Core 2 Duo E8300 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 E8300 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 E8300 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 E8300

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 (Stock), unlike Pentium 3558U.

Trade-offs

❌Lower PassMark (1,039 vs 1,041).
❌Launch MSRP is still $163 MSRP, while Pentium 3558U mostly shows up through inconsistent older-market listings.

Pentium 3558U

2014

Why buy it

✅+0.2% higher PassMark.

Trade-offs

❌687.7% higher power demand at 512W vs 65W.
❌No boxed cooler included, unlike Core 2 Duo E8300.

Quick Answers

So, is Core 2 Duo E8300 better than Pentium 3558U?

It depends on what you want from the system. For gaming, Core 2 Duo E8300 is ahead with a 1.9% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Pentium 3558U pulls ahead with 0.2% better PassMark.

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

For streaming, content creation, and heavier multitasking, Pentium 3558U 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 E8300 is the better buy right now. Core 2 Duo E8300 comes in at an unclear MSRP at $163 MSRP versus unclear MSRP, and it still gives you a 1.9% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Pentium 3558U is still stronger for heavier multi-core work with 0.2% better PassMark. It is also 100.0% better value on MSRP (6.4 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Pentium 3558U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2008) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core 2 Duo E8300 vs Pentium 3558U Technical Specifications

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

Core 2 Duo E8300

The Core 2 Duo E8300 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 2.83 GHz, with boost up to 2.83 GHz. L3 cache: 0 kB. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,039 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 E8300 and Pentium 3558U share an identical 2-core/2-thread configuration. Boost clocks reach 2.83 GHz on the Core 2 Duo E8300 versus 1.7 GHz on the Pentium 3558U — a 49.9% clock advantage for the Core 2 Duo E8300 (base: 2.83 GHz vs 1.7 GHz). The Core 2 Duo E8300 uses the Wolfdale (2008−2010) architecture (45 nm), while the Pentium 3558U uses Haswell (2013−2015) (22 nm). In PassMark, the Core 2 Duo E8300 scores 1,039 against the Pentium 3558U's 1,041 — a 0.2% lead for the Pentium 3558U. L3 cache: 0 kB on the Core 2 Duo E8300 vs 2 MB on the Pentium 3558U.

Feature	Core 2 Duo E8300	Pentium 3558U
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.83 GHz+66%	1.7 GHz
Base Clock	2.83 GHz+66%	1.7 GHz
L3 Cache	0 kB	2 MB
L2 Cache	6 MB (total)+1100%	512 kB
Process	45 nm	22 nm-51%
Architecture	Wolfdale (2008−2010)	Haswell (2013−2015)
PassMark	1,039	1,041
Cinebench R23 Multi	1,000	—
Geekbench 6 Single	345	—
Geekbench 6 Multi	771	—

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Memory & Platform

The Core 2 Duo E8300 uses the LGA775 socket (PCIe 1.1), while the Pentium 3558U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core 2 Duo E8300	Pentium 3558U
Socket	LGA775	FCBGA1168
PCIe Generation	PCIe 1.1	PCIe 3.0+173%
Max RAM Speed	DDR3-1333	—
Max RAM Capacity	16 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—