Core 2 Duo T6400 vs Celeron M 900

Core 2 Duo T6400

2 Cores2 Thrd2 WWMax: 2 GHz2009

Celeron M 900

1 Cores1 Thrd1 WWMax: 2.2 GHz2009

Performance Spectrum - CPU

Core 2 Duo T6400

2 / 2

2,115

+0.7%

2,101

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 T6400 is positioned at rank 49 and the Celeron M 900 is on rank 797, so the Core 2 Duo T6400 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 T6400

#13

Ryzen 3 210

MSRP: $99|Avg: $99

95%

#37

Atom x5-Z8300

MSRP: $20|Avg: N/A

208%

#38

Atom Z3735G

MSRP: $17|Avg: N/A

205%

#39

Core i5-480M

MSRP: $81|Avg: $77

188%

#40

Core i5-460M

MSRP: $80|Avg: $129

187%

#41

Core i5-2540M

MSRP: $266|Avg: $10

186%

#43

Core i5-450M

MSRP: $32|Avg: $31

179%

#44

Core i3-380M

MSRP: $49|Avg: $25

172%

#45

Core i5-430M

MSRP: N/A|Avg: $33

172%

#46

Core 2 Duo T6600

MSRP: N/A|Avg: $4

167%

#49

Core 2 Duo T6400

MSRP: N/A|Avg: N/A

100%

#51

Celeron N2807

MSRP: $107|Avg: $60

99%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Celeron M 900

#785

Atom x5-Z8300

MSRP: $20|Avg: N/A

1201%

#786

Atom Z3735G

MSRP: $17|Avg: N/A

1183%

#787

Core i5-480M

MSRP: $81|Avg: $77

1086%

#788

Core i5-460M

MSRP: $80|Avg: $129

1081%

#789

Core i5-2540M

MSRP: $266|Avg: $10

1072%

#791

Core i5-450M

MSRP: $32|Avg: $31

1035%

#792

Core i3-380M

MSRP: $49|Avg: $25

992%

#793

Core i5-430M

MSRP: N/A|Avg: $33

991%

#794

Core 2 Duo T6600

MSRP: N/A|Avg: $4

964%

#797

Celeron M 900

MSRP: $86|Avg: $10

100%

#799

Celeron B815

MSRP: $86|Avg: $15

100%

#801

Celeron B810

MSRP: $86|Avg: $86

100%

#803

Core i7-1365UE

MSRP: $429|Avg: $429

99%

#805

3020e

MSRP: $100|Avg: $25

98%

#809

Athlon II M320

MSRP: $75|Avg: $15

98%

#810

Celeron B800

MSRP: $80|Avg: $5

98%

#811

Celeron B710

MSRP: $86|Avg: $10

98%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Performance Trade-off: The Celeron M 900 leads in gaming performance. However, the Core 2 Duo T6400 is the stronger candidate for professional workloads, offering 0.7% greater multi-core processing power.

Insight	Core 2 Duo T6400	Celeron M 900
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 (Penryn (2008−2011) / 45 nm)	🛑 Legacy (Penryn (2008−2011) / 45 nm)

💎 Value Proposition

Insight	Core 2 Duo T6400	Celeron M 900
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.

Core 2 Duo T6400 Benchmark Check

Celeron M 900 Benchmark Check

Technical Specifications

Side-by-side comparison of Core 2 Duo T6400 and Celeron M 900

Core 2 Duo T6400

The Core 2 Duo T6400 is manufactured by Intel. It was released in 2008-01-01. It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 2 MB L2 Cache. L2 cache: 2 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 2,115 points. Launch price was $249.

Celeron M 900

The Celeron M 900 is manufactured by Intel. It was released in 1 April 2009 (16 years ago). It is based on the Penryn (2008−2011) architecture. It features 1 cores and 1 threads. Max frequency: 2.2 GHz. L2 cache: 1 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 1 MB. Passmark benchmark score: 2,101 points. Launch price was $70.

⚡

Processing Power

The Core 2 Duo T6400 packs 2 cores / 2 threads, while the Celeron M 900 offers 1 cores / 1 threads — the Core 2 Duo T6400 has 1 more core. Boost clocks reach 2 GHz on the Core 2 Duo T6400 versus 2.2 GHz on the Celeron M 900 — a 9.5% clock advantage for the Celeron M 900. Both are built on the Penryn (2008−2011) architecture using a 45 nm process. In PassMark, the Core 2 Duo T6400 scores 2,115 against the Celeron M 900's 2,101 — a 0.7% lead for the Core 2 Duo T6400.

Feature	Core 2 Duo T6400	Celeron M 900
Cores / Threads	2 / 2+100%	1 / 1
Boost Clock	2 GHz	2.2 GHz+10%
Base Clock	2 GHz	—
L3 Cache	2 MB L2 Cache	—
L2 Cache	2 MB+100%	1 MB
Process	45 nm	45 nm
Architecture	Penryn (2008−2011)	Penryn (2008−2011)
PassMark	2,115	2,101
Geekbench 6 Single	650	—
Geekbench 6 Multi	1,300	—