Re:Introducing Copilot+ PCs
by cyberax on Wednesday May 22, 2024 @04:49PM
(#40446351)
> furthermore, if you look past the "Intel is just too slow for the power envelope" that you stated:
Well, yes. Intel was not able to deliver fast mobile CPUs on time. So Apple decided to give up and do it on their own.
> PS3 underpowered?
Yes. It was terribly underpowered. I worked with it back then, and it was slower than a 1GHz Pentium for practical tasks. The CPU in PS3 was clocked at around 3GHz, but it had full in-order execution. So any code with branches just died.
Sony's way around it was SPUs - special coprocessors, that were even more underpowered with little local memory. But there were 8 of them, and the common data bus was pretty fast.
It worked great for graphics and for something computation-heavy like Folding@Home. Kinda like modern GPUs. But it sucked for general-purpose code.
> Also if you compare like for like, the CPUs IBM put out in 2005 with 3.2ghz had a TDP of 75W. Intel CPUs in 2005 at 3.2GHZ used 130W TDP. both used 90nm processes.
Now compare their performance for actual tasks. You'd be surprised.
Cell architecture bombed. As a result, Sony switched to a regular architecture for PS3.
Well, yes. Intel was not able to deliver fast mobile CPUs on time. So Apple decided to give up and do it on their own.
> PS3 underpowered?
Yes. It was terribly underpowered. I worked with it back then, and it was slower than a 1GHz Pentium for practical tasks. The CPU in PS3 was clocked at around 3GHz, but it had full in-order execution. So any code with branches just died.
Sony's way around it was SPUs - special coprocessors, that were even more underpowered with little local memory. But there were 8 of them, and the common data bus was pretty fast.
It worked great for graphics and for something computation-heavy like Folding@Home. Kinda like modern GPUs. But it sucked for general-purpose code.
> Also if you compare like for like, the CPUs IBM put out in 2005 with 3.2ghz had a TDP of 75W. Intel CPUs in 2005 at 3.2GHZ used 130W TDP. both used 90nm processes.
Now compare their performance for actual tasks. You'd be surprised.
Cell architecture bombed. As a result, Sony switched to a regular architecture for PS3.