Xeon 2.66 vs Mobile Pentium 4 2.80

Xeon 2.66

1 Cores1 Thrd89 WWMax: 2.66 GHz2002

Mobile Pentium 4 2.80

1 Cores2 Thrd68 WWMax: 2.8 GHz2003

Performance Spectrum - CPU

Xeon 2.66

1 / 1

445

+4.0%

Atom 230

Pentium 4 2.26

Pentium M 1.40

Mobile Pentium 4 2.66

Mobile Pentium 4 2.80

1 / 2

428

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 Xeon 2.66 is positioned at rank 1028 and the Mobile Pentium 4 2.80 is on rank 847, so the Mobile Pentium 4 2.80 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 Xeon 2.66

Xeon Platinum 8454H

MSRP: $6540|Avg: N/A

157442%

Xeon Gold 6240R

MSRP: $2444|Avg: N/A

29727%

#10

Xeon 6337P

MSRP: $60|Avg: $5

26411%

#15

EPYC 9174F

MSRP: $194|Avg: $30

20403%

#1028

Xeon 2.66

MSRP: $337|Avg: $10

100%

#1029

Xeon X5272

MSRP: $1172|Avg: $76

94%

#1030

Xeon Platinum 8260L

MSRP: $7500|Avg: $750

52%

#1031

Xeon 3.20

MSRP: $851|Avg: $10

52%

#1032

Xeon X5355

MSRP: $4491|Avg: $4000

34%

#1033

Xeon E5420

MSRP: $7214|Avg: $6500

21%

Based on actual market prices and performance synthetic scores.

Performance Per Dollar Mobile Pentium 4 2.80

#834

Atom x5-Z8300

MSRP: $20|Avg: N/A

1371%

#835

Atom Z3735G

MSRP: $17|Avg: N/A

1351%

#836

Core i5-480M

MSRP: $81|Avg: $77

1240%

#837

Core i5-460M

MSRP: $80|Avg: $129

1235%

#838

Core i5-2540M

MSRP: $266|Avg: $10

1223%

#840

Core i5-450M

MSRP: $32|Avg: $31

1181%

#841

Core i3-380M

MSRP: $49|Avg: $25

1133%

#842

Core i5-430M

MSRP: N/A|Avg: $33

1131%

#843

Core 2 Duo T6600

MSRP: N/A|Avg: $4

1100%

#847

Mobile Pentium 4 2.80

MSRP: N/A|Avg: N/A

100%

#851

Pentium P6300

MSRP: $80|Avg: $10

98%

#853

E-350

MSRP: $50|Avg: $15

98%

#855

Ryzen Embedded R1305G

MSRP: $150|Avg: $50

98%

Based on actual market prices and performance synthetic scores.

Performance Comparison

About PassMark

🏆 Chipversus Verdict

🚀 Performance Leadership

Use Case Distinction: This is a comparison between a Professional Workstation processor ($10) and a Consumer Desktop CPU. The Xeon 2.66 is engineered for massive parallel workloads (rendering, scientific simulations), offering significantly higher core counts.

Insight	Xeon 2.66	Mobile Pentium 4 2.80
Gaming	❌ Lower gaming performance	✅ Superior gaming performance
Workstation	✅ Better multi-core power	❌ Weaker in multi-core tasks
Price	⚠️ Higher cost ($10)	✅ More affordable ($0)
Longevity	🛑 Legacy (Prestonia (2002) / 130 nm)	🛑 Legacy (Northwood (2002−2004) / 130 nm)

💎 Value Proposition

The Mobile Pentium 4 2.80 ($0), however, is optimized for mixed workloads and gaming. For most users, it offers superior single-thread performance and responsiveness at a fraction of the cost ($10 less, 100% cheaper), making it the better choice for daily use and gaming.

Insight	Xeon 2.66	Mobile Pentium 4 2.80
Cost Efficiency	❌ Lower cost efficiency	❌ Lower cost efficiency
Upfront Cost	⚠️ Higher cost ($10)	✅ 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.

Xeon 2.66 Benchmark Check

Mobile Pentium 4 2.80 Benchmark Check

Technical Specifications

Side-by-side comparison of Xeon 2.66 and Mobile Pentium 4 2.80

Xeon 2.66

The Xeon 2.66 is manufactured by Intel. It was released in 2015-01-01. It is based on the Prestonia (2002) architecture. It features 1 cores and 1 threads. Max frequency: 2.66 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA604. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 445 points. Launch price was $800.

Mobile Pentium 4 2.80

The Mobile Pentium 4 2.80 is manufactured by Intel. It was released in Junho 2003 (22 years ago). It is based on the Northwood (2002−2004) architecture. It features 1 cores and 2 threads. Max frequency: 2.8 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA478. Thermal design power (TDP): 68 Watt. Memory support: DDR1, DDR2. Passmark benchmark score: 428 points. Launch price was $69.

⚡

Processing Power

The Xeon 2.66 packs 1 cores / 1 threads, matching the Mobile Pentium 4 2.80's 1 cores. Boost clocks reach 2.66 GHz on the Xeon 2.66 versus 2.8 GHz on the Mobile Pentium 4 2.80 — a 5.1% clock advantage for the Mobile Pentium 4 2.80. The Xeon 2.66 uses the Prestonia (2002) architecture (130 nm), while the Mobile Pentium 4 2.80 uses Northwood (2002−2004) (130 nm). In PassMark, the Xeon 2.66 scores 445 against the Mobile Pentium 4 2.80's 428 — a 3.9% lead for the Xeon 2.66. Both processors carry 0 kB of L3 cache.

Feature	Xeon 2.66	Mobile Pentium 4 2.80
Cores / Threads	1 / 1	1 / 2
Boost Clock	2.66 GHz	2.8 GHz+5%
L3 Cache	0 kB	0 kB
L2 Cache	512 kB	512 kB
Process	130 nm	130 nm
Architecture	Prestonia (2002)	Northwood (2002−2004)
PassMark	445+4%	428

🧠

Memory & Platform

The Xeon 2.66 uses the PGA604 socket (PCIe 2.0), while the Mobile Pentium 4 2.80 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.