Celeron 3755U vs Core 2 Duo E6400

Celeron 3755U

2 Cores2 Thrd15 WWMax: 1.7 GHz2015

Core 2 Duo E6400

2 Cores2 Thrd65 WWMax: 2.13 GHz2006

Performance Spectrum - CPU

Celeron 3755U

2 / 2

1,182

+0.6%

1,175

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 3755U is positioned at rank 348 and the Core 2 Duo E6400 is on rank 1059, so the Celeron 3755U 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 3755U

#101

Core i5-1350P

MSRP: $320|Avg: $250

99%

#102

Core i3-1220P

MSRP: $250|Avg: $150

98%

#107

Core Ultra 5 228V

MSRP: $295|Avg: $295

97%

#336

Atom x5-Z8300

MSRP: $20|Avg: N/A

496%

#337

Atom Z3735G

MSRP: $17|Avg: N/A

489%

#338

Core i5-480M

MSRP: $81|Avg: $77

449%

#339

Core i5-460M

MSRP: $80|Avg: $129

447%

#340

Core i5-2540M

MSRP: $266|Avg: $10

443%

#342

Core i5-450M

MSRP: $32|Avg: $31

428%

#343

Core i3-380M

MSRP: $49|Avg: $25

410%

#344

Core i5-430M

MSRP: N/A|Avg: $33

409%

#345

Core 2 Duo T6600

MSRP: N/A|Avg: $4

398%

#348

Celeron 3755U

MSRP: N/A|Avg: N/A

100%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Core 2 Duo E6400

Ryzen 9 7950X

MSRP: $194|Avg: $20

48554%

Core i9-10900T

MSRP: $120|Avg: $5

45879%

Ryzen 3 PRO 4355GE

MSRP: $423|Avg: $5

33312%

Ryzen Threadripper 3960X

MSRP: $1399|Avg: $85

10035%

Ryzen 9 9950X

MSRP: $649|Avg: $129

7949%

Ryzen 5 8400F

MSRP: $303|Avg: $55

6954%

Ryzen 7 PRO 2700

MSRP: $299|Avg: $60

3983%

Ryzen 5 2600X

MSRP: $229|Avg: $55

3931%

Ryzen 3 PRO 5350G

MSRP: $150|Avg: $60

3579%

#10

Core Ultra 5 245KF

MSRP: $294|Avg: $189

3579%

#11

Ryzen 5 5500

MSRP: $159|Avg: $85

3539%

#12

Ryzen 5 3600

MSRP: $199|Avg: $80

3443%

#13

Core i3-9100E

MSRP: $202|Avg: $30

3395%

#14

Core Ultra 5 245K

MSRP: $319|Avg: $200

3381%

#15

Core i3-8300T

MSRP: $138|Avg: $25

3351%

#1059

Core 2 Duo E6400

MSRP: $183|Avg: $10

100%

#1060

Core 2 Duo E8300

MSRP: $163|Avg: $20

99%

#1061

Phenom X4 9500

MSRP: $247|Avg: $30

99%

#1062

Celeron D 352

MSRP: $69|Avg: $15

94%

#1063

Core i7-970

MSRP: $1083|Avg: $289

94%

#1064

Core i7-880

MSRP: $583|Avg: $40

92%

#1065

Pentium D 820

MSRP: $241|Avg: $20

91%

#1066

Celeron 2.10

MSRP: $49|Avg: $49

91%

#1067

Core i7-950

MSRP: $562|Avg: $15

90%

#1068

Sempron 3100+

MSRP: $65|Avg: $15

89%

#1069

Core 2 Duo E6750

MSRP: $183|Avg: $15

88%

#1070

Athlon II X4 635

MSRP: $400|Avg: $250

88%

#1071

Core i7-940

MSRP: $562|Avg: $90

84%

#1072

Celeron 2.40

MSRP: $69|Avg: $13

78%

#1073

Sempron 2800+

MSRP: $65|Avg: $29

77%

#1074

Athlon 64 3100+

MSRP: $100|Avg: $15

74%

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 3755U (2015) utilizes 14 nm technology and DDR3, providing a fundamental performance advantage.

Insight	Celeron 3755U	Core 2 Duo E6400
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	✅ More affordable ($0)	⚠️ Higher cost ($10)
Longevity	🛑 Legacy (Broadwell-U (2015) / 14 nm)	🛑 Legacy (Conroe (2006−2007) / 65 nm)

💎 Value Proposition

The Core 2 Duo E6400 (2006) relies on 65 nm technology and DDR1, DDR2, DDR3, placing it in a different performance category relative to modern standards.

Insight	Celeron 3755U	Core 2 Duo E6400
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 3755U Benchmark Check

Core 2 Duo E6400 Benchmark Check

Technical Specifications

Side-by-side comparison of Celeron 3755U and Core 2 Duo E6400

Celeron 3755U

The Celeron 3755U is manufactured by Intel. It was released in 1 March 2015 (10 years ago). It is based on the Broadwell-U (2015) architecture. It features 2 cores and 2 threads. Base frequency is 1.7 GHz, with boost up to 1.7 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,182 points. Launch price was $107.

Core 2 Duo E6400

The Core 2 Duo E6400 is manufactured by Intel. It was released in 2008-01-01. It is based on the Conroe (2006−2007) architecture. It features 2 cores and 2 threads. Base frequency is 2.13 GHz, with boost up to 2.13 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,175 points. Launch price was $249.

⚡

Processing Power

Both the Celeron 3755U and Core 2 Duo E6400 share an identical 2-core/2-thread configuration. Boost clocks reach 1.7 GHz on the Celeron 3755U versus 2.13 GHz on the Core 2 Duo E6400 — a 22.5% clock advantage for the Core 2 Duo E6400 (base: 1.7 GHz vs 2.13 GHz). The Celeron 3755U uses the Broadwell-U (2015) architecture (14 nm), while the Core 2 Duo E6400 uses Conroe (2006−2007) (65 nm). In PassMark, the Celeron 3755U scores 1,182 against the Core 2 Duo E6400's 1,175 — a 0.6% lead for the Celeron 3755U. L3 cache: 2 MB (total) on the Celeron 3755U vs 0 kB on the Core 2 Duo E6400.

Feature	Celeron 3755U	Core 2 Duo E6400
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.7 GHz	2.13 GHz+25%
Base Clock	1.7 GHz	2.13 GHz+25%
L3 Cache	2 MB (total)	0 kB
L2 Cache	256K (per core)	2 MB+700%
Process	14 nm-78%	65 nm
Architecture	Broadwell-U (2015)	Conroe (2006−2007)
PassMark	1,182	1,175
Geekbench 6 Multi	625	—

🧠

Memory & Platform

The Celeron 3755U uses the FCBGA1168 socket (PCIe 3.0), while the Core 2 Duo E6400 uses LGA775 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3L-1600 on the Celeron 3755U versus 1066 on the Core 2 Duo E6400 — the Core 2 Duo E6400 supports 198.9% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 16 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 12 (Celeron 3755U) vs 16 (Core 2 Duo E6400) — the Core 2 Duo E6400 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Wildcat Point-LP (Celeron 3755U) and P35,G31,G33,P45 (Core 2 Duo E6400).

Feature	Celeron 3755U	Core 2 Duo E6400
Socket	FCBGA1168	LGA775
PCIe Generation	PCIe 3.0+173%	PCIe 1.1
Max RAM Speed	DDR3L-1600	1066+35433%
Max RAM Capacity	16 GB+104857500%	16
RAM Channels	2	2
ECC Support	❌	❌
PCIe Lanes	12	16+33%

🔧

Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x, VT-d (Celeron 3755U) vs true (Core 2 Duo E6400). The Celeron 3755U includes integrated graphics (HD Graphics (Broadwell)), while the Core 2 Duo E6400 requires a dedicated GPU. Primary use case: Celeron 3755U targets Budget. Direct competitor: Celeron 3755U rivals Pentium 3825U; Core 2 Duo E6400 rivals Athlon 64 X2 5400+.