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: +7.8% higher average FPS across 2 shared CPU benchmark tests.
✅+481.8% larger total L3 cache (64 MB vs 11 MB).
✅Costs $564 less on MSRP ($549 MSRP vs $1,113 MSRP).
✅Delivers 338.2% more PassMark for each dollar spent, at 71.0 vs 16.2 PassMark/$ ($549 MSRP vs $1,113 MSRP).
✅Draws 105W instead of 140W, a 35W reduction.

Trade-offs

❌Less compelling for workstation-style loads than Xeon W-2145, which brings 8 cores / 16 threads and 48 PCIe lanes.

Xeon W-2145

2017

Why buy it

✅Better for workstations and heavier parallel workloads: 8 cores / 16 threads, plus 48 PCIe lanes vs 24.
✅100% more PCIe lanes (48 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 2 shared CPU benchmark tests.
❌Lower PassMark (18,024 vs 38,955).
❌Smaller total L3 cache (11 MB vs 64 MB).
❌Lower PassMark per dollar, at 16.2 vs 71.0 PassMark/$ ($1,113 MSRP vs $549 MSRP).
❌33.3% higher power demand at 140W vs 105W.

Ryzen 9 5900X

2020

Xeon W-2145

2017

Why buy it

✅Better for gaming: +7.8% higher average FPS across 2 shared CPU benchmark tests.
✅+481.8% larger total L3 cache (64 MB vs 11 MB).
✅Costs $564 less on MSRP ($549 MSRP vs $1,113 MSRP).
✅Delivers 338.2% more PassMark for each dollar spent, at 71.0 vs 16.2 PassMark/$ ($549 MSRP vs $1,113 MSRP).
✅Draws 105W instead of 140W, a 35W reduction.

Why buy it

✅Better for workstations and heavier parallel workloads: 8 cores / 16 threads, plus 48 PCIe lanes vs 24.
✅100% more PCIe lanes (48 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Less compelling for workstation-style loads than Xeon W-2145, which brings 8 cores / 16 threads and 48 PCIe lanes.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 2 shared CPU benchmark tests.
❌Lower PassMark (18,024 vs 38,955).
❌Smaller total L3 cache (11 MB vs 64 MB).
❌Lower PassMark per dollar, at 16.2 vs 71.0 PassMark/$ ($1,113 MSRP vs $549 MSRP).
❌33.3% higher power demand at 140W vs 105W.

Quick Answers

So, is Ryzen 9 5900X better than Xeon W-2145?

Not in a simple one-size-fits-all way. Xeon W-2145 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 7.8% more average FPS across 2 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 116.1% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 481.8% larger total L3 cache (64 MB vs 11 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 $564 cheaper on MSRP at $549 MSRP versus $1,113 MSRP, and it gives you a 7.8% average FPS lead across 2 shared CPU game tests in our data. It is also 338.2% better value on MSRP (71.0 vs 16.2 PassMark/$), 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?

Ryzen 9 5900X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2017), 481.8% larger total L3 cache (64 MB vs 11 MB), and more multi-core headroom with 12 cores / 24 threads instead of 8/16. 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.

Ryzen 9 5900X Benchmark Check

Xeon W-2145 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Xeon W-2145
1080p
low	323 FPS	196 FPS
medium	291 FPS	168 FPS
high	243 FPS	136 FPS
ultra	193 FPS	105 FPS
1440p
low	307 FPS	165 FPS
medium	248 FPS	139 FPS
high	192 FPS	112 FPS
ultra	157 FPS	86 FPS
4K
low	193 FPS	80 FPS
medium	156 FPS	72 FPS
high	115 FPS	57 FPS
ultra	103 FPS	44 FPS

Open Ryzen 9 5900X Open Xeon W-2145

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Xeon W-2145
1080p
low	772 FPS	330 FPS
medium	647 FPS	285 FPS
high	508 FPS	263 FPS
ultra	450 FPS	235 FPS
1440p
low	619 FPS	294 FPS
medium	536 FPS	256 FPS
high	443 FPS	238 FPS
ultra	364 FPS	208 FPS
4K
low	365 FPS	231 FPS
medium	318 FPS	204 FPS
high	289 FPS	193 FPS
ultra	255 FPS	165 FPS

Open Ryzen 9 5900X Open Xeon W-2145

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Xeon W-2145
1080p
low	832 FPS	451 FPS
medium	645 FPS	451 FPS
high	558 FPS	451 FPS
ultra	459 FPS	451 FPS
1440p
low	721 FPS	451 FPS
medium	565 FPS	451 FPS
high	488 FPS	451 FPS
ultra	407 FPS	451 FPS
4K
low	511 FPS	451 FPS
medium	421 FPS	424 FPS
high	374 FPS	376 FPS
ultra	308 FPS	308 FPS

Open Ryzen 9 5900X Open Xeon W-2145

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Xeon W-2145
1080p
low	974 FPS	451 FPS
medium	974 FPS	451 FPS
high	934 FPS	451 FPS
ultra	826 FPS	451 FPS
1440p
low	959 FPS	451 FPS
medium	843 FPS	451 FPS
high	726 FPS	451 FPS
ultra	617 FPS	451 FPS
4K
low	694 FPS	451 FPS
medium	621 FPS	451 FPS
high	541 FPS	451 FPS
ultra	437 FPS	437 FPS

Open Ryzen 9 5900X Open Xeon W-2145

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Xeon W-2145

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-2145

The Xeon W-2145 is manufactured by Intel. It was released in 29 August 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 8 cores and 16 threads. Base frequency is 3.7 GHz, with boost up to 4.5 GHz. L3 cache: 11 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 18,024 points. Launch price was $1,113.

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Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Xeon W-2145 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 4.5 GHz on the Xeon W-2145 — a 6.5% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 3.7 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon W-2145 uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon W-2145's 18,024 — a 73.5% lead for the Ryzen 9 5900X. L3 cache: 64 MB on the Ryzen 9 5900X vs 11 MB (total) on the Xeon W-2145.

Feature	Ryzen 9 5900X	Xeon W-2145
Cores / Threads	12 / 24+50%	8 / 16
Boost Clock	4.8 GHz+7%	4.5 GHz
Base Clock	3.7 GHz	3.7 GHz
L3 Cache	64 MB+482%	11 MB (total)
L2 Cache	512K (per core)	1 MB (per core)+100%
Process	7 nm, 12 nm-50%	14 nm
Architecture	Vermeer (Zen3) (2020−2022)	Skylake (server) (2017−2018)
PassMark	38,955+116%	18,024
Cinebench R23 Multi	21,000	—
Geekbench 6 Single	2,174	—
Geekbench 6 Multi	11,888	—

🧠

Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon W-2145 uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. The Xeon W-2145 supports up to 512 GB of RAM compared to 128 GB — 120% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 5900X) vs 4 (Xeon W-2145). PCIe lanes: 24 (Ryzen 9 5900X) vs 48 (Xeon W-2145) — the Xeon W-2145 offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and Intel X299,Intel C422 (Xeon W-2145).

Feature	Ryzen 9 5900X	Xeon W-2145
Socket	AM4	LGA2011
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	DDR4-3200	DDR4-2666
Max RAM Capacity	128 GB	512 GB+300%
RAM Channels	2	4+100%
ECC Support	Yes	Yes
PCIe Lanes	24	48+100%

🔧

Advanced Features

Virtualization: AMD-V (Ryzen 9 5900X) / not specified (Xeon W-2145). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Ryzen 9 5900X	Xeon W-2145
Integrated GPU	No	No
Unlocked	Yes	—
AVX-512	No	—
Virtualization	AMD-V	—
Target Use	Workstation	—

💰

Value Analysis

The Ryzen 9 5900X launched at $549 MSRP, while the Xeon W-2145 debuted at $1113. On MSRP ($549 vs $1113), the Ryzen 9 5900X is $564 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 16.2 pts/$ for the Xeon W-2145 — making the Ryzen 9 5900X the 125.7% better value option.