# Ada GeForce (RTX 4090) FP8 cuBLASLt performance

**URL:** <https://forums.developer.nvidia.com/t/ada-geforce-rtx-4090-fp8-cublaslt-performance/250737>\
**Category:** GPU-Accelerated Libraries\
**Tags:** cublas\
**Created:** [April 20, 2023, 9:23pm UTC](https://forums.developer.nvidia.com/t/ada-geforce-rtx-4090-fp8-cublaslt-performance/250737 "2023-04-20T21:23:27Z")\
**Posts on this page:** 1\
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**Author:** ![dpcc](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@dpcc](https://forums.developer.nvidia.com/u/dpcc)\
**Post date:** [April 20, 2023, 10:49pm UTC](https://forums.developer.nvidia.com/t/ada-geforce-rtx-4090-fp8-cublaslt-performance/250737/4 "2023-04-20T22:49:42Z")

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Thanks for the quick response, Robert.

It’s interesting, the power consumption of the FP8 test actually never goes above 300 watts in nvidia-smi, despite 450W default power limit for the 4090. Of my 4 tests, the most power intensive one is the INT8 → INT32 which hits around 380 watts. I’ve also been able to max out the power limit in other applications. Clock speeds also seem reasonably close to the rated boost clock (~2.5GHz).

Any chance you could get some additional clarification from someone within NVIDIA?

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