Ryzen 9 5900X vs Xeon W-11865MRE

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.

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +42.5% higher average FPS across 50 shared CPU benchmark tests.
✅+166.7% larger total L3 cache (64 MB vs 24 MB).
✅Costs $51 less on MSRP ($549 MSRP vs $600 MSRP).
✅Delivers 117.3% more PassMark for each dollar spent, at 71.0 vs 32.6 PassMark/$ ($549 MSRP vs $600 MSRP).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌200% higher power demand at 105W vs 35W.

Xeon W-11865MRE

2021

Why buy it

✅Draws 35W instead of 105W, a 70W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (19,589 vs 38,955).
❌Smaller total L3 cache (24 MB vs 64 MB).
❌Lower PassMark per dollar, at 32.6 vs 71.0 PassMark/$ ($600 MSRP vs $549 MSRP).

Ryzen 9 5900X

2020

Xeon W-11865MRE

2021

Why buy it

✅Better for gaming: +42.5% higher average FPS across 50 shared CPU benchmark tests.
✅+166.7% larger total L3 cache (64 MB vs 24 MB).
✅Costs $51 less on MSRP ($549 MSRP vs $600 MSRP).
✅Delivers 117.3% more PassMark for each dollar spent, at 71.0 vs 32.6 PassMark/$ ($549 MSRP vs $600 MSRP).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Why buy it

✅Draws 35W instead of 105W, a 70W reduction.

Trade-offs

❌200% higher power demand at 105W vs 35W.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (19,589 vs 38,955).
❌Smaller total L3 cache (24 MB vs 64 MB).
❌Lower PassMark per dollar, at 32.6 vs 71.0 PassMark/$ ($600 MSRP vs $549 MSRP).

Quick Answers

So, is Ryzen 9 5900X better than Xeon W-11865MRE?

Not in a simple one-size-fits-all way. Xeon W-11865MRE makes more sense for workstation-style multi-core throughput, while Ryzen 9 5900X is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 5900X is the better pick here. According to our tests, it delivers 42.5% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 5900X is the better fit. You are getting 98.9% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 166.7% larger total L3 cache (64 MB vs 24 MB).

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

Ryzen 9 5900X is the smarter buy today. Ryzen 9 5900X is $51 cheaper on MSRP at $549 MSRP versus $600 MSRP, and it gives you a 42.5% average FPS lead across 50 shared CPU game tests in our data. It is also 117.3% better value on MSRP (71.0 vs 32.6 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Xeon W-11865MRE is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2020). That makes it the safer long-term pick.

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.

Ryzen 9 5900X Benchmark Check

Xeon W-11865MRE Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Xeon W-11865MRE
1080p
low	323 FPS	165 FPS
medium	291 FPS	145 FPS
high	243 FPS	118 FPS
ultra	193 FPS	98 FPS
1440p
low	307 FPS	141 FPS
medium	248 FPS	120 FPS
high	192 FPS	97 FPS
ultra	157 FPS	81 FPS
4K
low	193 FPS	77 FPS
medium	156 FPS	71 FPS
high	115 FPS	56 FPS
ultra	103 FPS	44 FPS

Open Ryzen 9 5900X Open Xeon W-11865MRE

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Xeon W-11865MRE
1080p
low	772 FPS	297 FPS
medium	647 FPS	257 FPS
high	508 FPS	217 FPS
ultra	450 FPS	196 FPS
1440p
low	619 FPS	255 FPS
medium	536 FPS	228 FPS
high	443 FPS	198 FPS
ultra	364 FPS	171 FPS
4K
low	365 FPS	158 FPS
medium	318 FPS	143 FPS
high	289 FPS	135 FPS
ultra	255 FPS	119 FPS

Open Ryzen 9 5900X Open Xeon W-11865MRE

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Xeon W-11865MRE
1080p
low	832 FPS	490 FPS
medium	645 FPS	490 FPS
high	558 FPS	490 FPS
ultra	459 FPS	419 FPS
1440p
low	721 FPS	490 FPS
medium	565 FPS	490 FPS
high	488 FPS	445 FPS
ultra	407 FPS	362 FPS
4K
low	511 FPS	444 FPS
medium	421 FPS	375 FPS
high	374 FPS	331 FPS
ultra	308 FPS	268 FPS

Open Ryzen 9 5900X Open Xeon W-11865MRE

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Xeon W-11865MRE
1080p
low	974 FPS	490 FPS
medium	974 FPS	490 FPS
high	934 FPS	490 FPS
ultra	826 FPS	490 FPS
1440p
low	959 FPS	490 FPS
medium	843 FPS	490 FPS
high	726 FPS	490 FPS
ultra	617 FPS	490 FPS
4K
low	694 FPS	490 FPS
medium	621 FPS	482 FPS
high	541 FPS	429 FPS
ultra	437 FPS	373 FPS

Open Ryzen 9 5900X Open Xeon W-11865MRE

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Xeon W-11865MRE

Ryzen 9 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

Xeon W-11865MRE

The Xeon W-11865MRE is manufactured by Intel. It was released in 26 August 2021 (4 years ago). It is based on the Tiger Lake-H (2021) architecture. It features 8 cores and 16 threads. Base frequency is 2.1 GHz, with boost up to 4.7 GHz. L3 cache: 24 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: FCBGA1787. Thermal design power (TDP): 35 Watt. Memory support: DDR4. Passmark benchmark score: 19,589 points. Launch price was $480.

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Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Xeon W-11865MRE offers 8 cores / 16 threads — the Ryzen 9 5900X has 4 more cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 4.7 GHz on the Xeon W-11865MRE — a 2.1% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 2.1 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon W-11865MRE uses Tiger Lake-H (2021) (10 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon W-11865MRE's 19,589 — a 66.2% lead for the Ryzen 9 5900X. L3 cache: 64 MB on the Ryzen 9 5900X vs 24 MB (total) on the Xeon W-11865MRE.

Feature	Ryzen 9 5900X	Xeon W-11865MRE
Cores / Threads	12 / 24+50%	8 / 16
Boost Clock	4.8 GHz+2%	4.7 GHz
Base Clock	3.7 GHz+76%	2.1 GHz
L3 Cache	64 MB+167%	24 MB (total)
L2 Cache	512K (per core)	1.25 MB (per core)+150%
Process	7 nm, 12 nm-30%	10 nm
Architecture	Vermeer (Zen3) (2020−2022)	Tiger Lake-H (2021)
PassMark	38,955+99%	19,589
Cinebench R23 Multi	21,000	—
Geekbench 6 Single	2,174	—
Geekbench 6 Multi	11,888	—

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Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon W-11865MRE uses FCBGA1787 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	Ryzen 9 5900X	Xeon W-11865MRE
Socket	AM4	FCBGA1787
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	24	—

🔧

Advanced Features

Virtualization: AMD-V (Ryzen 9 5900X) / not specified (Xeon W-11865MRE). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Ryzen 9 5900X	Xeon W-11865MRE
Integrated GPU	No	—
Unlocked	Yes	—
AVX-512	No	—
Virtualization	AMD-V	—
Target Use	Workstation	—

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Value Analysis

The Ryzen 9 5900X launched at $549 MSRP, while the Xeon W-11865MRE debuted at $600. On MSRP ($549 vs $600), the Ryzen 9 5900X is $51 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 32.6 pts/$ for the Xeon W-11865MRE — making the Ryzen 9 5900X the 74% better value option.