#Bandwidth meaning manual#

#Bandwidth meaning manual#

If you do not follow the list, expect manual tweaking or inability to reach the full specifications of the RAM you purchase. It is imperative to follow the motherboard or memory manufacturer's QVL list for hardware that is guaranteed to work. Note, some motherboards state a high DRAM Frequency value, but it does not mean it can support any memory kit up to that frequency. But with a motherboard and CPU that is certified to be capable of a memory kit with certain frequency such as DDR4-3000, then you can enable XMP Profile in BIOS or use manual settings for the system operate at maximum performance DDR4-3000. It will only operate at DDR4-2133 due to the limitations of other hardware. For example, DDR4-3000 memory can work in most DDR4 systems even if the CPU or motherboard can only support DDR4-2133.

The benefit of this is the RAM can work in most DDR4 computers whether or not it can support the actual rated values of the RAM. The DDR4 memory standard is DDR4-2133 CL15 1.20V so this is the value all memory kits will default to in any system with no setting changes. Using CPUz, if you look below, it displays all memory profiles embedded within the modules. It is showing you with AUTO default settings in BIOS/EFI, in other words, XMP is not enabled, no changes were made to memory settings in BIOS, the system can only recognize the RAM as DDR4-2133. This value is not showing the actual maximum capabilities of the RAM it is not displaying the current operating value of the RAM. This is correct, even if you purchased DDR4-2400, DDR4-3000, or DDR4-4000+

In CPUz, BIOS, and other utilities that display memory SPD information, you may notice that the modules are recognized as DDR4-2133 or the information states 'Max Bandwidth DDR4-2133 (1066MHz)'