Athlon II X3 400e vs Xeon E5205

Athlon II X3 400e vs Xeon E5205 Performance Spectrum

Athlon II X3 400e

3 / 3

1,320

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon E5205

1,325

+0.4%

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 400e 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 400e 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 400e

2009

Why buy it

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

Trade-offs

❌Lower PassMark (1,320 vs 1,325).
❌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

❌44.4% higher power demand at 65W vs 45W.

Quick Answers

So, is Xeon E5205 better than Athlon II X3 400e?

Not really, because they are built for different jobs. Xeon E5205 makes more sense for workstation-style multi-core throughput, while Athlon II X3 400e 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 E5205 is the better pick. According to our tests, it delivers 0.9% 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 E5205 is the stronger fit. You are getting 0.4% better PassMark.

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

Xeon E5205 is still the much better call for a fresh build. Xeon E5205 comes in at an unclear MSRP at unclear MSRP versus $100 MSRP, and it still gives you a 0.9% average FPS lead across 50 shared CPU game tests in our data. Athlon II X3 400e only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2009 platform. Even with 100.0% better value on paper (13.2 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on AM3.

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

Athlon II X3 400e makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2007). That makes it the safer long-term bet.

Athlon II X3 400e vs Xeon E5205 Technical Specifications

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

Athlon II X3 400e

The Athlon II X3 400e 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 2.2 GHz, with boost up to 2.2 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: 1,320 points. Launch price was $107.

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.

⚡

Processing Power

The Athlon II X3 400e is built on the Rana (2009−2011) architecture. In PassMark, the Athlon II X3 400e scores 1,320 against the Xeon E5205's 1,325 — a 0.4% lead for the Xeon E5205. L3 cache: 0 kB on the Athlon II X3 400e vs 6 MB L2 Cache on the Xeon E5205.

Feature	Athlon II X3 400e	Xeon E5205
Cores / Threads	3 / 3	—
Boost Clock	2.2 GHz	—
Base Clock	2.2 GHz+18%	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	1,320	1,325

🧠

Memory & Platform

The Athlon II X3 400e uses the AM3 socket (PCIe 2.0), while the Xeon E5205 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.