Athlon 64 2000+ vs Mobile Sempron SI-42

AMD

Athlon 64 2000+

1 Cores1 Thrd8 WWMax: 1 GHz2008
Similar parts
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VS
AMD

Mobile Sempron SI-42

1 Cores1 Thrd512 WWMax: 2.1 GHz2009
Similar parts
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Athlon 64 2000+ vs Mobile Sempron SI-42 Performance Spectrum

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 64 2000+ vs Mobile Sempron SI-42 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 64 2000+ vs Mobile Sempron SI-42: Pros, Cons & Final Verdict

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

Athlon 64 2000+

2008

Why buy it

  • Draws 8W instead of 512W, a 504W reduction.
  • 100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

  • Lower PassMark (330 vs 332).
  • Launch MSRP is still $100 MSRP, while Mobile Sempron SI-42 mostly shows up through inconsistent older-market listings.

Mobile Sempron SI-42

2009

Why buy it

    Trade-offs

    • 6300% higher power demand at 512W vs 8W.

    Quick Answers

    So, is Mobile Sempron SI-42 better than Athlon 64 2000+?
    Yes. Mobile Sempron SI-42 is the better all-around CPU here. It gives you 0.6% 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, Mobile Sempron SI-42 has the edge because it leads the single-thread side of this matchup with 110% higher max boost clock.
    Which one is better for streaming, content creation, and heavy multitasking?
    For streaming, content creation, and heavier multitasking, Mobile Sempron SI-42 is the stronger fit. You are getting 0.6% better PassMark, backed by 1 cores and 1 threads.
    Which one is the smarter buy today, not just the cheaper CPU?
    Mobile Sempron SI-42 is still the much better call for a fresh build. Mobile Sempron SI-42 comes in at an unclear MSRP at unclear MSRP versus $100 MSRP, and it still gives you 0.6% higher PassMark. Athlon 64 2000+ only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2008 platform. Even with 100.0% better value on paper (3.3 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on AM2.
    Which one is more future-proof for 2026 and beyond?
    Mobile Sempron SI-42 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2008) 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.

    Athlon 64 2000+ vs Mobile Sempron SI-42 Technical Specifications

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

    AMD

    Athlon 64 2000+

    The Athlon 64 2000+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Lima (2008−2009) architecture. It features 1 cores and 1 threads. Max frequency: 1 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 65 nm process technology. Socket: AM2. Thermal design power (TDP): 8 Watt. Passmark benchmark score: 330 points. Launch price was $149.

    AMD

    Mobile Sempron SI-42

    The Mobile Sempron SI-42 is manufactured by AMD. It was released in 1 September 2009 (16 years ago). It is based on the Sable (2008−2009) architecture. It features 1 cores and 1 threads. Max frequency: 2.1 GHz. L2 cache: 512 kB. Built on 65 nm process technology. Socket: S1g2. Thermal design power (TDP): 512 kB. Passmark benchmark score: 332 points. Launch price was $69.

    Processing Power

    Both the Athlon 64 2000+ and Mobile Sempron SI-42 share an identical 1-core/1-thread configuration. Boost clocks reach 1 GHz on the Athlon 64 2000+ versus 2.1 GHz on the Mobile Sempron SI-42 — a 71% clock advantage for the Mobile Sempron SI-42. The Athlon 64 2000+ uses the Lima (2008−2009) architecture (65 nm), while the Mobile Sempron SI-42 uses Sable (2008−2009) (65 nm). In PassMark, the Athlon 64 2000+ scores 330 against the Mobile Sempron SI-42's 332 — a 0.6% lead for the Mobile Sempron SI-42.

    FeatureAthlon 64 2000+Mobile Sempron SI-42
    Cores / Threads
    1 / 1
    1 / 1
    Boost Clock
    1 GHz
    2.1 GHz+110%
    L3 Cache
    0 kB
    L2 Cache
    512 kB
    512 kB
    Process
    65 nm
    65 nm
    Architecture
    Lima (2008−2009)
    Sable (2008−2009)
    PassMark
    330
    332
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    Memory & Platform

    The Athlon 64 2000+ uses the AM2 socket (PCIe 2.0), while the Mobile Sempron SI-42 uses S1g2 (PCIe 2.0) — making them incompatible on the same motherboard.

    FeatureAthlon 64 2000+Mobile Sempron SI-42
    Socket
    AM2
    S1g2
    PCIe Generation
    PCIe 2.0
    PCIe 2.0
    Max RAM Speed
    DDR2-400
    Max RAM Capacity
    16 GB
    RAM Channels
    2
    ECC Support
    No
    PCIe Lanes
    16