BRocknRolla
Member
Ars Technica recently reported on Albert Penello's statements that, "The performance delta between the two platforms (XB1 and PS4) is not as great as the raw numbers lead the average consumer to believe," and his following NeoGAF postings in regard to some of these numbers.
Most of the article is a recap of what many of us read and experienced, but the relevant new information here is the "sniff test" analysis from Ars Technica's Peter Bright on Penello's statements:
Thought it would be good to hear an opinion from an outside voice. Take if for what you will.
http://arstechnica.com/gaming/2013/09/microsoft-exec-defends-xbox-one-from-accusations-its-underpowered/
Obviously, strike it down if I missed someone else posting the thread.
Most of the article is a recap of what many of us read and experienced, but the relevant new information here is the "sniff test" analysis from Ars Technica's Peter Bright on Penello's statements:
Penello: "18 CUs [compute units] vs. 12 CUs =/= 50% more performance. Multi-core processors have inherent inefficiency with more CUs, so it's simply incorrect to say 50% more GPU."
Ars: "The entire point of GPU workloads is that they scale basically perfectly, so 50% more cores is in fact 50% faster."
Penello: "Adding to that, each of our CUs is running 6% faster. It's not simply a 6% clock speed increase overall."
Ars: "What the hell does that even mean?"
Penello: "We have more memory bandwidth. 176gb/sec is peak on paper for GDDR5. Our peak on paper is 272gb/sec. (68gb/sec DDR3 + 204gb/sec on ESRAM). ESRAM can do read/write cycles simultaneously so I see this number mis-quoted."
Ars: "Just adding up bandwidth numbers is idiotic and meaningless. While the Xbox One's ESRAM is a little faster, we don't know how it's used, and the PS4's GDDR5 is obviously a lot bigger."
Penello: "We have at least 10% more CPU. Not only a faster processor, but a better audio chip also offloading CPU cycles."
Ars: "Maybe true."
Penello: "We understand GPGPU [general processing on GPU] and its importance very well. Microsoft invented Direct Compute, and have been using GPGPU in a shipping product since 2010it's called Kinect."
Ars: "Who cares about the API? It really doesn't make much difference."
Penello: "Speaking of GPGPUwe have 3X the coherent bandwidth for GPGPU at 30gb/sec which significantly improves our ability for the CPU to efficiently read data generated by the GPU."
Ars: "I don't know if that's even true."
Thought it would be good to hear an opinion from an outside voice. Take if for what you will.
http://arstechnica.com/gaming/2013/09/microsoft-exec-defends-xbox-one-from-accusations-its-underpowered/
Obviously, strike it down if I missed someone else posting the thread.