Tech Heads' Security in Focus - BitLocker Hardware Acceleration is Coming

Data security is non-negotiable in today’s business environment, and Microsoft’s BitLocker has long been a trusted solution for full-disk encryption. With BitLocker, sensitive business data in long-term storage on the hard drive is protected from compromise through robust, military grade encryption. But here’s something you may not realize: if your organization uses BitLocker on modern NVMe drives (non-volatile memory express – now the standard hard drive on almost all contemporary workstations), you could be sacrificing a significant amount of performance and productivity without even knowing it. 

Hidden Cost of Software Encryption 

BitLocker encrypts and decrypts data in real time, which historically added only a small overhead. That was fine when storage speeds were limited by SATA interfaces. But NVMe drives, now standard issue in most new PCs, are a different story. These drives connect directly to the CPU via PCIe, delivering blazing-fast throughput and responsiveness. With this massive increase in read/write speed between CPU and long-term storage media, BitLocker’s software-based encryption can’t keep up. On NVMe systems, the CPU cycles required for encryption become a bottleneck, slowing down tasks like video editing, large code compilations, and even gaming. In some cases, performance can drop dramatically—far more than the “single-digit percentage” impact you might expect (see Figure 1 below). 

Hardware Acceleration Is Coming 

Microsoft announced that starting with Windows 11 updates in late 2025, BitLocker will support hardware-accelerated encryption. This means future devices equipped with next-generation CPUs and SoCs—such as the latest Intel chips unveiled at CES this week—will offload encryption tasks to dedicated cryptographic engines. As you can see from Figure 1, this capability will provide near-native storage performance with enterprise-grade security. For professionals working with large datasets, creative assets, or high-speed workflows, this could translate into significant productivity gains. 

Why This Matters for Your Strategic Roadmap 

Unfortunately, Microsoft’s hardware acceleration won’t be available on current hardware. If your fleet is running today’s processors, BitLocker will continue to impose a performance penalty. That’s why now is the time to plan. As you refresh devices over the next 12–24 months, prioritize systems that support BitLocker hardware acceleration. Doing so ensures your organization benefits from both uncompromised security and the full speed of modern NVMe storage. 

Key Actions for IT Leaders 

1. Assess Current Impact: Run manage-bde -status on your devices to confirm whether BitLocker is hardware-accelerated. If not, you’re likely seeing reduced performance. 
2. Update Procurement Criteria: Include hardware acceleration capability in your endpoint standards for 2026 and beyond. 
3. Communicate the Value: Frame this as a productivity initiative, not just a security upgrade. Faster encryption means faster workflows, happier users, and better ROI on high-performance hardware. 

Security and speed should never be at odds. By aligning your hardware refresh strategy with Microsoft’s BitLocker advancements, you can deliver both—keeping data safe while unlocking the full potential of your technology investments. If you're interested in developing a comprehensive IT strategy that takes these latest advancements into account, don't hesitate to contact a Tech Heads security consultant today!

 Forrest Palamountain – Security Lead, Tech Heads Inc. – CISSP