Celeron E3300 vs Core 2 Duo E8400

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.

Celeron E3300 vs Core 2 Duo E8400 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.

Celeron E3300 vs Core 2 Duo E8400: Pros, Cons & Final Verdict

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

Celeron E3300

2009

Why buy it

Trade-offs

❌Lower PassMark (1,155 vs 1,165).
❌Launch MSRP is still $50 MSRP, while Core 2 Duo E8400 mostly shows up through inconsistent older-market listings.
❌No boxed cooler included, unlike Core 2 Duo E8400.

Core 2 Duo E8400

2008

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (true), unlike Celeron E3300.

Trade-offs

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

Quick Answers

So, is Core 2 Duo E8400 better than Celeron E3300?

Yes. Core 2 Duo E8400 is the better all-around CPU here. It gives you a 0.1% average FPS lead across 50 shared CPU game tests in our data and 0.9% 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 E8400 is the better pick. According to our tests, it delivers 0.1% 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 E8400 is the stronger fit. You are getting 0.9% better PassMark, backed by 2 cores and 2 threads.

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

Core 2 Duo E8400 is still the much better call for a fresh build. Core 2 Duo E8400 comes in at an unclear MSRP at unclear MSRP versus $50 MSRP, and it still gives you a 0.1% average FPS lead across 50 shared CPU game tests in our data. Celeron E3300 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2009 platform. Even with 100.0% better value on paper (23.1 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA775.

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

Celeron E3300 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2008). That makes it the safer long-term bet.

Celeron E3300 vs Core 2 Duo E8400 Technical Specifications

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

Celeron E3300

The Celeron E3300 is manufactured by Intel. It was released in 30 August 2009 (16 years ago). It is based on the Wolfdale (2008−2010) architecture. It features 2 cores and 2 threads. Base frequency is 2.5 GHz, with boost up to 2.5 GHz. L3 cache: 0 kB. L2 cache: 1 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,155 points. Launch price was $70.

Core 2 Duo E8400

The Core 2 Duo E8400 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 3 GHz, with boost up to 3 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: 1,165 points. Launch price was $249.

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Processing Power

Both the Celeron E3300 and Core 2 Duo E8400 share an identical 2-core/2-thread configuration. Boost clocks reach 2.5 GHz on the Celeron E3300 versus 3 GHz on the Core 2 Duo E8400 — a 18.2% clock advantage for the Core 2 Duo E8400 (base: 2.5 GHz vs 3 GHz). Both are built on the Wolfdale (2008−2010) architecture using a 45 nm process. In PassMark, the Celeron E3300 scores 1,155 against the Core 2 Duo E8400's 1,165 — a 0.9% lead for the Core 2 Duo E8400. Both processors carry 0 kB of L3 cache.

Feature	Celeron E3300	Core 2 Duo E8400
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.5 GHz	3 GHz+20%
Base Clock	2.5 GHz	3 GHz+20%
L3 Cache	0 kB	0 kB
L2 Cache	1 MB (total)	6 MB (total)+500%
Process	45 nm	45 nm
Architecture	Wolfdale (2008−2010)	Wolfdale (2008−2010)
PassMark	1,155	1,165
Geekbench 6 Single	347	—
Geekbench 6 Multi	624	—

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Memory & Platform

Both processors use the LGA775 socket with PCIe 1.1. Maximum memory speed reaches DDR3-1066 on the Celeron E3300 versus 1333 on the Core 2 Duo E8400 — the Core 2 Duo E8400 supports 25% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core 2 Duo E8400 supports up to 16 GB of RAM compared to 8 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Celeron E3300) vs 16 (Core 2 Duo E8400) — the Core 2 Duo E8400 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: G31,G41,P45 (Celeron E3300) and P35,G31,G33,P45 (Core 2 Duo E8400).

Feature	Celeron E3300	Core 2 Duo E8400
Socket	LGA775	LGA775
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR3-1066	1333+25%
Max RAM Capacity	8 GB	16 GB+100%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	16

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Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x (Celeron E3300) vs true (Core 2 Duo E8400). Primary use case: Celeron E3300 targets Budget. Direct competitor: Celeron E3300 rivals Pentium E5200; Core 2 Duo E8400 rivals Phenom II X2 550.