Mobile Athlon 64 2700+ vs Mobile Pentium 4 2.66

Mobile Athlon 64 2700+ vs Mobile Pentium 4 2.66 Performance Spectrum

Mobile Athlon 64 2700+

1 / 1

405

+2.5%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Mobile Pentium 4 2.66

1 / 2

395

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.

Mobile Athlon 64 2700+ vs Mobile Pentium 4 2.66 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.

Mobile Athlon 64 2700+ vs Mobile Pentium 4 2.66: Pros, Cons & Final Verdict

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

Mobile Athlon 64 2700+

2005

Why buy it

✅+2.5% higher PassMark.

Trade-offs

❌675.8% higher power demand at 512W vs 66W.

Mobile Pentium 4 2.66

2003

Why buy it

✅Draws 66W instead of 512W, a 446W reduction.

Trade-offs

❌Lower PassMark (395 vs 405).

Quick Answers

So, is Mobile Athlon 64 2700+ better than Mobile Pentium 4 2.66?

It depends on what you want from the system. For gaming, Mobile Pentium 4 2.66 is ahead with 66.9% higher max boost clock. For rendering, compiling, streaming, and heavier multitasking, Mobile Athlon 64 2700+ pulls ahead with 2.5% better PassMark.

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

For streaming, content creation, and heavier multitasking, Mobile Athlon 64 2700+ is the stronger fit. You are getting 2.5% better PassMark, backed by 1 cores and 1 threads.

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

Mobile Athlon 64 2700+ still makes the most sense overall. Mobile Athlon 64 2700+ comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 2.5% better PassMark.

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

Mobile Athlon 64 2700+ makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2005 vs 2003) and more multi-core headroom with 1 cores / 1 threads instead of 1/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Mobile Athlon 64 2700+ vs Mobile Pentium 4 2.66 Technical Specifications

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

Mobile Athlon 64 2700+

The Mobile Athlon 64 2700+ is manufactured by AMD. It was released in Agosto 2005 (20 years ago). It is based on the Clawhammer (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 1.6 GHz. L2 cache: 512K. Socket: 754. Thermal design power (TDP): 512 kB. Memory support: DDR1. Passmark benchmark score: 405 points. Launch price was $69.

Mobile Pentium 4 2.66

The Mobile Pentium 4 2.66 is manufactured by Intel. It was released in Junho 2003 (22 years ago). It is based on the Northwood (2002−2004) architecture. It features 1 cores and 2 threads. Max frequency: 2.67 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA478. Thermal design power (TDP): 66 Watt. Memory support: DDR1, DDR2. Passmark benchmark score: 395 points. Launch price was $69.

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Processing Power

The Mobile Athlon 64 2700+ packs 1 cores / 1 threads, matching the Mobile Pentium 4 2.66's 1 cores. Boost clocks reach 1.6 GHz on the Mobile Athlon 64 2700+ versus 2.67 GHz on the Mobile Pentium 4 2.66 — a 50.1% clock advantage for the Mobile Pentium 4 2.66. The Mobile Athlon 64 2700+ uses the Clawhammer (2001−2005) architecture, while the Mobile Pentium 4 2.66 uses Northwood (2002−2004) (130 nm). In PassMark, the Mobile Athlon 64 2700+ scores 405 against the Mobile Pentium 4 2.66's 395 — a 2.5% lead for the Mobile Athlon 64 2700+.

Feature	Mobile Athlon 64 2700+	Mobile Pentium 4 2.66
Cores / Threads	1 / 1	1 / 2
Boost Clock	1.6 GHz	2.67 GHz+67%
L3 Cache	—	0 kB
L2 Cache	512K	512 kB
Process	—	130 nm
Architecture	Clawhammer (2001−2005)	Northwood (2002−2004)
PassMark	405+3%	395
Geekbench 6 Single	—	800
Geekbench 6 Multi	—	800

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Memory & Platform

The Mobile Athlon 64 2700+ uses the 754 socket (PCIe 1.1), while the Mobile Pentium 4 2.66 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches 400 on the Mobile Athlon 64 2700+ versus DDR2 on the Mobile Pentium 4 2.66 — the Mobile Athlon 64 2700+ supports 19900% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Mobile Pentium 4 2.66 supports up to 4 GB of RAM compared to 2 GB — 100% more capacity for professional workloads. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: 754 (Mobile Athlon 64 2700+) and 852PM,855PM (Mobile Pentium 4 2.66).

Feature	Mobile Athlon 64 2700+	Mobile Pentium 4 2.66
Socket	754	PGA478
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	400+19900%	DDR2
Max RAM Capacity	2 GB	4 GB+100%
RAM Channels	1	1
ECC Support	No	No
PCIe Lanes	0	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: false (Mobile Athlon 64 2700+) vs None (Mobile Pentium 4 2.66). Primary use case: Mobile Pentium 4 2.66 targets Legacy Laptop. Direct competitor: Mobile Athlon 64 2700+ rivals Pentium M 715.