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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

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.

Core i9-9920X

2018

Xeon Gold 5218R

2020

Why buy it

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

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

❌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.

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 in a simple one-size-fits-all way. Xeon Gold 5218R makes more sense for workstation-style multi-core throughput, while Core i9-9920X is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

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

For streaming, content creation, and heavier multitasking, Xeon Gold 5218R is the better fit. You are getting 0.1% better PassMark, backed by 20 cores and 40 threads. It also carries 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 the smarter buy by a wide margin for a fresh build. Xeon Gold 5218R is at an unclear MSRP at unclear MSRP versus $1,189 MSRP, and it gives you 0.1% better PassMark. Core i9-9920X only looks stronger on raw value math because it is extremely cheap, but that is mostly used-market pricing on an obsolete 2018 platform. Even with 100.0% better value on paper (21.0 vs 0.0 PassMark/$), it really only makes sense as a very 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 is the more future-proof choice 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 should age better as games, background tasks, and creator workloads get heavier.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Core i9-9920X Benchmark Check

Xeon Gold 5218R Benchmark Check

Path of Exile 2

Preset	Core i9-9920X	Xeon Gold 5218R
1080p
low	173 FPS	186 FPS
medium	150 FPS	151 FPS
high	121 FPS	123 FPS
ultra	102 FPS	96 FPS
1440p
low	145 FPS	146 FPS
medium	122 FPS	115 FPS
high	98 FPS	92 FPS
ultra	83 FPS	72 FPS
4K
low	77 FPS	68 FPS
medium	70 FPS	57 FPS
high	55 FPS	45 FPS
ultra	43 FPS	36 FPS

Open Core i9-9920X Open Xeon Gold 5218R

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i9-9920X	Xeon Gold 5218R
1080p
low	508 FPS	212 FPS
medium	437 FPS	188 FPS
high	374 FPS	161 FPS
ultra	339 FPS	136 FPS
1440p
low	438 FPS	183 FPS
medium	385 FPS	166 FPS
high	332 FPS	143 FPS
ultra	288 FPS	120 FPS
4K
low	271 FPS	119 FPS
medium	237 FPS	109 FPS
high	223 FPS	99 FPS
ultra	193 FPS	82 FPS

Open Core i9-9920X Open Xeon Gold 5218R

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i9-9920X	Xeon Gold 5218R
1080p
low	624 FPS	625 FPS
medium	547 FPS	625 FPS
high	499 FPS	625 FPS
ultra	435 FPS	625 FPS
1440p
low	577 FPS	625 FPS
medium	487 FPS	625 FPS
high	442 FPS	625 FPS
ultra	386 FPS	559 FPS
4K
low	444 FPS	487 FPS
medium	364 FPS	399 FPS
high	327 FPS	352 FPS
ultra	268 FPS	287 FPS

Open Core i9-9920X Open Xeon Gold 5218R

League of Legends

League of Legends

Valorant

Preset	Core i9-9920X	Xeon Gold 5218R
1080p
low	624 FPS	625 FPS
medium	624 FPS	625 FPS
high	624 FPS	625 FPS
ultra	624 FPS	567 FPS
1440p
low	624 FPS	625 FPS
medium	624 FPS	590 FPS
high	624 FPS	508 FPS
ultra	620 FPS	440 FPS
4K
low	624 FPS	468 FPS
medium	582 FPS	419 FPS
high	521 FPS	374 FPS
ultra	437 FPS	323 FPS

Open Core i9-9920X Open Xeon Gold 5218R

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i9-9920X and Xeon Gold 5218R

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.

⚡

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

🧠

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.