Athlon MP 2800+ vs Mobile Pentium 4 2.66

Athlon MP 2800+ vs Mobile Pentium 4 2.66 Performance Spectrum

Athlon MP 2800+

1 / 1

380

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Mobile Pentium 4 2.66

1 / 2

395

+3.9%

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 MP 2800+ 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 MP 2800+ 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 MP 2800+

2003

Why buy it

✅Draws 60W instead of 66W, a 6W reduction.

Trade-offs

❌Lower PassMark (380 vs 395).
❌Launch MSRP is still $275 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

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Mobile Pentium 4 2.66 better than Athlon MP 2800+?

Yes. Mobile Pentium 4 2.66 is the better all-around CPU here. It gives you a 0.2% average FPS lead across 50 shared CPU game tests in our data, 3.9% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Mobile Pentium 4 2.66 is the better pick. According to our tests, it delivers 0.2% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Mobile Pentium 4 2.66 is the stronger fit. You are getting 3.9% better PassMark, backed by 1 cores and 2 threads.

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

Mobile Pentium 4 2.66 is still the much better call for a fresh build. Mobile Pentium 4 2.66 comes in at an unclear MSRP at unclear MSRP versus $275 MSRP, and it still gives you a 0.2% average FPS lead across 50 shared CPU game tests in our data. Athlon MP 2800+ only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2003 platform. Even with 100.0% better value on paper (1.4 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on that older platform.

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 more multi-core headroom with 1 cores / 2 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon MP 2800+ vs Mobile Pentium 4 2.66 Technical Specifications

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

Athlon MP 2800+

The Athlon MP 2800+ is manufactured by AMD. It was released in 6 May 2003 (22 years ago). It is based on the K7 (2000−2004) architecture. It features 1 cores and 1 threads. Max frequency: 2.13 GHz. L2 cache: 512 kB. Built on 130 nm process technology. Thermal design power (TDP): 60 Watt. Passmark benchmark score: 380 points. Launch price was $275.

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 MP 2800+ packs 1 cores / 1 threads, matching the Mobile Pentium 4 2.66's 1 cores. Boost clocks reach 2.13 GHz on the Athlon MP 2800+ versus 2.67 GHz on the Mobile Pentium 4 2.66 — a 22.5% clock advantage for the Mobile Pentium 4 2.66. The Athlon MP 2800+ uses the K7 (2000−2004) architecture (130 nm), while the Mobile Pentium 4 2.66 uses Northwood (2002−2004) (130 nm). In PassMark, the Athlon MP 2800+ scores 380 against the Mobile Pentium 4 2.66's 395 — a 3.9% lead for the Mobile Pentium 4 2.66.

Feature	Athlon MP 2800+	Mobile Pentium 4 2.66
Cores / Threads	1 / 1	1 / 2
Boost Clock	2.13 GHz	2.67 GHz+25%
L3 Cache	—	0 kB
L2 Cache	512 kB	512 kB
Process	130 nm	130 nm
Architecture	K7 (2000−2004)	Northwood (2002−2004)
PassMark	380	395+4%
Geekbench 6 Single	—	800
Geekbench 6 Multi	—	800

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Memory & Platform

Maximum memory speed reaches DDR-266 on the Athlon MP 2800+ versus DDR2 on the Mobile Pentium 4 2.66 — the Mobile Pentium 4 2.66 supports -100.8% 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 MP 2800+) and 852PM,855PM (Mobile Pentium 4 2.66).

Feature	Athlon MP 2800+	Mobile Pentium 4 2.66
Socket	—	PGA478
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR-266	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 MP 2800+) / None (Mobile Pentium 4 2.66). Primary use case: Mobile Pentium 4 2.66 targets Legacy Laptop.