No he made an outright statement about the speed the RAM operates at, if that speed was in fact theoretical he wouldn’t have used the statement of “the fact that the memory operates at around 172GB/s is amazing”, there’s no room within his words to indicate anything besides bandwidth being around 172GB/s.

The statement was made almost a year ago, no statement has been made to refute it, after all of this time, so nothing negates what Gilray said, memory operates at 172GB/s.

Gilray’s words aren’t ambiguous in the slightest, it’s an outright statement, has an obvious meaning, so there’s is in no way ambiguous, it’s fact.

No Sony hasn’t confirmed any such thing, there’s no outright statement if 135GB/s being the real world maximum available to developers.

Just Add Water confirmed that around 172GB/s is what they achieved out of the hardware, that’s a fact.

In Xbox One developers can’t access eSRAM from the CPU, Move Engines can’t make DDR3 capable of something it’s inherently incapable of doing, Xbox One’s 8GB pool can only either read or write within a given cycle, never both at the same time, hence why DDR3 loses in speed compared to GDDR5.

Only eSRAM can read and write and the same time & that’s only 32MBs, which is tiny, there’s also a rather limiting bandwidth of only 150GB/s, which isn’t a lot for such small pool of memory, certainly not enough to make up for the small 55GB/s available 8GBs of DDR3 in XBox One.

PS4 actualy beats out both DDR3 & eSRAM with it’s 8GBs of GDDR5 at 172GB/s of real world bandwidth (confirmed as I said by developers of Oddworld).

No one claiming RAM access as 135GB/s has given a single quote validating their claims.

The slides don’t outright state 135GB/s or 140GB/s as maximum speed available to the GPU, whole hardware setup or anything.

As I said before Just Add Water developers, that made Oddworld for PS4 have said that bandwidth to RAM was around 172GB/s, that means CPU, GPU and other on die components are sharing that bandwidth, it’s what they achieved out of the console.

Any Engine isn’t really a fair comparison since they’re more heavily based on the GPU. I’ll try looking up Matt’s profile on neogaf later but that seems an odd thing vs looking straight up clock speed capabilities on AMD’s website…

All modern gpu’s have those features…well huma is AMD terminology and it certainly helps they also make CPU’s.

Makes integration easy, no messy business deals lol.

Substance Engine benchmark, and developer Matt on neogaf.

http://www.neogaf.com/forum/showpost.php?p=94264594&postcount=50

PS4 has GPGPU and hUMA/HSA features that Naughty Dog and other 1st party devs will take advantage of. There’s lots of room to grow.

Games like infamous 2nd son already use GPGPU to run the particle effects like smoke and neon.

Unified GDDR5 > DDR3 + ESRAM for real world games performance.

Main RAM contention between CPU and GPU is an issue on both consoles.

20 GB/s is more than enough for the CPU to GDDR5 bandwidth.

You are misinterpreting that slide and wrong.

In essentially every way, the PS4’s hardware is more powerful than the XBO’s.