCheck.net News
PS4 lays the graphical smackdown on the Xbox One, has 50% more GPU power | TweakTown