Core 2 Duo T9900 vs Pentium 3805U

Core 2 Duo T9900

2 Cores2 Thrd35 WWMax: 0.07 GHz2009

Pentium 3805U

2 Cores2 Thrd512 WWMax: 1.9 GHz2015

Performance Spectrum - CPU

Core 2 Duo T9900

2 / 2

1,204

+0.7%

Celeron E1200

Celeron 877

Pentium Dual-Core E2180

1,196

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 T9900 is positioned at rank 635 and the Pentium 3805U is on rank 344, so the Pentium 3805U 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 T9900

#187

Core Ultra 9 288V

MSRP: $600|Avg: $600

98%

#188

Core i7-10870H

MSRP: $417|Avg: N/A

98%

#623

Atom x5-Z8300

MSRP: $20|Avg: N/A

853%

#624

Atom Z3735G

MSRP: $17|Avg: N/A

840%

#625

Core i5-480M

MSRP: $81|Avg: $77

772%

#626

Core i5-460M

MSRP: $80|Avg: $129

768%

#627

Core i5-2540M

MSRP: $266|Avg: $10

761%

#629

Core i5-450M

MSRP: $32|Avg: $31

735%

#630

Core i3-380M

MSRP: $49|Avg: $25

705%

#631

Core i5-430M

MSRP: N/A|Avg: $33

703%

#632

Core 2 Duo T6600

MSRP: N/A|Avg: $4

685%

#635

Core 2 Duo T9900

MSRP: N/A|Avg: N/A

100%

#638

Celeron Dual-Core T1400

MSRP: $80|Avg: $10

99%

#650

Core i5-1345UE

MSRP: $312|Avg: $312

96%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Pentium 3805U

#101

Core i5-1350P

MSRP: $320|Avg: $250

98%

#102

Core i3-1220P

MSRP: $250|Avg: $150

97%

#332

Atom x5-Z8300

MSRP: $20|Avg: N/A

491%

#333

Atom Z3735G

MSRP: $17|Avg: N/A

483%

#334

Core i5-480M

MSRP: $81|Avg: $77

444%

#335

Core i5-460M

MSRP: $80|Avg: $129

442%

#336

Core i5-2540M

MSRP: $266|Avg: $10

438%

#338

Core i5-450M

MSRP: $32|Avg: $31

423%

#339

Core i3-380M

MSRP: $49|Avg: $25

405%

#340

Core i5-430M

MSRP: N/A|Avg: $33

405%

#341

Core 2 Duo T6600

MSRP: N/A|Avg: $4

394%

#344

Pentium 3805U

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 3805U (2015) utilizes 14 nm technology and DDR3, providing a fundamental performance advantage.

Insight	Core 2 Duo T9900	Pentium 3805U
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	Equivalent pricing	Equivalent pricing
Longevity	🛑 Legacy (Penryn (2008−2011) / 45 nm)	🛑 Legacy (Broadwell-U (2015) / 14 nm)

💎 Value Proposition

The Core 2 Duo T9900 (2009) relies on 45 nm technology and DDR2, DDR3, placing it in a different performance category relative to modern standards.

Insight	Core 2 Duo T9900	Pentium 3805U
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	Equivalent pricing	Equivalent pricing

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 T9900 Benchmark Check

Pentium 3805U Benchmark Check

Technical Specifications

Side-by-side comparison of Core 2 Duo T9900 and Pentium 3805U

Core 2 Duo T9900

The Core 2 Duo T9900 is manufactured by Intel. It was released in 2 June 2009 (16 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 3.06 GHz, with boost up to 0.07 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Memory support: DDR2, DDR3. Passmark benchmark score: 1,204 points. Launch price was $530.

Pentium 3805U

The Pentium 3805U 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 1.9 GHz, with boost up to 1.9 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: 1,196 points. Launch price was $161.

⚡

Processing Power

Both the Core 2 Duo T9900 and Pentium 3805U share an identical 2-core/2-thread configuration. Boost clocks reach 0.07 GHz on the Core 2 Duo T9900 versus 1.9 GHz on the Pentium 3805U — a 185.8% clock advantage for the Pentium 3805U (base: 3.06 GHz vs 1.9 GHz). The Core 2 Duo T9900 uses the Penryn (2008−2011) architecture (45 nm), while the Pentium 3805U uses Broadwell-U (2015) (14 nm). In PassMark, the Core 2 Duo T9900 scores 1,204 against the Pentium 3805U's 1,196 — a 0.7% lead for the Core 2 Duo T9900. L3 cache: 6 MB L2 Cache on the Core 2 Duo T9900 vs 2 MB (total) on the Pentium 3805U.

Feature	Core 2 Duo T9900	Pentium 3805U
Cores / Threads	2 / 2	2 / 2
Boost Clock	0.07 GHz	1.9 GHz+2614%
Base Clock	3.06 GHz+61%	1.9 GHz
L3 Cache	6 MB L2 Cache+200%	2 MB (total)
L2 Cache	6 MB (total)+2300%	256K (per core)
Process	45 nm	14 nm-69%
Architecture	Penryn (2008−2011)	Broadwell-U (2015)
PassMark	1,204	1,196

🧠

Memory & Platform

The Core 2 Duo T9900 uses the PGA478 socket (PCIe 1.1), while the Pentium 3805U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core 2 Duo T9900	Pentium 3805U
Socket	PGA478	FCBGA1168
PCIe Generation	PCIe 1.1	PCIe 3.0+173%
Max RAM Speed	—	DDR3L-1600
Max RAM Capacity	—	16 GB
RAM Channels	—	2
ECC Support	—	❌
PCIe Lanes	—	12

🔧

Advanced Features

Virtualization: not specified (Core 2 Duo T9900) / VT-x, VT-d (Pentium 3805U). The Pentium 3805U includes integrated graphics (HD Graphics (Broadwell)), while the Core 2 Duo T9900 requires a dedicated GPU. Primary use case: Pentium 3805U targets Mobile.