Mobile Athlon 64 3000+ vs Xeon 2.66

Mobile Athlon 64 3000+ vs Xeon 2.66 Performance Spectrum

Mobile Athlon 64 3000+

1 / 1

450

+1.1%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon 2.66

1 / 1

445

0.0%

Atom 230

Pentium 4 2.26

Pentium M 1.40

Mobile Pentium 4 2.66

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 3000+ vs Xeon 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 3000+ vs Xeon 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 3000+

2003

Why buy it

✅+1.1% higher PassMark.

Trade-offs

❌475.3% higher power demand at 512W vs 89W.

Xeon 2.66

2002

Why buy it

✅Draws 89W instead of 512W, a 423W reduction.

Trade-offs

❌Lower PassMark (445 vs 450).
❌Launch MSRP is still $337 MSRP, while Mobile Athlon 64 3000+ mostly shows up through inconsistent older-market listings.

Quick Answers

So, is Xeon 2.66 better than Mobile Athlon 64 3000+?

Not really, because they are built for different jobs. Xeon 2.66 makes more sense for workstation-style multi-core throughput, while Mobile Athlon 64 3000+ is the more practical desktop choice for gaming, platform cost, and everyday use.

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

For streaming, content creation, and heavier multitasking, Mobile Athlon 64 3000+ is the stronger fit. You are getting 1.1% better PassMark, backed by 1 cores and 1 threads.

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

Xeon 2.66 is the better buy right now. Xeon 2.66 comes in at an unclear MSRP at $337 MSRP versus unclear MSRP, and it still gives you 33% higher max boost clock. The compromise is that Mobile Athlon 64 3000+ is still stronger for heavier multi-core work with 1.1% better PassMark. It is also 100.0% better value on MSRP (1.3 vs 0.0 PassMark/$), 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 Athlon 64 3000+ makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2003 vs 2002) and more multi-core headroom with 1 cores / 1 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Mobile Athlon 64 3000+ vs Xeon 2.66 Technical Specifications

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

Mobile Athlon 64 3000+

The Mobile Athlon 64 3000+ is manufactured by AMD. It was released in Agosto 2003 (22 years ago). It is based on the Oakville (2003−2004) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L2 cache: 512K. Socket: 754. Thermal design power (TDP): 512 kB. Memory support: DDR1. Passmark benchmark score: 450 points. Launch price was $69.

Xeon 2.66

The Xeon 2.66 is manufactured by Intel. It was released in 2015-01-01. It is based on the Prestonia (2002) architecture. It features 1 cores and 1 threads. Max frequency: 2.66 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA604. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 445 points. Launch price was $800.

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Processing Power

Both the Mobile Athlon 64 3000+ and Xeon 2.66 share an identical 1-core/1-thread configuration. Boost clocks reach 2 GHz on the Mobile Athlon 64 3000+ versus 2.66 GHz on the Xeon 2.66 — a 28.3% clock advantage for the Xeon 2.66. The Mobile Athlon 64 3000+ uses the Oakville (2003−2004) architecture, while the Xeon 2.66 uses Prestonia (2002) (130 nm). In PassMark, the Mobile Athlon 64 3000+ scores 450 against the Xeon 2.66's 445 — a 1.1% lead for the Mobile Athlon 64 3000+.

Feature	Mobile Athlon 64 3000+	Xeon 2.66
Cores / Threads	1 / 1	1 / 1
Boost Clock	2 GHz	2.66 GHz+33%
L3 Cache	—	0 kB
L2 Cache	512K	512 kB
Process	—	130 nm
Architecture	Oakville (2003−2004)	Prestonia (2002)
PassMark	450+1%	445

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Memory & Platform

The Mobile Athlon 64 3000+ uses the 754 socket (PCIe 1.1), while the Xeon 2.66 uses PGA604 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Mobile Athlon 64 3000+	Xeon 2.66
Socket	754	PGA604
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	400	—
Max RAM Capacity	2	—
RAM Channels	1	—
ECC Support	No	—
PCIe Lanes	0	—

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Advanced Features

Virtualization: false (Mobile Athlon 64 3000+) / not specified (Xeon 2.66). Direct competitor: Mobile Athlon 64 3000+ rivals Pentium M 735.