hwertz
Posts: 644 +343
But what performance does that 170W chip have? It appears the Intel chips with a 125W TDP a) Still boost up to using 240W.. b) Have 8 performance and 8 efficiency cores (and no hyperthreading on the E-cores so you have 24 threads). The 170W AMD chips (7950X) have 16 full-speed cores with 32 threads, higher base clock speed and higher boost speed.
I'm wondering about this -- now that they have power cores and efficiency cores, I wonder if the ultra models will be performance core only models? That might be nice for gamers (and perhaps other markets where they are mostly having the computer either do nothing or be under heavy load, not the light loads where the efficiency cores would be particularly helpful.)
I mean, to be honest, the one "big.little" system I used had a "quad-core" ARM that was really 5 cores, 4 big and one little (an Nvidita Tegra K1)... and it made incredible use of it, 22 hour battery life under real usage, if you had one of those browser pages or whatever doing JUST enough to keep the CPU from going to sleep outright, it could tick over that efficiency core at 50mhz using watch battery amounts of power. (The odd side effect, it would shut down CPU cores as load got low enough to do so without hurting performance, as well as aggressively lowering and raising the clock speed... Linux did not correct the CPU usage to correct for CPU speed so it almost always showed 90-100% CPU usage... but you could get an idea of how loaded down it was by looking at CPU MHz instead.) I'd rather have like 1 or 2 efficiency cores to keep things ticking over, and spend my money (and die space) on power cores myself, than have a bunch of sluggish cores taking up space on the die.
I'm wondering about this -- now that they have power cores and efficiency cores, I wonder if the ultra models will be performance core only models? That might be nice for gamers (and perhaps other markets where they are mostly having the computer either do nothing or be under heavy load, not the light loads where the efficiency cores would be particularly helpful.)
I mean, to be honest, the one "big.little" system I used had a "quad-core" ARM that was really 5 cores, 4 big and one little (an Nvidita Tegra K1)... and it made incredible use of it, 22 hour battery life under real usage, if you had one of those browser pages or whatever doing JUST enough to keep the CPU from going to sleep outright, it could tick over that efficiency core at 50mhz using watch battery amounts of power. (The odd side effect, it would shut down CPU cores as load got low enough to do so without hurting performance, as well as aggressively lowering and raising the clock speed... Linux did not correct the CPU usage to correct for CPU speed so it almost always showed 90-100% CPU usage... but you could get an idea of how loaded down it was by looking at CPU MHz instead.) I'd rather have like 1 or 2 efficiency cores to keep things ticking over, and spend my money (and die space) on power cores myself, than have a bunch of sluggish cores taking up space on the die.