Atom Z520 vs C-30

Atom Z520 vs C-30 Performance Spectrum

Atom Z520

1 / 2

215

+7.0%

201

0.0%

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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 Z520 vs C-30 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 C-30: 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

✅+7% higher PassMark.
✅Draws 2W instead of 512W, a 510W reduction.

Trade-offs

❌No integrated graphics, while C-30 can still boot and troubleshoot without a discrete GPU.

C-30

2011

Why buy it

✅100+% more PCIe lanes (4 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon HD 6250, while Atom Z520 needs a discrete GPU.

Trade-offs

❌Lower PassMark (201 vs 215).
❌Launch MSRP is still $50 MSRP, while Atom Z520 mostly shows up through inconsistent older-market listings.
❌25500% higher power demand at 512W vs 2W.

Quick Answers

So, is C-30 better than Atom Z520?

It depends on what you want from the system. For gaming, C-30 is ahead with 3900% higher max boost clock. For rendering, compiling, streaming, and heavier multitasking, Atom Z520 pulls ahead with 7% better PassMark.

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

For streaming, content creation, and heavier multitasking, Atom Z520 is the stronger fit. You are getting 7% better PassMark, backed by 1 cores and 2 threads.

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

C-30 is the better buy right now. C-30 comes in at an unclear MSRP at $50 MSRP versus unclear MSRP, and it still gives you 3900% higher max boost clock. The compromise is that Atom Z520 is still stronger for heavier multi-core work with 7% better PassMark. It is also 100.0% better value on MSRP (4.0 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

C-30 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2008). That makes it the safer long-term bet.

Atom Z520 vs C-30 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.

C-30

The C-30 is manufactured by AMD. It was released in 4 January 2011 (14 years ago). It is based on the Ontario (2011−2012) architecture. It features 1 cores and 1 threads. Max frequency: 1.2 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 40 nm process technology. Socket: FT1. Thermal design power (TDP): 512 kB. Memory support: DDR3 Single-channel. Passmark benchmark score: 201 points. Launch price was $69.

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Processing Power

The Atom Z520 packs 1 cores / 2 threads, matching the C-30's 1 cores. Boost clocks reach 0.03 GHz on the Atom Z520 versus 1.2 GHz on the C-30 — a 190.2% clock advantage for the C-30. The Atom Z520 uses the Silverthorne (2008−2010) architecture (45 nm), while the C-30 uses Ontario (2011−2012) (40 nm). In PassMark, the Atom Z520 scores 215 against the C-30's 201 — a 6.7% lead for the Atom Z520. Both processors carry 0 kB of L3 cache.

Feature	Atom Z520	C-30
Cores / Threads	1 / 2	1 / 1
Boost Clock	0.03 GHz	1.2 GHz+3900%
Base Clock	1.33 GHz	—
L3 Cache	0 kB	0 kB
L2 Cache	512 kB	512 kB
Process	45 nm	40 nm-11%
Architecture	Silverthorne (2008−2010)	Ontario (2011−2012)
PassMark	215+7%	201

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Memory & Platform

The Atom Z520 uses the PBGA441 socket (PCIe 2.0), while the C-30 uses FT1 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-533 on the Atom Z520 versus DDR3-1066 on the C-30 — the C-30 supports 100% faster memory, which can translate to measurable gains in memory-sensitive workloads. The C-30 supports up to 4 GB of RAM compared to 2 GB — 100% more capacity for professional workloads. Both feature 1-channel memory with ECC support. PCIe lanes: 0 (Atom Z520) vs 4 (C-30) — the C-30 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel US15W (Atom Z520) and AMD BGA413 (C-30).

Feature	Atom Z520	C-30
Socket	PBGA441	FT1
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR2-533	DDR3-1066+100%
Max RAM Capacity	2 GB	4 GB+100%
RAM Channels	1	1
ECC Support	No	No
PCIe Lanes	0	4

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Advanced Features

Virtualization: VT-x (Atom Z520) / not specified (C-30). The C-30 includes integrated graphics (Radeon HD 6250), while the Atom Z520 requires a dedicated GPU. Primary use case: Atom Z520 targets Mobile.