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.

Overview

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.

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.

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

#241

Xeon Phi 7210

MSRP: $1881|Avg: $150

109%

#242

Xeon E5-2679 v4

MSRP: $2702|Avg: $500

108%

#243

Xeon W-11955M

MSRP: $623|Avg: $450

108%

#244

Opteron 6238

MSRP: $455|Avg: $118

107%

#245

Xeon E5-2650L

MSRP: $748|Avg: $129

105%

#246

Xeon E3-1220L v3

MSRP: $193|Avg: $30

105%

#247

EPYC Embedded 8224P

MSRP: $855|Avg: $1048

105%

#248

Xeon Gold 6242R

MSRP: $2977|Avg: $779

104%

#249

Xeon 6515P

MSRP: $740|Avg: $886

103%

#250

Xeon E5-1620 v4

MSRP: $1166|Avg: $160

103%

#251

Xeon W-1250P

MSRP: $311|Avg: $311

103%

#252

Xeon W-11865MLE

MSRP: $467|Avg: $350

102%

#253

Xeon D-1567

MSRP: $2702|Avg: $230

102%

#254

Xeon E-2126G

MSRP: $2702|Avg: $230

102%

#255

Xeon E5-2630L v2

MSRP: $612|Avg: $149

100%

#256

Xeon 2.66

MSRP: $337|Avg: $10

100%

#257

Xeon E5502

MSRP: $188|Avg: $39

99%

#258

Xeon E5-2403 v2

MSRP: $192|Avg: $61

98%

#259

Xeon Gold 6134

MSRP: $2214|Avg: $378

98%

#260

EPYC 8224P

MSRP: $855|Avg: $1048

97%

#261

Xeon Gold 5218

MSRP: $1273|Avg: $500

97%

#262

Xeon E3-1240 v2

MSRP: $250|Avg: $150

96%

#263

EPYC 4564P

MSRP: $1517|Avg: $1517

95%

#264

Ryzen Threadripper PRO 9945WX

MSRP: $1340|Avg: $1340

95%

#265

Xeon E5-4603

MSRP: $202|Avg: $80

95%

#266

Xeon w3-2535

MSRP: $739|Avg: $800

94%

#267

Xeon w5-2555X

MSRP: $1069|Avg: $1145

94%

#268

Xeon w7-2595X

MSRP: $2039|Avg: $1600

93%

#269

Xeon W-1250

MSRP: $285|Avg: $333

92%

#270

Xeon 6517P

MSRP: $1195|Avg: $1195

92%

#271

Xeon W-2235

MSRP: $555|Avg: $350

91%

Based on actual market prices and performance synthetic scores.

FPS Benchmarks

Predicted performance for Xeon 2.66 across popular games. Tested paired with RTX 4090 to isolate CPU performance.

Technical Analysis

Detailed breakdown of Xeon 2.66 specifications and capabilities.

⚡

Processing Power

The Xeon 2.66 is a 1-core / 1-thread processor based on the Prestonia (2002) architecture, manufactured on a 130 nm process node. It reaches a maximum boost clock of 2.66 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 0 kB of L3 cache, plus 512 kB of L2 cache and 16 kB of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 445, placing it in the Entry Level performance tier as a Legacy generation product.

Specification	Xeon 2.66
Cores / ThreadsPhysical/logical processing units	1C / 1T
Max Boost ClockPeak single-core speed under boost	2.66 GHz
ArchitectureCPU microarchitecture design	Prestonia (2002)
Process NodeFabrication technology — smaller = more efficient	130 nm
L3 CacheShared cache — reduces memory latency for all cores	0 kB
L2 CachePer-core fast cache for frequently accessed data	512 kB
L1 CacheUltra-fast per-core cache	16 kB
Die SizePhysical silicon area of the processor	217 mm2
Transistor CountMore transistors = more capabilities	55 million
64-bit Support	No
Windows 11 Compatible	No
PassMark ScoreOverall multi-threaded benchmark score	445

🧠

Memory & Platform

The Xeon 2.66 fits into the PGA604 socket and supports PCIe 2.0.

Specification	Xeon 2.66
TypeDesktop or Laptop processor	server
SocketMotherboard socket required	PGA604
PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth	PCIe 2.0
Max CPUs in ConfigMulti-socket support for servers	2

🌡️

Power & Cooling

The Xeon 2.66 has a rated TDP (Thermal Design Power) of 89 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed.

Specification	Xeon 2.66
TDPThermal Design Power — heat output under sustained workload	89 Watt

💰

Value Analysis

At an average price of $10 (MSRP: $337), the Xeon 2.66 delivers 45 PassMark points per dollar. Performance ranking position: #3422 out of all indexed processors.

Specification	Xeon 2.66
MSRPManufacturer's Suggested Retail Price	$337
Avg Price (30d)Average market price over the last 30 days	$10
Launch PriceOriginal retail price at launch	$800
Performance RankPosition in overall performance ranking	#3422
Release DateLaunch date	2015-01-01
Release Year	2002
DesignerArchitecture designer (e.g. Intel, AMD)	Intel

Specifications Reference

Raw spec sheet for quick lookup. The analysis cards above explain what these fields mean in practice.

3 categories

General Information

6 specs

Type	server
Designer	Intel
Launch Price	$800
Release Date	2015-01-01
Architecture Codename	Prestonia (2002)
Performance Ranking Position	3422

Technical Specifications

11 specs

Cores	1
Threads	1
Die Size	217 mm2
L1 Cache	16 kB
L2 Cache	512 kB
L3 Cache	0 kB
Max Frequency	2.66 GHz
64-Bit Support	-
Transistor Count	55 million
Process Technology	130 nm
Windows 11 Compatible	-