D&H BX80673I99980X

The Intel Core i9-9980XE is an 18-core, 36-thread HEDT processor that still delivers top-tier multi-threaded performance for rendering and virtualization. But it's stuck on the aging X299 platform with PCIe 3.0 and DDR4, and the price is hard to justify for a new build. Only worth it if you already own an X299 board and need a core count upgrade.

The PassMark numbers tell the story. We're looking at 143,309 multi-thread and 4,547 single-thread. That multi-core score is best-in-class in our database, which means if you're doing video encoding, 3D rendering, or compiling large codebases, this thing chews through work. The single-thread score is also excellent for its age, so everyday responsiveness doesn't suffer the way it does on some older server chips.

In practice, 18 cores and 36 threads at 4.4GHz boost means you can run multiple VMs, stream, and render at the same time without the system falling over. AVX-512 support is a nice bonus for certain scientific and AI workloads. But the 165W TDP is no joke, and you'll want a serious cooler. The efficiency percentile is surprisingly high for a chip this old, but that's relative to other HEDT parts, not modern efficiency kings.

Against the AMD Ryzen 7 9800X3D, the 9980XE wins on raw core count and multi-threaded throughput, but the 9800X3D destroys it in gaming and single-thread tasks while sipping power. The Intel Core Ultra 9 285K is a closer fight on multi-core, but it brings PCIe 5.0, DDR5, and a much more modern platform. The 9980XE's only real advantage there is AVX-512, which Intel actually dropped from some newer consumer chips.

If you're looking at used server silicon like the EPYC or Xeon options in our comparison set, the 9980XE is more approachable for a desktop builder. It runs on standard X299 boards with standard cooling, no server quirks. But those server chips often offer more cores and ECC support for similar money on the used market. The 9980XE sits in an awkward middle ground: too expensive to be a budget workstation chip, too old to compete with modern HEDT or high-end desktop parts.

Value is where this gets tricky. At $1,758 USD, you're paying a premium for old silicon. For that money, you could grab a modern Ryzen 9 or Core Ultra 9 with better single-thread performance, newer platform features, and a real upgrade path. The CAD 1,123 listing is more palatable, but you're still buying into a dead-end socket. If you find a refurbished 9980XE for a steep discount and already own an X299 board, it's a different conversation. But as a new build in 2025, the value just isn't there for most people.

The Core i9-9980XE is Intel's 18-core, 36-thread monster from the Skylake-X era, sitting on the LGA2066 socket and aimed squarely at heavy productivity and workstation builds. It's a 14nm chip with a 3.0GHz base clock, 4.4GHz turbo, and 24.75MB of L3 cache. If you're hunting for a high-core-count desktop CPU for rendering, virtualization, or AI prototyping, this one still turns heads, even if it's no longer the new hotness.

Pricing is all over the place. We see a US listing around $1,758 and a Canadian listing at CAD 1,123. That's a big gap, and the refurbished market is where most of these live now. So the real question isn't whether the 9980XE is powerful, it's whether an older HEDT platform makes sense for you in 2025.

For pure multi-threaded grunt, this chip is still an absolute unit. Our database puts its multi-thread score at the very top of the charts, and single-thread performance is right up there too. But the platform itself, X299, is aging, and that shows in things like PCIe 3.0 and DDR4-2666 memory support.

Skip the 9980XE if you're building a new system from scratch. Gamers should look at the Ryzen 7 9800X3D or a high-clocked Core i7/i9 instead, you'll get better frame rates for less money. If you need ECC memory or more than 18 cores, check out used EPYC or Xeon workstation options. And if you just want a fast daily driver, a modern mid-range CPU will feel snappier in everyday tasks while using a fraction of the power.

Should you buy the Core i9-9980XE? Only if you already own an X299 motherboard and need more cores without a full platform swap. It's still a multi-threaded beast, and for rendering or virtualization, it'll keep up with chips that cost more. But for a new build, the platform is a dead end. No PCIe 4.0, no DDR5, no upgrade path beyond this generation.

If you're building fresh, put your money into a modern Ryzen 9 or Core Ultra 9 setup. You'll get better single-thread performance, newer features, and a platform that won't be obsolete the day you buy it. The 9980XE was a monster in 2018, and it's still impressive, but time has moved on.