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: +187.7% higher average FPS across 46 shared CPU benchmark tests.
✅+433.3% larger total L3 cache (64 MB vs 12 MB).
✅Costs $447 less on MSRP ($549 MSRP vs $996 MSRP).
✅Delivers 1416.9% more PassMark for each dollar spent, at 71.0 vs 4.7 PassMark/$ ($549 MSRP vs $996 MSRP).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌75% higher power demand at 105W vs 60W.

Xeon L5640

2010

Why buy it

✅Draws 60W instead of 105W, a 45W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 46 shared CPU benchmark tests.
❌Lower PassMark (4,659 vs 38,955).
❌Smaller total L3 cache (12 MB vs 64 MB).
❌Lower PassMark per dollar, at 4.7 vs 71.0 PassMark/$ ($996 MSRP vs $549 MSRP).

Ryzen 9 5900X

2020

Xeon L5640

2010

Why buy it

✅Better for gaming: +187.7% higher average FPS across 46 shared CPU benchmark tests.
✅+433.3% larger total L3 cache (64 MB vs 12 MB).
✅Costs $447 less on MSRP ($549 MSRP vs $996 MSRP).
✅Delivers 1416.9% more PassMark for each dollar spent, at 71.0 vs 4.7 PassMark/$ ($549 MSRP vs $996 MSRP).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Why buy it

✅Draws 60W instead of 105W, a 45W reduction.

Trade-offs

❌75% higher power demand at 105W vs 60W.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 46 shared CPU benchmark tests.
❌Lower PassMark (4,659 vs 38,955).
❌Smaller total L3 cache (12 MB vs 64 MB).
❌Lower PassMark per dollar, at 4.7 vs 71.0 PassMark/$ ($996 MSRP vs $549 MSRP).

Quick Answers

So, is Ryzen 9 5900X better than Xeon L5640?

Not in a simple one-size-fits-all way. Xeon L5640 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 187.7% more average FPS across 46 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 736.1% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 433.3% larger total L3 cache (64 MB vs 12 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 $447 cheaper on MSRP at $549 MSRP versus $996 MSRP, and it gives you a 187.7% average FPS lead across 46 shared CPU game tests in our data. It is also 1416.9% better value on MSRP (71.0 vs 4.7 PassMark/$), 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 2010), 433.3% larger total L3 cache (64 MB vs 12 MB), and more multi-core headroom with 12 cores / 24 threads instead of 6/12. 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 L5640 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Xeon L5640
1080p
low	323 FPS	116 FPS
medium	291 FPS	116 FPS
high	243 FPS	105 FPS
ultra	193 FPS	87 FPS
1440p
low	307 FPS	116 FPS
medium	248 FPS	111 FPS
high	192 FPS	86 FPS
ultra	157 FPS	70 FPS
4K
low	193 FPS	61 FPS
medium	156 FPS	55 FPS
high	115 FPS	43 FPS
ultra	103 FPS	34 FPS

Open Ryzen 9 5900X Open Xeon L5640

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Xeon L5640
1080p
low	772 FPS	116 FPS
medium	647 FPS	116 FPS
high	508 FPS	116 FPS
ultra	450 FPS	116 FPS
1440p
low	619 FPS	116 FPS
medium	536 FPS	116 FPS
high	443 FPS	116 FPS
ultra	364 FPS	107 FPS
4K
low	365 FPS	116 FPS
medium	318 FPS	116 FPS
high	289 FPS	104 FPS
ultra	255 FPS	74 FPS

Open Ryzen 9 5900X Open Xeon L5640

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Xeon L5640
1080p
low	832 FPS	116 FPS
medium	645 FPS	116 FPS
high	558 FPS	116 FPS
ultra	459 FPS	116 FPS
1440p
low	721 FPS	116 FPS
medium	565 FPS	116 FPS
high	488 FPS	116 FPS
ultra	407 FPS	116 FPS
4K
low	511 FPS	116 FPS
medium	421 FPS	116 FPS
high	374 FPS	116 FPS
ultra	308 FPS	116 FPS

Open Ryzen 9 5900X Open Xeon L5640

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Xeon L5640
1080p
low	974 FPS	116 FPS
medium	974 FPS	116 FPS
high	934 FPS	116 FPS
ultra	826 FPS	116 FPS
1440p
low	959 FPS	116 FPS
medium	843 FPS	116 FPS
high	726 FPS	116 FPS
ultra	617 FPS	116 FPS
4K
low	694 FPS	116 FPS
medium	621 FPS	116 FPS
high	541 FPS	116 FPS
ultra	437 FPS	116 FPS

Open Ryzen 9 5900X Open Xeon L5640

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Xeon L5640

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 L5640

The Xeon L5640 is manufactured by Intel. It was released in 16 March 2010 (15 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 2.26 GHz, with boost up to 2.8 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 60 Watt. Memory support: DDR3. Passmark benchmark score: 4,659 points. Launch price was $200.

⚡

Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Xeon L5640 offers 6 cores / 12 threads — the Ryzen 9 5900X has 6 more cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 2.8 GHz on the Xeon L5640 — a 52.6% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 2.26 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon L5640 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon L5640's 4,659 — a 157.3% lead for the Ryzen 9 5900X. L3 cache: 64 MB on the Ryzen 9 5900X vs 12 MB (total) on the Xeon L5640.

Feature	Ryzen 9 5900X	Xeon L5640
Cores / Threads	12 / 24+100%	6 / 12
Boost Clock	4.8 GHz+71%	2.8 GHz
Base Clock	3.7 GHz+64%	2.26 GHz
L3 Cache	64 MB+433%	12 MB (total)
L2 Cache	512K (per core)+100%	256 kB (per core)
Process	7 nm, 12 nm-78%	32 nm
Architecture	Vermeer (Zen3) (2020−2022)	Westmere-EP (2010−2011)
PassMark	38,955+736%	4,659
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 L5640 uses LGA1366 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900X versus DDR3 1333 MHz on the Xeon L5640 — the Xeon L5640 supports 199.9% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon L5640 supports up to 288 GB of RAM compared to 128 GB — 76.9% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 5900X) vs 3 (Xeon L5640). PCIe lanes: 24 (Ryzen 9 5900X) vs 0 (Xeon L5640) — the Ryzen 9 5900X offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and Intel 5520,Intel X58 (Xeon L5640).

Feature	Ryzen 9 5900X	Xeon L5640
Socket	AM4	LGA1366
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200+33%	DDR3 1333 MHz
Max RAM Capacity	128 GB	288 GB+125%
RAM Channels	2	3+50%
ECC Support	Yes	Yes
PCIe Lanes	24	0

🔧

Advanced Features

Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: AMD-V (Ryzen 9 5900X) vs true (Xeon L5640). Primary use case: Ryzen 9 5900X targets Workstation, Xeon L5640 targets Server Low Power. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Ryzen 9 5900X	Xeon L5640
Integrated GPU	No	No
Unlocked	Yes	No
AVX-512	No	No
Virtualization	AMD-V	true
Target Use	Workstation	Server Low Power

💰

Value Analysis

The Ryzen 9 5900X launched at $549 MSRP, while the Xeon L5640 debuted at $996. On MSRP ($549 vs $996), the Ryzen 9 5900X is $447 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 4.7 pts/$ for the Xeon L5640 — making the Ryzen 9 5900X the 175.3% better value option.