Pentium 4 2.66 vs Sempron LE-1150

Pentium 4 2.66 vs Sempron LE-1150 Performance Spectrum

Pentium 4 2.66

1 / 1

378

0.0%

390

+3.2%

Ryzen Threadripper PRO 3955WX

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Ryzen Threadripper 3990X

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.

Pentium 4 2.66 vs Sempron LE-1150 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.

Pentium 4 2.66 vs Sempron LE-1150: Pros, Cons & Final Verdict

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

Pentium 4 2.66

2002

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Sempron LE-1150 across 50 shared CPU benchmark tests.
❌Lower PassMark (378 vs 390).
❌Launch MSRP is still $300 MSRP, while Sempron LE-1150 mostly shows up through inconsistent older-market listings.
❌144.4% higher power demand at 110W vs 45W.

Sempron LE-1150

2007

Why buy it

✅Better for gaming: +10.9% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 45W instead of 110W, a 65W reduction.

Trade-offs

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

Quick Answers

So, is Sempron LE-1150 better than Pentium 4 2.66?

Yes. Sempron LE-1150 is the better all-around CPU here. It gives you a 10.9% average FPS lead across 50 shared CPU game tests in our data, 3.2% 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, Sempron LE-1150 is the better pick. According to our tests, it delivers 10.9% 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, Sempron LE-1150 is the stronger fit. You are getting 3.2% better PassMark, backed by 1 cores and 1 threads.

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

Sempron LE-1150 is still the much better call for a fresh build. Sempron LE-1150 comes in at an unclear MSRP at unclear MSRP versus $300 MSRP, and it still gives you a 10.9% average FPS lead across 50 shared CPU game tests in our data. Pentium 4 2.66 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2002 platform. Even with 100.0% better value on paper (1.3 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on PGA478.

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

Sempron LE-1150 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2007 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.

Pentium 4 2.66 vs Sempron LE-1150 Technical Specifications

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

Pentium 4 2.66

The Pentium 4 2.66 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: 2.66 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: 378 points. Launch price was $69.

Sempron LE-1150

The Sempron LE-1150 is manufactured by AMD. It was released in 2007-01-01. It is based on the Sparta (2007) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 65 nm process technology. Socket: AM2. Thermal design power (TDP): 45 Watt. Passmark benchmark score: 390 points. Launch price was $69.

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Processing Power

Both the Pentium 4 2.66 and Sempron LE-1150 share an identical 1-core/1-thread configuration. Boost clocks reach 2.66 GHz on the Pentium 4 2.66 versus 2 GHz on the Sempron LE-1150 — a 28.3% clock advantage for the Pentium 4 2.66. The Pentium 4 2.66 uses the NetBurst (2000−2006) architecture (130 nm), while the Sempron LE-1150 uses Sparta (2007) (65 nm). In PassMark, the Pentium 4 2.66 scores 378 against the Sempron LE-1150's 390 — a 3.1% lead for the Sempron LE-1150. Both processors carry 0 kB of L3 cache.

Feature	Pentium 4 2.66	Sempron LE-1150
Cores / Threads	1 / 1	1 / 1
Boost Clock	2.66 GHz+33%	2 GHz
L3 Cache	0 kB	0 kB
L2 Cache	512 kB+100%	256 kB
Process	130 nm	65 nm-50%
Architecture	NetBurst (2000−2006)	Sparta (2007)
PassMark	378	390+3%

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Memory & Platform

The Pentium 4 2.66 uses the PGA478 socket (PCIe 1.1), while the Sempron LE-1150 uses AM2 (PCIe 2.0) — making them incompatible on the same motherboard.