Atom C3558 vs Core 2 Duo P7550

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 C3558 vs Core 2 Duo P7550 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 C3558 vs Core 2 Duo P7550: Pros, Cons & Final Verdict

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

Atom C3558

2017

Why buy it

✅+166.7% larger total L3 cache (8 MB vs 3 MB).
✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (2,431 vs 2,439).
❌433.3% higher power demand at 16W vs 3W.

Core 2 Duo P7550

2009

Why buy it

✅Draws 3W instead of 16W, a 13W reduction.

Trade-offs

❌Smaller total L3 cache (3 MB vs 8 MB).

Quick Answers

So, is Core 2 Duo P7550 better than Atom C3558?

Yes. Core 2 Duo P7550 is the better all-around CPU here. It gives you a 2.8% average FPS lead across 50 shared CPU game tests in our data and 0.3% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core 2 Duo P7550 is the better pick. According to our tests, it delivers 2.8% 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, Core 2 Duo P7550 is the stronger fit. You are getting 0.3% better PassMark, backed by 2 cores and 2 threads.

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

Core 2 Duo P7550 still makes the most sense overall. Core 2 Duo P7550 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 2.8% average FPS lead across 50 shared CPU game tests in our data.

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

Atom C3558 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2017 vs 2009) and 166.7% larger total L3 cache (8 MB vs 3 MB). That makes it the safer long-term bet.

Atom C3558 vs Core 2 Duo P7550 Technical Specifications

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

Atom C3558

The Atom C3558 is manufactured by Intel. It was released in 15 August 2017 (8 years ago). It is based on the Goldmont (2016−2017) architecture. It features 4 cores and 4 threads. Base frequency is 2.2 GHz, with boost up to 2.2 GHz. L3 cache: 8 MB. L2 cache: 8 MB. Built on 14 nm process technology. Socket: FCBGA1310. Thermal design power (TDP): 16 Watt. Memory support: DDR4: 2133. Passmark benchmark score: 2,431 points. Launch price was $86.

Core 2 Duo P7550

The Core 2 Duo P7550 is manufactured by Intel. It was released in 2008-01-01. It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.26 GHz, with boost up to 2.26 GHz. L3 cache: 3 MB L2 Cache. L2 cache: 3 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 25 Watt. Passmark benchmark score: 2,439 points. Launch price was $249.

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Processing Power

The Atom C3558 packs 4 cores / 4 threads, while the Core 2 Duo P7550 offers 2 cores / 2 threads — the Atom C3558 has 2 more cores. Boost clocks reach 2.2 GHz on the Atom C3558 versus 2.26 GHz on the Core 2 Duo P7550 — a 2.7% clock advantage for the Core 2 Duo P7550 (base: 2.2 GHz vs 2.26 GHz). The Atom C3558 uses the Goldmont (2016−2017) architecture (14 nm), while the Core 2 Duo P7550 uses Penryn (2008−2011) (45 nm). In PassMark, the Atom C3558 scores 2,431 against the Core 2 Duo P7550's 2,439 — a 0.3% lead for the Core 2 Duo P7550. L3 cache: 8 MB on the Atom C3558 vs 3 MB L2 Cache on the Core 2 Duo P7550.

Feature	Atom C3558	Core 2 Duo P7550
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	2.2 GHz	2.26 GHz+3%
Base Clock	2.2 GHz	2.26 GHz+3%
L3 Cache	8 MB+167%	3 MB L2 Cache
L2 Cache	8 MB+167%	3 MB
Process	14 nm-69%	45 nm
Architecture	Goldmont (2016−2017)	Penryn (2008−2011)
PassMark	2,431	2,439

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Memory & Platform

The Atom C3558 uses the FCBGA1310 socket (PCIe 3.0), while the Core 2 Duo P7550 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	Atom C3558	Core 2 Duo P7550
Socket	FCBGA1310	PGA478
PCIe Generation	PCIe 3.0+173%	PCIe 1.1
Max RAM Speed	DDR4-2133	—
Max RAM Capacity	256 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	12	—