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 i5-10400F

2020

Why buy it

✅Better for gaming: +77.6% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $836 less on MSRP ($160 MSRP vs $996 MSRP).
✅Delivers 1640.8% more PassMark for each dollar spent, at 81.4 vs 4.7 PassMark/$ ($160 MSRP vs $996 MSRP).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Xeon L5640.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Xeon L5640

2010

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 50 shared CPU benchmark tests.
❌Lower PassMark (4,659 vs 13,029).
❌Lower PassMark per dollar, at 4.7 vs 81.4 PassMark/$ ($996 MSRP vs $160 MSRP).
❌No boxed cooler included, unlike Core i5-10400F.

Core i5-10400F

2020

Xeon L5640

2010

Why buy it

✅Better for gaming: +77.6% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $836 less on MSRP ($160 MSRP vs $996 MSRP).
✅Delivers 1640.8% more PassMark for each dollar spent, at 81.4 vs 4.7 PassMark/$ ($160 MSRP vs $996 MSRP).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Xeon L5640.

Why buy it

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 50 shared CPU benchmark tests.
❌Lower PassMark (4,659 vs 13,029).
❌Lower PassMark per dollar, at 4.7 vs 81.4 PassMark/$ ($996 MSRP vs $160 MSRP).
❌No boxed cooler included, unlike Core i5-10400F.

Quick Answers

So, is Core i5-10400F 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 Core i5-10400F 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, Core i5-10400F is the better pick here. According to our tests, it delivers 77.6% 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, Core i5-10400F is the better fit. You are getting 179.7% better PassMark, backed by 6 cores and 12 threads.

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

Core i5-10400F is the smarter buy today. Core i5-10400F is $836 cheaper on MSRP at $160 MSRP versus $996 MSRP, and it gives you a 77.6% average FPS lead across 50 shared CPU game tests in our data. It is also 1640.8% better value on MSRP (81.4 vs 4.7 PassMark/$), 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?

Core i5-10400F is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2010) and more multi-core headroom with 6 cores / 12 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.

Core i5-10400F Benchmark Check

Xeon L5640 Benchmark Check

Path of Exile 2

Preset	Core i5-10400F	Xeon L5640
1080p
low	192 FPS	116 FPS
medium	152 FPS	116 FPS
high	123 FPS	105 FPS
ultra	100 FPS	87 FPS
1440p
low	153 FPS	116 FPS
medium	119 FPS	111 FPS
high	97 FPS	86 FPS
ultra	79 FPS	70 FPS
4K
low	82 FPS	61 FPS
medium	70 FPS	55 FPS
high	55 FPS	43 FPS
ultra	43 FPS	34 FPS

Open Core i5-10400F Open Xeon L5640

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-10400F	Xeon L5640
1080p
low	326 FPS	116 FPS
medium	318 FPS	116 FPS
high	290 FPS	116 FPS
ultra	253 FPS	116 FPS
1440p
low	326 FPS	116 FPS
medium	292 FPS	116 FPS
high	267 FPS	116 FPS
ultra	234 FPS	107 FPS
4K
low	309 FPS	116 FPS
medium	258 FPS	116 FPS
high	235 FPS	104 FPS
ultra	199 FPS	74 FPS

Open Core i5-10400F Open Xeon L5640

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-10400F	Xeon L5640
1080p
low	326 FPS	116 FPS
medium	326 FPS	116 FPS
high	326 FPS	116 FPS
ultra	326 FPS	116 FPS
1440p
low	326 FPS	116 FPS
medium	326 FPS	116 FPS
high	326 FPS	116 FPS
ultra	326 FPS	116 FPS
4K
low	326 FPS	116 FPS
medium	326 FPS	116 FPS
high	289 FPS	116 FPS
ultra	229 FPS	116 FPS

Open Core i5-10400F Open Xeon L5640

League of Legends

League of Legends

Valorant

Preset	Core i5-10400F	Xeon L5640
1080p
low	326 FPS	116 FPS
medium	326 FPS	116 FPS
high	326 FPS	116 FPS
ultra	326 FPS	116 FPS
1440p
low	326 FPS	116 FPS
medium	326 FPS	116 FPS
high	326 FPS	116 FPS
ultra	326 FPS	116 FPS
4K
low	326 FPS	116 FPS
medium	326 FPS	116 FPS
high	326 FPS	116 FPS
ultra	326 FPS	116 FPS

Open Core i5-10400F Open Xeon L5640

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-10400F and Xeon L5640

Core i5-10400F

The Core i5-10400F is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 13,029 points. Launch price was $155.

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

Both the Core i5-10400F and Xeon L5640 share an identical 6-core/12-thread configuration. Boost clocks reach 4.3 GHz on the Core i5-10400F versus 2.8 GHz on the Xeon L5640 — a 42.3% clock advantage for the Core i5-10400F (base: 2.9 GHz vs 2.26 GHz). The Core i5-10400F uses the Comet Lake (2020−2025) architecture (14 nm), while the Xeon L5640 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Core i5-10400F scores 13,029 against the Xeon L5640's 4,659 — a 94.6% lead for the Core i5-10400F. Both processors carry 12 MB (total) of L3 cache.

Feature	Core i5-10400F	Xeon L5640
Cores / Threads	6 / 12	6 / 12
Boost Clock	4.3 GHz+54%	2.8 GHz
Base Clock	2.9 GHz+28%	2.26 GHz
L3 Cache	12 MB (total)	12 MB (total)
L2 Cache	256K (per core)	256 kB (per core)
Process	14 nm-56%	32 nm
Architecture	Comet Lake (2020−2025)	Westmere-EP (2010−2011)
PassMark	13,029+180%	4,659
Cinebench R23 Multi	8,191	—
Geekbench 6 Single	1,454	—
Geekbench 6 Multi	5,783	—

🧠

Memory & Platform

The Core i5-10400F uses the LGA1200 socket (PCIe 3.0), while the Xeon L5640 uses LGA1366 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i5-10400F 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 (Core i5-10400F) vs 3 (Xeon L5640). PCIe lanes: 16 (Core i5-10400F) vs 0 (Xeon L5640) — the Core i5-10400F offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F) and Intel 5520,Intel X58 (Xeon L5640).

Feature	Core i5-10400F	Xeon L5640
Socket	LGA1200	LGA1366
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR4-2666+33%	DDR3 1333 MHz
Max RAM Capacity	128 GB	288 GB+125%
RAM Channels	2	3+50%
ECC Support	No	Yes
PCIe Lanes	16	0

🔧

Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x, VT-d (Core i5-10400F) vs true (Xeon L5640). Primary use case: Core i5-10400F targets Gaming, Xeon L5640 targets Server Low Power. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.

Feature	Core i5-10400F	Xeon L5640
Integrated GPU	No	No
Unlocked	No	No
AVX-512	No	No
Virtualization	VT-x, VT-d	true
Target Use	Gaming	Server Low Power

💰

Value Analysis

The Core i5-10400F launched at $160 MSRP, while the Xeon L5640 debuted at $996. On MSRP ($160 vs $996), the Core i5-10400F is $836 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-10400F delivers 81.4 pts/$ vs 4.7 pts/$ for the Xeon L5640 — making the Core i5-10400F the 178.3% better value option.