4 ms·
> (8800 MT/s * 64 bits * 8 channels) / 8 / 1000 = 563.2 GB/s Was this example intended to describe any particular device? Because I'm not aware of anything tha
by wtallis 2y ago
> (8800 MT/s * 64 bits * 8 channels) / 8 / 1000 = 563.2 GB/s
Was this example intended to describe any particular device? Because I'm not aware of anything that operates at 8800 MT/s, especially not with 64-bit channels.
- sliken 2y agoM4 max in the MBP (today) and in the Studio at some later date.
- wtallis 2y agoThat seems unlikely given the mismatched memory speed (see the parent comment) and the fact that Apple uses LPDDR which is typically 16 bits per channel. 8800MT/s seems to be a number pulled out of thin air or bad arithmetic.
- sliken 2y agoHeh, ok, maybe slightly different. But apple spec claims 546GB/sec which works out to 512 bits (64 bytes) * 8533. I didn't think the point was 8533 vs 8800. I believe I saw somewhere that the actual chips used are LPDDR5X-8533. Effectively the parents formula describes the M4 max, give or take 5%.