Xeon L5640 vs Xeon X5667

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.

Xeon L5640

2010

Why buy it

✅Draws 60W instead of 95W, a 35W reduction.

Trade-offs

❌Lower PassMark (4,659 vs 4,697).
❌Launch MSRP is still $996 MSRP, while Xeon X5667 mostly shows up through inconsistent older-market listings.

Xeon X5667

2010

Why buy it

Trade-offs

❌58.3% higher power demand at 95W vs 60W.

Xeon L5640

2010

Xeon X5667

2010

Why buy it

✅Draws 60W instead of 95W, a 35W reduction.

Why buy it

Trade-offs

❌Lower PassMark (4,659 vs 4,697).
❌Launch MSRP is still $996 MSRP, while Xeon X5667 mostly shows up through inconsistent older-market listings.

Trade-offs

❌58.3% higher power demand at 95W vs 60W.

Quick Answers

So, is Xeon X5667 better than Xeon L5640?

Yes. Xeon X5667 is the better overall CPU here. You are getting a 2.4% average FPS lead across 4 shared CPU game tests in our data and 0.8% better PassMark, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Xeon X5667 is the better pick here. According to our tests, it delivers 2.4% more average FPS across 4 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Xeon X5667 is the better fit. You are getting 0.8% better PassMark, backed by 4 cores and 8 threads.

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

Xeon X5667 is still the faster CPU overall, but Xeon L5640 makes more sense if price matters more than absolute performance. Xeon X5667 is at an unclear MSRP at unclear MSRP versus $996 MSRP, and it gives you a 2.4% average FPS lead across 4 shared CPU game tests in our data. Xeon L5640 is also 100.0% better value on MSRP (4.7 vs 0.0 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Xeon X5667 is the safer long-term CPU choice because it gives you more overall headroom and a better platform outlook.

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.

Xeon L5640 Benchmark Check

Xeon X5667 Benchmark Check

Path of Exile 2

Preset	Xeon L5640	Xeon X5667
1080p
low	116 FPS	117 FPS
medium	116 FPS	117 FPS
high	105 FPS	105 FPS
ultra	87 FPS	85 FPS
1440p
low	116 FPS	117 FPS
medium	111 FPS	112 FPS
high	86 FPS	87 FPS
ultra	70 FPS	70 FPS
4K
low	61 FPS	62 FPS
medium	55 FPS	56 FPS
high	43 FPS	43 FPS
ultra	34 FPS	34 FPS

Open Xeon L5640 Open Xeon X5667

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Xeon L5640	Xeon X5667
1080p
low	116 FPS	117 FPS
medium	116 FPS	117 FPS
high	116 FPS	117 FPS
ultra	116 FPS	106 FPS
1440p
low	116 FPS	117 FPS
medium	116 FPS	117 FPS
high	116 FPS	117 FPS
ultra	107 FPS	95 FPS
4K
low	116 FPS	114 FPS
medium	116 FPS	100 FPS
high	104 FPS	78 FPS
ultra	74 FPS	55 FPS

Open Xeon L5640 Open Xeon X5667

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Xeon L5640	Xeon X5667
1080p
low	116 FPS	117 FPS
medium	116 FPS	117 FPS
high	116 FPS	117 FPS
ultra	116 FPS	117 FPS
1440p
low	116 FPS	117 FPS
medium	116 FPS	117 FPS
high	116 FPS	117 FPS
ultra	116 FPS	117 FPS
4K
low	116 FPS	117 FPS
medium	116 FPS	117 FPS
high	116 FPS	117 FPS
ultra	116 FPS	117 FPS

Open Xeon L5640 Open Xeon X5667

League of Legends

League of Legends

Valorant

Preset	Xeon L5640	Xeon X5667
1080p
low	116 FPS	117 FPS
medium	116 FPS	117 FPS
high	116 FPS	117 FPS
ultra	116 FPS	117 FPS
1440p
low	116 FPS	117 FPS
medium	116 FPS	117 FPS
high	116 FPS	117 FPS
ultra	116 FPS	117 FPS
4K
low	116 FPS	117 FPS
medium	116 FPS	117 FPS
high	116 FPS	117 FPS
ultra	116 FPS	117 FPS

Open Xeon L5640 Open Xeon X5667

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Xeon L5640 and Xeon X5667

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.

Xeon X5667

The Xeon X5667 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 4 cores and 8 threads. Base frequency is 3.06 GHz, with boost up to 3.46 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 4,697 points. Launch price was $80.

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Processing Power

The Xeon L5640 packs 6 cores / 12 threads, while the Xeon X5667 offers 4 cores / 8 threads — the Xeon L5640 has 2 more cores. Boost clocks reach 2.8 GHz on the Xeon L5640 versus 3.46 GHz on the Xeon X5667 — a 21.1% clock advantage for the Xeon X5667 (base: 2.26 GHz vs 3.06 GHz). Both are built on the Westmere-EP (2010−2011) architecture using a 32 nm process. In PassMark, the Xeon L5640 scores 4,659 against the Xeon X5667's 4,697 — a 0.8% lead for the Xeon X5667. Both processors carry 12 MB (total) of L3 cache.

Feature	Xeon L5640	Xeon X5667
Cores / Threads	6 / 12+50%	4 / 8
Boost Clock	2.8 GHz	3.46 GHz+24%
Base Clock	2.26 GHz	3.06 GHz+35%
L3 Cache	12 MB (total)	12 MB (total)
L2 Cache	256 kB (per core)	256 kB (per core)
Process	32 nm	32 nm
Architecture	Westmere-EP (2010−2011)	Westmere-EP (2010−2011)
PassMark	4,659	4,697

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Memory & Platform

Both processors use the LGA1366 socket with PCIe 5.0. Maximum memory speed reaches DDR3 1333 MHz on the Xeon L5640 versus DDR3-1333 on the Xeon X5667 — the Xeon L5640 supports 200% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both feature 3-channel memory with ECC support. Chipset compatibility: Intel 5520,Intel X58 (Xeon L5640) and Intel X58,Intel 5520 (Xeon X5667).

Feature	Xeon L5640	Xeon X5667
Socket	LGA1366	LGA1366
PCIe Generation	PCIe 5.0+150%	PCIe 2.0
Max RAM Speed	DDR3 1333 MHz	DDR3-1333
Max RAM Capacity	288 GB	—
RAM Channels	3	3
ECC Support	Yes	Yes
PCIe Lanes	0	—

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Advanced Features

Neither processor supports overclocking. Virtualization support: true (Xeon L5640) vs VT-x, VT-d, EPT (Xeon X5667). Primary use case: Xeon L5640 targets Server Low Power, Xeon X5667 targets Workstation. Direct competitor: Xeon X5667 rivals Core i7-980X.