Core 2 Duo E4400 vs Xeon L3406

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.

Core 2 Duo E4400 vs Xeon L3406 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.

Core 2 Duo E4400 vs Xeon L3406: Pros, Cons & Final Verdict

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

Core 2 Duo E4400

2007

Why buy it

✅Costs $76 less on MSRP ($113 MSRP vs $189 MSRP).
✅Delivers 65.9% more PassMark for each dollar spent, at 9.7 vs 5.8 PassMark/$ ($113 MSRP vs $189 MSRP).
✅Includes a boxed cooler (Yes), unlike Xeon L3406.

Trade-offs

❌Lower PassMark (1,095 vs 1,104).
❌Less compelling for workstation-style loads than Xeon L3406, which brings 2 cores / 4 threads.
❌116.7% higher power demand at 65W vs 30W.

Xeon L3406

2010

Why buy it

✅Better for workstations and heavier parallel workloads: 2 cores / 4 threads.
✅Draws 30W instead of 65W, a 35W reduction.

Trade-offs

❌Lower PassMark per dollar, at 5.8 vs 9.7 PassMark/$ ($189 MSRP vs $113 MSRP).
❌No boxed cooler included, unlike Core 2 Duo E4400.

Quick Answers

So, is Xeon L3406 better than Core 2 Duo E4400?

Not really, because they are built for different jobs. Xeon L3406 makes more sense for workstation-style multi-core throughput, while Core 2 Duo E4400 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 L3406 is the better pick. According to our tests, it delivers 1.9% more average FPS across 49 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Xeon L3406 is the stronger fit. You are getting 0.8% better PassMark, backed by 2 cores and 4 threads.

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

Xeon L3406 is still the much better call for a fresh build. Xeon L3406 comes in 67.3% more expensive on MSRP at $189 MSRP versus $113 MSRP, and it still gives you a 1.9% average FPS lead across 49 shared CPU game tests in our data. Core 2 Duo E4400 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2007 platform. Even with 65.9% better value on paper (9.7 vs 5.8 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA775.

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

Xeon L3406 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2007) and more multi-core headroom with 2 cores / 4 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core 2 Duo E4400 vs Xeon L3406 Technical Specifications

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

Core 2 Duo E4400

The Core 2 Duo E4400 is manufactured by Intel. It was released in 2008-01-01. It is based on the Allendale (2006−2009) architecture. It features 2 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,095 points. Launch price was $249.

Xeon L3406

The Xeon L3406 is manufactured by Intel. It was released in 2015-01-01. It features 2 cores and 4 threads. Base frequency is 2.26 GHz, with boost up to 2.53 GHz. L3 cache: 4 MB Intel® Smart Cache. Built on 32 nm process technology. Socket: LGA1156. Thermal design power (TDP): 30 Watt. Memory support: DDR3-1066. Passmark benchmark score: 1,104 points. Launch price was $800.

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Processing Power

The Core 2 Duo E4400 packs 2 cores / 2 threads, matching the Xeon L3406's 2 cores. Boost clocks reach 2 GHz on the Core 2 Duo E4400 versus 2.53 GHz on the Xeon L3406 — a 23.4% clock advantage for the Xeon L3406 (base: 2 GHz vs 2.26 GHz). The Core 2 Duo E4400 is built on the Allendale (2006−2009) architecture. In PassMark, the Core 2 Duo E4400 scores 1,095 against the Xeon L3406's 1,104 — a 0.8% lead for the Xeon L3406. L3 cache: 0 kB on the Core 2 Duo E4400 vs 4 MB Intel® Smart Cache on the Xeon L3406.

Feature	Core 2 Duo E4400	Xeon L3406
Cores / Threads	2 / 2	2 / 4
Boost Clock	2 GHz	2.53 GHz+26%
Base Clock	2 GHz	2.26 GHz+13%
L3 Cache	0 kB	4 MB Intel® Smart Cache
L2 Cache	2 MB	—
Process	65 nm	32 nm-51%
Architecture	Allendale (2006−2009)	—
PassMark	1,095	1,104
Geekbench 6 Single	208	—

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Memory & Platform

The Core 2 Duo E4400 uses the LGA775 socket (PCIe 1.1), while the Xeon L3406 uses LGA1156 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core 2 Duo E4400	Xeon L3406
Socket	LGA775	LGA1156
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	DDR2-1066	—
Max RAM Capacity	16 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	0	—

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Advanced Features

Virtualization: None (Core 2 Duo E4400) / not specified (Xeon L3406). Primary use case: Core 2 Duo E4400 targets Budget. Direct competitor: Core 2 Duo E4400 rivals Athlon II X2 240.

Feature	Core 2 Duo E4400	Xeon L3406
Integrated GPU	No	—
Unlocked	No	—
AVX-512	No	—
Virtualization	None	—
Target Use	Budget	—

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Value Analysis

At launch, the Core 2 Duo E4400 was priced at $113, while the Xeon L3406 came in at $189. On launch pricing ($113 vs $189), Core 2 Duo E4400 was $76 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Duo E4400 delivers 9.7 pts/$ vs 5.8 pts/$ for the Xeon L3406 — making the Core 2 Duo E4400 the 49.6% better value option.

Feature	Core 2 Duo E4400	Xeon L3406
MSRP	$113-40%	$189
Performance per Dollar	9.7+67%	5.8
Release Date	2007	2010

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