Celeron 3865U vs Core 2 Duo U7700

CPU

GPU

Celeron 3865U

2 Cores2 Thrd15 WWMax: 1.8 GHz2017

Core 2 Duo U7700

2 Cores2 Thrd2 WWMax: 1.33 GHz2006

Performance Spectrum - CPU

Celeron 3865U

2 / 2

1,343

+0.6%

1,335

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 Celeron 3865U is positioned at rank 645 and the Core 2 Duo U7700 is on rank 1203, so the Celeron 3865U 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 3865U

#633

Atom x5-Z8300

MSRP: $20|Avg: N/A

874%

#634

Atom Z3735G

MSRP: $17|Avg: N/A

861%

#635

Core i5-480M

MSRP: $81|Avg: $77

790%

#636

Core i5-460M

MSRP: $80|Avg: $129

787%

#637

Core i5-2540M

MSRP: $266|Avg: $10

780%

#639

Core i5-450M

MSRP: $32|Avg: $31

753%

#640

Core i3-380M

MSRP: $49|Avg: $25

722%

#641

Core i5-430M

MSRP: N/A|Avg: $33

721%

#642

Core 2 Duo T6600

MSRP: N/A|Avg: $4

701%

#645

Celeron 3865U

MSRP: N/A|Avg: N/A

100%

#650

Core i5-1345UE

MSRP: $312|Avg: $312

99%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Core 2 Duo U7700

#1190

Atom x5-Z8300

MSRP: $20|Avg: N/A

5753%

#1191

Atom Z3735G

MSRP: $17|Avg: N/A

5669%

#1192

Core i5-480M

MSRP: $81|Avg: $77

5204%

#1193

Core i5-460M

MSRP: $80|Avg: $129

5180%

#1194

Core i5-2540M

MSRP: $266|Avg: $10

5133%

#1196

Core i5-450M

MSRP: $32|Avg: $31

4957%

#1197

Core i3-380M

MSRP: $49|Avg: $25

4753%

#1198

Core i5-430M

MSRP: N/A|Avg: $33

4745%

#1199

Core 2 Duo T6600

MSRP: N/A|Avg: $4

4618%

#1202

Core 2 Duo E8135

MSRP: $200|Avg: $15

100%

#1203

Core 2 Duo U7700

MSRP: $262|Avg: $10

100%

#1204

Core Duo T2400

MSRP: $294|Avg: N/A

99%

#1205

Core 2 Duo U7600

MSRP: $250|Avg: $5

99%

#1206

Pentium M 735

MSRP: $294|Avg: N/A

97%

#1207

Core i7-620LM

MSRP: $300|Avg: N/A

96%

#1208

Core i7-740QM

MSRP: $378|Avg: N/A

95%

#1210

Core 2 Solo SU3300

MSRP: $262|Avg: $50

93%

#1211

Celeron 540

MSRP: $86|Avg: $5

93%

#1212

Celeron U3600

MSRP: $134|Avg: $134

91%

#1215

Core 2 Quad Q9000

MSRP: $348|Avg: $15

90%

#1216

Core i5-2537M

MSRP: $250|Avg: N/A

90%

#1217

Core i7-720QM

MSRP: $364|Avg: N/A

89%

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 3865U (2017) utilizes 14 nm technology and DDR3, DDR4, providing a fundamental performance advantage.

Insight	Celeron 3865U	Core 2 Duo U7700
Gaming	✅ Superior gaming performance	❌ Lower gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	✅ More affordable ($0)	⚠️ Higher cost ($10)
Longevity	✨ Modern (Kaby Lake-U (2017) / 14 nm)	🛑 Legacy (Merom-2048 (2006−2008) / 65 nm)

💎 Value Proposition

The Core 2 Duo U7700 (2006) relies on 65 nm technology and older memory, placing it in a different performance category relative to modern standards.

Insight	Celeron 3865U	Core 2 Duo U7700
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	✅ More affordable ($0)	⚠️ Higher cost ($10)

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 3865U Benchmark Check

Core 2 Duo U7700 Benchmark Check

Technical Specifications

Side-by-side comparison of Celeron 3865U and Core 2 Duo U7700

Celeron 3865U

The Celeron 3865U is manufactured by Intel. It was released in 3 January 2017 (8 years ago). It is based on the Kaby Lake-U (2017) architecture. It features 2 cores and 2 threads. Base frequency is 1.8 GHz, with boost up to 1.8 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 1,343 points. Launch price was $107.

Core 2 Duo U7700

The Core 2 Duo U7700 is manufactured by Intel. It was released in 2008-01-01. It is based on the Merom-2048 (2006−2008) architecture. It features 2 cores and 2 threads. Base frequency is 1.33 GHz, with boost up to 1.33 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 65 nm process technology. Socket: P. Thermal design power (TDP): 10 Watt. Passmark benchmark score: 1,335 points. Launch price was $249.

⚡

Processing Power

Both the Celeron 3865U and Core 2 Duo U7700 share an identical 2-core/2-thread configuration. Boost clocks reach 1.8 GHz on the Celeron 3865U versus 1.33 GHz on the Core 2 Duo U7700 — a 30% clock advantage for the Celeron 3865U (base: 1.8 GHz vs 1.33 GHz). The Celeron 3865U uses the Kaby Lake-U (2017) architecture (14 nm), while the Core 2 Duo U7700 uses Merom-2048 (2006−2008) (65 nm). In PassMark, the Celeron 3865U scores 1,343 against the Core 2 Duo U7700's 1,335 — a 0.6% lead for the Celeron 3865U. L3 cache: 2 MB (total) on the Celeron 3865U vs 0 kB on the Core 2 Duo U7700.

Feature	Celeron 3865U	Core 2 Duo U7700
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.8 GHz+35%	1.33 GHz
Base Clock	1.8 GHz+35%	1.33 GHz
L3 Cache	2 MB (total)	0 kB
L2 Cache	256K (per core)	2 MB+700%
Process	14 nm-78%	65 nm
Architecture	Kaby Lake-U (2017)	Merom-2048 (2006−2008)
PassMark	1,343	1,335
Geekbench 6 Single	389	—
Geekbench 6 Multi	674	—

🧠

Memory & Platform

The Celeron 3865U uses the BGA1356 socket (PCIe 3.0), while the Core 2 Duo U7700 uses P (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	Celeron 3865U	Core 2 Duo U7700
Socket	BGA1356	P
PCIe Generation	PCIe 3.0+173%	PCIe 1.1
Max RAM Speed	DDR4-2133 / LPDDR3-1866	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	❌	—
PCIe Lanes	10	—

🔧

Advanced Features

Virtualization: VT-x / VT-d / EPT (Celeron 3865U) / not specified (Core 2 Duo U7700). The Celeron 3865U includes integrated graphics (Intel HD Graphics 610), while the Core 2 Duo U7700 requires a dedicated GPU. Primary use case: Celeron 3865U targets Entry-level. Direct competitor: Celeron 3865U rivals Pentium Gold 4415U.