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TSMC advertises 5nm as +15% performance OR -30% power consumption. Either one of these won’t be enough to bridge the gap in mobile. Even throwing in another mas
by hajile 6y ago
TSMC advertises 5nm as +15% performance OR -30% power consumption. Either one of these won’t be enough to bridge the gap in mobile. Even throwing in another massive 20% IPC improvement wouldn’t do the trick.
On the flip side, once you go bigger the game changes. If you increase the M1 power consumption to amount for interconnects, more memory lanes, more IO, etc the M1 seems to offer worse power to performance that shouldn’t be too unexpected. ARM just announced they are splitting into V1 (performance above all) and N2 (best power, size, performance combo)
- floatboth 6y agoLaptop Zen 3 is already equal in multicore perf to the M1 for the same wattage IIRC. While being on 7nm still. Don't underestimate AMD.
- hajile 6y agoApple ships a 30w charger with the M1 air. I can't find any zen 3 shipping with less than a 65w charger. Mac mini uses like 25-27w at the wall. 15-25w TDP for the 5800u doesn't include RAM (it's LPDDR4 at 1.1v will use a lot more power than M1 LPDDR4x at 0.6v). 5800u also has a chipset that consumes a few watts. 5800u has some features that the M1 does not (these would likely increase M1 power usage), but still doesn't seem close in power consumption.
- jjeaff 6y agoDoes the charger wattage mean anything? Couldn't it be that they are including a larger supply in order to charge faster?
- thies226j 6y agoNo. Ryzen Laptops do consume a lot more power than the 15w the m1 consumes under load.
- hajile 6y agoI don’t have any solid numbers on 5800u, so I didn’t want to make any claims. 4800u isn’t that different as far as power goes (mostly different in performance). A mini-PC with it uses almost 70 watts under load. https://www.anandtech.com/show/16236/asrock-4x4-box4800u-renoir-nuc-review/11 https://www.anandtech.com/show/16236/asrock-4x4-box4800u-ren...