Core 2 Duo E6550 vs Pentium 3825U

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 E6550 vs Pentium 3825U 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 E6550 vs Pentium 3825U: 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 E6550

2007

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 3825U.

Trade-offs

❌Lower PassMark (1,395 vs 1,396).
❌Launch MSRP is still $163 MSRP, while Pentium 3825U mostly shows up through inconsistent older-market listings.

Pentium 3825U

2015

Why buy it

✅+0.1% higher PassMark.

Trade-offs

❌687.7% higher power demand at 512W vs 65W.
❌No boxed cooler included, unlike Core 2 Duo E6550.

Quick Answers

So, is Core 2 Duo E6550 better than Pentium 3825U?

It depends on what you want from the system. For gaming, Core 2 Duo E6550 is ahead with a 2.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Pentium 3825U pulls ahead with 0.1% better PassMark.

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

For streaming, content creation, and heavier multitasking, Pentium 3825U is the stronger fit. You are getting 0.1% better PassMark, backed by 2 cores and 4 threads.

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

Core 2 Duo E6550 is the better buy right now. Core 2 Duo E6550 comes in at an unclear MSRP at $163 MSRP versus unclear MSRP, and it still gives you a 2.0% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Pentium 3825U is still stronger for heavier multi-core work with 0.1% better PassMark. It is also 100.0% better value on MSRP (8.6 vs 0.0 PassMark/$), 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 3825U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2007) and more multi-core headroom with 2 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 E6550 vs Pentium 3825U Technical Specifications

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

Core 2 Duo E6550

The Core 2 Duo E6550 is manufactured by Intel. It was released in 2008-01-01. It is based on the Conroe (2006−2007) architecture. It features 2 cores and 2 threads. Base frequency is 2.33 GHz, with boost up to 2.33 GHz. L3 cache: 0 kB. L2 cache: 4 MB. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,395 points. Launch price was $249.

Pentium 3825U

The Pentium 3825U is manufactured by Intel. It was released in 1 March 2015 (10 years ago). It is based on the Broadwell-U (2015) architecture. It features 2 cores and 4 threads. Base frequency is 1.9 GHz, with boost up to 1.9 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,396 points. Launch price was $161.

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Processing Power

The Core 2 Duo E6550 packs 2 cores / 2 threads, matching the Pentium 3825U's 2 cores. Boost clocks reach 2.33 GHz on the Core 2 Duo E6550 versus 1.9 GHz on the Pentium 3825U — a 20.3% clock advantage for the Core 2 Duo E6550 (base: 2.33 GHz vs 1.9 GHz). The Core 2 Duo E6550 uses the Conroe (2006−2007) architecture (65 nm), while the Pentium 3825U uses Broadwell-U (2015) (14 nm). In PassMark, the Core 2 Duo E6550 scores 1,395 against the Pentium 3825U's 1,396 — a 0.1% lead for the Pentium 3825U. L3 cache: 0 kB on the Core 2 Duo E6550 vs 2 MB (total) on the Pentium 3825U.

Feature	Core 2 Duo E6550	Pentium 3825U
Cores / Threads	2 / 2	2 / 4
Boost Clock	2.33 GHz+23%	1.9 GHz
Base Clock	2.33 GHz+23%	1.9 GHz
L3 Cache	0 kB	2 MB (total)
L2 Cache	4 MB	256K (per core)+6300%
Process	65 nm	14 nm-78%
Architecture	Conroe (2006−2007)	Broadwell-U (2015)
PassMark	1,395	1,396

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Memory & Platform

The Core 2 Duo E6550 uses the LGA775 socket (PCIe 1.1), while the Pentium 3825U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard.