AMD does not describe Zen5 L3 fabric as a mesh anywhere in their slides. What they say that they keep same layout as Zen3/4 but improved latency. And technical details come from whistleblowers months before Zen5 release that they added ladders to their ring fabric - and did it by core pairing -...
Where did you find that statement? They did tell that for Zen5 they added ladder optimizations to their ring design which obviously result being able to double ring capacity from 8 to 16. And physical implementation tells that they use that -physical design is to optimize routing distances and...
Mesh network can route packets from source to 3 different location. So doing 16 core mesh would result 4x4 grid or designer would get booted from his job instantly. Ring bus instead is point to point which leads sillicon designs to grow in one direction because it's pretty much only way to do it...
Mesh is different topology. Ringbus is ringular for obvious reasons - and I have only see AMD stated ladder optimization for ringbus - for those two bidirectional rings Zen5 cores have ringstops in core pairing style effectively splitting max ring distance to half without needing complex mesh...
Whole AMD 12-core series is fraudulent. They sell mostly useless dual binned CCD at higher price than one full CCD. Their sole market segment is those people that just though that 12 cores are way better than 8 -many will buy them for gaming and pay more for less performance. They should do...
https://www.tomshardware.com/pc-components/cpus/amd-ryzen-9-9900x3d-review
It ain't as good as 9800x3d or 9950x3d. 9950x3d is as good as 9800x3d but 9900x3d sure performs worse in gaming. And sole purpose of those x3d cpus is gaming so 9900x3d is totally pointless cpu. More so when game...
You can google yourself using key words game core parking x3d. It's been official from AMD many years now. Or install Ryzen Master and check it's game mode - it's well documented there.
For those reasoning 5600x is not inferior to 5800x. But it is if workload scales beyond 6 cores - so AMD values those cpus right - 5600x is cheaper than 5800x. 9900x3d ain't valued right - it only have 6 core x3d die and pretty useless other 6 core die - for gaming that is inferior to 9800x3d...
AMD does not hide it - x3d cpu's should park 3d-cacheless CCD when running games - and performance will suffer if it doesn't. So AMD has instructions how to monitor core parking at gaming.
For it's purposed use case -gaming AMD thread director disables 3d-cacheless chiplet. So it's only 6-core and inferior cpu to not only 9950x3d but also 9800x3d which have full 8-core x3d die. 9900x3d should not exists as it's lower grade cpu with higher price than 9800x3d. Only people that...
AMD should not make 9900x3d as it's really just 6-core cpu - thus inferior to all other x3d models. Or if they want to make 12-core version at least they should do it asymmetric maintaining fully functional 8-core x3d die. Or at least sell that 6-core dual die chip at lower price than fully...
M4 has stronger cores so getting best performance and performance/watt happening point ain't driving all cores to max temp but instead giving more power budget to big cores and less to efficiency cores. That's just natural balancing - that driving all cores to max temp is only feasible when...
Yeah I have missed that they have done split register file design. Didn't find yet information whether they support register-register moves and front-end logic to fully target single-tread performance or is that split only made for SMT threads.
IBM also clearly presents that they are using...
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