GIGABYTE issued a statement on the wrong display of SPD information on DDR5 motherboards

Since May of this year, or possibly earlier, users have reported issues with certain Gigabyte Z790 series motherboards, particularly an inability to recognize one of two memory sticks. On the evening of September 4th, Gigabyte released a statement addressing this concern, identifying two primary causes related to the D5 motherboard’s SPD (Serial Presence Detect) data display errors:

1. Various D5 memory products on the market do not have a consistent approach regarding the “SPD Write Protection” feature. Some memory products lack this “SPD Write Protection” setting.

2. D5 memory products without the “SPD Write Protection” setting, when used in conjunction with Gigabyte’s Control Center software (hereafter referred to as GCC), have a minute chance of encountering SPD data errors. Through fault replication, it has been confirmed that this issue solely affects the memory’s SPD firmware code and not the memory hardware itself. Refreshing the SPD firmware can promptly restore the memory to its standard function.

Gigabyte has announced that they’ve issued new versions of their GCC software and BIOS for the D5 motherboard. By using the latest versions of the GCC software and BIOS available on the official website, users can circumvent this problem. They recommend all Gigabyte D5 motherboard users update.

Additionally, some online commentators speculate that the issues may stem from the Gigabyte Z790 motherboard BIOS discreetly altering SPD data, leading to memory problems. They suggest that abstaining from using GCC could be a solution. However, these conjectures and solutions remain unverified.