Core 2 Duo E8400 vs Sempron 3850

Core 2 Duo E8400 vs Sempron 3850 Performance Spectrum

Core 2 Duo E8400

2 / 2

1,165

0.0%

1,168

+0.3%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

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.

Core 2 Duo E8400 vs Sempron 3850 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 E8400 vs Sempron 3850: 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 E8400

2008

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (true), unlike Sempron 3850.

Trade-offs

❌Lower PassMark (1,165 vs 1,168).
❌160% higher power demand at 65W vs 25W.

Sempron 3850

2014

Why buy it

✅+0.3% higher PassMark.
✅Draws 25W instead of 65W, a 40W reduction.

Trade-offs

❌No boxed cooler included, unlike Core 2 Duo E8400.

Quick Answers

So, is Sempron 3850 better than Core 2 Duo E8400?

It depends on what you want from the system. For gaming, Core 2 Duo E8400 is ahead with a 0.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Sempron 3850 pulls ahead with 0.3% better PassMark.

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

For streaming, content creation, and heavier multitasking, Sempron 3850 is the stronger fit. You are getting 0.3% better PassMark, backed by 4 cores and 4 threads.

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

Sempron 3850 still makes the most sense overall. Sempron 3850 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.3% better PassMark.

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

Sempron 3850 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 4 cores / 4 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 E8400 vs Sempron 3850 Technical Specifications

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

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.

Sempron 3850

The Sempron 3850 is manufactured by AMD. It was released in 2007-01-01. It is based on the Kabini (2013−2014) architecture. It features 4 cores and 4 threads. Max frequency: 1.3 GHz. L2 cache: 2048 kB. Built on 28 nm process technology. Socket: AM1. Thermal design power (TDP): 25 Watt. Memory support: DDR3-1600. Passmark benchmark score: 1,168 points. Launch price was $69.

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Processing Power

The Core 2 Duo E8400 packs 2 cores / 2 threads, while the Sempron 3850 offers 4 cores / 4 threads — the Sempron 3850 has 2 more cores. Boost clocks reach 3 GHz on the Core 2 Duo E8400 versus 1.3 GHz on the Sempron 3850 — a 79.1% clock advantage for the Core 2 Duo E8400. The Core 2 Duo E8400 uses the Wolfdale (2008−2010) architecture (45 nm), while the Sempron 3850 uses Kabini (2013−2014) (28 nm). In PassMark, the Core 2 Duo E8400 scores 1,165 against the Sempron 3850's 1,168 — a 0.3% lead for the Sempron 3850.

Feature	Core 2 Duo E8400	Sempron 3850
Cores / Threads	2 / 2	4 / 4+100%
Boost Clock	3 GHz+131%	1.3 GHz
Base Clock	3 GHz	—
L3 Cache	0 kB	—
L2 Cache	6 MB (total)+200%	2048 kB
Process	45 nm	28 nm-38%
Architecture	Wolfdale (2008−2010)	Kabini (2013−2014)
PassMark	1,165	1,168

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Memory & Platform

The Core 2 Duo E8400 uses the LGA775 socket (PCIe 1.1), while the Sempron 3850 uses AM1 (PCIe 2.0) — making them incompatible on the same motherboard.