Athlon XP 3000+ vs Mobile Pentium 4 2.66

Athlon XP 3000+ vs Mobile Pentium 4 2.66 Performance Spectrum

Athlon XP 3000+

1 / 1

408

+3.3%

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.

Athlon XP 3000+ 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.

Athlon XP 3000+ 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.

Athlon XP 3000+

2001

Why buy it

✅+3.3% higher PassMark.

Trade-offs

❌Launch MSRP is still $588 MSRP, while Mobile Pentium 4 2.66 mostly shows up through inconsistent older-market listings.

Mobile Pentium 4 2.66

2003

Why buy it

Trade-offs

❌Lower PassMark (395 vs 408).

Quick Answers

So, is Athlon XP 3000+ 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 a 0.2% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Athlon XP 3000+ pulls ahead with 3.3% better PassMark.

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

For streaming, content creation, and heavier multitasking, Athlon XP 3000+ is the stronger fit. You are getting 3.3% better PassMark, backed by 1 cores and 1 threads.

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

Athlon XP 3000+ is the better buy right now. Athlon XP 3000+ comes in at an unclear MSRP at $588 MSRP versus unclear MSRP, and it still gives you 3.3% better PassMark. The compromise is that Mobile Pentium 4 2.66 is still the better pure gaming CPU with a 0.2% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (0.7 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Mobile Pentium 4 2.66 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2003 vs 2001). That makes it the safer long-term bet.

Athlon XP 3000+ vs Mobile Pentium 4 2.66 Technical Specifications

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

Athlon XP 3000+

The Athlon XP 3000+ is manufactured by AMD. It was released in Janeiro 2001 (24 years ago). It is based on the Barton (2001−2004) architecture. It features 1 cores and 1 threads. Max frequency: 2.17 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: A. Thermal design power (TDP): 68 Watt. Passmark benchmark score: 408 points. Launch price was $78.

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 Athlon XP 3000+ packs 1 cores / 1 threads, matching the Mobile Pentium 4 2.66's 1 cores. Boost clocks reach 2.17 GHz on the Athlon XP 3000+ versus 2.67 GHz on the Mobile Pentium 4 2.66 — a 20.7% clock advantage for the Mobile Pentium 4 2.66. The Athlon XP 3000+ uses the Barton (2001−2004) architecture (130 nm), while the Mobile Pentium 4 2.66 uses Northwood (2002−2004) (130 nm). In PassMark, the Athlon XP 3000+ scores 408 against the Mobile Pentium 4 2.66's 395 — a 3.2% lead for the Athlon XP 3000+. Both processors carry 0 kB of L3 cache.

Feature	Athlon XP 3000+	Mobile Pentium 4 2.66
Cores / Threads	1 / 1	1 / 2
Boost Clock	2.17 GHz	2.67 GHz+23%
L3 Cache	0 kB	0 kB
L2 Cache	512 kB	512 kB
Process	130 nm	130 nm
Architecture	Barton (2001−2004)	Northwood (2002−2004)
PassMark	408+3%	395
Geekbench 6 Single	—	800
Geekbench 6 Multi	—	800

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Memory & Platform

The Athlon XP 3000+ uses the A 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 DDR-333 on the Athlon XP 3000+ versus DDR2 on the Mobile Pentium 4 2.66 — the Mobile Pentium 4 2.66 supports -100.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 4 GB of RAM. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: AMD Socket A (Athlon XP 3000+) and 852PM,855PM (Mobile Pentium 4 2.66).

Feature	Athlon XP 3000+	Mobile Pentium 4 2.66
Socket	A	PGA478
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR-333	DDR2
Max RAM Capacity	4 GB	4 GB
RAM Channels	1	1
ECC Support	Yes	No
PCIe Lanes	0	0

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Advanced Features

Virtualization: not specified (Athlon XP 3000+) / None (Mobile Pentium 4 2.66). Primary use case: Mobile Pentium 4 2.66 targets Legacy Laptop.