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X370 gaming x, how much memory my bios chip have
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xhue View Drop Down
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    Posted: 03 Feb 2019 at 2:36am
Yes, I forgot how to divide by 8...

Anyhow, eve top-of-the-line ASUS boards have only 16MB.

It all boils down to what OEMs will do. I for one couldn't care less if support for 3000-series Ryzen means no support for 2000- or 1000- series (due to them being left out to make room).

You can't run 2 CPUs on 1 socket, so why would you care if your BIOS blob can handle 2 or 3 simultaneously?
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Points: 706 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray62 Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 2019 at 1:29am
Originally posted by xhue xhue wrote:

ASUS are advertising even the B350 boards with 128Mb BIOS chip! Check out their site!

Also, every board is advertised with CrashFree BIOS. Something that ASRock lack even on their top AM4 models.


That is not better regarding the size, just 16 MByte too...
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MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE
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I have to correct my posting: I meant MegaByte, not Mbit ;-)
Originally posted by Ray62 Ray62 wrote:


My x370 board has a 128 MBit (16 MByte) chip (16384 KBytes), probably a candidate which will not support Ryzen3. The newer boards with x470 mostly are using a 256 MBit (32 MByte) flash for the bios.
Asrock Fatal1ty X370 Professional Gaming Offline
Under test:
MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE
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Points: 634 		Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jan 2019 at 7:23pm
ASUS are advertising even the B350 boards with 128Mb BIOS chip! Check out their site!

Also, every board is advertised with CrashFree BIOS. Something that ASRock lack even on their top AM4 models.
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Originally posted by fnordie fnordie wrote:

x470 Fatality Gamink K4 has BIOS Size: 16384 KBytes. i just checked myself


well, then looks asrock will figure something out, to get new cpus work on old mb
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x470 Fatality Gamink K4 has BIOS Size: 16384 KBytes. i just checked myself
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Originally posted by Ray62 Ray62 wrote:

Under Linux, you can use "dmidecode -t bios" to get detailed information for the bios like ROM Size.

Under Windows, use HWiNFO64:
->Motherboard->SMBIOS DMI->BIOS and you can see the bios size in KBytes.


Totally forgot about these... Nice job!

On the topic - https://www.anandtech.com/show/12971/amd-bios-limitations-bristol-ridge-dropped-from-certain-motherboards

Even for older mobos there are ways to get new CPUs work on them. We just need to go whine on Reddit and there is a good cahnce AMD and OEM/ODM mat listen! They did for the mobile drivers, so why shouldn't they for the way bigger desktop user base?
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Originally posted by Ray62 Ray62 wrote:

Under Linux, you can use "dmidecode -t bios" to get detailed information for the bios like ROM Size.

Under Windows, use HWiNFO64:
->Motherboard->SMBIOS DMI->BIOS and you can see the bios size in KBytes.

My x370 board has a 16 MBit chip (16384 KBytes), probably a candidate which will not support Ryzen3. The newer boards with x470 mostly are using a 32 MBit flash for the bios.


same as mine, damn..
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Under Linux, you can use "dmidecode -t bios" to get detailed information for the bios like ROM Size.

Under Windows, use HWiNFO64:
->Motherboard->SMBIOS DMI->BIOS and you can see the bios size in KBytes.

My x370 board has a 16 MBit chip (16384 KBytes), probably a candidate which will not support Ryzen3. The newer boards with x470 mostly are using a 32 MBit flash for the bios.
Asrock Fatal1ty X370 Professional Gaming Offline
Under test:
MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE
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Totally plausible scenario.

For one, you can take a look at your mobo and try to find the BIOS chip. Then google its part number for details. I doubt any manufacturer will provide you directly with their BIOS chip sizes.

Another thing - I don't think most manufacturers will support AM4 until 2020. Even if the chip itself could be capable of the new binaries, chance is that most boards will drop support for Ryzen 3 and leter.
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