Mobile Pentium 4 2.66 vs Pentium 4 2.80

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 Pentium 4 2.66 vs Pentium 4 2.80 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 Pentium 4 2.66 vs Pentium 4 2.80: Pros, Cons & Final Verdict

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

Mobile Pentium 4 2.66

2003

Why buy it

✅Draws 66W instead of 110W, a 44W reduction.

Trade-offs

❌Lower PassMark (395 vs 408).

Pentium 4 2.80

2002

Why buy it

Trade-offs

❌Launch MSRP is still $327 MSRP, while Mobile Pentium 4 2.66 mostly shows up through inconsistent older-market listings.
❌66.7% higher power demand at 110W vs 66W.

Quick Answers

So, is Pentium 4 2.80 better than Mobile Pentium 4 2.66?

Yes. Pentium 4 2.80 is the better all-around CPU here. It gives you 3.3% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Pentium 4 2.80 has the edge because it leads the single-thread side of this matchup with 4.5% higher max boost clock.

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

For streaming, content creation, and heavier multitasking, Pentium 4 2.80 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?

Pentium 4 2.80 is the better buy right now. Pentium 4 2.80 comes in at an unclear MSRP at $327 MSRP versus unclear MSRP, and it still gives you 3.3% higher PassMark. It is also 100.0% better value on MSRP (1.2 vs 0.0 PassMark/$), 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 2002). That makes it the safer long-term bet.

Mobile Pentium 4 2.66 vs Pentium 4 2.80 Technical Specifications

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

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.

Pentium 4 2.80

The Pentium 4 2.80 is manufactured by Intel. It was released in 2007-01-01. It is based on the NetBurst (2000−2006) architecture. It features 1 cores and 1 threads. Max frequency: 2.79 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA478. Thermal design power (TDP): 110 Watt. Memory support: DDR1, DDR2. Passmark benchmark score: 408 points. Launch price was $69.

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Processing Power

The Mobile Pentium 4 2.66 packs 1 cores / 2 threads, matching the Pentium 4 2.80's 1 cores. Boost clocks reach 2.67 GHz on the Mobile Pentium 4 2.66 versus 2.79 GHz on the Pentium 4 2.80 — a 4.4% clock advantage for the Pentium 4 2.80. The Mobile Pentium 4 2.66 uses the Northwood (2002−2004) architecture (130 nm), while the Pentium 4 2.80 uses NetBurst (2000−2006) (130 nm). In PassMark, the Mobile Pentium 4 2.66 scores 395 against the Pentium 4 2.80's 408 — a 3.2% lead for the Pentium 4 2.80. Both processors carry 0 kB of L3 cache.

Feature	Mobile Pentium 4 2.66	Pentium 4 2.80
Cores / Threads	1 / 2	1 / 1
Boost Clock	2.67 GHz	2.79 GHz+4%
L3 Cache	0 kB	0 kB
L2 Cache	512 kB	512 kB
Process	130 nm	130 nm
Architecture	Northwood (2002−2004)	NetBurst (2000−2006)
PassMark	395	408+3%
Geekbench 6 Single	800	—
Geekbench 6 Multi	800	—

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Memory & Platform

Both processors use the PGA478 socket with PCIe 1.1.

Feature	Mobile Pentium 4 2.66	Pentium 4 2.80
Socket	PGA478	PGA478
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR2	—
Max RAM Capacity	4 GB	—
RAM Channels	1	—
ECC Support	No	—
PCIe Lanes	0	—

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Advanced Features

Virtualization: None (Mobile Pentium 4 2.66) / not specified (Pentium 4 2.80). Primary use case: Mobile Pentium 4 2.66 targets Legacy Laptop.