Athlon II X3 440 vs Xeon L5408

Athlon II X3 440 vs Xeon L5408 Performance Spectrum

Athlon II X3 440

3 / 3

1,743

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon L5408

4 / 4

1,769

+1.5%

Pentium Dual-Core E2200

About PassMark

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.

Athlon II X3 440 vs Xeon L5408 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.

Athlon II X3 440 vs Xeon L5408: Pros, Cons & Final Verdict

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

Athlon II X3 440

2010

Why buy it

Trade-offs

❌Lower PassMark (1,743 vs 1,769).
❌Less compelling for workstation-style loads than Xeon L5408, which brings 4 cores / 4 threads.
❌Launch MSRP is still $75 MSRP, while Xeon L5408 mostly shows up through inconsistent older-market listings.
❌137.5% higher power demand at 95W vs 40W.

Xeon L5408

2008

Why buy it

✅+1.5% higher PassMark.
✅Better for workstations and heavier parallel workloads: 4 cores / 4 threads.
✅Draws 40W instead of 95W, a 55W reduction.

Trade-offs

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

Quick Answers

So, is Athlon II X3 440 better than Xeon L5408?

Not really, because they are built for different jobs. Xeon L5408 makes more sense for workstation-style multi-core throughput, while Athlon II X3 440 is the more practical desktop choice for gaming, platform cost, and everyday use.

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

For streaming, content creation, and heavier multitasking, Xeon L5408 is the stronger fit. You are getting 1.5% better PassMark, backed by 4 cores and 4 threads.

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

Athlon II X3 440 is the better buy right now. Athlon II X3 440 comes in at an unclear MSRP at $75 MSRP versus unclear MSRP, and it still gives you a 0.3% average FPS lead across 20 shared CPU game tests in our data. The compromise is that Xeon L5408 is still stronger for heavier multi-core work with 1.5% better PassMark. It is also 100.0% better value on MSRP (23.2 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Athlon II X3 440 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2008). That makes it the safer long-term bet.

Athlon II X3 440 vs Xeon L5408 Technical Specifications

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

Athlon II X3 440

The Athlon II X3 440 is manufactured by AMD. It was released in 25 January 2010 (15 years ago). It is based on the Rana (2009−2011) architecture. It features 3 cores and 3 threads. Base frequency is 3 GHz, with boost up to 3 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 1,743 points. Launch price was $47.

Xeon L5408

The Xeon L5408 is manufactured by Intel. It was released in 2015-01-01. It is based on the Harpertown (2007−2008) architecture. It features 4 cores and 4 threads. Base frequency is 2.133 GHz, with boost up to 0.13 GHz. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 40 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 1,769 points. Launch price was $800.

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Processing Power

The Athlon II X3 440 packs 3 cores / 3 threads, while the Xeon L5408 offers 4 cores / 4 threads — the Xeon L5408 has 1 more core. Boost clocks reach 3 GHz on the Athlon II X3 440 versus 0.13 GHz on the Xeon L5408 — a 183.4% clock advantage for the Athlon II X3 440 (base: 3 GHz vs 2.133 GHz). The Athlon II X3 440 uses the Rana (2009−2011) architecture (45 nm), while the Xeon L5408 uses Harpertown (2007−2008) (45 nm). In PassMark, the Athlon II X3 440 scores 1,743 against the Xeon L5408's 1,769 — a 1.5% lead for the Xeon L5408.

Feature	Athlon II X3 440	Xeon L5408
Cores / Threads	3 / 3	4 / 4+33%
Boost Clock	3 GHz+2208%	0.13 GHz
Base Clock	3 GHz+41%	2.133 GHz
L3 Cache	0 kB	—
L2 Cache	512 kB (per core)	6 MB (total)+1100%
Process	45 nm	45 nm
Architecture	Rana (2009−2011)	Harpertown (2007−2008)
PassMark	1,743	1,769+1%

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Memory & Platform

The Athlon II X3 440 uses the AM3 socket (PCIe 2.0), while the Xeon L5408 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.