No way, at least nvme pcie4 in ps5.
According to leaks, ps5 is faster than fast, so it is even more exciting. Based Mark Sony may grant us his secret reRAM sauce.
I've personally already explored why ReRAM is not going to happen with these systems. No chip has yet to be produced at big capacities (GB range) for commercial purposes, and we're already into 2020. Even once the chip got produced, it'd have to go through a lot of testing and pre-production, which takes months. Fabs would have to be set up, evaluated, certified, and people hired to man the machines and assembly.
In other words, it's not happening. If Sony had a ReRAM announcement, they'd of said it at CES given it's a technology applicable to the broader electronics market. The only ReRAM-like PCM memory on the market right now is Intel's Optane, and while it provides DRAM-style benefits (in the persistent memory variant) for bit/byte-level data alterability, speed-wise it isn't much faster in use than these upcoming behemoth PCIe 4.0 NVMe SSD drives. Chances are very likely ReRAM would follow suit in terms of real-world performance, but they haven't even managed to produce a chip in decent sized-capacity for commercial use yet.
At this point given how similar ReRAM and 3D-Xpoint are in terms of technology it's possible teams are testing taking 3D-Xpoint and altering it into something like ReRAM, but these experiments are still ongoing (if they're happening). So in the end, buying into the ReRAM (or even 3D-Xpoint/Optane) fantasy train with these systems is just that: fantasy. But since these systems will be providing low-level access to their storage memory to act as a cache and memory-map it as well (think AMD's SSG cards), that will be more than good enough for next-gen gaming.
So, 7 GB is over 100x speed. That contradicts MS statement - 40x improvement.
Lots of assumptions and jumping to conclusions based on a rumor from digitimes on the supplier.
Phison controller can mean a few models, not just the E18. E19, for instance, is only 1.6W and will allow them 3.75GB/s which will fit the "X40 times faster" claim if we look at the Xbox One HDD as a 50-100MB/s drive.
Again I ask, why would they gimp a PCIe 4.0 compatible APU with likely between 16-24 PCIe 4.0 lane interfaces, to simply x1 (2GB/s effectively)? You can argue that perhaps in having a lot more CUs they've cut out some PCIe lanes but I can't picture either system's APU supporting less than x12 PCIe 4.0 lane interfaces.
We don't have a lot of information on what state XSX development was in when the comment was made, or if they were even referring to the internal custom SSD storage (that I think both systems will be using hence likely using these type of memory controllers to achieve 7-8GB/s speeds) or (more likely) the connection speed for the secondary user-optional storage drive? Which, since it'd be acting more as cold storage, 2GB/s is sufficient enough.
These are logical conclusions to draw considering the other areas these system manufacturers are pushing their specifications. Even if it's to conserve power draw there is no reason to limit the internal cache drive to 2GB/s, these aren't mobile devices.
Are there any other controllers with better Random Read speeds, even if with significant less Sequential read speed ? (or any other pcie4 controllers at all?).
Aren't Random Read speeds much more important for gaming than Sequential? (idk if these things are directly proportional)
If you want sufficient random access speeds you need a different type of memory technology built for sufficient random access. NAND is not that type of memory. NOR is, but it's also in much lower size capacities, and can get pricey, plus the write speeds are extremely slow compared to NAND (the read speeds are faster however, even faster than SLC NAND).
3D-Xpoint (persistent memory variant) and ReRAM were two options some of us were entertaining...that some of us still are entertaining actually xD....but the latter is nowhere near ready for commercial deployment and the former would still cost about $1-$1.50 per GB even at bulk pricing the likes of Sony or MS could secure, which would limit the total amount in either system to about 64-128GB, versus the 1TB we'll be seeing from both system's (potentially) customized low-level access memory-mapped internal SSDs.