Core 2 Duo SL9400 vs Pentium 4405U

Core 2 Duo SL9400

2 Cores2 Thrd6 WWMax: 1.86 GHz2008

Pentium 4405U

2 Cores4 Thrd512 WWMax: 2.1 GHz2015

Performance Spectrum - CPU

Core 2 Duo SL9400

2 / 2

2,144

+1.0%

2,122

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 Core 2 Duo SL9400 is positioned at rank 1147 and the Pentium 4405U is on rank 528, so the Pentium 4405U 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 2 Duo SL9400

#1135

Atom x5-Z8300

MSRP: $20|Avg: N/A

3886%

#1136

Atom Z3735G

MSRP: $17|Avg: N/A

3829%

#1137

Core i5-480M

MSRP: $81|Avg: $77

3515%

#1138

Core i5-460M

MSRP: $80|Avg: $129

3499%

#1139

Core i5-2540M

MSRP: $266|Avg: $10

3467%

#1141

Core i5-450M

MSRP: $32|Avg: $31

3348%

#1142

Core i3-380M

MSRP: $49|Avg: $25

3211%

#1143

Core i5-430M

MSRP: N/A|Avg: $33

3205%

#1144

Core 2 Duo T6600

MSRP: N/A|Avg: $4

3119%

#1147

Core 2 Duo SL9400

MSRP: $284|Avg: N/A

100%

#1149

Pentium N3540

MSRP: $161|Avg: $161

99%

#1150

Core i7-3555LE

MSRP: $300|Avg: $280

99%

#1151

Core i3-2377M

MSRP: $250|Avg: N/A

98%

#1152

Core 2 Duo E8435

MSRP: $150|Avg: $74

97%

#1153

Celeron M 723

MSRP: $161|Avg: $161

97%

#1154

Core M-5Y51

MSRP: $281|Avg: $281

96%

#1155

Core i7-3517UE

MSRP: $330|Avg: $35

96%

#1156

Pentium N3530

MSRP: $161|Avg: $20

95%

#1157

Core i3-330E

MSRP: $177|Avg: $89

94%

#1159

Core i7-2640M

MSRP: $346|Avg: N/A

94%

#1160

Core M-5Y71

MSRP: $281|Avg: $281

93%

#1162

Core i7-2620M

MSRP: $346|Avg: N/A

93%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Pentium 4405U

#167

Core Ultra 7 258V

MSRP: $450|Avg: $400

99%

#169

Core i7-1280P

MSRP: $482|Avg: $482

98%

#516

Atom x5-Z8300

MSRP: $20|Avg: N/A

691%

#517

Atom Z3735G

MSRP: $17|Avg: N/A

681%

#518

Core i5-480M

MSRP: $81|Avg: $77

625%

#519

Core i5-460M

MSRP: $80|Avg: $129

623%

#520

Core i5-2540M

MSRP: $266|Avg: $10

617%

#522

Core i5-450M

MSRP: $32|Avg: $31

596%

#523

Core i3-380M

MSRP: $49|Avg: $25

571%

#524

Core i5-430M

MSRP: N/A|Avg: $33

570%

#525

Core 2 Duo T6600

MSRP: N/A|Avg: $4

555%

#528

Pentium 4405U

MSRP: N/A|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 Pentium 4405U (2015) utilizes 14 nm technology and DDR3, DDR4, providing a fundamental performance advantage.

Insight	Core 2 Duo SL9400	Pentium 4405U
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	⚠️ Higher cost ($284)	✅ More affordable ($0)
Longevity	🛑 Legacy (Penryn (2008−2011) / 45 nm)	🛑 Legacy (NetBurst (2000−2006) / 14 nm)

💎 Value Proposition

The Core 2 Duo SL9400 (2008) relies on 45 nm technology and older memory, placing it in a different performance category relative to modern standards.

Insight	Core 2 Duo SL9400	Pentium 4405U
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	⚠️ Higher cost ($284)	✅ More affordable ($0)

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 2 Duo SL9400 Benchmark Check

Pentium 4405U Benchmark Check

Technical Specifications

Side-by-side comparison of Core 2 Duo SL9400 and Pentium 4405U

Core 2 Duo SL9400

The Core 2 Duo SL9400 is manufactured by Intel. It was released in 20 August 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 1.86 GHz, with boost up to 1.86 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB. Built on 45 nm process technology. Socket: BGA956. Thermal design power (TDP): 17 Watt. Passmark benchmark score: 2,144 points. Launch price was $284.

Pentium 4405U

The Pentium 4405U is manufactured by Intel. It was released in 1 September 2015 (10 years ago). It is based on the NetBurst (2000−2006) architecture. It features 2 cores and 4 threads. Base frequency is 2.1 GHz, with boost up to 2.1 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 2,122 points. Launch price was $161.

⚡

Processing Power

The Core 2 Duo SL9400 packs 2 cores / 2 threads, matching the Pentium 4405U's 2 cores. Boost clocks reach 1.86 GHz on the Core 2 Duo SL9400 versus 2.1 GHz on the Pentium 4405U — a 12.1% clock advantage for the Pentium 4405U (base: 1.86 GHz vs 2.1 GHz). The Core 2 Duo SL9400 uses the Penryn (2008−2011) architecture (45 nm), while the Pentium 4405U uses NetBurst (2000−2006) (14 nm). In PassMark, the Core 2 Duo SL9400 scores 2,144 against the Pentium 4405U's 2,122 — a 1% lead for the Core 2 Duo SL9400. L3 cache: 6 MB L2 Cache on the Core 2 Duo SL9400 vs 2 MB on the Pentium 4405U.

Feature	Core 2 Duo SL9400	Pentium 4405U
Cores / Threads	2 / 2	2 / 4
Boost Clock	1.86 GHz	2.1 GHz+13%
Base Clock	1.86 GHz	2.1 GHz+13%
L3 Cache	6 MB L2 Cache+200%	2 MB
L2 Cache	6 MB+1100%	512 kB
Process	45 nm	14 nm-69%
Architecture	Penryn (2008−2011)	NetBurst (2000−2006)
PassMark	2,144+1%	2,122

🧠

Memory & Platform

The Core 2 Duo SL9400 uses the BGA956 socket (PCIe 1.1), while the Pentium 4405U uses BGA1356 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core 2 Duo SL9400	Pentium 4405U
Socket	BGA956	BGA1356
PCIe Generation	PCIe 1.1	PCIe 3.0+173%
Max RAM Speed	DDR3-1066	—
Max RAM Capacity	8 GB	—
RAM Channels	2	—
ECC Support	❌	—
PCIe Lanes	16	—