Atom Z520 vs Atom Z530

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 Z520 vs Atom Z530 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 Z520 vs Atom Z530: Pros, Cons & Final Verdict

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

Atom Z520

2008

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Atom Z530 across 43 shared CPU benchmark tests.
❌Lower PassMark (215 vs 255).

Atom Z530

2008

Why buy it

✅Better for gaming: +20.0% higher average FPS across 43 shared CPU benchmark tests.

Trade-offs

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

Quick Answers

So, is Atom Z530 better than Atom Z520?

Yes. Atom Z530 is the better all-around CPU here. It gives you a 20.0% average FPS lead across 43 shared CPU game tests in our data, 18.6% 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 Z530 is the better pick. According to our tests, it delivers 20.0% more average FPS across 43 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Atom Z530 is the stronger fit. You are getting 18.6% better PassMark, backed by 1 cores and 2 threads.

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

Atom Z530 still makes the most sense overall. Atom Z530 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 20.0% average FPS lead across 43 shared CPU game tests in our data.

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

Atom Z530 makes more sense long term for 2026 and beyond. You are getting 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 Z520 vs Atom Z530 Technical Specifications

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

Atom Z520

The Atom Z520 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 1.33 GHz, with boost up to 0.03 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 45 nm process technology. Socket: PBGA441. Thermal design power (TDP): 2 Watt. Passmark benchmark score: 215 points. Launch price was $65.

Atom Z530

The Atom Z530 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 1.6 GHz, with boost up to 0.1 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 45 nm process technology. Socket: PBGA441. Thermal design power (TDP): 2 Watt. Passmark benchmark score: 255 points. Launch price was $95.

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Processing Power

Both the Atom Z520 and Atom Z530 share an identical 1-core/2-thread configuration. Boost clocks reach 0.03 GHz on the Atom Z520 versus 0.1 GHz on the Atom Z530 — a 107.7% clock advantage for the Atom Z530 (base: 1.33 GHz vs 1.6 GHz). Both are built on the Silverthorne (2008−2010) architecture using a 45 nm process. In PassMark, the Atom Z520 scores 215 against the Atom Z530's 255 — a 17% lead for the Atom Z530. Both processors carry 0 kB of L3 cache.

Feature	Atom Z520	Atom Z530
Cores / Threads	1 / 2	1 / 2
Boost Clock	0.03 GHz	0.1 GHz+233%
Base Clock	1.33 GHz	1.6 GHz+20%
L3 Cache	0 kB	0 kB
L2 Cache	512 kB	512 kB
Process	45 nm	45 nm
Architecture	Silverthorne (2008−2010)	Silverthorne (2008−2010)
PassMark	215	255+19%

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Memory & Platform

Both processors use the PBGA441 socket with PCIe 2.0. Both support up to DDR2-533 memory speed. Both support up to 2 GB of RAM. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: Intel US15W (Atom Z520) and Intel US15W (Atom Z530).