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Mobile Sempron SI-40 vs Pentium M 1.40

CPUCPUGPUGPU
AMD

Mobile Sempron SI-40

1 Cores1 Thrd512 WWMax: 2 GHz2008
Similar parts
·······
Buy on Amazon
VS
Intel

Pentium M 1.40

1 Cores1 Thrd24 WWMax: 1.4 GHz2003
Similar parts
·······
Buy on Amazon

Mobile Sempron SI-40 vs Pentium M 1.40 Performance Spectrum

Mobile Sempron SI-40
1 / 1
322
0.0%
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brand logoRyzen Threadripper PRO 3955WX
brand logoRyzen Threadripper PRO 7955WX
brand logoRyzen Threadripper 3990X
brand logoRyzen Threadripper 7970X
Pentium M 1.40
1 / 1
345
+7.1%
brand logoAtom Z510
brand logoPentium III 1400S
brand logoAtom N270
brand logoCeleron 2.20
brand logoCore Ultra 7 268V
brand logoXeon W-3335
brand logoXeon w7-3545
brand logoXeon w9-3575X

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.

Mobile Sempron SI-40 vs Pentium M 1.40 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
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Counter-Strike 2

Counter-Strike 2

1080P
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
League of Legends

League of Legends

1080P
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Valorant

Valorant

1080P
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Among Us

Among Us

1080P
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Civilization VI

Civilization VI

1080P
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Dota 2

Dota 2

1080P
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Elden Ring

Elden Ring

1080P
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Genshin Impact

Genshin Impact

1080P
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Grand Theft Auto V

Grand Theft Auto V

1080P
Mobile Sempron SI-40
low8 FPS
medium8 FPS
high8 FPS
ultra8 FPS
1080P
Pentium M 1.40
low9 FPS
medium9 FPS
high9 FPS
ultra9 FPS
Check FPS with Custom Builds

Mobile Sempron SI-40 vs Pentium M 1.40: Pros, Cons & Final Verdict

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

Mobile Sempron SI-40

2008

Why buy it

    Trade-offs

    • ❌Worse for gaming: lower average FPS than Pentium M 1.40 across 20 shared CPU benchmark tests.
    • ❌Lower PassMark (322 vs 345).
    • ❌2033.3% higher power demand at 512W vs 24W.

    Pentium M 1.40

    2003

    Why buy it

    • ✅Better for gaming: +12.5% higher average FPS across 20 shared CPU benchmark tests.
    • ✅Draws 24W instead of 512W, a 488W reduction.

    Trade-offs

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

    Quick Answers

    So, is Pentium M 1.40 better than Mobile Sempron SI-40?
    Yes. Pentium M 1.40 is the better all-around CPU here. It gives you a 12.5% average FPS lead across 20 shared CPU game tests in our data and 7.1% better PassMark, which is enough to make it the stronger overall pick.
    Which one is better for gaming?
    If gaming is the priority, Pentium M 1.40 is the better pick. According to our tests, it delivers 12.5% more average FPS across 20 shared CPU game tests.
    Which one is better for streaming, content creation, and heavy multitasking?
    For streaming, content creation, and heavier multitasking, Pentium M 1.40 is the stronger fit. You are getting 7.1% better PassMark, backed by 1 cores and 1 threads.
    Which one is the smarter buy today, not just the cheaper CPU?
    Pentium M 1.40 still makes the most sense overall. Pentium M 1.40 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 12.5% average FPS lead across 20 shared CPU game tests in our data.
    Which one is more future-proof for 2026 and beyond?
    Mobile Sempron SI-40 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2008 vs 2003). That makes it the safer long-term bet.

    Mobile Sempron SI-40 vs Pentium M 1.40 Technical Specifications

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

    AMD

    Mobile Sempron SI-40

    The Mobile Sempron SI-40 is manufactured by AMD. It was released in 4 July 2008 (17 years ago). It is based on the Sable (2008−2009) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L2 cache: 512 kB. Built on 65 nm process technology. Socket: S1g2. Thermal design power (TDP): 512 kB. Passmark benchmark score: 322 points. Launch price was $69.

    Intel

    Pentium M 1.40

    The Pentium M 1.40 is manufactured by Intel. It was released in 2007-01-01. It is based on the Banias (2003) architecture. It features 1 cores and 1 threads. Max frequency: 1.4 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 130 nm process technology. Socket: PGA478. Thermal design power (TDP): 24 Watt. Memory support: DDR1, DDR2. Passmark benchmark score: 345 points. Launch price was $69.

    ⚡

    Processing Power

    Both the Mobile Sempron SI-40 and Pentium M 1.40 share an identical 1-core/1-thread configuration. Boost clocks reach 2 GHz on the Mobile Sempron SI-40 versus 1.4 GHz on the Pentium M 1.40 — a 35.3% clock advantage for the Mobile Sempron SI-40. The Mobile Sempron SI-40 uses the Sable (2008−2009) architecture (65 nm), while the Pentium M 1.40 uses Banias (2003) (130 nm). In PassMark, the Mobile Sempron SI-40 scores 322 against the Pentium M 1.40's 345 — a 6.9% lead for the Pentium M 1.40.

    FeatureMobile Sempron SI-40Pentium M 1.40
    Cores / Threads
    1 / 1
    1 / 1
    Boost Clock
    2 GHz+43%
    1.4 GHz
    L3 Cache
    —
    0 kB
    L2 Cache
    512 kB
    1 MB+100%
    Process
    65 nm-50%
    130 nm
    Architecture
    Sable (2008−2009)
    Banias (2003)
    PassMark
    322
    345+7%
    🧠

    Memory & Platform

    The Mobile Sempron SI-40 uses the S1g2 socket (PCIe 2.0), while the Pentium M 1.40 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.

    FeatureMobile Sempron SI-40Pentium M 1.40
    Socket
    S1g2
    PGA478
    PCIe Generation
    PCIe 2.0+82%
    PCIe 1.1