Core i7-640LM vs Celeron N4020C

CPU

GPU

Core i7-640LM

2 Cores4 Thrd25 WWMax: 2.93 GHz2010

Celeron N4020C

2 Cores2 Thrd6 WWMax: 2.8 GHz2021

Performance Spectrum - CPU

Core i7-640LM

2 / 4

1,529

0.0%

1,537

+0.5%

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.

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 Core i7-640LM is positioned at rank 333 and the Celeron N4020C is on rank 575, 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 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 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 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	Core i7-640LM	Celeron N4020C
Gaming	✅ Superior gaming performance	❌ Lower gaming performance
Workstation	❌ Weaker in multi-core tasks	✅ Better multi-core power
Price	Equivalent pricing	Equivalent pricing
Longevity	🛑 Legacy (Arrandale (2010−2011) / 32 nm)	✨ Modern (Legacy / 14 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	Core i7-640LM	Celeron N4020C
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.

Core i7-640LM Benchmark Check

Celeron N4020C Benchmark Check

Technical Specifications

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

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.

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.

⚡

Processing Power

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

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

🧠

Memory & Platform

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

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

🔧

Advanced Features

Virtualization: true (Core i7-640LM) / not specified (Celeron N4020C). 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.