Core 2 Duo E6420 vs Pentium Dual Core T4300

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 E6420 vs Pentium Dual Core T4300 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 E6420 vs Pentium Dual Core T4300: 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 E6420

2007

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (true), unlike Pentium Dual Core T4300.

Trade-offs

❌Lower PassMark per dollar, at 6.7 vs 8.2 PassMark/$ ($183 MSRP vs $150 MSRP).
❌85.7% higher power demand at 65W vs 35W.

Pentium Dual Core T4300

2009

Why buy it

✅Costs $33 less on MSRP ($150 MSRP vs $183 MSRP).
✅Delivers 21.7% more PassMark for each dollar spent, at 8.2 vs 6.7 PassMark/$ ($150 MSRP vs $183 MSRP).
✅Draws 35W instead of 65W, a 30W reduction.

Trade-offs

❌Lower PassMark (1,232 vs 1,235).
❌No boxed cooler included, unlike Core 2 Duo E6420.

Quick Answers

So, is Core 2 Duo E6420 better than Pentium Dual Core T4300?

Yes. Core 2 Duo E6420 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 0.2% 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 E6420 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 E6420 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 E6420 is still the much better call for a fresh build. Core 2 Duo E6420 comes in 22.0% more expensive on MSRP at $183 MSRP versus $150 MSRP, and it still gives you a 0.1% average FPS lead across 50 shared CPU game tests in our data. Pentium Dual Core T4300 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2009 platform. Even with 21.7% better value on paper (8.2 vs 6.7 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on P.

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

Pentium Dual Core T4300 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2007). That makes it the safer long-term bet.

Core 2 Duo E6420 vs Pentium Dual Core T4300 Technical Specifications

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

Core 2 Duo E6420

The Core 2 Duo E6420 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: 4 MB. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,235 points. Launch price was $249.

Pentium Dual Core T4300

The Pentium Dual Core T4300 is manufactured by Intel. It was released in 2007-01-01. It is based on the NetBurst (2000−2006) architecture. It features 2 cores and 2 threads. Base frequency is 2.1 GHz, with boost up to 2.1 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 45 nm process technology. Socket: P. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,232 points. Launch price was $69.

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Processing Power

Both the Core 2 Duo E6420 and Pentium Dual Core T4300 share an identical 2-core/2-thread configuration. Boost clocks reach 2.13 GHz on the Core 2 Duo E6420 versus 2.1 GHz on the Pentium Dual Core T4300 — a 1.4% clock advantage for the Core 2 Duo E6420 (base: 2.13 GHz vs 2.1 GHz). The Core 2 Duo E6420 uses the Conroe (2006−2007) architecture (65 nm), while the Pentium Dual Core T4300 uses NetBurst (2000−2006) (45 nm). In PassMark, the Core 2 Duo E6420 scores 1,235 against the Pentium Dual Core T4300's 1,232 — a 0.2% lead for the Core 2 Duo E6420. Both processors carry 0 kB of L3 cache.

Feature	Core 2 Duo E6420	Pentium Dual Core T4300
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.13 GHz+1%	2.1 GHz
Base Clock	2.13 GHz+1%	2.1 GHz
L3 Cache	0 kB	0 kB
L2 Cache	4 MB+300%	1 MB
Process	65 nm	45 nm-31%
Architecture	Conroe (2006−2007)	NetBurst (2000−2006)
PassMark	1,235	1,232

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Memory & Platform

The Core 2 Duo E6420 uses the LGA775 socket (PCIe 1.1), while the Pentium Dual Core T4300 uses P (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches 1066 on the Core 2 Duo E6420 versus DDR3-800 on the Pentium Dual Core T4300 — the Core 2 Duo E6420 supports 33.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core 2 Duo E6420 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: 16 (Core 2 Duo E6420) vs 0 (Pentium Dual Core T4300) — the Core 2 Duo E6420 offers 16 more lanes for additional GPUs or NVMe drives.

Feature	Core 2 Duo E6420	Pentium Dual Core T4300
Socket	LGA775	P
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	1066+33%	DDR3-800
Max RAM Capacity	16 GB+100%	8 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: true (Core 2 Duo E6420) vs No VT-x (Pentium Dual Core T4300). Primary use case: Pentium Dual Core T4300 targets Mobile. Direct competitor: Core 2 Duo E6420 rivals Athlon 64 X2 5400+.

Feature	Core 2 Duo E6420	Pentium Dual Core T4300
Integrated GPU	No	No
IGPU Model	None	—
Unlocked	No	No
AVX-512	No	No
Virtualization	true	No VT-x
Target Use	—	Mobile

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Value Analysis

At launch, the Core 2 Duo E6420 was priced at $183, while the Pentium Dual Core T4300 came in at $150. On launch pricing ($183 vs $150), Pentium Dual Core T4300 was $33 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Duo E6420 delivers 6.7 pts/$ vs 8.2 pts/$ for the Pentium Dual Core T4300 — making the Pentium Dual Core T4300 the 19.6% better value option.

Feature	Core 2 Duo E6420	Pentium Dual Core T4300
MSRP	$183	$150-18%
Performance per Dollar	6.7	8.2+22%
Release Date	2007	2009

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