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X370 Gaming K4 BIOS 3.30 9/14/2017

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ShampooCA View Drop Down
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    Posted: 14 Sep 2017 at 12:35pm
1.With JEDEC 2666MHz DDR4 module, default set DDR4 frequency to 2666MHz. Test with SANMAX SMD4-U8G48MH-26VR and SMD4-U16G48MH-26VR.
PS1. Windows update is available for version P3.00 or later.

Anyone try this yet?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rares Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 2017 at 2:20pm
I don't get it Disapprove What does it mean exactly ? Those Asrock descriptions are so vague.
X370 Gaming K4 / Ryzen 1700 @ 3.725 / G.Skill FlareX 14-14-14-14-34 @ 3200 XMP / Sapphire Nitro RX480 / SSD x 3
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 2017 at 3:47pm
AMD Ryzen supports DDR4 2666 default, that means it is capable of that frequency without overclocking the RAM. JEDEC 2666 means the RAM's default frequency is 2666 (not 2133 or 2400 like older kits).

If you look at CPUz under the memory tab you will see JEDEC and XMP columns. XMP (eXtreme Memory Profile) is a little different as it forces the RAM to operate beyond it's components rated speeds, typically with higher than rated voltages. 

In other words, this is a good thing, it means that AM4 platforms on that BIOS will default to DDR4 2666 even with XMP turned OFF in the UEFI, provided the RAM has a JEDEC 2666 profile. You would need to make sure the kit supports JEDEC 2666 at the time of purchase however. Most currently available kits only support 2133 or 2400 via JEDEC. 

All in all it isn't all that important to the average consumer, most users will use XMP and overclock their RAM as high as they can get it. For the enterprise/workstation user however JEDEC is a much more robust and stable standard and is used preferentially over XMP in data centers, workstations and the like. At the end of the day, gaming and daily use require a lot less stability than something like a high end render station that can peg all available threads and memory at 100% usage for hours on end.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rares Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 2017 at 4:09pm
Originally posted by Xaltar Xaltar wrote:

AMD Ryzen supports DDR4 2666 default, that means it is capable of that frequency without overclocking the RAM. JEDEC 2666 means the RAM's default frequency is 2666 (not 2133 or 2400 like older kits).

If you look at CPUz under the memory tab you will see JEDEC and XMP columns. XMP (eXtreme Memory Profile) is a little different as it forces the RAM to operate beyond it's components rated speeds, typically with higher than rated voltages. 

In other words, this is a good thing, it means that AM4 platforms on that BIOS will default to DDR4 2666 even with XMP turned OFF in the UEFI, provided the RAM has a JEDEC 2666 profile. You would need to make sure the kit supports JEDEC 2666 at the time of purchase however. Most currently available kits only support 2133 or 2400 via JEDEC. 

All in all it isn't all that important to the average consumer, most users will use XMP and overclock their RAM as high as they can get it. For the enterprise/workstation user however JEDEC is a much more robust and stable standard and is used preferentially over XMP in data centers, workstations and the like. At the end of the day, gaming and daily use require a lot less stability than something like a high end render station that can peg all available threads and memory at 100% usage for hours on end.

Excellent post. Thanks for this Wink
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 2017 at 4:27pm
Happy to help Wink
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Asingo Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 2017 at 6:24pm
Will agesa 1.0.07 update come soon? 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ShampooCA Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 2017 at 9:11pm
I have a feeling that information is going to go right over many novice users' heads, and the forum is going to flood with "BIOS 3.30 bricked my board, I can't boot with my RAM that could only do 2133MHz!".

Since no one bothers to check compatibility before putting stuff together these days.

Here we go!  LOL

I'm very content with my current setup on BIOS 3.00, so I won't be updating....but then again I say that everytime.  

It probably won't help my CPU overclock, but going to try for 4GHz on this one.  I'm currently stable at 3.85GHz.

Cheers to frequent BIOS updates!  :)
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ket View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ket Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 2017 at 9:21pm
I really need to find the time to test some of these K4 UEFIs last one was 3.1 and that was pretty good. Still had problems running 3200MHz RAM kits though.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 2017 at 9:44pm
Originally posted by ShampooCA ShampooCA wrote:

I have a feeling that information is going to go right over many novice users' heads, and the forum is going to flood with "BIOS 3.30 bricked my board, I can't boot with my RAM that could only do 2133MHz!".

Since no one bothers to check compatibility before putting stuff together these days.

Here we go!  LOL

I'm very content with my current setup on BIOS 3.00, so I won't be updating....but then again I say that everytime.  

It probably won't help my CPU overclock, but going to try for 4GHz on this one.  I'm currently stable at 3.85GHz.

Cheers to frequent BIOS updates!  :)


as i understand it 2133 will be fine
this bios update was to allow jedec 2666 to work at 2666 stock not get downclocked to 2400 or 2133 at stock setings
[url=https://valid.x86.fr/jpg250][/url]

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 2017 at 10:42pm
Originally posted by datonyb datonyb wrote:


as i understand it 2133 will be fine
this bios update was to allow jedec 2666 to work at 2666 stock not get downclocked to 2400 or 2133 at stock setings

Exactly, it will allow RAM that has a JEDEC 2666 profile to operate at 2666 by default. All platforms should allow RAM to work with the highest compatible JEDEC profile supported by both the RAM and the platform. Skylake (intel) supports 2133, Kaby Lake supports 2400 and now Ryzen supports 2666. These are the official frequency specs of the memory controllers built in to the CPUs in question.

If your RAM only supports JEDEC 2400 (Kaby lake spec) then it will default to that, if only 2133 then it will use that. JEDEC, unlike XMP, is automatically detected and used by the BIOS, there is no way to change what profile is used. So this update is good news, it means that stability at 2666 seems to be common enough to enable the default 2666 JEDEC profile to load. I would imagine that while stability was more problematic, this would have been defaulted to 2133 for maximum memory compatibility, the lower the frequency the higher the odds the RAM will work. 
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