Celeron Dual-Core T3100 vs Core 2 Duo E6400

CPU

GPU

Celeron Dual-Core T3100

2 Cores2 Thrd1 WWMax: 1.9 GHz2009

Core 2 Duo E6400

2 Cores2 Thrd65 WWMax: 2.13 GHz2006

Performance Spectrum - CPU

Celeron Dual-Core T3100

2 / 2

1,174

0.0%

1,175

+0.1%

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 Dual-Core T3100 is positioned at rank 711 and the Core 2 Duo E6400 is on rank 1059, so the Celeron Dual-Core T3100 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 Dual-Core T3100

#699

Atom x5-Z8300

MSRP: $20|Avg: N/A

1000%

#700

Atom Z3735G

MSRP: $17|Avg: N/A

985%

#701

Core i5-480M

MSRP: $81|Avg: $77

904%

#702

Core i5-460M

MSRP: $80|Avg: $129

900%

#703

Core i5-2540M

MSRP: $266|Avg: $10

892%

#705

Core i5-450M

MSRP: $32|Avg: $31

861%

#706

Core i3-380M

MSRP: $49|Avg: $25

826%

#707

Core i5-430M

MSRP: N/A|Avg: $33

825%

#708

Core 2 Duo T6600

MSRP: N/A|Avg: $4

802%

#711

Celeron Dual-Core T3100

MSRP: N/A|Avg: N/A

100%

#712

Core i7-10850H

MSRP: $395|Avg: N/A

100%

#718

Core i3-1315UE

MSRP: $312|Avg: $250

98%

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

Performance Leadership: The Core 2 Duo E6400 delivers superior performance across the board. It outperforms the Celeron Dual-Core T3100 in both compute-intensive tasks (0.1% faster) and gaming workloads.

Insight	Celeron Dual-Core T3100	Core 2 Duo E6400
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	❌ Weaker in multi-core tasks	✅ Better multi-core power
Price	✅ More affordable ($0)	⚠️ Higher cost ($10)
Longevity	🛑 Legacy (Penryn (2008−2011) / 45 nm)	🛑 Legacy (Conroe (2006−2007) / 65 nm)

💎 Value Proposition

Insight	Celeron Dual-Core T3100	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 Dual-Core T3100 Benchmark Check

Core 2 Duo E6400 Benchmark Check

Technical Specifications

Side-by-side comparison of Celeron Dual-Core T3100 and Core 2 Duo E6400

Celeron Dual-Core T3100

The Celeron Dual-Core T3100 is manufactured by Intel. It was released in 2007-01-01. It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Max frequency: 1.9 GHz. L2 cache: 1 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 1 MB. Passmark benchmark score: 1,174 points. Launch price was $69.

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 Dual-Core T3100 and Core 2 Duo E6400 share an identical 2-core/2-thread configuration. Boost clocks reach 1.9 GHz on the Celeron Dual-Core T3100 versus 2.13 GHz on the Core 2 Duo E6400 — a 11.4% clock advantage for the Core 2 Duo E6400. The Celeron Dual-Core T3100 uses the Penryn (2008−2011) architecture (45 nm), while the Core 2 Duo E6400 uses Conroe (2006−2007) (65 nm). In PassMark, the Celeron Dual-Core T3100 scores 1,174 against the Core 2 Duo E6400's 1,175 — a 0.1% lead for the Core 2 Duo E6400.

Feature	Celeron Dual-Core T3100	Core 2 Duo E6400
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.9 GHz	2.13 GHz+12%
Base Clock	—	2.13 GHz
L3 Cache	—	0 kB
L2 Cache	1 MB	2 MB+100%
Process	45 nm-31%	65 nm
Architecture	Penryn (2008−2011)	Conroe (2006−2007)
PassMark	1,174	1,175

🧠

Memory & Platform

The Celeron Dual-Core T3100 uses the PGA478 socket (PCIe 1.1), while the Core 2 Duo E6400 uses LGA775 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-800 on the Celeron Dual-Core T3100 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. The Core 2 Duo E6400 supports up to 16 of RAM compared to 8 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Celeron Dual-Core T3100) vs 16 (Core 2 Duo E6400) — the Core 2 Duo E6400 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: GL40,GM45,GS45 (Celeron Dual-Core T3100) and P35,G31,G33,P45 (Core 2 Duo E6400).

Feature	Celeron Dual-Core T3100	Core 2 Duo E6400
Socket	PGA478	LGA775
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR3-800	1066+35433%
Max RAM Capacity	8 GB+52428700%	16
RAM Channels	2	2
ECC Support	❌	❌
PCIe Lanes	0	16

🔧

Advanced Features

Neither processor supports overclocking. Virtualization support: No (Celeron Dual-Core T3100) vs true (Core 2 Duo E6400). Primary use case: Celeron Dual-Core T3100 targets Budget. Direct competitor: Celeron Dual-Core T3100 rivals Pentium T4200; Core 2 Duo E6400 rivals Athlon 64 X2 5400+.