Core 2 Duo E7400 vs Pentium 3558U

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.

Core 2 Duo E7400 vs Pentium 3558U 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.

Core 2 Duo E7400 vs Pentium 3558U: Pros, Cons & Final Verdict

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

Core 2 Duo E7400

2008

Why buy it

✅Draws 65W instead of 512W, a 447W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (true), unlike Pentium 3558U.

Trade-offs

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

Pentium 3558U

2014

Why buy it

Trade-offs

❌Lower PassMark (1,041 vs 1,043).
❌687.7% higher power demand at 512W vs 65W.
❌No boxed cooler included, unlike Core 2 Duo E7400.

Quick Answers

So, is Core 2 Duo E7400 better than Pentium 3558U?

Yes. Core 2 Duo E7400 is the better all-around CPU here. It gives you a 2.0% average FPS lead across 50 shared CPU game tests in our data and 0.2% 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 E7400 is the better pick. According to our tests, it delivers 2.0% 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 E7400 is the stronger fit. You are getting 0.2% better PassMark, backed by 2 cores and 2 threads.

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

Core 2 Duo E7400 still makes the most sense overall. Core 2 Duo E7400 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 2.0% average FPS lead across 50 shared CPU game tests in our data.

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

Pentium 3558U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2008). That makes it the safer long-term bet.

Core 2 Duo E7400 vs Pentium 3558U Technical Specifications

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

Core 2 Duo E7400

The Core 2 Duo E7400 is manufactured by Intel. It was released in 2008-01-01. It is based on the Wolfdale (2008−2010) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 3 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,043 points. Launch price was $249.

Pentium 3558U

The Pentium 3558U is manufactured by Intel. It was released in 1 January 2014 (11 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 2 threads. Base frequency is 1.7 GHz, with boost up to 1.7 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 22 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,041 points. Launch price was $161.

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Processing Power

Both the Core 2 Duo E7400 and Pentium 3558U share an identical 2-core/2-thread configuration. Boost clocks reach 2.8 GHz on the Core 2 Duo E7400 versus 1.7 GHz on the Pentium 3558U — a 48.9% clock advantage for the Core 2 Duo E7400 (base: 2.8 GHz vs 1.7 GHz). The Core 2 Duo E7400 uses the Wolfdale (2008−2010) architecture (45 nm), while the Pentium 3558U uses Haswell (2013−2015) (22 nm). In PassMark, the Core 2 Duo E7400 scores 1,043 against the Pentium 3558U's 1,041 — a 0.2% lead for the Core 2 Duo E7400. L3 cache: 0 kB on the Core 2 Duo E7400 vs 2 MB on the Pentium 3558U.

Feature	Core 2 Duo E7400	Pentium 3558U
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.8 GHz+65%	1.7 GHz
Base Clock	2.8 GHz+65%	1.7 GHz
L3 Cache	0 kB	2 MB
L2 Cache	3 MB (total)+500%	512 kB
Process	45 nm	22 nm-51%
Architecture	Wolfdale (2008−2010)	Haswell (2013−2015)
PassMark	1,043	1,041

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Memory & Platform

The Core 2 Duo E7400 uses the LGA775 socket (PCIe 1.1), while the Pentium 3558U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard.