Core i7-4650U vs Core 2 Duo P8400

Core i7-4650U

2 Cores4 Thrd512 WWMax: 3.3 GHz2013

Core 2 Duo P8400

2 Cores2 Thrd3 WWMax: 2.26 GHz2008

Performance Spectrum - CPU

Core i7-4650U

2 / 4

2,463

0.0%

2,497

+1.4%

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 i7-4650U is positioned at rank 793 and the Core 2 Duo P8400 is on rank 33, so the Core 2 Duo P8400 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 i7-4650U

#781

Atom x5-Z8300

MSRP: $20|Avg: N/A

1191%

#782

Atom Z3735G

MSRP: $17|Avg: N/A

1174%

#783

Core i5-480M

MSRP: $81|Avg: $77

1078%

#784

Core i5-460M

MSRP: $80|Avg: $129

1073%

#785

Core i5-2540M

MSRP: $266|Avg: $10

1063%

#787

Core i5-450M

MSRP: $32|Avg: $31

1026%

#788

Core i3-380M

MSRP: $49|Avg: $25

984%

#789

Core i5-430M

MSRP: N/A|Avg: $33

983%

#790

Core 2 Duo T6600

MSRP: N/A|Avg: $4

956%

#793

Core i7-4650U

MSRP: N/A|Avg: N/A

100%

#795

Core i3-1115G4E

MSRP: $213|Avg: $47

100%

#797

Celeron M 900

MSRP: $86|Avg: $10

99%

#799

Celeron B815

MSRP: $86|Avg: $15

99%

#801

Celeron B810

MSRP: $86|Avg: $86

99%

#803

Core i7-1365UE

MSRP: $429|Avg: $429

98%

#805

3020e

MSRP: $100|Avg: $25

98%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Core 2 Duo P8400

#10

Ryzen 7 260

MSRP: $199|Avg: $70

86%

#21

Atom x5-Z8300

MSRP: $20|Avg: N/A

176%

#22

Atom Z3735G

MSRP: $17|Avg: N/A

174%

#23

Core i5-480M

MSRP: $81|Avg: $77

159%

#24

Core i5-460M

MSRP: $80|Avg: $129

159%

#25

Core i5-2540M

MSRP: $266|Avg: $10

157%

#27

Core i5-450M

MSRP: $32|Avg: $31

152%

#28

Core i3-380M

MSRP: $49|Avg: $25

146%

#29

Core i5-430M

MSRP: N/A|Avg: $33

145%

#30

Core 2 Duo T6600

MSRP: N/A|Avg: $4

141%

#33

Core 2 Duo P8400

MSRP: $209|Avg: $10

100%

#38

Core 2 Duo T8100

MSRP: $209|Avg: $10

93%

#39

Atom 330

MSRP: $43|Avg: $30

92%

#43

Core 2 Duo SU7300

MSRP: $289|Avg: N/A

90%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Performance Trade-off: The Core i7-4650U leads in gaming performance. However, the Core 2 Duo P8400 is the stronger candidate for professional workloads, offering 1.4% greater multi-core processing power.

Insight	Core i7-4650U	Core 2 Duo P8400
Gaming	✅ Superior gaming performance	❌ Lower gaming performance
Workstation	❌ Weaker in multi-core tasks	✅ Better multi-core power
Price	✅ More affordable ($0)	⚠️ Higher cost ($10)
Longevity	🛑 Legacy (Haswell-ULT (2013) / 22 nm)	🛑 Legacy (Penryn (2008−2011) / 45 nm)

💎 Value Proposition

Insight	Core i7-4650U	Core 2 Duo P8400
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 i7-4650U Benchmark Check

Core 2 Duo P8400 Benchmark Check

Technical Specifications

Side-by-side comparison of Core i7-4650U and Core 2 Duo P8400

Core i7-4650U

The Core i7-4650U is manufactured by Intel. It was released in 4 June 2013 (12 years ago). It is based on the Haswell-ULT (2013) architecture. It features 2 cores and 4 threads. Base frequency is 1.7 GHz, with boost up to 3.3 GHz. L3 cache: 4 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 2,463 points. Launch price was $454.

Core 2 Duo P8400

The Core 2 Duo P8400 is manufactured by Intel. It was released in 15 July 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.26 GHz, with boost up to 2.26 GHz. L3 cache: 3 MB L2 Cache. L2 cache: 3 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 25 Watt. Passmark benchmark score: 2,497 points. Launch price was $209.

⚡

Processing Power

The Core i7-4650U packs 2 cores / 4 threads, matching the Core 2 Duo P8400's 2 cores. Boost clocks reach 3.3 GHz on the Core i7-4650U versus 2.26 GHz on the Core 2 Duo P8400 — a 37.4% clock advantage for the Core i7-4650U (base: 1.7 GHz vs 2.26 GHz). The Core i7-4650U uses the Haswell-ULT (2013) architecture (22 nm), while the Core 2 Duo P8400 uses Penryn (2008−2011) (45 nm). In PassMark, the Core i7-4650U scores 2,463 against the Core 2 Duo P8400's 2,497 — a 1.4% lead for the Core 2 Duo P8400. L3 cache: 4 MB (total) on the Core i7-4650U vs 3 MB L2 Cache on the Core 2 Duo P8400.

Feature	Core i7-4650U	Core 2 Duo P8400
Cores / Threads	2 / 4	2 / 2
Boost Clock	3.3 GHz+46%	2.26 GHz
Base Clock	1.7 GHz	2.26 GHz+33%
L3 Cache	4 MB (total)+33%	3 MB L2 Cache
L2 Cache	256K (per core)	3 MB+1100%
Process	22 nm-51%	45 nm
Architecture	Haswell-ULT (2013)	Penryn (2008−2011)
PassMark	2,463	2,497+1%

🧠

Memory & Platform

The Core i7-4650U uses the FCBGA1168 socket (PCIe 3.0), while the Core 2 Duo P8400 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.