Hi Christopher, hoping to see more videos like this one. I like the short format with deep dive on a single subject. Answer this for me please. M3 pro chips have a 150gb/s memory bandwidth on the base 18gb ram. Does upgrading to 36gb ram increase the memory bandwidth or is it fixed for any ram configuration? Also is there anything I am missing that affects the memory bandwith of a system?
Memory bandwidth is fixed and does not change depending on how much RAM is applied. In your case, upgrading to 36GB of Unified RAM still has the same 150GB/s memory bandwidth.
Hi Christopher, I wanna ask this question so badly because it really bothers me because I can’t find answers about this anywhere. So I have 8GB DDR3L 1600Mhz PC3-12800 single channel, so I read online theoretically my max module bandwidth will be 12.8GB/s and then when I tested my memory bandwidth on CMD with winsat mem, it can only reach around 6.5GB/s and then I looked it up online and people said that in order to get maximum bandwidth I need to have dual channel memory but they also said then the maximum bandwidth will be 25.6GB/s because 12.8GB/s x 2 = 25.6GB/s because at dual channel the memory will run at 128 bit bus width so it’ll double the bandwidth as well but what I DON’T GET HERE IS WHY ON EARTH DO I ONLY HAVE around 6.5GB/s bandwidth, shouldn’t I get around 12.8GB/s on single channel? so then I also ran the winsat mem test on my friend’s laptop which has 4GB DDR4 2666Mhz PC4-21300 Single channel too and she only get like around 11GB/s, shouldn’t she get around 21.33GB/s and IF she upgrade it to dual channel shouldn’t she see around 42.6GB/s? soo pls explain what am I missing here? because I’ve been wondering like crazy what the hell is wrong 😭 thank you btw 🙏🏼
@@ChristopherDobey my motherboard is HP 81E1 for HP Notebook 14 am014tu model and the cpu is intel celeron n3060, for my friend’s laptop idk her specific motherboard but her laptop is HP 14s cf1046tu and the cpu is intel celeron n4205u
I googled my processor i9-13980hx - Found intel spec sheet - "Max memory bandwidth = 89.6 GB/s.". Never in my life have been worried about it. I'll try not to date myself. I do know that the 32GB laptops run ram at full speed 5600 MHz. I have 128GB - runs at 3600Mhz.. The new i9-14900HX can do all 128GB at 5600Mhz. I guess I'd need a program to see what this MSI Titan memory bandwidth is. The 128GB was a bigger sell than the 32GB. Editing 360 video in Davinci blows by 32GB and even 64GB. (Speed Warp -Optical Flow to boost 30fps to 60fps, color adjustments, denoise, etc).
It is dual channel, so 89.6 GB/s times 2. Also for CPU data exchange, that's more than enough. Apple is nowadays a home user computer. An i9 12900 which has been on the market for 3 years or more, can smash this M3. I gave up Apple due to a to a lack of processing speed.
ARM will beat x86 in the long run. It's just a matter of time. Unless something major changes on the PC side, Apple will become dominant with their computers in the future.
