Intel Core i9-10980XE Specs & LGA2066 Details

The Intel Core i9-10980XE is a 18-core, 36-thread desktop processor for the LGA2066 socket, released in late 2019 as the flagship of the Cascade Lake-X series. It runs at a base clock of 3.0 GHz and boosts up to 4.6 GHz on a single core, with a 165W TDP and 24.75 MB of Intel Smart Cache. This article explains its full specifications, how it fits the LGA2066 platform, and what you need to know before buying or building with it.

Full Specifications at a Glance

The i9-10980XE is built on Intel’s 14nm process and uses the Cascade Lake-X microarchitecture. Here are the key numbers:

Cores/Threads: 18 cores / 36 threads
Base Clock: 3.0 GHz
Max Turbo (single core): 4.6 GHz
All-core Turbo: Approximately 3.8 GHz (depending on cooling and power limits)
Cache: 24.75 MB Intel Smart Cache (L3)
TDP: 165W (configurable up to 255W with PL2)
Memory Support: Quad-channel DDR4-2933, up to 256 GB
PCIe Lanes: 48 PCIe 3.0 lanes (44 usable for expansion)
Socket: LGA2066
Unlocked: Yes, for overclocking

It also supports Intel Turbo Boost Max 3.0, which identifies the two best cores and prioritizes them for higher single-thread performance. Unlike the earlier Core X-series parts, this model dropped support for Intel Optane persistent memory but retained AVX-512 instructions.

Understanding the LGA2066 Platform

LGA2066 is Intel’s high-end desktop (HEDT) socket, launched with the Skylake-X and Kaby Lake-X processors in 2017. It replaced the LGA2011-3 socket and was used for all Core X-series processors until the X299 chipset was phased out in favor of the LGA1700 and LGA2066’s successor, LGA4677 (for Xeon) and LGA1700 (for mainstream). The i9-10980XE is the last consumer flagship on LGA2066.

The socket itself has 2066 pins on the motherboard, with the CPU having corresponding pads. It supports quad-channel memory, which is a key advantage over mainstream platforms like LGA1200 or LGA1700, which only have dual-channel. The X299 chipset provides additional PCIe lanes, USB 3.1 Gen2, and Intel Optane support, but note that the 10980XE does not support Optane persistent memory (only the Xeon W-3200 series does).

How It Compares to Mainstream and Other HEDT CPUs

When it was released, the i9-10980XE was positioned against AMD’s Threadripper 3000 series. Here’s a quick comparison:

vs. Core i9-9900K (mainstream): The 9900K has 8 cores and 16 threads, dual-channel memory, and 16 PCIe lanes. The 10980XE offers more cores, quad-channel memory, and 48 PCIe lanes, but at a higher cost and power draw.
vs. AMD Ryzen 9 3950X: The 3950X has 16 cores and 32 threads, but uses a mainstream AM4 socket with dual-channel memory. The 10980XE generally wins in multi-threaded workloads due to 18 cores and quad-channel bandwidth, but loses in single-thread and efficiency.
vs. AMD Threadripper 3960X: The 3960X has 24 cores, 64 PCIe 4.0 lanes, and quad-channel memory. The 10980XE is cheaper but slower in multi-threaded tasks; it also lacks PCIe 4.0 support.

In real-world tests, the 10980XE performs well in video editing, 3D rendering, and scientific computing, but it runs hot and draws significant power under load. For gaming, it’s often slower than cheaper mainstream CPUs due to lower single-core clocks and higher memory latency.

Common Problems and How to Avoid Them

Owners of the i9-10980XE have reported a few issues:

High temperatures: With a 165W TDP (and up to 255W with turbo), a quality 360mm AIO or custom loop is recommended. A budget air cooler will cause thermal throttling.
Power draw: The CPU can pull over 300W under full AVX-512 load. Ensure your power supply is at least 750W for a single GPU system, and 1000W for dual GPUs.
Memory compatibility: Quad-channel setups can be finicky. Use a matched kit from your motherboard’s QVL list to avoid instability.
PCIe lane allocation: Some X299 boards share lanes between M.2 slots and PCIe slots. Check your motherboard manual to avoid disabling a slot when using two M.2 drives.

Overclocking the 10980XE is possible, but the gains are modest compared to the heat and power increase. Most users leave it at stock or enable Intel Turbo Boost Max 3.0.

Choosing a Motherboard for the 10980XE

Not all LGA2066 motherboards are equal. The X299 chipset has different revisions, and some boards have weaker VRMs that can’t handle the 10980XE’s power draw. When selecting a motherboard:

Look for boards with at least 8+ phase VRM design, preferably 10+ phases for overclocking.
Ensure the BIOS is updated to support Cascade Lake-X. Some early X299 boards need a BIOS update to recognize the 10980XE.
Check that the board has at least three M.2 slots if you need fast storage, but verify lane sharing.
Consider boards with 10GbE LAN if you do heavy network transfers, though this is rare.

Popular choices include the ASUS ROG Rampage VI Extreme Encore, MSI X299 Creator, and Gigabyte X299 Aorus Master. These boards have robust power delivery and good BIOS support.

Is It Worth Buying in 2024?

The i9-10980XE is now several generations old. In 2024, you can get a modern 16-core CPU like the Ryzen 9 7950X or Core i9-13900K that offers better performance, lower power draw, and support for DDR5 and PCIe 5.0. The main reason to buy the 10980XE is if you already have an LGA2066 motherboard and want a cheap upgrade, or if you need specific features like AVX-512 (though Intel has since disabled it on consumer CPUs).

Used prices for the 10980XE have dropped significantly, but you also need to factor in the cost of a motherboard and DDR4 memory. If you’re building a new system, a modern platform is almost always a better value. However, for professional workstations that rely on many PCIe lanes for multiple GPUs or capture cards, the 10980XE can still be a cost-effective choice.

Frequently Asked Questions

Does the i9-10980XE work on any LGA2066 motherboard?

No. It requires a motherboard with the X299 chipset and a BIOS that supports Cascade Lake-X. Some early X299 boards may need a BIOS update. Check the manufacturer’s CPU support list before buying.

What is the difference between the 10980XE and the 10900X?

The 10900X has 10 cores and 20 threads, with a base clock of 3.7 GHz and boost of 4.5 GHz. The 10980XE has 18 cores and 36 threads, but a lower base clock of 3.0 GHz. The 10980XE also has more cache and a higher TDP (165W vs 165W for the 10900X? Actually the 10900X is also 165W, but the 10980XE has more cores). In multi-threaded tasks, the 10980XE is significantly faster.

Can I use DDR3 memory with the 10980XE?

No. The LGA2066 platform only supports DDR4 memory. The memory controller is quad-channel and supports DDR4-2933 natively, but you can overclock it to higher speeds.

Does the 10980XE support ECC memory?

Yes, but only with Xeon processors. The i9-10980XE does not support ECC memory. If you need ECC, you must buy a Xeon W-3200 series processor, which also uses LGA2066 but requires a different chipset (C422).

How many PCIe lanes does the 10980XE have?

It has 48 PCIe 3.0 lanes. Of those, 44 are available for expansion (the rest are used for the chipset link). This allows for multiple GPUs and NVMe drives without running out of lanes.

Is the 10980XE good for gaming?

It can game, but it’s not ideal. Its single-core performance is lower than modern CPUs, and the high memory latency can hurt frame rates in some titles. For pure gaming, a mainstream CPU like the i5-13600K or Ryzen 7 7800X3D is faster and cheaper.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.

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