Atom E3815 vs Pentium M 1.40

Atom E3815

1 Cores1 Thrd512 WWMax: 1.47 GHz2013

Pentium M 1.40

1 Cores1 Thrd24 WWMax: 1.4 GHz2003

Performance Spectrum - CPU

Atom E3815

1 / 1

365

+5.8%

345

0.0%

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 Atom E3815 is positioned at rank 1103 and the Pentium M 1.40 is on rank 271, so the Pentium M 1.40 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 Atom E3815

#1091

Atom x5-Z8300

MSRP: $20|Avg: N/A

3214%

#1092

Atom Z3735G

MSRP: $17|Avg: N/A

3166%

#1093

Core i5-480M

MSRP: $81|Avg: $77

2907%

#1094

Core i5-460M

MSRP: $80|Avg: $129

2894%

#1095

Core i5-2540M

MSRP: $266|Avg: $10

2867%

#1097

Core i5-450M

MSRP: $32|Avg: $31

2769%

#1098

Core i3-380M

MSRP: $49|Avg: $25

2655%

#1099

Core i5-430M

MSRP: N/A|Avg: $33

2651%

#1100

Core 2 Duo T6600

MSRP: N/A|Avg: $4

2579%

#1103

Atom E3815

MSRP: N/A|Avg: N/A

100%

#1104

Pentium 997

MSRP: $134|Avg: $10

99%

#1105

Pentium A1018

MSRP: $132|Avg: $15

99%

#1106

Core i5-2430M

MSRP: $225|Avg: N/A

98%

#1108

Pentium Dual Core T4500

MSRP: $150|Avg: $30

98%

#1109

Celeron B820

MSRP: $86|Avg: $15

97%

#1110

Pentium B980

MSRP: $125|Avg: $35

96%

#1111

Celeron 867

MSRP: $86|Avg: $15

96%

#1112

Pentium B970

MSRP: $125|Avg: $39

96%

#1113

Core i5-2410M

MSRP: $225|Avg: N/A

95%

#1114

Pentium T2370

MSRP: $86|Avg: $10

95%

#1115

Pentium N3710

MSRP: $161|Avg: $50

94%

#1116

Core m3-7Y30

MSRP: $281|Avg: $281

94%

#1117

Pentium 977

MSRP: $134|Avg: $10

94%

#1118

Core i7-2715QE

MSRP: $378|Avg: $50

93%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Pentium M 1.40

#256

Atom x5-Z8300

MSRP: $20|Avg: N/A

425%

#257

Atom Z3735G

MSRP: $17|Avg: N/A

419%

#258

Core i5-480M

MSRP: $81|Avg: $77

385%

#259

Core i5-460M

MSRP: $80|Avg: $129

383%

#260

Core i5-2540M

MSRP: $266|Avg: $10

379%

#262

Core i5-450M

MSRP: $32|Avg: $31

366%

#263

Core i3-380M

MSRP: $49|Avg: $25

351%

#264

Core i5-430M

MSRP: N/A|Avg: $33

351%

#265

Core 2 Duo T6600

MSRP: N/A|Avg: $4

341%

#271

Pentium M 1.40

MSRP: N/A|Avg: N/A

100%

#274

Core 2 Extreme X9100

MSRP: $851|Avg: N/A

100%

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 Atom E3815 (2013) utilizes 22 nm technology and DDR3, providing a fundamental performance advantage.

Insight	Atom E3815	Pentium M 1.40
Gaming	✅ Superior gaming performance	❌ Lower gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	Equivalent pricing	Equivalent pricing
Longevity	🛑 Legacy (Bay Trail-I (2013) / 22 nm)	🛑 Legacy (Banias (2003) / 130 nm)

💎 Value Proposition

The Pentium M 1.40 (2003) relies on 130 nm technology and DDR1, DDR2, placing it in a different performance category relative to modern standards.

Insight	Atom E3815	Pentium M 1.40
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.

Atom E3815 Benchmark Check

Pentium M 1.40 Benchmark Check

Technical Specifications

Side-by-side comparison of Atom E3815 and Pentium M 1.40

Atom E3815

The Atom E3815 is manufactured by Intel. It was released in 8 October 2013 (12 years ago). It is based on the Bay Trail-I (2013) architecture. It features 1 cores and 1 threads. Max frequency: 1.47 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 22 nm process technology. Socket: FCBGA1170. Thermal design power (TDP): 512 kB. Memory support: DDR3. Passmark benchmark score: 365 points. Launch price was $134.

Pentium M 1.40

The Pentium M 1.40 is manufactured by Intel. It was released in 2007-01-01. It is based on the Banias (2003) architecture. It features 1 cores and 1 threads. Max frequency: 1.4 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 130 nm process technology. Socket: PGA478. Thermal design power (TDP): 24 Watt. Memory support: DDR1, DDR2. Passmark benchmark score: 345 points. Launch price was $69.

⚡

Processing Power

Both the Atom E3815 and Pentium M 1.40 share an identical 1-core/1-thread configuration. Boost clocks reach 1.47 GHz on the Atom E3815 versus 1.4 GHz on the Pentium M 1.40 — a 4.9% clock advantage for the Atom E3815. The Atom E3815 uses the Bay Trail-I (2013) architecture (22 nm), while the Pentium M 1.40 uses Banias (2003) (130 nm). In PassMark, the Atom E3815 scores 365 against the Pentium M 1.40's 345 — a 5.6% lead for the Atom E3815. Both processors carry 0 kB of L3 cache.

Feature	Atom E3815	Pentium M 1.40
Cores / Threads	1 / 1	1 / 1
Boost Clock	1.47 GHz+5%	1.4 GHz
L3 Cache	0 kB	0 kB
L2 Cache	512 kB (per core)	1 MB+100%
Process	22 nm-83%	130 nm
Architecture	Bay Trail-I (2013)	Banias (2003)
PassMark	365+6%	345

🧠

Memory & Platform

The Atom E3815 uses the FCBGA1170 socket (PCIe 2.0), while the Pentium M 1.40 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	Atom E3815	Pentium M 1.40
Socket	FCBGA1170	PGA478
PCIe Generation	PCIe 2.0+82%	PCIe 1.1
Max RAM Speed	DDR3L-1066	—
Max RAM Capacity	8 GB	—
RAM Channels	1	—
ECC Support	✅	—
PCIe Lanes	4	—