Athlon II X3 405e vs Xeon E5205

Athlon II X3 405e vs Xeon E5205 Performance Spectrum

Athlon II X3 405e

3 / 3

1,331

+0.5%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon E5205

1,325

0.0%

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 405e vs Xeon E5205 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 405e vs Xeon E5205: 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 405e

2009

Why buy it

✅Draws 45W instead of 65W, a 20W reduction.

Trade-offs

❌Launch MSRP is still $100 MSRP, while Xeon E5205 mostly shows up through inconsistent older-market listings.

Xeon E5205

2007

Why buy it

Trade-offs

❌Lower PassMark (1,325 vs 1,331).
❌44.4% higher power demand at 65W vs 45W.

Quick Answers

So, is Athlon II X3 405e better than Xeon E5205?

Not really, because they are built for different jobs. Xeon E5205 makes more sense for workstation-style multi-core throughput, while Athlon II X3 405e is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Athlon II X3 405e is the better pick. According to our tests, it delivers 0.8% 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, Athlon II X3 405e is the stronger fit. You are getting 0.5% better PassMark, backed by 3 cores and 3 threads.

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

Athlon II X3 405e is the better buy right now. Athlon II X3 405e comes in at an unclear MSRP at $100 MSRP versus unclear MSRP, and it still gives you a 0.8% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (13.3 vs 0.0 PassMark/$), 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 405e makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2007). That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon II X3 405e vs Xeon E5205 Technical Specifications

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

Athlon II X3 405e

The Athlon II X3 405e is manufactured by AMD. It was released in 20 October 2009 (16 years ago). It is based on the Rana (2009−2011) architecture. It features 3 cores and 3 threads. Base frequency is 2.3 GHz, with boost up to 2.3 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 45 Watt. Memory support: DDR3. Passmark benchmark score: 1,331 points. Launch price was $80.

Xeon E5205

The Xeon E5205 is manufactured by Intel. It was released in 2015-01-01. Base frequency: 1.86 GHz. L3 cache: 6 MB L2 Cache. Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 65 Watt. Passmark benchmark score: 1,325 points. Launch price was $800.

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Processing Power

The Athlon II X3 405e is built on the Rana (2009−2011) architecture. In PassMark, the Athlon II X3 405e scores 1,331 against the Xeon E5205's 1,325 — a 0.5% lead for the Athlon II X3 405e. L3 cache: 0 kB on the Athlon II X3 405e vs 6 MB L2 Cache on the Xeon E5205.

Feature	Athlon II X3 405e	Xeon E5205
Cores / Threads	3 / 3	—
Boost Clock	2.3 GHz	—
Base Clock	2.3 GHz+24%	1.86 GHz
L3 Cache	0 kB	6 MB L2 Cache
L2 Cache	512 kB (per core)	—
Process	45 nm	45 nm
Architecture	Rana (2009−2011)	—
PassMark	1,331	1,325

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Memory & Platform

The Athlon II X3 405e uses the AM3 socket (PCIe 2.0), while the Xeon E5205 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.