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New AGESA BIOS Updates enables AMD Smart Access Memory functionality for X470 and B450
Last week when the RX 6800 series graphics cards got released, a feature called SAM (Smart Access Memory) was enabled to select X570 motherboards in combination with a Ryzen 5000 series processor and RDNA2 graphics card.
AMD announced it would support Series 500 only for SAM, however as new BIOS updates roll out based on AGESA v2 1.1.0.0, we now see X470 and B450 supported as well. In very short explaining, the processor with this feature can address the graphics card memory (in full) instead of a block that normally is 256MB. BTW above 4G support has been sitting in your mobo BIOS for a long time now as really it is a standard PCIe feature, but this seems to really take off with the new GPUs as it was never used.
The colleagues from Computerbase report that all current BIOS files for ASRock are supported as well as MSI who distributed the first beta versions to testers, which on the one hand enable Smart Access Memory on X470 and B450 and on the other hand roll out AGESA v2 1.1.8.0 with Curve Optimizer.
ASUS on the other hand also have a series of BEta BIOSes, however ASUS mentions that they do not recommend the use of this BIOS version if a Ryzen 3000 (Zen 2) or Ryzen 2000/1000 (Zen) or even an A-series processor (Bristol Ridge) is used. ALso, and quite important, this BIOS update cannot be undone. Once updated, it is not possible to switch back to an older BIOS version in the event of problems.
Version 2406 Beta Version 2020/11/24 10.36 MBytes
PRIME B450M ‑A BIOS 2406
- Update AMD AM4 AGESA V2 PI 1.1.8.0 for new CPU support
- It's highly recommended not to update this beta BIOS when using AMD AM4 Socket for AMD Ryzen ™ 3000 Series / 2000 Series / 1000 Series / A ‑ Series Desktop Processors.
- This beta BIOS can't be reversed.
| Chipset | model | BIOS | link |
|---|---|---|---|
| B450 | ASRock B450M / ac | 2.30 | Download (ZIP) |
| ASRock B450 Pro4 | 4.50 | Download (ZIP) | |
| ASRock B450M Pro4 | 4.60 | Download (ZIP) | |
| ASRock B450M Pro4-F | 2.40 | Download (ZIP) | |
| ASRock B450M / ac R2.0 | 2.30 | Download (ZIP) | |
| ASRock B450M-HDV R4.0 | 4.10 | Download (ZIP) | |
| ASRock Fatal1ty B450 Gaming K4 | 4.50 | Download (ZIP) | |
| ASRock Fatal1ty B450 Gaming-ITX / ac | 4.20 | Download (ZIP) | |
| ASRock B450M Steel Legend | 3.60 | Download (ZIP) | |
| ASRock B450 Steel Legend | 3.70 | Download (ISO) | |
| ASRock B450M Pro4 R2.0 | 4.60 | Download (ZIP) | |
| ASRock B450 Pro4 R2.0 | 4.50 | Download (ZIP) | |
| ASRock B450M-HDV | 4.20 | Download (ZIP) |
GIGABYTE AMD Motherboards Get Fitted with new AGESA Microcode (Solves the SMM Callout) - 07/09/2020 08:58 AM
Gigabyte announced today the latest BIOS update just recently for AMD platform motherboards. It not only supports 3rd Gen. AMD Ryzen XT desktop processors, but also provides effective solutions for so...
ASUS Outs New AGESA Firmware To optimize Ryzen 3000XT processors - 07/08/2020 08:40 AM
ASUS today announced that the new BIOS with AMD AGESA 1.0.0.2 update for X570 and B550 series motherboards are now available for download....
Ryzen to Post Faster With new AGESA 1.0.0.4a microcode - 04/24/2017 08:28 AM
A few weeks ago AMD released new AGESA 1.0.0.4 microcode for their Ryzen motherboards that brought better memory compatibility and performance towards the Ryzen platform. However some of you might...
AlmondMan
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#5859041 Posted on: 11/25/2020 02:44 PM
Oh wow, a BIOS for my Prime X470-Pro! I didn't actually expect that. Too bad I can't buy a CPU to use with it
Oh wow, a BIOS for my Prime X470-Pro! I didn't actually expect that. Too bad I can't buy a CPU to use with it
I_Eat_You_Alive
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Posts: 113
Joined: 2019-06-08
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Posts: 113
Joined: 2019-06-08
#5859085 Posted on: 11/25/2020 04:40 PM
Hopefully they will release a bios with the new AGESA but without the SAM support so we get the benefits of the new functions on the 400 series chipsets. The X450 and X470 bios with 5000 series support will most likely remove support for older chips so it will be a judgement call on whether to flash or not depending on the chip you plan to use.
Hopefully they will release a bios with the new AGESA but without the SAM support so we get the benefits of the new functions on the 400 series chipsets. The X450 and X470 bios with 5000 series support will most likely remove support for older chips so it will be a judgement call on whether to flash or not depending on the chip you plan to use.
Stormyandcold
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Joined: 2003-09-15
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Posts: 5838
Joined: 2003-09-15
#5859141 Posted on: 11/25/2020 06:33 PM
Well, it would make keeping the old cpu "just in-case" totally pointless. I'm actually not keen on these one-way bios upgrades, even though I understand why they do it.
Hopefully they will release a bios with the new AGESA but without the SAM support so we get the benefits of the new functions on the 400 series chipsets. The X450 and X470 bios with 5000 series support will most likely remove support for older chips so it will be a judgement call on whether to flash or not depending on the chip you plan to use.
Well, it would make keeping the old cpu "just in-case" totally pointless. I'm actually not keen on these one-way bios upgrades, even though I understand why they do it.
Reddoguk
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Joined: 2010-05-26
Senior Member
Posts: 2530
Joined: 2010-05-26
#5859152 Posted on: 11/25/2020 07:04 PM
Oof no reverse sounds bad, imagine if your car had no reverse. Kinda sounds like a disaster waiting for you if things mess up.
Oof no reverse sounds bad, imagine if your car had no reverse. Kinda sounds like a disaster waiting for you if things mess up.
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It will be interesting to see the difference in performance increase with SAM between PCIE3 and PCIE4.