Atom Z550 vs Sempron 3100+

Atom Z550 vs Sempron 3100+ Performance Spectrum

Atom Z550

1 / 2

375

+0.8%

372

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

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.

Atom Z550 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.

Atom Z550 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.

Atom Z550

2009

Why buy it

✅Draws 2W instead of 62W, a 60W reduction.

Trade-offs

❌No boxed cooler included, unlike Sempron 3100+.

Sempron 3100+

2001

Why buy it

✅Includes a boxed cooler (true), unlike Atom Z550.

Trade-offs

❌Lower PassMark (372 vs 375).
❌Launch MSRP is still $65 MSRP, while Atom Z550 mostly shows up through inconsistent older-market listings.
❌2483.3% higher power demand at 62W vs 2.4W.

Quick Answers

So, is Atom Z550 better than Sempron 3100+?

Yes. Atom Z550 is the better all-around CPU here. It gives you 0.8% 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, Atom Z550 has the edge because it leads the single-thread side of this matchup with 11.1% higher max boost clock.

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

For streaming, content creation, and heavier multitasking, Atom Z550 is the stronger fit. You are getting 0.8% better PassMark, backed by 1 cores and 2 threads.

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

Atom Z550 is still the much better call for a fresh build. Atom Z550 comes in at an unclear MSRP at unclear MSRP versus $65 MSRP, and it still gives you 0.8% higher PassMark. Sempron 3100+ only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2001 platform. Even with 100.0% better value on paper (5.7 vs 0.0 PassMark/$), 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?

Atom Z550 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2001) and more multi-core headroom with 1 cores / 2 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Atom Z550 vs Sempron 3100+ Technical Specifications

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

Atom Z550

The Atom Z550 is manufactured by Intel. It was released in 8 April 2009 (16 years ago). It is based on the Silverthorne (2008−2010) architecture. It features 1 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: PBGA441. Thermal design power (TDP): 2.4 Watt. Memory support: unknown. Passmark benchmark score: 375 points. Launch price was $69.

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.

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Processing Power

The Atom Z550 packs 1 cores / 2 threads, matching the Sempron 3100+'s 1 cores. Boost clocks reach 2 GHz on the Atom Z550 versus 1.8 GHz on the Sempron 3100+ — a 10.5% clock advantage for the Atom Z550. The Atom Z550 uses the Silverthorne (2008−2010) architecture (45 nm), while the Sempron 3100+ uses Palermo (2001−2005) (130 nm). In PassMark, the Atom Z550 scores 375 against the Sempron 3100+'s 372 — a 0.8% lead for the Atom Z550. Both processors carry 0 kB of L3 cache.

Feature	Atom Z550	Sempron 3100+
Cores / Threads	1 / 2	1 / 1
Boost Clock	2 GHz+11%	1.8 GHz
Base Clock	2 GHz	—
L3 Cache	0 kB	0 kB
L2 Cache	512 kB (per core)+100%	256 kB
Process	45 nm-65%	130 nm
Architecture	Silverthorne (2008−2010)	Palermo (2001−2005)
PassMark	375	372

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Memory & Platform

The Atom Z550 uses the PBGA441 socket (PCIe 2.0), while the Sempron 3100+ uses 754 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-533 on the Atom Z550 versus DDR 400 MHz on the Sempron 3100+ — the Atom Z550 supports 33.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Sempron 3100+ supports up to 3 GB of RAM compared to 2 GB — 50% more capacity for professional workloads. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: Intel US15W (Atom Z550) and nForce3,VIA K8T800 (Sempron 3100+).

Feature	Atom Z550	Sempron 3100+
Socket	PBGA441	754
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR2-533+33%	DDR 400 MHz
Max RAM Capacity	2 GB	3 GB+50%
RAM Channels	1	1
ECC Support	No	No
PCIe Lanes	0	0