华硕的新玩具DIMM Fit

zerozerone

X670E\X870E系列包含AGESA1203e的固件内存设置、调优工具。












DIMM Fit
Press [Yes] to initiate a grid search for the optimal hyperparameters for your memory. Forbest results, ensure you are at your maximum stable settings before starting. Once a Fitresult is achieved, you can use it to increase your operating frequency. Please note that thesearch process may take several hours depending on the configuration. During the process,the displayed PoST codes are irrelevant, there will be no visual display, and power rebootcycles are expected.
Press Yes] to begin DIMM Fit now.The system will return to the BIOS with the results savedto your selected Fit store once the process is complete.To stop the process mid-way,pressSafe Mode button or Clear CMoS.
This will take around 12 hours.


Extreme Tweaker\DRAM Timing ControIDIMM Fit\DIMM Fit ProlUser Guide
DIMM Fit Engineer Edition(Press Page Up/Down to scroll this guide)
DIMM Fit Engineer Edition is the unabridged form of Asus DIMM Fit Feature. While
DIMM Fit offers Memory Tuning through a very straight-forward interface, the
Engineer Edition offers a more transparent and customizable interface for advanced
users who enjoy tweaking every little detail of the Memory Sub-System.

This feature offers you the freedom of dictating the item/items you wish to include in
the Fitting process, the range of the item, the order of the items in the search for
optimal margins and the number of iterations to run for.

Understanding the rationale for how it is designed involves understanding a little bit
of the definition of good signal integrity.As the DDR Memory protocol is made up of
many signals separated into different groups with different purposes, there is usually
not a single parameter that makes overclocking good, but the combinatidiof these
parameters which are dependent on each other. Moving one affects the rest,
therefore it is useful to tune them repeatedly as each converges closer towards their
optimal point in the whole picture, relative to their counter-parts.

Step 1:
Select the targeted items by pressing Left Shift+F1.Enter yes when prompted. They
are tuned in the order you have selected them. This adds them to the list. To remove
an item from the list press Left Shift +F2 at the list page. For Voltage items, since they
are predetermined, they are directly placed in this DIMM FIT EE page and you select
and deselect them by enabling or disabling them. They are last in the order of tuning
and in the order they appear in this page.
A maximum of 20 items can be added for a single session, not inclusive of voltage
items.
Note that you can only add items related to Memory overclocking.

Step 2:
Enter the DFEE sub-menu where the tuning list and other options reside.
For the BIOS user interface, these items can be roughly categorized into menu items
(options with a menu selection bar), integer line edit items (options with an integer
text input) and floating-point line edit items (options with a float as a text input).
For integer line edit items you setup their initial value at the position of the itemname.
The Up value determines how much higher than initial it may be allowed to go
and the Down value determines how much lower than initial it may be allowed to go.
It is the user's responsibility to ensure the range is within valid values.
For menu items you setup their initial index value at the position of the item name.
The index value each option maps to is displayed in the help string the first time you
add the item. (The help string is not populated at subsequent boots for speed and
efficiency reasons)The Up value determines how much higher than the initial index it
may be allowed to go and the Down value determines how much lower than the initial
index it may be allowed to go. It is the user's responsibility to ensure the range is
within valid values.
For Voltage items,you specify the start voltage and minimum and maximum voltage
to sweep until. For eacn step taken, you specity this with the option numberr of units
pre Stepsize.The stepsizes have predetermined range so that things are kept
reasonable so you may see it round up or down to these when typing in values.
After configuring the initial values and range, we move onto step 3.

step 3:
Fail to Next determines if the search on the current item should be aborted when
worsening margins are observed moving towards a certain direction. It may for back
towards the other direction if that range has not been traversed yet, or onto the next
item keeping the best value observed.This relies on the assumption that the item's
value is continuous in nature.On top of this, since various signal bus are trained
relative to a repetitive clock signal, there are often pockets of quantized values that
work well. If in doubt you can leave it at Disabled.

Step 4:
Select the Selection Rules among the 4 offered:
Deterministic + Worse Margins for a more deterministic and conservative validation
procedure that decides based on worst margin observed and thorough memory
stability.This makes it less inclined to update an item's value unless there is a good
measure of certainty.
Deterministic + Total Margins is similar but decides based on total margins observed.
Relaxed + Worse Margins only performs a basic Memory Test for stability and decides
based on worst margin observed if the test checks out.
Likewise Relaxed + Total Margins is similar but decides based on total margins
observed.
Choose based on how false positive averse you are.

Step 5:
Select the number of loops to Fit for.The optimized values will keep updating after
every search on an item concludes, resulting in new starting points per iteration. 2 is
recommended, since you can continue where you left off anyway.

Step 6:
Finally select Dimm Fit Engineer Edition Enabled and save and exit to start!
Similar to DIMM Fit, there will be no video image during the process and system
resets are expected behavior. Once it has finished, the items selected will be parked
at their optimal values.
In the event that you stop the search mid-way, for example by hitting the safe mode
button, the current item on the search list will be parked where it was last tested, and
this will not be it's optimal value, so do note this.

Tip:
It is often more beneficial to place items that you know have lesser margin at the top
of the list, ie, the overclocked system only boots with these items set within a narrow
range.
If you set a huge range then be prepared to wait for a long time.For high range items
you can think about setting 20 to 30 steps from the initial value.
DFEE merely overrides the target options to their optimal values.
This is not automatically saved into any profiles so to keep the settings after Clear
CMOS, you need to save them into a profile and load the profile after the CMOs clear.

zerozerone

特别注意：
官方固件说明提示：新版包含了AGESA1203e的固件，升级后不可逆，不能恢复老版本固件。

个人提示：
如生产力机器，谨慎升级，审慎尝试新工具，风险责任需自甘。

LambdaDelta

我的proart x670e这个是灰的

glb1031

能用通俗易懂的话介绍一下吗

wwwyj

intel有很久了，感觉作用不大

Perceptor

deepseek nb:
以下是您提供的BIOS内容的专业翻译：

【DIMM Fit 主界面】
按下[Yes]开始为内存执行超参数网格搜索。为获得最佳效果，请确保当前处于最大稳定配置状态。一旦获得拟合结果，可将其用于提升运行频率。请注意：搜索过程可能耗时数小时（视配置而定）。过程中显示的PoST代码无参考意义，屏幕将无显示画面，且系统会多次重启。

按[Yes]立即开始DIMM Fit。完成后系统将返回BIOS界面，结果会保存至您选择的存储位置。若需中途终止，请按下安全模式按钮或清除CMOS。
预计耗时约12小时。

【Extreme Tweaker\DRAM Timing Control\DIMM Fit\DIMM Fit Pro用户指南】
DIMM Fit工程师版（按Page Up/Down滚动本指南）

DIMM Fit工程师版是华硕DIMM Fit功能的完整形态。基础版提供简洁的内存调优界面，而工程师版则为热衷精细调控内存子系统的高级用户提供更透明、可定制的操作界面。

本功能允许您自主选择拟合项目、设定参数范围、调整搜索优先级及迭代次数。其设计原理基于信号完整性理论：DDR内存协议由多组功能各异的信号组成，超频效果取决于这些相互关联参数的组合优化——调整单个参数会产生连锁反应，因此需要反复协调使其达到全局最优。

▌ 操作步骤：

第一步：
按Left Shift+F1选择目标项目（确认提示时输入yes），项目将按选定顺序进行调优。最多可添加20个项目（不含电压项）。注意：仅限内存超频相关参数。移除项目请按Left Shift+F2。电压项为预设值，直接在本页面启用/禁用即可，它们将最后被优化且按页面显示顺序执行。

第二步：
进入DFEE子菜单设置调优列表：

整型参数：在项目名处设置初始值，"Up/Down"定义允许的增减范围

菜单项：设置初始索引值（首次添加时帮助文本会显示选项映射），"Up/Down"控制索引变化范围

电压项：设定起始电压、最小/最大电压及步进值（系统会自动取整到合理步进）
用户需自行确保所有范围有效。

第三步：
"Fail to Next"选项决定当某参数朝特定方向调整导致余量恶化时是否中止当前搜索：可反向尝试未探索范围，或直接保留当前最佳值跳至下一项（基于参数连续性假设）。若不确定建议保持禁用。

第四步：
从4种验证规则中选择：

确定性+最差余量：基于最差余量的保守验证，除非明确改善否则不更新参数

确定性+总体余量：类似上述但基于总体余量评估

宽松+最差余量：仅基础内存测试，通过后按最差余量决策

宽松+总体余量：类似上述但基于总体余量
根据您对误报的容忍度选择。

第五步：
设置拟合循环次数（推荐2次），每次迭代后会更新优化值作为新起点。

第六步：
启用"DIMM Fit Engineer Edition"后保存退出即可开始。与基础版相同，过程中将无视频输出且系统会多次重启。完成后所选参数将被锁定至最优值。
若中途终止（如按下安全模式按钮），当前测试项将停留在最后测试值（非最优值），请特别注意。

▌ 实用技巧：

将余量较小的关键参数（如超频后仅能在窄范围内稳定的项目）置于列表顶部

大范围搜索将显著增加耗时，建议高位参数设置20-30步进

DFEE仅覆盖目标参数最优值，不会自动保存配置。清除CMOS后需通过加载预设文件恢复设置

（注：原文中"option numberr of units pre Stepsize"疑似笔误，已按上下文译为"步进值"）

sekiroooo

还以为 DIMM Flex  ，或者 dimm  on the fly

xy.

glb1031 发表于 2025-6-19 09:02
能用通俗易懂的话介绍一下吗

把相对来说有些影响的参数, 主要是一些第二第三时序 (不含 odt), 循环让 bios 去自动测试
绝大多数使用者除了第一时序, trfc, trefi, 其它都不懂, 主要就是处理这种情况

sekiroooo

Perceptor 发表于 2025-6-19 09:16
deepseek nb:
以下是您提供的BIOS内容的专业翻译：

应该 就是 内存参数松紧程度的描述吧，asus就不能 直接说memory timing   tightest  tighter  

relax，给几个直观的选项 不就完了吗，那个生涩英语 真是给鬼看的，

华硕的bios越做越烂、越来 跃臃肿，amd平台内存OC本来就玩不出花来了，asus这鬼子还搞这么多无用花活

jimmystar

zerozerone 发表于 2025-6-19 03:36
特别注意：
官方固件说明提示：新版包含了AGESA1203e的固件，升级后不可逆，不能恢复老版本固件。

刚升完。。。看到这句。。

zerozerone

jimmystar 发表于 2025-6-19 09:58
刚升完。。。看到这句。。

如要退回，试试flashback.

对比了下升级前后bios首页信息的模块，除了AGESA其他没有变化，主板EC版本更新情况未知，理论上通过flashback可以回退。
x670e、b6xx主板上使用8000\9000\90003d的U，需谨慎回退，
X670E等初始的、早期的、不支持新3d等新U的BIOS版本用于flashback或可造成未知故障。
如退回，使用1203d版本的固件通过rename工具制作flashback版本，进行回退。
可参照BIOS版本支持处理器列表。

neo1728

想问一下，bios里如何截出像楼主这样的bios图呢

楼主的马甲

jimmystar 发表于 2025-6-19 09:58
刚升完。。。看到这句。。

编程器应该可以

djdaniel

x870e-e 一直都有,还是习惯手动调

zerozerone

neo1728 发表于 2025-6-19 12:57
想问一下，bios里如何截出像楼主这样的bios图呢

ASUS,这几年的主流DIY主板固件、插USB盘（可能需要格式FAT32），固件gui界面状态下F12截图保存BMP至U盘。