5 ms·
Does the M series have a flat memory model? If so, I believe that may be the difference. I'm pretty sure the entire x86 family still pages RAM access which (at
by pythonRon 1y ago
Does the M series have a flat memory model? If so, I believe that may be the difference. I'm pretty sure the entire x86 family still pages RAM access which (at least) quadruples activity on the various busses and thus generates far more heat and uses more energy.
- rwallace 1y agoI'm not aware of any CPU invented since the late eighties that doesn't have paged virtual memory. Am I misunderstanding what you mean? Can you expand on where you are getting the 4x number from?
- marshray 1y agoI doubt any CPU has more levels of address translation, caching, and other layers of memory access indirection than AMD/Intel 64 at this point.
- rwallace 1y agoThat's an interesting question about the number of levels of address translation. Does anyone have numbers for that, and how much latency and energy an extra layer costs?