Atom N455 vs Sempron 3100+

Atom N455 vs Sempron 3100+ Performance Spectrum

Atom N455

1 / 2

345

0.0%

372

+7.8%

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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 N455 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 N455 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 N455

2010

Why buy it

✅Integrated graphics onboard with Intel GMA 3150, while Sempron 3100+ needs a discrete GPU.

Trade-offs

❌Lower PassMark (345 vs 372).
❌725.8% higher power demand at 512W vs 62W.
❌No boxed cooler included, unlike Sempron 3100+.

Sempron 3100+

2001

Why buy it

✅Draws 62W instead of 512W, a 450W reduction.
✅Includes a boxed cooler (true), unlike Atom N455.

Trade-offs

❌Launch MSRP is still $65 MSRP, while Atom N455 mostly shows up through inconsistent older-market listings.
❌No integrated graphics, while Atom N455 can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Sempron 3100+ better than Atom N455?

Yes. Sempron 3100+ is the better all-around CPU here. It gives you a 0.2% average FPS lead across 50 shared CPU game tests in our data and 7.8% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Sempron 3100+ is the better pick. According to our tests, it delivers 0.2% 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 3100+ is the stronger fit. You are getting 7.8% better PassMark, backed by 1 cores and 1 threads.

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

Sempron 3100+ is the better buy right now. Sempron 3100+ comes in at an unclear MSRP at $65 MSRP versus unclear MSRP, and it still gives you a 0.2% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (5.7 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Atom N455 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2001). That makes it the safer long-term bet.

Atom N455 vs Sempron 3100+ Technical Specifications

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

Atom N455

The Atom N455 is manufactured by Intel. It was released in 1 June 2010 (15 years ago). It is based on the Pinetrail (2009−2011) architecture. It features 1 cores and 2 threads. Base frequency is 1.66 GHz, with boost up to 1.67 GHz. L3 cache: 0 kB. L2 cache: 512K (per core). Built on 45 nm process technology. Socket: FCBGA559. Thermal design power (TDP): 6.5 Watt. Memory support: DDR3. Passmark benchmark score: 345 points. Launch price was $64.

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 N455 packs 1 cores / 2 threads, matching the Sempron 3100+'s 1 cores. Boost clocks reach 1.67 GHz on the Atom N455 versus 1.8 GHz on the Sempron 3100+ — a 7.5% clock advantage for the Sempron 3100+. The Atom N455 uses the Pinetrail (2009−2011) architecture (45 nm), while the Sempron 3100+ uses Palermo (2001−2005) (130 nm). In PassMark, the Atom N455 scores 345 against the Sempron 3100+'s 372 — a 7.5% lead for the Sempron 3100+. Both processors carry 0 kB of L3 cache.

Feature	Atom N455	Sempron 3100+
Cores / Threads	1 / 2	1 / 1
Boost Clock	1.67 GHz	1.8 GHz+8%
Base Clock	1.66 GHz	—
L3 Cache	0 kB	0 kB
L2 Cache	512K (per core)+100%	256 kB
Process	45 nm-65%	130 nm
Architecture	Pinetrail (2009−2011)	Palermo (2001−2005)
PassMark	345	372+8%

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Memory & Platform

The Atom N455 uses the FCBGA559 socket (PCIe 2.0), while the Sempron 3100+ uses 754 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-667 on the Atom N455 versus DDR 400 MHz on the Sempron 3100+ — the Atom N455 supports 66.8% 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 NM10 (Atom N455) and nForce3,VIA K8T800 (Sempron 3100+).

Feature	Atom N455	Sempron 3100+
Socket	FCBGA559	754
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-667+67%	DDR 400 MHz
Max RAM Capacity	2 GB	3 GB+50%
RAM Channels	1	1
ECC Support	No	No
PCIe Lanes	0	0

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Advanced Features

Virtualization: not specified (Atom N455) / false (Sempron 3100+). The Atom N455 includes integrated graphics (Intel GMA 3150), while the Sempron 3100+ requires a dedicated GPU. Primary use case: Sempron 3100+ targets Budget.