Intel's Xeon 6+ Ships Hardware Energy Telemetry at Core Level

Intel’s Xeon 6+ ships a hardware-level energy telemetry system that exposes per-core power consumption directly to the OS — no software models, no extra tax, no guesswork.

Product director Kira Boyko confirmed at Computex 2026 that AET (Application Energy Telemetry) is a hardware hook into each core, plumbed straight into Linux perf and compatible with Intel’s toolchain. It works out of the box on every Xeon 6+ SKU, and Intel is rolling it to all future Xeons.

Hardware Telemetry Beats Software Power Models

Until now, datacenter operators relied on software approximations to estimate per-workload energy. Those models are trained on specific benchmarks and fail when real applications differ — introducing systematic error and runtime overhead. Boyko told Chips and Cheese that AET eliminates that: “hardware-level hook into the core that allows tracking” with no additional work from the user.

For the first time, you can see exactly what a single integer thread or FP-heavy kernel draws, down to the core. Boyko clarified that AET also exposes package-level and uncore energy, so you can drill from the whole SoC to a single core.

Wiring Per-Core Energy Into Orchestration

The killer use case is chargeback. Boyko described customers wanting to offer visible, per-tenant energy billing or rebates to shift utilization. With AET, a cloud provider can attribute energy cost to individual VMs or containers at hardware granularity, not via a model that might undercount a bursty AI inference workload.

Xeon 6+ uses a tile architecture: 72 clusters of 4 cores each (288 cores total on the flagship 6990E+). Boyko confirmed AET works at both the core and cluster levels. That granularity is enough to do fine-grained scheduling and power capping without reaching for external sensors.

Cross-Pollination from Datacenter to Client

Boyko noted that Xeon 6+ is the first 18A Xeon — the same process node Intel’s client chips already use. Features like AET often cross over, and the teams share “quite a bit” of information. If AET proves itself in the datacenter, expect it to appear in consumer silicon, just as Intel’s RAPL and per-core frequency controls migrated from server to client years ago.

AET is shipping now on all Xeon 6+ SKUs. The only remaining question is how fast the orchestration ecosystem — Kubernetes, SLURM, hyperscaler schedulers — will adopt the new perf counters to turn raw energy data into cost.

Source: An Interview with Intel's Kira Boyko: Xeon 6+'s Product Director
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