|
X370 Gaming K4 BIOS 3.30 9/14/2017 |
Post Reply 
|
Page 12> |
| Author | |
ShampooCA 
Newbie 
Joined: 13 Jun 2017 Status: Offline Points: 74 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: X370 Gaming K4 BIOS 3.30 9/14/2017Posted: 14 Sep 2017 at 12:35pm |
 |
|
|
Rares
Newbie
Joined: 04 May 2017 Location: Brasov - RO Status: Offline Points: 47 |
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2017 at 2:20pm |
|
I don't get it
 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
|
|
|
|
|
Xaltar
Moderator Group 
Joined: 16 May 2015 Location: Europe Status: Online Points: 24278 |
Post Options
Thanks(0)
Quote Reply
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.
|
|
|
|
|
|
|
Rares
Newbie
Joined: 04 May 2017 Location: Brasov - RO Status: Offline Points: 47 |
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2017 at 4:09pm |
Excellent post. Thanks for this
 |
|
|
X370 Gaming K4 / Ryzen 1700 @ 3.725 / G.Skill FlareX 14-14-14-14-34 @ 3200 XMP / Sapphire Nitro RX480 / SSD x 3
|
|
|
|
|
Xaltar
Moderator Group
Joined: 16 May 2015 Location: Europe Status: Online Points: 24278 |
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2017 at 4:27pm |
|
Happy to help
|
|
|
|
|
|
|
|
Asingo
Newbie
Joined: 02 Jul 2017 Status: Offline Points: 111 |
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2017 at 6:24pm |
|
|
|
ShampooCA
Newbie
Joined: 13 Jun 2017 Status: Offline Points: 74 |
Post Options
Thanks(0)
Quote Reply
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! :)
|
|
|
|
|
ket
Senior Member 
Joined: 13 Jul 2017 Location: UK Status: Offline Points: 1676 |
Post Options
Thanks(0)
Quote Reply
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.
|
|
|
|
|
datonyb
Senior Member
Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3139 |
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2017 at 9:44pm |
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]3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold |
|
|
|
|
Xaltar
Moderator Group
Joined: 16 May 2015 Location: Europe Status: Online Points: 24278 |
Post Options
Thanks(0)
Quote Reply
Posted: 14 Sep 2017 at 10:42pm |
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.
|
|
|
|
|
|
|
|
Post Reply
|
Page 12> |
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options
Xaltar wrote: