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Pentium 4 2.66 vs Sempron 3100+

CPUCPUGPUGPU
Intel

Pentium 4 2.66

1 Cores1 Thrd110 WWMax: 2.66 GHz2002
Similar parts
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VS
AMD

Sempron 3100+

1 Cores1 Thrd62 WWMax: 1.8 GHz2001
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Pentium 4 2.66 vs Sempron 3100+ Performance Spectrum

Pentium 4 2.66
1 / 1
378
+1.6%
brand logoPentium III 1266S
brand logoAtom 230
brand logoAtom N280
brand logoAtom N435
brand logoCore i5-12500
brand logoXeon W-3335
brand logoXeon w7-3545
brand logoXeon w9-3575X
Sempron 3100+
1 / 1
372
0.0%
brand logoAthlon XP 1600+
brand logoAthlon XP 1900+
brand logoAthlon XP 2200+
brand logoAthlon 64 2000+
brand logoRyzen 5 PRO 5655G
brand logoRyzen Threadripper PRO 3955WX
brand logoRyzen Threadripper PRO 7955WX
brand logoRyzen 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 3100+ 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.

Path of Exile 2

Path of Exile 2

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Counter-Strike 2

Counter-Strike 2

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
League of Legends

League of Legends

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Valorant

Valorant

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Among Us

Among Us

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Apex Legends

Apex Legends

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
ARC Raiders

ARC Raiders

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Baldur's Gate 3

Baldur's Gate 3

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Call of Duty: Black Ops 6

Call of Duty: Black Ops 6

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Call of Duty: Warzone

Call of Duty: Warzone

1080P
Pentium 4 2.66
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
1080P
Sempron 3100+
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Check FPS with Custom Builds

Pentium 4 2.66 vs Sempron 3100+: 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

    • ❌Lower PassMark per dollar, at 1.3 vs 5.7 PassMark/$ ($300 MSRP vs $65 MSRP).
    • ❌77.4% higher power demand at 110W vs 62W.
    • ❌No boxed cooler included, unlike Sempron 3100+.

    Sempron 3100+

    2001

    Why buy it

    • ✅Costs $235 less on MSRP ($65 MSRP vs $300 MSRP).
    • ✅Delivers 354.2% more PassMark for each dollar spent, at 5.7 vs 1.3 PassMark/$ ($65 MSRP vs $300 MSRP).
    • ✅Draws 62W instead of 110W, a 48W reduction.
    • ✅Includes a boxed cooler (true), unlike Pentium 4 2.66.

    Trade-offs

    • ❌Lower PassMark (372 vs 378).

    Quick Answers

    So, is Pentium 4 2.66 better than Sempron 3100+?
    Yes. Pentium 4 2.66 is the better all-around CPU here. It gives you 1.6% 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, Pentium 4 2.66 has the edge because it leads the single-thread side of this matchup with 47.8% higher max boost clock.
    Which one is better for streaming, content creation, and heavy multitasking?
    For streaming, content creation, and heavier multitasking, Pentium 4 2.66 is the stronger fit. You are getting 1.6% better PassMark, backed by 1 cores and 1 threads.
    Which one is the smarter buy today, not just the cheaper CPU?
    Pentium 4 2.66 is still the much better call for a fresh build. Pentium 4 2.66 comes in 361.5% more expensive on MSRP at $300 MSRP versus $65 MSRP, and it still gives you 1.6% higher PassMark. Sempron 3100+ only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2001 platform. Even with 354.2% better value on paper (5.7 vs 1.3 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on 754.
    Which one is more future-proof for 2026 and beyond?
    Pentium 4 2.66 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2002 vs 2001) 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 3100+ Technical Specifications

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

    Intel

    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.

    AMD

    Sempron 3100+

    The Sempron 3100+ is manufactured by AMD. It was released in Janeiro 2001 (24 years ago). It is based on the Palermo (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 1.8 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 130 nm process technology. Socket: 754. Thermal design power (TDP): 62 Watt. Passmark benchmark score: 372 points. Launch price was $60.

    ⚡

    Processing Power

    Both the Pentium 4 2.66 and Sempron 3100+ share an identical 1-core/1-thread configuration. Boost clocks reach 2.66 GHz on the Pentium 4 2.66 versus 1.8 GHz on the Sempron 3100+ — a 38.6% clock advantage for the Pentium 4 2.66. The Pentium 4 2.66 uses the NetBurst (2000−2006) architecture (130 nm), while the Sempron 3100+ uses Palermo (2001−2005) (130 nm). In PassMark, the Pentium 4 2.66 scores 378 against the Sempron 3100+'s 372 — a 1.6% lead for the Pentium 4 2.66. Both processors carry 0 kB of L3 cache.

    FeaturePentium 4 2.66Sempron 3100+
    Cores / Threads
    1 / 1
    1 / 1
    Boost Clock
    2.66 GHz+48%
    1.8 GHz
    L3 Cache
    0 kB
    0 kB
    L2 Cache
    512 kB+100%
    256 kB
    Process
    130 nm
    130 nm
    Architecture
    NetBurst (2000−2006)
    Palermo (2001−2005)
    PassMark
    378+2%
    372
    🧠

    Memory & Platform

    The Pentium 4 2.66 uses the PGA478 socket (PCIe 1.1), while the Sempron 3100+ uses 754 (PCIe 2.0) — making them incompatible on the same motherboard.

    FeaturePentium 4 2.66Sempron 3100+
    Socket
    PGA478
    754
    PCIe Generation
    PCIe 1.1
    PCIe 2.0+82%
    Max RAM Speed
    —
    DDR 400 MHz
    Max RAM Capacity
    —
    3 GB
    RAM Channels
    —
    1
    ECC Support
    —
    No
    PCIe Lanes
    —
    0
    🔧

    Advanced Features

    Virtualization: not specified (Pentium 4 2.66) / false (Sempron 3100+). Primary use case: Sempron 3100+ targets Budget.

    FeaturePentium 4 2.66Sempron 3100+
    Integrated GPU
    —
    No
    Unlocked
    —
    No
    AVX-512
    —
    No
    Virtualization
    —
    false
    Target Use
    —
    Budget
    💰

    Value Analysis

    At launch, the Pentium 4 2.66 was priced at $300, while the Sempron 3100+ came in at $65. On launch pricing ($300 vs $65), Sempron 3100+ was $235 cheaper. In terms of value on MSRP (PassMark points per dollar), the Pentium 4 2.66 delivers 1.3 pts/$ vs 5.7 pts/$ for the Sempron 3100+ — making the Sempron 3100+ the 127.8% better value option.

    FeaturePentium 4 2.66Sempron 3100+
    MSRP
    $300
    $65-78%
    Performance per Dollar
    1.3
    5.7+338%
    Release Date
    2002
    2001
    Search Pentium 4 2.66 on AmazonSearch Sempron 3100+ on Amazon

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