Core 2 Duo E6400 vs Pentium Extreme Edition 965

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 E6400 vs Pentium Extreme Edition 965 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 E6400 vs Pentium Extreme Edition 965: 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 E6400

2006

Why buy it

✅Costs $816 less on MSRP ($183 MSRP vs $999 MSRP).
✅Delivers 450.6% more PassMark for each dollar spent, at 6.4 vs 1.2 PassMark/$ ($183 MSRP vs $999 MSRP).
✅Draws 65W instead of 130W, a 65W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (true), unlike Pentium Extreme Edition 965.

Trade-offs

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

Pentium Extreme Edition 965

2006

Why buy it

Trade-offs

❌Lower PassMark (1,165 vs 1,175).
❌Lower PassMark per dollar, at 1.2 vs 6.4 PassMark/$ ($999 MSRP vs $183 MSRP).
❌100% higher power demand at 130W vs 65W.
❌No boxed cooler included, unlike Core 2 Duo E6400.

Quick Answers

So, is Core 2 Duo E6400 better than Pentium Extreme Edition 965?

Yes. Core 2 Duo E6400 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 E6400 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 E6400 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 E6400 is the better buy right now. Core 2 Duo E6400 comes in $816 cheaper on MSRP at $183 MSRP versus $999 MSRP, and it still gives you a 0.1% average FPS lead across 50 shared CPU game tests in our data. It is also 450.6% better value on MSRP (6.4 vs 1.2 PassMark/$), 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 Extreme Edition 965 is the safer long-term CPU choice because it gives you more room to grow and a better platform outlook.

Core 2 Duo E6400 vs Pentium Extreme Edition 965 Technical Specifications

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

Core 2 Duo E6400

The Core 2 Duo E6400 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 2.13 GHz, with boost up to 2.13 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,175 points. Launch price was $249.

Pentium Extreme Edition 965

The Pentium Extreme Edition 965 is manufactured by Intel. It was released in 26 March 2006 (19 years ago). It is based on the Presler (2005−2007) architecture. It features 2 cores and 4 threads. Base frequency is 3.733 GHz, with boost up to 0.73 GHz. L2 cache: 2 MB (per core). Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 130 Watt. Memory support: DDR1, DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 1,165 points. Launch price was $999.

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Processing Power

The Core 2 Duo E6400 packs 2 cores / 2 threads, matching the Pentium Extreme Edition 965's 2 cores. Boost clocks reach 2.13 GHz on the Core 2 Duo E6400 versus 0.73 GHz on the Pentium Extreme Edition 965 — a 97.9% clock advantage for the Core 2 Duo E6400 (base: 2.13 GHz vs 3.733 GHz). The Core 2 Duo E6400 uses the Conroe (2006−2007) architecture (65 nm), while the Pentium Extreme Edition 965 uses Presler (2005−2007) (65 nm). In PassMark, the Core 2 Duo E6400 scores 1,175 against the Pentium Extreme Edition 965's 1,165 — a 0.9% lead for the Core 2 Duo E6400.

Feature	Core 2 Duo E6400	Pentium Extreme Edition 965
Cores / Threads	2 / 2	2 / 4
Boost Clock	2.13 GHz+192%	0.73 GHz
Base Clock	2.13 GHz	3.733 GHz+75%
L3 Cache	0 kB	—
L2 Cache	2 MB	2 MB (per core)
Process	65 nm	65 nm
Architecture	Conroe (2006−2007)	Presler (2005−2007)
PassMark	1,175	1,165

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Memory & Platform

Both processors use the LGA775 socket with PCIe 1.1.

Feature	Core 2 Duo E6400	Pentium Extreme Edition 965
Socket	LGA775	LGA775
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	1066	—
Max RAM Capacity	16	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: true (Core 2 Duo E6400) / not specified (Pentium Extreme Edition 965). Direct competitor: Core 2 Duo E6400 rivals Athlon 64 X2 5400+.

Feature	Core 2 Duo E6400	Pentium Extreme Edition 965
Integrated GPU	No	—
IGPU Model	None	—
Unlocked	No	—
AVX-512	No	—
Virtualization	true	—

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Value Analysis

At launch, the Core 2 Duo E6400 was priced at $183, while the Pentium Extreme Edition 965 came in at $999. On launch pricing ($183 vs $999), Core 2 Duo E6400 was $816 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Duo E6400 delivers 6.4 pts/$ vs 1.2 pts/$ for the Pentium Extreme Edition 965 — making the Core 2 Duo E6400 the 138.5% better value option.

Feature	Core 2 Duo E6400	Pentium Extreme Edition 965
MSRP	$183-82%	$999
Performance per Dollar	6.4+433%	1.2
Release Date	2006	2006

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