Pentium G645 vs Celeron 3867U

Pentium G645

2 Cores2 Thrd65 WWMax: 2.9 GHz2012

Celeron 3867U

2 Cores2 Thrd512 WWMax: 1.8 GHz2019

Performance Spectrum - CPU

Pentium G645

2 / 2

1,450

+0.1%

1,449

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 Pentium G645 is positioned at rank 838 and the Celeron 3867U is on rank 132, so the Celeron 3867U 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 Pentium G645

Ryzen 9 7950X

MSRP: $194|Avg: $20

17193%

Core i9-10900T

MSRP: $120|Avg: $5

16246%

Ryzen 3 PRO 4355GE

MSRP: $423|Avg: $5

11796%

Ryzen Threadripper 3960X

MSRP: $1399|Avg: $85

3554%

Ryzen 9 9950X

MSRP: $649|Avg: $129

2815%

Ryzen 5 8400F

MSRP: $303|Avg: $55

2462%

Ryzen 7 PRO 2700

MSRP: $299|Avg: $60

1410%

Ryzen 5 2600X

MSRP: $229|Avg: $55

1392%

Ryzen 3 PRO 5350G

MSRP: $150|Avg: $60

1267%

#10

Core Ultra 5 245KF

MSRP: $294|Avg: $189

1267%

#11

Ryzen 5 5500

MSRP: $159|Avg: $85

1253%

#12

Ryzen 5 3600

MSRP: $199|Avg: $80

1219%

#13

Core i3-9100E

MSRP: $202|Avg: $30

1202%

#14

Core Ultra 5 245K

MSRP: $319|Avg: $200

1197%

#15

Core i3-8300T

MSRP: $138|Avg: $25

1187%

#838

Pentium G645

MSRP: $80|Avg: $15

100%

#839

Pentium G630

MSRP: $75|Avg: $46

100%

#840

Core i5-2550K

MSRP: $235|Avg: $46

99%

#841

Athlon II X4 600e

MSRP: $100|Avg: $20

99%

#842

Core i7-4785T

MSRP: $306|Avg: $32

99%

#843

Core i5-6442EQ

MSRP: $250|Avg: $250

99%

#844

Core i5-4690S

MSRP: $306|Avg: $189

99%

#845

Core i3-3250

MSRP: $138|Avg: $40

98%

#846

Core i3-3240

MSRP: $132|Avg: $15

98%

#847

Pentium G640T

MSRP: $64|Avg: $69

98%

#848

Core i7-5930K

MSRP: $583|Avg: $410

98%

#850

Core i3-3240T

MSRP: $117|Avg: $8

98%

#851

Athlon II X2 240

MSRP: $60|Avg: $10

97%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Celeron 3867U

#36

Core i5-11500B

MSRP: $185|Avg: $185

96%

#120

Atom x5-Z8300

MSRP: $20|Avg: N/A

304%

#121

Atom Z3735G

MSRP: $17|Avg: N/A

299%

#122

Core i5-480M

MSRP: $81|Avg: $77

275%

#123

Core i5-460M

MSRP: $80|Avg: $129

273%

#124

Core i5-2540M

MSRP: $266|Avg: $10

271%

#126

Core i5-450M

MSRP: $32|Avg: $31

262%

#127

Core i3-380M

MSRP: $49|Avg: $25

251%

#128

Core i5-430M

MSRP: N/A|Avg: $33

251%

#129

Core 2 Duo T6600

MSRP: N/A|Avg: $4

244%

#132

Celeron 3867U

MSRP: N/A|Avg: N/A

100%

#137

N200

MSRP: $193|Avg: N/A

98%

#138

Core 2 Duo SP9600

MSRP: $316|Avg: N/A

98%

#140

Core 2 Duo P8700

MSRP: $241|Avg: $85

97%

#147

Atom N2800

MSRP: $47|Avg: $3

95%

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 3867U (2019) utilizes 14 nm technology and DDR3, DDR4, providing a fundamental performance advantage.

Insight	Pentium G645	Celeron 3867U
Gaming	✅ Superior gaming performance	❌ Lower gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	⚠️ Higher cost ($15)	✅ More affordable ($0)
Longevity	🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm)	✨ Modern (Kaby Lake (2016−2019) / 14 nm)

💎 Value Proposition

The Pentium G645 (2012) relies on 32 nm technology and DDR3, placing it in a different performance category relative to modern standards.

Insight	Pentium G645	Celeron 3867U
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	⚠️ Higher cost ($15)	✅ More affordable ($0)

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.

Pentium G645 Benchmark Check

Celeron 3867U Benchmark Check

Technical Specifications

Side-by-side comparison of Pentium G645 and Celeron 3867U

Pentium G645

The Pentium G645 is manufactured by Intel. It was released in 2 September 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.9 GHz, with boost up to 2.9 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,450 points. Launch price was $80.

Celeron 3867U

The Celeron 3867U is manufactured by Intel. It was released in 1 March 2019 (6 years ago). It is based on the Kaby Lake (2016−2019) 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. L2 cache: 512 kB. Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 1,449 points. Launch price was $107.

⚡

Processing Power

Both the Pentium G645 and Celeron 3867U share an identical 2-core/2-thread configuration. Boost clocks reach 2.9 GHz on the Pentium G645 versus 1.8 GHz on the Celeron 3867U — a 46.8% clock advantage for the Pentium G645 (base: 2.9 GHz vs 1.8 GHz). The Pentium G645 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Celeron 3867U uses Kaby Lake (2016−2019) (14 nm). In PassMark, the Pentium G645 scores 1,450 against the Celeron 3867U's 1,449 — a 0.1% lead for the Pentium G645. L3 cache: 3 MB (total) on the Pentium G645 vs 2 MB on the Celeron 3867U.

Feature	Pentium G645	Celeron 3867U
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.9 GHz+61%	1.8 GHz
Base Clock	2.9 GHz+61%	1.8 GHz
L3 Cache	3 MB (total)+50%	2 MB
L2 Cache	256 kB (per core)	512 kB+100%
Process	32 nm	14 nm-56%
Architecture	Sandy Bridge (2011−2013)	Kaby Lake (2016−2019)
PassMark	1,450	1,449

🧠

Memory & Platform

The Pentium G645 uses the LGA1155 socket (PCIe 2.0), while the Celeron 3867U uses BGA1356 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Pentium G645	Celeron 3867U
Socket	LGA1155	BGA1356
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	—	DDR4-2133
Max RAM Capacity	—	32 GB
RAM Channels	—	2
ECC Support	—	❌
PCIe Lanes	—	12

🔧

Advanced Features

Virtualization: not specified (Pentium G645) / VT-x, VT-d (Celeron 3867U). The Celeron 3867U includes integrated graphics (HD Graphics 610), while the Pentium G645 requires a dedicated GPU. Primary use case: Celeron 3867U targets Budget. Direct competitor: Celeron 3867U rivals Pentium Gold 4417U.