3 ms·
PS5 uses a custom 12 lane flash controller, not an m.2 drive. I think they optimized for things other than peak bandwidth, too, like latency from disk to VRAM a
by smolder 6y ago
PS5 uses a custom 12 lane flash controller, not an m.2 drive. I think they optimized for things other than peak bandwidth, too, like latency from disk to VRAM and random read. (And hardware lossy compression!)
- dragontamer 6y agohttps://www.gamesradar.com/ps5-ssd/ https://www.gamesradar.com/ps5-ssd/ PS5's custom SSD will be 5.5 GBps. But it supports M.2 expansion. > "We will be supporting certain M2 SSDs," Cerny confirmed. "These are internal drives that you can get on the open market and install in a bay on the PS5. They connect through the custom IO unit just like our SSD does, so they can take full advantage of the decompression, IO co-processors, and all the other features I was talking about. Here's the catch though: that commercial drive has to be at least as fast as ours. Games that rely on the speed of our SSD need to work flawlessly with any M2 drive." ------- PCIe 4.0 is a very flexible and high-bandwidth protocol. GPUs have been doing PCIe -> GPU transfers for some time (without any intervention of CPU or DDR4 RAM). Its good to hear that the PS5 is fully taking advantage of these capabilities. But it does mean that M.2 drives of a certain speed are needed to effectively play PS5 games, should you use the M.2 expansion port.
- smolder 6y agoMy mistake, haven't been keeping up. Thanks for the correction and info.