Quick Verdict
A highly dense, E-core focused Xeon for operators that need maximum threads per socket and strong performance-per-watt for scale-out workloads, but overkill and inefficient for light or general-purpose servers.
Overview
Launch
2026
Status
LaunchedGeneration
Xeon 6+ (6th Gen Scalable, Clearwater Forest)
Market
Server / Cloud / Telecom
The Intel Xeon 6980E+ is a 264-core E-core only server processor from the Xeon 6+ Clearwater Forest family, built on Intel 18A and designed for high-density, throughput-oriented workloads such as cloud-native services, 5G core, and AI inference. It offers 528 MB of L3 cache, 12-channel DDR5-8000 memory, and 96 PCIe 5.0 lanes in a 400W TDP envelope, with a secondary 300W configurable profile for improved efficiency.
Intel’s Xeon 6980E+ sits near the top of the Clearwater Forest lineup, combining 264 Darkmont E-cores with 528 MB of L3 cache, 12-channel DDR5-8000 memory and 96 PCIe 5.0 lanes. It is explicitly designed for throughput-heavy workloads like cloud-native applications, 5G core, and AI inference, where high core counts and energy efficiency matter more than single-thread performance.
Two configurable TDP profiles (400W and 300W) let operators trade peak frequency for lower power, making it easier to optimize for different utilization levels in large fleets.
Specifications
Performance
Strong for parallel server workloads, but not designed for desktop-style productivity apps.
Excellent for hosting many VMs or containers, especially when each VM is lightweight and parallelized.
Not a target workload; low single-thread focus and no SMT make it unattractive for gaming despite high core count.
Good performance-per-watt for dense deployments, but still a 400W TDP part requiring robust cooling.
- •Low base and boost clocks compared to gaming CPUs.
- •No SMT and no integrated graphics.
- •Designed for server throughput, not frame pacing or latency-sensitive gaming.
- •No dedicated matrix engine like AMX; relies on CPU DL Boost and AVX2.
- •Suitable for CPU-based inference on many models in parallel.
- •Best used with external AI accelerators via PCIe/CXL for training or heavy inference.
Architecture
Intel 18A (2nm-class) compute tiles; Intel 3 base tiles; Intel 7 I/O tiles
Process Node
Clearwater Forest
Codename
264C / 264T
Core Config
528 MB
L3 Cache
400 W
TDP
Architecture Overview
Clearwater Forest is a tiled, E-core only Xeon 6+ design that combines compute, base, and I/O chiplets using Intel 18A, Intel 3, and Intel 7 process technologies with Foveros Direct 3D and EMIB interconnects.
CPU Design
264 Darkmont E-cores arranged in 12 compute tiles, each with six modules; each module contains 4 Darkmont cores sharing a 4 MB L2 cache, giving roughly 264 MB of total L2 across the CPU.
Memory Subsystem
12-channel DDR5-8000 memory controller supporting up to 1.5 TB of RDIMM memory, with significantly higher bandwidth than the 8-channel DDR5-6400 of previous-gen Xeon 6700E parts.
PCIe & I/O
96 PCIe 5.0 lanes from the I/O tiles, with up to 64 lanes configurable as CXL 2.0 for coherent accelerator attachment, matching the Xeon 6900P/6900E platform.
Overclocking
No unlocked multiplier; frequency and power are controlled via Intel Speed Select Technology profiles instead of manual overclocking.
- Roughly 2x cores (144 vs 288 in top SKU; 264 in 6980E+)
- 5x or more L3 cache (108 MB vs 528–576 MB)
- DDR5-8000 vs DDR5-6400 and 12 vs 8 memory channels
- Intel 18A compute tiles vs Intel 3
- Stronger performance-per-watt claims vs Xeon 6700E
Key Highlights
- Very high core count (264) for dense parallel workloads.
- Large 528 MB L3 cache and 12-channel DDR5-8000 memory.
- 96 PCIe 5.0 lanes with CXL 2.0 support for accelerators.
- Configurable 300W/400W TDP profiles for efficiency tuning.
- Intel 18A process and advanced packaging improve density and efficiency.
- High 400W TDP requires robust cooling and power design.
- No SMT and no AVX-512/AMX; less flexible for mixed workloads.
- Overkill and potentially inefficient for light or general-purpose servers.
- Platform and CPU costs are high; value depends on utilization.
- Early-stage platform; firmware and software optimization still maturing.
History
The Xeon 6980E+ is a product of Intel’s long-term shift toward chiplet-based server CPUs and dedicated E-core designs for cloud and telecom workloads. After Sierra Forest (Xeon 6700E) introduced E-core only Xeons on Intel 3, Intel planned Clearwater Forest as the 18A successor with far more cores and cache. However, weak demand for dense E-core CPUs and packaging challenges with Foveros 3D led Intel to delay Clearwater Forest from 2025 into the first half of 2026.
By then, the market had shifted further toward AI accelerators and custom Arm chips, but Intel still sees E-core Xeons as key for consolidating older sockets and running cloud-native and 5G workloads more efficiently. The 6980E+ sits near the top of this lineup, offering 264 Darkmont E-cores and 528 MB of L3 cache, and is designed to slot into existing Xeon 6900P/6900E platforms, giving OEMs a relatively straightforward upgrade path from Sierra Forest or Granite Rapids-AP systems.
Improvements over Previous Generation
- Roughly 2x cores (144 vs 288 in top SKU; 264 in 6980E+)
- 5x or more L3 cache (108 MB vs 528–576 MB)
- DDR5-8000 vs DDR5-6400 and 12 vs 8 memory channels
- Intel 18A compute tiles vs Intel 3
- Stronger performance-per-watt claims vs Xeon 6700E
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
Large-scale cloud, telecom, or AI-inference deployments where high core density, memory bandwidth, and PCIe connectivity are critical and power/cooling are provisioned for 400W sockets.
Avoid if…
- Building a general-purpose enterprise server with moderate VM counts.
- Running mostly single-threaded or latency-sensitive applications.
- Lack of cooling or power headroom for 400W CPUs.
- Workloads that benefit more from P-cores or AMX/AVX-512.
Use Cases
Interesting Facts
The 6980E+ is part of Intel’s first Xeon family built on the Intel 18A process, marking a major foundry milestone.
Clearwater Forest uses a 2.5D/3D hybrid package with compute tiles on 18A, base tiles on Intel 3, and I/O tiles on Intel 7.
Each Darkmont E-core module shares 4 MB of L2 cache among 4 cores, balancing latency and die area.
Intel claims up to 2.26x higher performance and 1.55x better performance-per-watt vs Xeon 6780E for the 6990E+ flagship.
The 6980E+ can be dropped into existing Xeon 6900P/6900E (Granite Rapids-AP/Sierra Forest-AP) platforms with a BIOS update, simplifying adoption.
Intel’s Application Energy Telemetry (AET) provides per-core, per-app energy data to help operators optimize workload placement.
Dual-socket 6980E+ systems can reach 576 cores with over 1.1 GB of L3 cache and 3 TB of DDR5 memory.
The CPU supports Intel TDX and SGX for confidential computing and VM isolation in multi-tenant clouds.
Unlike Xeon 6 P-core parts, Clearwater Forest E-cores have no AVX-512, AMX, or Hyper-Threading, focusing purely on throughput efficiency.
The 300W configurable profile reduces base clock from 2.1 GHz to 1.6 GHz and all-core turbo from 2.7 GHz to 2.2 GHz for improved efficiency.
People Also Ask
Is Intel Xeon 6980E+ good for gaming?
No. It is a server E-core CPU with low clocks and no SMT, designed for throughput, not gaming latency or frame rates.
What socket does the Xeon 6980E+ use?
It uses the LGA7529 socket, shared with Xeon 6900P/6900E (Granite Rapids-AP / Sierra Forest-AP) platforms.
How much memory does the Xeon 6980E+ support?
Up to 1.5 TB of DDR5-8000 RDIMM memory across 12 channels.
Does the Xeon 6980E+ have Hyper-Threading?
No. Darkmont E-cores do not support Hyper-Threading; there is one thread per core.
What is the difference between Xeon 6980E+ 400W and 300W profiles?
The 400W profile runs at 2.1 GHz base / 2.7 GHz all-core / 3.2 GHz max turbo, while the 300W profile reduces clocks to 1.6 GHz base / 2.2 GHz all-core for better efficiency.
Does Xeon 6980E+ support AVX-512 or AMX?
No. Clearwater Forest E-cores only support AVX2 and Intel DL Boost, not AVX-512 or AMX.
Is Xeon 6980E+ compatible with Xeon 6900P motherboards?
Yes, with a BIOS update; the Clearwater Forest CPUs are designed to be drop-in compatible with existing Xeon 6900P/6900E platforms.
What workloads is Xeon 6980E+ best for?
Cloud-native microservices, 5G core, container hosting, web serving, and CPU-based AI inference where many parallel threads matter.
How does Xeon 6980E+ compare to AMD EPYC 9755?
The 6980E+ offers more E-cores (264 vs 128) but no SMT, while EPYC 9755 has SMT and AVX-512, making it better for mixed and FP-heavy workloads.
Can I use Xeon 6980E+ in a workstation?
Technically yes on a compatible server board, but it is not optimized for workstation use cases; Xeon W or AMD Ryzen Threadripper PRO are usually better fits.
Frequently Asked Questions
Does the Xeon 6980E+ have integrated graphics?
No, it has no integrated GPU; a discrete GPU or ASPEED BMC is required for display output.
Can the Xeon 6980E+ be overclocked?
No, it has an unlocked multiplier; frequency and power are managed via Intel Speed Select Technology profiles, not manual overclocking.
What process node is the Xeon 6980E+ built on?
The compute tiles use Intel 18A, base tiles Intel 3, and I/O tiles Intel 7, combined in a Foveros Direct 3D/EMIB package.
How many PCIe lanes does the Xeon 6980E+ provide?
96 PCIe 5.0 lanes, with up to 64 configurable as CXL 2.0 for coherent accelerator attachment.
What is the max turbo frequency of the Xeon 6980E+?
Up to 3.2 GHz on a few cores, with 2.7 GHz all-core turbo in the 400W configuration.
Does the Xeon 6980E+ support CXL?
Yes, up to 64 of the 96 PCIe 5.0 lanes can be used as CXL 2.0 for cache-coherent accelerators.
Is the Xeon 6980E+ a P-core or E-core CPU?
It is an E-core only CPU using Darkmont cores, with no P-cores on the package.
What security features does the Xeon 6980E+ support?
Intel TDX, SGX, Total Memory Encryption, Crypto Acceleration, and other Xeon security features are supported.
How much L3 cache does the Xeon 6980E+ have?
528 MB of shared L3 cache across all cores.
When was the Xeon 6980E+ launched?
Intel lists Q2 2026 as the launch quarter; precise availability depends on OEM systems.