# Does H800 support HCC? **URL:** \ **Category:** Confidential Computing\ **Created:** [February 8, 2025, 9:50am UTC](https://forums.developer.nvidia.com/t/does-h800-support-hcc/323035 "2025-02-08T09:50:54Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![E-ugene](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/e-ugene/32/368316_2.png) [@E-ugene](https://forums.developer.nvidia.com/u/E-ugene)\ **Post date:** [February 8, 2025, 9:50am UTC](https://forums.developer.nvidia.com/t/does-h800-support-hcc/323035/1 "2025-02-08T09:50:55Z")
Hey, I’m thinking of trying out HCC with my H800. Does anyone know if the H800 supports HCC? And can I use the documentation from this repo to turn on CC mode for my H800?Like these docs: [NVIDIA Trusted Computing Solutions - NVIDIA Docs](https://docs.nvidia.com/nvtrust/index.html). Also, I wanna know if successfully completing GPU Attestation means that HCC is already up and running? Thank you ! ---
**Author:** ![sbellock](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/sbellock/32/295091_2.png) [@sbellock](https://forums.developer.nvidia.com/u/sbellock)\ **Post date:** [February 8, 2025, 11:33pm UTC](https://forums.developer.nvidia.com/t/does-h800-support-hcc/323035/2 "2025-02-08T23:33:01Z")
> **[ThinkSystem NVIDIA H800 PCIe Gen5 GPUs Product Guide (withdrawn product)](https://lenovopress.lenovo.com/lp1814-thinksystem-nvidia-h800-pcie-gen5-gpu)** > > The ThinkSystem NVIDIA H800 PCIe Gen5 GPU delivers high performance, scalability, and security for every workload. It uses breakthrough innovations in the NVIDIA Hopper™ architecture to deliver industry-leading conversational AI, speeding up large... > NVIDIA Confidential Computing is a built-in security feature of Hopper that makes NVIDIA H800 the world’s first accelerator with confidential computing capabilities. Users can protect the confidentiality and integrity of their data and applications in use while accessing the unsurpassed acceleration of H800 GPUs. > And can I use the documentation from this repo to turn on CC mode for my H800? If by “this repo” you mean [GitHub - NVIDIA/gpu-admin-tools: GPU Admin Tools. Includes Confidential Computing controls for H100, and other functionality](https://github.com/NVIDIA/gpu-admin-tools), then yes. > I wanna know if successfully completing GPU Attestation means that HCC is already up and running? For the most part, yes. You may still need to set the driver’s `ReadyState` to signal that you are ready to perform real work on the GPU, or the Verifier software may do that for you. ---
**Author:** ![E-ugene](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/e-ugene/32/368316_2.png) [@E-ugene](https://forums.developer.nvidia.com/u/E-ugene)\ **Post date:** [February 10, 2025, 12:35am UTC](https://forums.developer.nvidia.com/t/does-h800-support-hcc/323035/3 "2025-02-10T00:35:17Z")
Thank you so much for answering my question! “This repo” I’m talking about is this one: [GitHub - NVIDIA/nvtrust: Ancillary open source software to support confidential computing on NVIDIA GPUs](https://github.com/nvidia/nvtrust). It includes some guide documents, like this one: [Confidential Computing Deployment Guide](https://docs.nvidia.com/cc-deployment-guide-tdx.pdf). So, I can also use these documents to enable the CC mode on my H800, right? Are there any benchmarks or something like that to test if the H800’s CC mode is fully enabled? ---
**Author:** ![Yifan-Tan](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/yifan-tan/32/270372_2.png) [@Yifan-Tan](https://forums.developer.nvidia.com/u/Yifan-Tan)\ **Post date:** [February 10, 2025, 11:35am UTC](https://forums.developer.nvidia.com/t/does-h800-support-hcc/323035/4 "2025-02-10T11:35:59Z")
Yes, you could use those documents. To test whether CC mode is enabled, you could try `nvidia-smi conf-compute -f` ---
**Author:** ![sbellock](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/sbellock/32/295091_2.png) [@sbellock](https://forums.developer.nvidia.com/u/sbellock)\ **Post date:** [February 10, 2025, 4:40pm UTC](https://forums.developer.nvidia.com/t/does-h800-support-hcc/323035/5 "2025-02-10T16:40:59Z")
> [@E-ugene](#): > > Are there any benchmarks or something like that to test if the H800’s CC mode is fully enabled? You can do simple `H2D` / `D2H` transfers and see the performance drop due to CPU-side encryption and decryption. ---
**Author:** ![system](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/system/32/68080_2.png) [@system](https://forums.developer.nvidia.com/u/system)\ **Post date:** [February 24, 2025, 4:41pm UTC](https://forums.developer.nvidia.com/t/does-h800-support-hcc/323035/6 "2025-02-24T16:41:59Z")
Closed on February 24, 2025, 4:41pm UTC This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.