Athlon II X3 405e vs Core 2 Duo U7700

Athlon II X3 405e vs Core 2 Duo U7700 Performance Spectrum

Athlon II X3 405e

3 / 3

1,331

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Core 2 Duo U7700

2 / 2

1,335

+0.3%

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 Core 2 Duo U7700 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 Core 2 Duo U7700: 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

✅Costs $162 less on MSRP ($100 MSRP vs $262 MSRP).
✅Delivers 161.2% more PassMark for each dollar spent, at 13.3 vs 5.1 PassMark/$ ($100 MSRP vs $262 MSRP).

Trade-offs

❌Lower PassMark (1,331 vs 1,335).
❌2150% higher power demand at 45W vs 2W.

Core 2 Duo U7700

2006

Why buy it

✅+0.3% higher PassMark.
✅Draws 2W instead of 45W, a 43W reduction.

Trade-offs

❌Lower PassMark per dollar, at 5.1 vs 13.3 PassMark/$ ($262 MSRP vs $100 MSRP).

Quick Answers

So, is Athlon II X3 405e better than Core 2 Duo U7700?

It depends on what you want from the system. For gaming, Athlon II X3 405e is ahead with a 0.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core 2 Duo U7700 pulls ahead with 0.3% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core 2 Duo U7700 is the stronger fit. You are getting 0.3% better PassMark, backed by 2 cores and 2 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 $162 cheaper on MSRP at $100 MSRP versus $262 MSRP, and it still gives you a 0.3% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core 2 Duo U7700 is still stronger for heavier multi-core work with 0.3% better PassMark. It is also 161.2% better value on MSRP (13.3 vs 5.1 PassMark/$), 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 2006). That makes it the safer long-term bet.

Athlon II X3 405e vs Core 2 Duo U7700 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.

Core 2 Duo U7700

The Core 2 Duo U7700 is manufactured by Intel. It was released in 2008-01-01. It is based on the Merom-2048 (2006−2008) architecture. It features 2 cores and 2 threads. Base frequency is 1.33 GHz, with boost up to 1.33 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 65 nm process technology. Socket: P. Thermal design power (TDP): 10 Watt. Passmark benchmark score: 1,335 points. Launch price was $249.

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Processing Power

The Athlon II X3 405e packs 3 cores / 3 threads, while the Core 2 Duo U7700 offers 2 cores / 2 threads — the Athlon II X3 405e has 1 more core. Boost clocks reach 2.3 GHz on the Athlon II X3 405e versus 1.33 GHz on the Core 2 Duo U7700 — a 53.4% clock advantage for the Athlon II X3 405e (base: 2.3 GHz vs 1.33 GHz). The Athlon II X3 405e uses the Rana (2009−2011) architecture (45 nm), while the Core 2 Duo U7700 uses Merom-2048 (2006−2008) (65 nm). In PassMark, the Athlon II X3 405e scores 1,331 against the Core 2 Duo U7700's 1,335 — a 0.3% lead for the Core 2 Duo U7700. Both processors carry 0 kB of L3 cache.

Feature	Athlon II X3 405e	Core 2 Duo U7700
Cores / Threads	3 / 3+50%	2 / 2
Boost Clock	2.3 GHz+73%	1.33 GHz
Base Clock	2.3 GHz+73%	1.33 GHz
L3 Cache	0 kB	0 kB
L2 Cache	512 kB (per core)	2 MB+300%
Process	45 nm-31%	65 nm
Architecture	Rana (2009−2011)	Merom-2048 (2006−2008)
PassMark	1,331	1,335

🧠

Memory & Platform

The Athlon II X3 405e uses the AM3 socket (PCIe 2.0), while the Core 2 Duo U7700 uses P (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	Athlon II X3 405e	Core 2 Duo U7700
Socket	AM3	P
PCIe Generation	PCIe 2.0+82%	PCIe 1.1
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	0	—

💰

Value Analysis

At launch, the Athlon II X3 405e was priced at $100, while the Core 2 Duo U7700 came in at $262. On launch pricing ($100 vs $262), Athlon II X3 405e was $162 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X3 405e delivers 13.3 pts/$ vs 5.1 pts/$ for the Core 2 Duo U7700 — making the Athlon II X3 405e the 89.3% better value option.

Feature	Athlon II X3 405e	Core 2 Duo U7700
MSRP	$100-62%	$262
Performance per Dollar	13.3+161%	5.1
Release Date	2009	2006

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