Celeron 2.70 vs Mobile Pentium 4 2.66

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.

Celeron 2.70 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.

Celeron 2.70 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.

Celeron 2.70

2003

Why buy it

Trade-offs

❌Launch MSRP is still $49 MSRP, while Mobile Pentium 4 2.66 mostly shows up through inconsistent older-market listings.

Mobile Pentium 4 2.66

2003

Why buy it

✅Draws 66W instead of 73W, a 7W reduction.

Trade-offs

❌Lower PassMark (395 vs 408).

Quick Answers

So, is Celeron 2.70 better than Mobile Pentium 4 2.66?

Yes. Celeron 2.70 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, Celeron 2.70 has the edge because it leads the single-thread side of this matchup with 1.1% higher max boost clock.

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

For streaming, content creation, and heavier multitasking, Celeron 2.70 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?

Celeron 2.70 is the better buy right now. Celeron 2.70 comes in at an unclear MSRP at $49 MSRP versus unclear MSRP, and it still gives you 3.3% higher PassMark. It is also 100.0% better value on MSRP (8.3 vs 0.0 PassMark/$), 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 Pentium 4 2.66 is the safer long-term CPU choice because it gives you more room to grow and a better platform outlook.

Celeron 2.70 vs Mobile Pentium 4 2.66 Technical Specifications

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

Celeron 2.70

The Celeron 2.70 is manufactured by Intel. It was released in 2007-01-01. It is based on the Northwood (2002−2004) architecture. It features 1 cores and 1 threads. Max frequency: 2.7 GHz. L3 cache: 0 kB. L2 cache: 128 kB. Built on 130 nm process technology. Socket: PGA478. Thermal design power (TDP): 73 Watt. Memory support: DDR1, DDR2. Passmark benchmark score: 408 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 Celeron 2.70 packs 1 cores / 1 threads, matching the Mobile Pentium 4 2.66's 1 cores. Boost clocks reach 2.7 GHz on the Celeron 2.70 versus 2.67 GHz on the Mobile Pentium 4 2.66 — a 1.1% clock advantage for the Celeron 2.70. Both are built on the Northwood (2002−2004) architecture using a 130 nm process. In PassMark, the Celeron 2.70 scores 408 against the Mobile Pentium 4 2.66's 395 — a 3.2% lead for the Celeron 2.70. Both processors carry 0 kB of L3 cache.

Feature	Celeron 2.70	Mobile Pentium 4 2.66
Cores / Threads	1 / 1	1 / 2
Boost Clock	2.7 GHz+1%	2.67 GHz
L3 Cache	0 kB	0 kB
L2 Cache	128 kB	512 kB+300%
Process	130 nm	130 nm
Architecture	Northwood (2002−2004)	Northwood (2002−2004)
PassMark	408+3%	395
Geekbench 6 Single	—	800
Geekbench 6 Multi	—	800

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Memory & Platform

Both processors use the PGA478 socket with PCIe 1.1. Maximum memory speed reaches DDR1-400 on the Celeron 2.70 versus DDR2 on the Mobile Pentium 4 2.66 — the Celeron 2.70 supports 19900% 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: 845,848,865,875 (Celeron 2.70) and 852PM,855PM (Mobile Pentium 4 2.66).

Feature	Celeron 2.70	Mobile Pentium 4 2.66
Socket	PGA478	PGA478
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR1-400+19900%	DDR2
Max RAM Capacity	4 GB	4 GB
RAM Channels	1	1
ECC Support	No	No
PCIe Lanes	0	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: No (Celeron 2.70) vs None (Mobile Pentium 4 2.66). Primary use case: Celeron 2.70 targets Budget, Mobile Pentium 4 2.66 targets Legacy Laptop. Direct competitor: Celeron 2.70 rivals Pentium 4 2.80.