Consumers don't know to look for L2/L3 cache sizes on the tin. How would you even start to explain cache coherence to a punter?
-
-
It means that anything that isn't a tight loop on a small amount of data is going to suffer a main-memory read.
Show this thread -
...and main-memory reads are 200x more expensive than local (L1) reads. Need that data to keep doing work? Tough luck.
Show this thread -
These situations are called "stalls" or "waits"; CPU is spun up, but it's not retiring instructions (doing work): https://en.wikipedia.org/wiki/Wait_state
Show this thread -
...which means that one of the worst effects of the cores-not-caches tradeoff in this phone is that it loses *power efficiency* too.
Show this thread -
The best trade in mobile CPU design today is to swap caches for cores (looking at you
@qualcomm,@SamsungSemiUS, &@MediaTek)Show this thread -
So how slow is the
@MediaTek MT6737? Lets go to the film! Here are some devices built with this chip:https://www.kimovil.com/en/list-smartphones-by-processor/mediatek-mt6737 …Show this thread -
...and they all score like this: https://browser.geekbench.com/v4/cpu/4478849
Show this thread -
This is 8-9x slower than the iPhone 8: https://browser.geekbench.com/ios_devices/51
Show this thread -
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
& Web Standards TL; Blink API OWNER
Named PWAs w/
DMs open. Tweets my own; press@google.com for official comms.