Celeron M 540 vs Xeon E5405

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.

Celeron M 540 vs Xeon E5405 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.

Celeron M 540 vs Xeon E5405: Pros, Cons & Final Verdict

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

Celeron M 540

2007

Why buy it

✅Costs $123 less on MSRP ($86 MSRP vs $209 MSRP).
✅Delivers 141.8% more PassMark for each dollar spent, at 20.3 vs 8.4 PassMark/$ ($86 MSRP vs $209 MSRP).
✅Draws 1W instead of 80W, a 79W reduction.

Trade-offs

❌Lower PassMark (1,744 vs 1,753).
❌Less compelling for workstation-style loads than Xeon E5405, which brings 4 cores / 4 threads.

Xeon E5405

2007

Why buy it

✅Better for workstations and heavier parallel workloads: 4 cores / 4 threads.

Trade-offs

❌Lower PassMark per dollar, at 8.4 vs 20.3 PassMark/$ ($209 MSRP vs $86 MSRP).
❌7900% higher power demand at 80W vs 1W.

Quick Answers

So, is Xeon E5405 better than Celeron M 540?

Not really, because they are built for different jobs. Xeon E5405 makes more sense for workstation-style multi-core throughput, while Celeron M 540 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Xeon E5405 is the better pick. According to our tests, it delivers 1.5% 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 E5405 is the stronger fit. You are getting 0.5% better PassMark, backed by 4 cores and 4 threads.

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

Xeon E5405 is still the much better call for a fresh build. Xeon E5405 comes in 143.0% more expensive on MSRP at $209 MSRP versus $86 MSRP, and it still gives you a 1.5% average FPS lead across 50 shared CPU game tests in our data. Celeron M 540 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2007 platform. Even with 141.8% better value on paper (20.3 vs 8.4 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on that older platform.

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

Xeon E5405 makes more sense long term for 2026 and beyond. You are getting more multi-core headroom with 4 cores / 4 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Celeron M 540 vs Xeon E5405 Technical Specifications

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

Celeron M 540

The Celeron M 540 is manufactured by Intel. It was released in 2007-01-01. It is based on the Merom (2006−2008) architecture. It features 1 cores and 1 threads. Max frequency: 1.86 GHz. L2 cache: 1 MB. Built on 65 nm process technology. Thermal design power (TDP): 1 MB. Passmark benchmark score: 1,744 points. Launch price was $69.

Xeon E5405

The Xeon E5405 is manufactured by Intel. It was released in 11 November 2007 (18 years ago). It is based on the Harpertown (2007−2008) architecture. It features 4 cores and 4 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 12 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 80 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 1,753 points. Launch price was $209.

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Processing Power

The Celeron M 540 packs 1 cores / 1 threads, while the Xeon E5405 offers 4 cores / 4 threads — the Xeon E5405 has 3 more cores. Boost clocks reach 1.86 GHz on the Celeron M 540 versus 2 GHz on the Xeon E5405 — a 7.3% clock advantage for the Xeon E5405. The Celeron M 540 uses the Merom (2006−2008) architecture (65 nm), while the Xeon E5405 uses Harpertown (2007−2008) (45 nm). In PassMark, the Celeron M 540 scores 1,744 against the Xeon E5405's 1,753 — a 0.5% lead for the Xeon E5405.

Feature	Celeron M 540	Xeon E5405
Cores / Threads	1 / 1	4 / 4+300%
Boost Clock	1.86 GHz	2 GHz+8%
Base Clock	—	2 GHz
L3 Cache	—	12 MB L2 Cache
L2 Cache	1 MB	6 MB (total)+500%
Process	65 nm	45 nm-31%
Architecture	Merom (2006−2008)	Harpertown (2007−2008)
PassMark	1,744	1,753

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Memory & Platform

Both support up to 667 memory speed. The Xeon E5405 supports up to 32 GB of RAM compared to 4 GB — 700% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 0 PCIe lanes.

Feature	Celeron M 540	Xeon E5405
Socket	—	LGA771
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	667	DDR2-667
Max RAM Capacity	4 GB	32 GB+700%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	0	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: false (Celeron M 540) vs VT-x (Xeon E5405). Primary use case: Xeon E5405 targets Server. Direct competitor: Celeron M 540 rivals Mobile Sempron 3600+.

Feature	Celeron M 540	Xeon E5405
Integrated GPU	No	No
IGPU Model	None	—
Unlocked	No	No
AVX-512	No	No
Virtualization	false	VT-x
Target Use	—	Server

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Value Analysis

At launch, the Celeron M 540 was priced at $86, while the Xeon E5405 came in at $209. On launch pricing ($86 vs $209), Celeron M 540 was $123 cheaper. In terms of value on MSRP (PassMark points per dollar), the Celeron M 540 delivers 20.3 pts/$ vs 8.4 pts/$ for the Xeon E5405 — making the Celeron M 540 the 83% better value option.

Feature	Celeron M 540	Xeon E5405
MSRP	$86-59%	$209
Performance per Dollar	20.3+142%	8.4
Release Date	2007	2007

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