Atom N450 vs Atom Z540

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 N450 vs Atom Z540 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 N450 vs Atom Z540: Pros, Cons & Final Verdict

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

Atom N450

2009

Why buy it

✅Integrated graphics onboard with Intel GMA 3150, while Atom Z540 needs a discrete GPU.

Trade-offs

❌21233.3% higher power demand at 512W vs 2.4W.

Atom Z540

2008

Why buy it

✅Draws 2W instead of 512W, a 510W reduction.

Trade-offs

❌Lower PassMark (305 vs 325).
❌No integrated graphics, while Atom N450 can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Atom N450 better than Atom Z540?

Yes. Atom N450 is the better all-around CPU here. It gives you 6.6% 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, Atom N450 has the edge because it leads the single-thread side of this matchup with 2285.7% higher max boost clock.

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

For streaming, content creation, and heavier multitasking, Atom N450 is the stronger fit. You are getting 6.6% better PassMark, backed by 1 cores and 2 threads.

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

Atom N450 still makes the most sense overall. Atom N450 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 6.6% higher PassMark.

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

Atom N450 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 / 2 threads instead of 1/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Atom N450 vs Atom Z540 Technical Specifications

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

Atom N450

The Atom N450 is manufactured by Intel. It was released in 21 December 2009 (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: 512 kB (per core). Built on 45 nm process technology. Socket: FCBGA559. Thermal design power (TDP): 5.5 Watt. Memory support: DDR2. Passmark benchmark score: 325 points. Launch price was $64.

Atom Z540

The Atom Z540 is manufactured by Intel. It was released in 2 April 2008 (17 years ago). It is based on the Silverthorne (2008−2010) architecture. It features 1 cores and 2 threads. Base frequency is 1.86 GHz, with boost up to 0.07 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 45 nm process technology. Socket: PBGA441. Thermal design power (TDP): 2.4 Watt. Passmark benchmark score: 305 points. Launch price was $160.

⚡

Processing Power

Both the Atom N450 and Atom Z540 share an identical 1-core/2-thread configuration. Boost clocks reach 1.67 GHz on the Atom N450 versus 0.07 GHz on the Atom Z540 — a 183.9% clock advantage for the Atom N450 (base: 1.66 GHz vs 1.86 GHz). The Atom N450 uses the Pinetrail (2009−2011) architecture (45 nm), while the Atom Z540 uses Silverthorne (2008−2010) (45 nm). In PassMark, the Atom N450 scores 325 against the Atom Z540's 305 — a 6.3% lead for the Atom N450. Both processors carry 0 kB of L3 cache.

Feature	Atom N450	Atom Z540
Cores / Threads	1 / 2	1 / 2
Boost Clock	1.67 GHz+2286%	0.07 GHz
Base Clock	1.66 GHz	1.86 GHz+12%
L3 Cache	0 kB	0 kB
L2 Cache	512 kB (per core)	512 kB
Process	45 nm	45 nm
Architecture	Pinetrail (2009−2011)	Silverthorne (2008−2010)
PassMark	325+7%	305

🧠

Memory & Platform

The Atom N450 uses the FCBGA559 socket (PCIe 2.0), while the Atom Z540 uses PBGA441 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-667 on the Atom N450 versus DDR2-533 on the Atom Z540 — the Atom N450 supports 25.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 2 GB of RAM. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: Intel NM10 (Atom N450) and Intel US15W (Atom Z540).

Feature	Atom N450	Atom Z540
Socket	FCBGA559	PBGA441
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR2-667+25%	DDR2-533
Max RAM Capacity	2 GB	2 GB
RAM Channels	1	1
ECC Support	No	No
PCIe Lanes	0	0