Celeron N4020C vs Core i7-640LM

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.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money. The Celeron N4020C is positioned at rank 575 and the Core i7-640LM is on rank 333, so the Core i7-640LM offers better cost-efficiency for playing games.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar Celeron N4020C

#179

Core i7-1260P

MSRP: $432|Avg: $432

100%

#563

Atom x5-Z8300

MSRP: $20|Avg: N/A

763%

#564

Atom Z3735G

MSRP: $17|Avg: N/A

752%

#565

Core i5-480M

MSRP: $81|Avg: $77

691%

#566

Core i5-460M

MSRP: $80|Avg: $129

687%

#567

Core i5-2540M

MSRP: $266|Avg: $10

681%

#569

Core i5-450M

MSRP: $32|Avg: $31

658%

#570

Core i3-380M

MSRP: $49|Avg: $25

631%

#571

Core i5-430M

MSRP: N/A|Avg: $33

630%

#572

Core 2 Duo T6600

MSRP: N/A|Avg: $4

613%

#575

Celeron N4020C

MSRP: N/A|Avg: N/A

100%

#583

Processor N100

MSRP: $128|Avg: $100

99%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Core i7-640LM

#321

Atom x5-Z8300

MSRP: $20|Avg: N/A

480%

#322

Atom Z3735G

MSRP: $17|Avg: N/A

473%

#323

Core i5-480M

MSRP: $81|Avg: $77

434%

#324

Core i5-460M

MSRP: $80|Avg: $129

432%

#325

Core i5-2540M

MSRP: $266|Avg: $10

428%

#327

Core i5-450M

MSRP: $32|Avg: $31

413%

#328

Core i3-380M

MSRP: $49|Avg: $25

396%

#329

Core i5-430M

MSRP: N/A|Avg: $33

396%

#330

Core 2 Duo T6600

MSRP: N/A|Avg: $4

385%

#333

Core i7-640LM

MSRP: N/A|Avg: N/A

100%

#336

Xeon E3-1505M v5

MSRP: $115|Avg: $115

99%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Generational Difference: This comparison involves processors from different technological eras. The Celeron N4020C (2021) utilizes 14 nm technology and DDR4/LPDDR4 up to 2400 MT/s, providing a fundamental performance advantage.

Insight	Celeron N4020C	Core i7-640LM
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	Equivalent pricing	Equivalent pricing
Longevity	✨ Modern (Legacy / 14 nm)	🛑 Legacy (Arrandale (2010−2011) / 32 nm)

💎 Value Proposition

The Core i7-640LM (2010) relies on 32 nm technology and DDR3-800, DDR3-1066, placing it in a different performance category relative to modern standards.

Insight	Celeron N4020C	Core i7-640LM
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	Equivalent pricing	Equivalent pricing

Performance Check

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Celeron N4020C Benchmark Check

Core i7-640LM Benchmark Check

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Technical Specifications

Side-by-side comparison of Celeron N4020C and Core i7-640LM

Celeron N4020C

The Celeron N4020C is manufactured by Intel. It was released in 2007-01-01. It features 2 cores and 2 threads. Base frequency is 1.1 GHz, with boost up to 2.8 GHz. L3 cache: 4 MB. Built on 14 nm process technology. Socket: FCBGA1090. Thermal design power (TDP): 6 Watt. Memory support: DDR4/LPDDR4 up to 2400 MT/s. Passmark benchmark score: 1,537 points. Launch price was $69.

Core i7-640LM

The Core i7-640LM is manufactured by Intel. It was released in 7 January 2010 (15 years ago). It is based on the Arrandale (2010−2011) architecture. It features 2 cores and 4 threads. Base frequency is 2.13 GHz, with boost up to 2.93 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: BGA1288. Thermal design power (TDP): 25 Watt. Memory support: DDR3-800, DDR3-1066. Passmark benchmark score: 1,529 points. Launch price was $332.

⚡

Processing Power

The Celeron N4020C packs 2 cores / 2 threads, matching the Core i7-640LM's 2 cores. Boost clocks reach 2.8 GHz on the Celeron N4020C versus 2.93 GHz on the Core i7-640LM — a 4.5% clock advantage for the Core i7-640LM (base: 1.1 GHz vs 2.13 GHz). The Core i7-640LM is built on the Arrandale (2010−2011) architecture. In PassMark, the Celeron N4020C scores 1,537 against the Core i7-640LM's 1,529 — a 0.5% lead for the Celeron N4020C. L3 cache: 4 MB on the Celeron N4020C vs 4 MB (total) on the Core i7-640LM.

Feature	Celeron N4020C	Core i7-640LM
Cores / Threads	2 / 2	2 / 4
Boost Clock	2.8 GHz	2.93 GHz+5%
Base Clock	1.1 GHz	2.13 GHz+94%
L3 Cache	4 MB	4 MB (total)
L2 Cache	—	256 kB (per core)
Process	14 nm-56%	32 nm
Architecture	—	Arrandale (2010−2011)
PassMark	1,537	1,529

🧠

Memory & Platform

The Celeron N4020C uses the FCBGA1090 socket (PCIe 4.0), while the Core i7-640LM uses BGA1288 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Celeron N4020C	Core i7-640LM
Socket	FCBGA1090	BGA1288
PCIe Generation	PCIe 4.0+100%	PCIe 2.0
Max RAM Speed	—	1066
Max RAM Capacity	—	8
RAM Channels	—	2
ECC Support	—	❌
PCIe Lanes	—	16

🔧

Advanced Features

Virtualization: not specified (Celeron N4020C) / true (Core i7-640LM). The Core i7-640LM includes integrated graphics (Intel HD Graphics (Ironlake)), while the Celeron N4020C requires a dedicated GPU. Direct competitor: Core i7-640LM rivals Core 2 Duo SL9400.