AMD is bringing back Transparent Secure Memory Encryption, or TSME, to Ryzen 9000 desktop processors after users noticed the feature had quietly disappeared from newer BIOS builds. The company says the return will arrive in a July BIOS update, ending a brief but noisy episode that made a basic security feature look like a disappearing act.
TSME is AMD’s hardware memory encryption system, and it has been part of the company’s security toolkit for more than 10 years. It automatically encrypts data in RAM, making physical attacks harder, including cold-boot attacks where someone tries to extract memory contents after a machine is powered off. In other words: the kind of thing you do not want to lose without a very good explanation.
How TSME disappeared from Ryzen 9000 BIOS files
The issue surfaced after Linux enthusiast Ben Kilpatrick checked a new system based on a Ryzen 7 9700X in April and found that the memory-encryption option was gone. He spent months chasing answers with MSI and AMD engineers. MSI reportedly told him that TSME was officially supported only on Ryzen PRO chips, even though standard Ryzen processors and motherboards were technically capable of using it.
That explanation was always going to annoy people. Ryzen PRO is AMD’s business-focused line, so a feature vanishing from consumer chips looked either like a mistake or a quiet attempt to keep one more security checkbox for the pricier tier. AMD has now said the option was present on some consumer Ryzen 9000 processors before being removed in a recent update based on AGESA 1.2.7.0.
What AMD says about Ryzen PRO and TSME
AMD says the decision to restore the feature came after ”valuable feedback from the community.” It also stressed that TSME remains a core security feature of Ryzen PRO and will continue to be supported there now and in the future. That split message is classic platform segmentation: keep the premium line protected, but avoid making mainstream buyers feel like they were quietly downgraded.
For Ryzen 9000 owners, the practical result is simple. The feature should return in July, and they will not need to give up extra memory protection on compatible systems. The broader lesson is less tidy: in an age when security settings are increasingly expected to be on by default, removing one without explanation is a fast way to turn enthusiasts into detectives.
- Feature: Transparent Secure Memory Encryption (TSME)
- Platform: Ryzen 9000 desktop processors
- Return window: July BIOS update
- Removed in: BIOS builds based on AGESA 1.2.7.0