Athlon II X2 265 vs Athlon II X3 405e

Athlon II X2 265 vs Athlon II X3 405e Performance Spectrum

Athlon II X2 265

2 / 2

1,324

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Athlon II X3 405e

3 / 3

1,331

+0.5%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

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 X2 265 vs Athlon II X3 405e 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 X2 265 vs Athlon II X3 405e: 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 X2 265

2010

Why buy it

✅Costs $17 less on MSRP ($83 MSRP vs $100 MSRP).
✅Delivers 19.8% more PassMark for each dollar spent, at 16.0 vs 13.3 PassMark/$ ($83 MSRP vs $100 MSRP).
✅Includes a boxed cooler (Stock), unlike Athlon II X3 405e.

Trade-offs

❌Lower PassMark (1,324 vs 1,331).
❌44.4% higher power demand at 65W vs 45W.

Athlon II X3 405e

2009

Why buy it

✅+0.5% higher PassMark.
✅Draws 45W instead of 65W, a 20W reduction.

Trade-offs

❌Lower PassMark per dollar, at 13.3 vs 16.0 PassMark/$ ($100 MSRP vs $83 MSRP).
❌No boxed cooler included, unlike Athlon II X2 265.

Quick Answers

So, is Athlon II X2 265 better than Athlon II X3 405e?

It depends on what you want from the system. For gaming, Athlon II X2 265 is ahead with 43.5% higher max boost clock. For rendering, compiling, streaming, and heavier multitasking, Athlon II X3 405e pulls ahead with 0.5% better PassMark.

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 X2 265 is the better buy right now. Athlon II X2 265 comes in $17 cheaper on MSRP at $83 MSRP versus $100 MSRP, and it still gives you 43.5% higher max boost clock. The compromise is that Athlon II X3 405e is still stronger for heavier multi-core work with 0.5% better PassMark. It is also 19.8% better value on MSRP (16.0 vs 13.3 PassMark/$), 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 X2 265 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2009). That makes it the safer long-term bet.

Athlon II X2 265 vs Athlon II X3 405e Technical Specifications

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

Athlon II X2 265

The Athlon II X2 265 is manufactured by AMD. It was released in 21 September 2010 (15 years ago). It is based on the Regor (2009−2013) architecture. It features 2 cores and 2 threads. Base frequency is 3.3 GHz, with boost up to 3.3 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 65 Watt. Memory support: DDR2, DDR3. Passmark benchmark score: 1,324 points. Launch price was $83.

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.

⚡

Processing Power

The Athlon II X2 265 packs 2 cores / 2 threads, while the Athlon II X3 405e offers 3 cores / 3 threads — the Athlon II X3 405e has 1 more core. Boost clocks reach 3.3 GHz on the Athlon II X2 265 versus 2.3 GHz on the Athlon II X3 405e — a 35.7% clock advantage for the Athlon II X2 265 (base: 3.3 GHz vs 2.3 GHz). The Athlon II X2 265 uses the Regor (2009−2013) architecture (45 nm), while the Athlon II X3 405e uses Rana (2009−2011) (45 nm). In PassMark, the Athlon II X2 265 scores 1,324 against the Athlon II X3 405e's 1,331 — a 0.5% lead for the Athlon II X3 405e. Both processors carry 0 kB of L3 cache.

Feature	Athlon II X2 265	Athlon II X3 405e
Cores / Threads	2 / 2	3 / 3+50%
Boost Clock	3.3 GHz+43%	2.3 GHz
Base Clock	3.3 GHz+43%	2.3 GHz
L3 Cache	0 kB	0 kB
L2 Cache	1 MB+100%	512 kB (per core)
Process	45 nm	45 nm
Architecture	Regor (2009−2013)	Rana (2009−2011)
PassMark	1,324	1,331
Geekbench 6 Single	275	—
Geekbench 6 Multi	520	—

🧠

Memory & Platform

Both processors use the AM3 socket with PCIe 2.0. Both support up to DDR3-1333 memory speed. The Athlon II X3 405e supports up to 32 GB of RAM compared to 16 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: 760G,780G,785G,790GX,870,880G,890GX,890FX (Athlon II X2 265) and AMD AM3 (Athlon II X3 405e).

Feature	Athlon II X2 265	Athlon II X3 405e
Socket	AM3	AM3
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-1333	DDR3-1333
Max RAM Capacity	16 GB	32 GB+100%
RAM Channels	2	2
ECC Support	Yes	No
PCIe Lanes	0	0

🔧

Advanced Features

Virtualization: AMD-V (Athlon II X2 265) / not specified (Athlon II X3 405e). Primary use case: Athlon II X2 265 targets Legacy Desktop. Direct competitor: Athlon II X2 265 rivals Pentium E6700.

Feature	Athlon II X2 265	Athlon II X3 405e
Integrated GPU	No	No
Unlocked	No	—
AVX-512	No	—
Virtualization	AMD-V	—
Target Use	Legacy Desktop	—

💰

Value Analysis

At launch, the Athlon II X2 265 was priced at $83, while the Athlon II X3 405e came in at $100. On launch pricing ($83 vs $100), Athlon II X2 265 was $17 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X2 265 delivers 16.0 pts/$ vs 13.3 pts/$ for the Athlon II X3 405e — making the Athlon II X2 265 the 18.1% better value option.

Feature	Athlon II X2 265	Athlon II X3 405e
MSRP	$83-17%	$100
Performance per Dollar	16.0+20%	13.3
Release Date	2010	2009

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