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MSI adds ZEN3 support to Series 400 Chipsets, even with 16 MB BIOS
AMD planned they would only offer ZEN3 support for Series 500 motherboard chipsets, the reversed that decision and stated 32MB BIOS ready motherboards can support ZEN3. Now MSI mentions Zen 3 support on its AMD 400-series Chipset Motherboards with 16MB ROMs.
Yeah, not confusing at all eh? But it's sufficient to say there will be wide support from motherboard manufacturers on the Series 400 chipset platform for ZEN3. Eric van Beurden over at MSI in a presentation confirmed that with the non-MAX motherboards (16MB BIOS) will get Zen 3 support as well as MAX (32MB BIOS) versions with a 'selective BIOS' option.
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EspHack
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#5793469 Posted on: 05/28/2020 08:47 PM
I still can't find a straight answer to that
heck why are they even called "rom" at this point? okey the cpu for some reason can't address more than 16mb, so lets partition a 4gb "rom" into whatever many parts it would need to work, done.
I'm looking for something along the lines of "bios rom chips are not normal nand flash, they are incredibly specialized, resilient, low latency, and cost like $10 per megabyte" as a reason for these ridiculously small sizes, but all we get is non answers like "oh yeah 32mb costs way more, so they use 16mb!"
I mean its not like cpu cache, which is very easy to understand why they are as small as they are, this on the other hand just looks like planned obsolescence
When people talk about memories not less than GBs why mobo vendors miserly embed 16 MB BIOS ROMs which were the norms of 2000s ?
I still can't find a straight answer to that
heck why are they even called "rom" at this point? okey the cpu for some reason can't address more than 16mb, so lets partition a 4gb "rom" into whatever many parts it would need to work, done.
I'm looking for something along the lines of "bios rom chips are not normal nand flash, they are incredibly specialized, resilient, low latency, and cost like $10 per megabyte" as a reason for these ridiculously small sizes, but all we get is non answers like "oh yeah 32mb costs way more, so they use 16mb!"
I mean its not like cpu cache, which is very easy to understand why they are as small as they are, this on the other hand just looks like planned obsolescence
Astyanax
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#5793556 Posted on: 05/29/2020 12:47 AM
but because pre-matisse Ryzens could not address anything above 16MB
Fender178
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#5793567 Posted on: 05/29/2020 01:26 AM
16MB BIOS ROM are more than enough for storing few KB of AGESA microcode.. The space is "wasted" by 3rd party chipset firmwares, useless functions and graphics effects and of corse ad-hoc system tuning code (eg: overclocking functions, fans tuning) and basic BIOS program.
I disagree because fan control is very important in my mind and the same thing goes for overclocking because you don't want to alienate your customers by getting rid of features for new CPUs. Also why would they make 32mb and beyond boards then? There are boards out there that had to get rid of fan control to support newer CPUs. I think the graphics could be simplified while keeping the pretty menus. This is why the make lower chipset boards with less features because they know those users aren't going try and overclock their CPUs with them.
Cooe
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#5793598 Posted on: 05/29/2020 04:20 AM
Except it's totally not. Zen & Zen+ CPU's can only address a 16MB BIOS. That is hard FACT. Also, AMD NEVER said the Zen 3 support was only coming to 400 series boards with 32MB BIOS chips! Did none of you, including Hilbert, read the actual dang press release? They said they were going to make standard 16MB BIOS boards work in the original announcement by making beta BIOS forks that dropped support for all pre-Ryzen 3000 CPU's. That's LITERALLY what the damn announcement was all about. This article is seriously embarrassing for this site tbh...
Except it's totally not. Zen & Zen+ CPU's can only address a 16MB BIOS. That is hard FACT. Also, AMD NEVER said the Zen 3 support was only coming to 400 series boards with 32MB BIOS chips! Did none of you, including Hilbert, read the actual dang press release? They said they were going to make standard 16MB BIOS boards work in the original announcement by making beta BIOS forks that dropped support for all pre-Ryzen 3000 CPU's. That's LITERALLY what the damn announcement was all about. This article is seriously embarrassing for this site tbh...
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If people did not watch the Gamers Nexus videos or read up on it, 16MB roms were around not because they were cheap but because pre-matisse Ryzens could not address anything above 16MB...in fact if they were put into a board with a 32MB rom and no special tricks applied, the pre-matisse Ryzen would/could not boot. So the boards that have 32MB roms and support pre-matisse Ryzens divide up the rom in such a way that the other half of the rom does not exist for them.