UEFI and Overclocking …
Get fast to the right UEFI settings …
ASRock Z790 PG-ITX/TB4 UEFI EZ and Advanced Mode
ASRock Z790 PG-ITX/TB4 OC Tweaker
ASRock Z790 PG-ITX/TB4 voltage settings
ASRock Z790 PG-ITX/TB4 memory settings
ASRock Z790 PG-ITX/TB4 Advanced options
ASRock Z790 PG-ITX/TB4 Tools
ASRock Z790 PG-ITX/TB4 H/W Monitor
ASRock Z790 PG-ITX/TB4 Miscellaneous
UEFI EZ and Advanced Mode …
To enter the UEFI of the Z790 PG-ITX/TB4, you have to press F2 or Del when starting the computer, as usual with ASRock. After a short moment of waiting, we are already in the UEFI. Alternatively, you can also start the UEFI via Windows by holding down the Shift key while clicking on “Restart”.
By default, the UEFI starts in ASRock’s EZ mode, which is a simplified graphical representation of the UEFI with mouse support. The extended, BIOS-like mode can be reached by pressing F6. But first let’s have a look at the EZ mode.
In the EZ mode of the UEFI, a simple overview of all important system functions awaits us. Starting at the top left, we find information about the processor as well as the working memory. Conveniently, you can immediately see if the working memory modules are installed correctly and if the XMP profile is enabled. With a click on XMP (if available), this can be selected accordingly.
Directly below that, we find an overview of the connected hard drives or SSDs. It is practical that you can check whether the installed SSDs support Intel’s VMD. However, it should be noted that Intel only supports this functionality in XEON processors, which are currently not yet available for the LGA1700.
In the right part of the overview, we find the temperature and current voltage as well as the speed of the installed fans. The “Cooler Type” field underneath can be used to quickly and easily adjust the fan profile to the cooling, but we’ll get to that later. Below that, we can update the UEFI and call up the “FAN-Tastic Tuning” menu. Finally, the various boot media are available on the far right.
Next, let’s switch to the extended mode with F6. In contrast to EZ Mode, we only find processor and RAM information summarized in a table, but a lot of new menu items appear in the new menu bar at the top.
OC Tweaker …
The second menu item we find is called “OC Tweaker”. As usual for ASRock, we find everything important for overclocking here. New here is especially the “CPU Cooler Type” item, which was already mentioned in EZ Mode. Here you can tell the UEFI which cooler you have installed. Unfortunately, it is not clear from the description how this affects the overclockability, temperature and power limits.
If an Intel K CPU with an open multiplier is installed, the multiplier can be set here. The performance and efficiency cores can be separately overclocked or underclocked. A very practical menu item is also “Boot Performance Mode”, which ensures that the system always boots without the set Turbo multiplier, regardless of it. That means you can always call the UEFI in case of doubt to correct the settings if the system is not stable. In the past, it could happen that you had to completely reset the UEFI to get the system running again if the settings were too optimistic.
We also find all the important settings to run the processor outside of its specifications. At least in terms of clock frequencies, power and temperature limits.
Since the Intel Z790 chipset also allows overclocking individual cores, the “CPU Turbo Ration Information” overview is extremely helpful. Here you can easily see at a glance which core clocks best ex-factory. In our i3, these are the P cores 1 and 2.
voltage settings …
Here you can find everything the overclocker’s and undervolter’s heart desires. In addition to the voltage settings for the CPU, we also find voltage options for the iGPU, if present, and the RAM. The “PLL Voltage Configuration” item is crucial here, as you can use it to set an offset for simply put, everything. Be it the P-cores, E-cores, the memory controller or the integrated graphics unit.
If you want to read more into the topic, you can take a look at our Intel OC Guide.
Memory settings …
The next step is the memory settings. To get there, you have to select “DRAM Configuration” under “OC Tweaker”. After that, you can simply select the XMP profile of the respective memory or configure each parameter individually to your heart’s content. Since our DDR5 RAM does not have an XMP profile, the menu item is simply not displayed here.
Advanced options …
The third menu item is called “Advanced”, here we find the advanced options for all subsystems of the chipset. Here you can also configure in which mode the UEFI is called and which menu item is the active one. This saves a few clicks or keystrokes, especially when overclocking.
Let’s start with the “CPU Configuration”, apart from overclocking, there are all important settings for the processor here. For example, you can enable or disable virtualization support, Hyper Threading and override the thermal limits. The menu item “Legacy Game Compatibility Mode” is new here. You can deactivate the E-cores with it, since some older applications or games currently have problems with the different cores.
All relevant settings for SR-IOV, PCIe slots, multi-monitor support via the integrated GPU, its graphics memory, network, audio and Bluetooth are found under “Chipset Configuration”. In addition, the three network cards can be disabled or enabled here.
“Storage Configuration” deals with the SATA and M2 settings, as the name suggests. Besides RAID, Intel’s VMD can also be configured here, which only works with an XEON processor according to Intel. This is an extended RAID technology for M.2 SSDs.
Under “ACPI Configuration” you can configure under which circumstances the computer should be switched on automatically. The classic options PCIe, RTC, Network and USB mouse or keyboard are available here.
The menu item Tool contains all other features like Polychrome RGB, Easy RAID driver installer, an SSD eraser, as well as an M.2 NVME recovery tool. By the way, the setting to enable the isolated USB/SATA port can be found here.
The “UEFI Tech Service”, a service from ASRock that you can use in case of problems with the motherboard, is also on board. You can also install a UEFI update directly via the Internet if a newer one is available.
H/W Monitor …
The next menu item is called H/W Monitor. If you are looking for information about the system, you will find it here. As usual, you will find a good overview of voltages, temperatures and fan speeds in the H/W Monitor. You can also selectively set each fan with a separate fan curve or use ASRock’s predefined fan profiles.
If you want more info on this, feel free to check out the ASRock Z790 Taichi review.
At the end of our little excursion through the vastness of UEFI, there are 3 menu items. The first one is “Security”, here you can configure a secure boot, set the UEFI password and the HDD/SSD security settings.
ASRock Z790 PG-ITX/TB4 energy consumption …