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.

Xeon L5640 vs Xeon X5667 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Xeon L5640 vs Xeon X5667: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

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.

Quick Answers

So, is Xeon X5667 better than Xeon L5640?

Yes. Xeon X5667 is the better all-around CPU here. It gives you a 2.2% average FPS lead across 50 shared CPU game tests in our data and 0.8% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Xeon X5667 is the better pick. According to our tests, it delivers 2.2% 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, Xeon X5667 is the stronger 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 is easier to justify if budget matters more than peak performance. Xeon X5667 comes in at an unclear MSRP at unclear MSRP versus $996 MSRP, and it still gives you a 2.2% average FPS lead across 50 shared CPU game tests in our data. Xeon L5640 is also 100.0% better value on MSRP (4.7 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget 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 room to grow and a better platform outlook.

Xeon L5640 vs Xeon X5667 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

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. Both support up to DDR3 1333 MHz memory speed. 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.