Core i9-9920X vs Xeon Gold 5218R

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Core i9-9920X vs Xeon Gold 5218R FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Core i9-9920X vs Xeon Gold 5218R: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Core i9-9920X

2018

Why buy it

✅Better for gaming: +6.1% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark (24,974 vs 25,000).
❌Smaller total L3 cache (19 MB vs 28 MB).
❌Less compelling for workstation-style loads than Xeon Gold 5218R, which brings 20 cores / 40 threads and 48 PCIe lanes.
❌Launch MSRP is still $1,189 MSRP, while Xeon Gold 5218R mostly shows up through inconsistent older-market listings.
❌32% higher power demand at 165W vs 125W.

Xeon Gold 5218R

2020

Why buy it

✅+0.1% higher PassMark.
✅+42.9% larger total L3 cache (28 MB vs 19 MB).
✅Better for workstations and heavier parallel workloads: 20 cores / 40 threads, plus 48 PCIe lanes vs 0.
✅Draws 125W instead of 165W, a 40W reduction.
✅100+% more PCIe lanes (48 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-9920X across 50 shared CPU benchmark tests.

Quick Answers

So, is Xeon Gold 5218R better than Core i9-9920X?

Not really, because they are built for different jobs. Xeon Gold 5218R makes more sense for workstation-style multi-core throughput, while Core i9-9920X is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon Gold 5218R is the stronger fit. You are getting 0.1% better PassMark, backed by 20 cores and 40 threads. It also has the larger cache pool with 42.9% larger total L3 cache (28 MB vs 19 MB).

Which one is the smarter buy today, not just the cheaper CPU?

Xeon Gold 5218R is still the much better call for a fresh build. Xeon Gold 5218R comes in at an unclear MSRP at unclear MSRP versus $1,189 MSRP, and it still gives you 0.1% better PassMark. Core i9-9920X only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2018 platform. Even with 100.0% better value on paper (21.0 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA2066.

Which one is more future-proof for 2026 and beyond?

Xeon Gold 5218R makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2018), 42.9% larger total L3 cache (28 MB vs 19 MB), more multi-core headroom with 20 cores / 40 threads instead of 12/24, and AVX-512 support for heavier modern compute workloads. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i9-9920X vs Xeon Gold 5218R Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Core i9-9920X

The Core i9-9920X is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 12 cores and 24 threads. Base frequency is 3.5 GHz, with boost up to 4.5 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2666. Passmark benchmark score: 24,974 points. Launch price was $1,189.

Xeon Gold 5218R

The Xeon Gold 5218R is manufactured by Intel. It was released in 24 February 2020 (5 years ago). It is based on the Cascade Lake (2019−2020) architecture. It features 20 cores and 40 threads. Base frequency is 2.1 GHz, with boost up to 4 GHz. L3 cache: 27.5 MB. L2 cache: 20 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 125 Watt. Memory support: DDR4-2667. Passmark benchmark score: 25,000 points. Launch price was $1,273.

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Processing Power

The Core i9-9920X packs 12 cores / 24 threads, while the Xeon Gold 5218R offers 20 cores / 40 threads — the Xeon Gold 5218R has 8 more cores. Boost clocks reach 4.5 GHz on the Core i9-9920X versus 4 GHz on the Xeon Gold 5218R — a 11.8% clock advantage for the Core i9-9920X (base: 3.5 GHz vs 2.1 GHz). The Core i9-9920X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Xeon Gold 5218R uses Cascade Lake (2019−2020) (14 nm). In PassMark, the Core i9-9920X scores 24,974 against the Xeon Gold 5218R's 25,000 — a 0.1% lead for the Xeon Gold 5218R. L3 cache: 19.25 MB (total) on the Core i9-9920X vs 27.5 MB on the Xeon Gold 5218R.

Feature	Core i9-9920X	Xeon Gold 5218R
Cores / Threads	12 / 24	20 / 40+67%
Boost Clock	4.5 GHz+13%	4 GHz
Base Clock	3.5 GHz+67%	2.1 GHz
L3 Cache	19.25 MB (total)	27.5 MB+43%
L2 Cache	1 MB (per core)	20 MB+1900%
Process	14 nm	14 nm
Architecture	Skylake (server) (2017−2018)	Cascade Lake (2019−2020)
PassMark	24,974	25,000

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Memory & Platform

The Core i9-9920X uses the LGA2066 socket (PCIe 3.0), while the Xeon Gold 5218R uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard.