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CPU

Intel

Intel Core i5-661

Processor

CPU cores: 2
CPU threads: 4
Maximum boost clock: 3.6 GHz
Thermal design power: 87 W

Benchmark results

PassMark · version unreported · cpuMark2,462^*Platform unreported Compare results
PassMark · version unreported · threadMark1,455^*Platform unreported Compare results
Reported score · version unreported · mark3,182^*Platform unreported Compare results

Processing & platform

CPU cores: 2
Graphics: Intel® HD Graphics for Previous Generation Intel® Processors^*
CPU threads: 4
Base clock: 3.33 GHz
Integrated GPU base frequency: 900 MHz^*
Maximum supported memory bandwidth: 21 GB/s^*
Reported CPU clock: 3.333 GHz^*
Maximum boost clock: 3.6 GHz
Architecture: Westmere^*
Socket / package: LGA1156^*
Process node: 32 nm^*
Reported chip die area: 81 mm²^*
Chip/package TDP: 87 W^*
Transistors: 382 million^*
Hardware threads per core: 2^*

Cache hierarchy

Smart Cache / shared
Level
Smart Cache
Scope
shared
Size
4 MB
Reported cache^*
Size
4 MB^*
Level
Reported cache (level unstated)^*
Scope
Intel® Smart Cache^*

Memory & storage

Memory channels: 2^*
Video memory type: DDR3 1066/1333^*

Supported memory

DDR3 1066/1333^*

Power specifications

Thermal design power: 87 W

System configuration

Detailed specifications

Specifications 1 · 32 fields

Product Collection: Legacy Intel® Core™ Processors^*
Processor Base Frequency: 3.33^* GHz
Max Turbo Frequency: 3.6^* GHz
Cache: 4 MB SmartCache^*
Bus Speed: 2.5 GT/s DMI^*
TDP: 87^* W
Embedded Options Available: No^*
Max Memory Size: 16.38^* GB
Memory Types: DDR3 1066/1333^*
Max nb of Memory Channels: 2^*
Vertical Segment: Desktop^*
Max Memory Bandwidth: 21^* GB/s
Graphics Base Frequency: 900^* MHz
Processor Number: i5-661^*
PCI Express Revision: 2^*
PCI Express Configurations: 1x16, 2x8^*
Max nb of PCI Express Lanes: 16^*
T: 69.8°C^*
Intel Hyper Threading Technology: Yes^*
Intel Virtualization Technology VTx: Yes^*
Intel 64: Yes^*
Status: End of Interactive Support^*
Instruction Set: 64-bit^*
Instruction Set Extensions: SSE4.2^*
Idle States: Yes^*
Thermal Monitoring Technologies: No^*
Execute Disable Bit: Yes^*
Launch Date: Q1'10^*
Lithography: 32^* nm
Recommended Customer Price: $177.00^*
nb of Cores: 2^*
nb of Threads: 4^*

Specifications 2 · 43 fields

ifu CPU microarchitecture: 3^*
metal layers Manufacturing process: 9^*
lsfu CPU microarchitecture: 2^*
metal Manufacturing process: copper^*
fpfu CPU microarchitecture: 3^*
model: 661^*
date: 2010-01-01^*
tfu CPU microarchitecture: 5^*
clock: 3,333^*
max inst decoded CPU microarchitecture: 4^*
vth Manufacturing process: 0.37^*
max clock: 3,600^*
rob size CPU microarchitecture: 128^*
hw nthreadspercore: 2^*
iwindow CPU microarchitecture: 36^*
hw ncores: 2^*
if queue CPU microarchitecture: 18^*
tdp: 87^*
bus width: 64^*
arch int reg CPU microarchitecture: 38,400^*
transistors: 382^*
die size: 81^*
vdd low: 0.65^*
vdd high: 1.4^*
out of order CPU microarchitecture: t^*
integrated mc CPU microarchitecture: t^*
l1i CPU cache configuration: 32^*
name CPU microarchitecture: Nehalem^*
name Processor code name: Clarkdale^*
name Processor family: Core i5^*
isa CPU microarchitecture: x86-64^*
l1d CPU cache configuration: 32^*
l2 shared CPU cache configuration: 256^*
isa extensions CPU microarchitecture: SSE4.2^*
l2 shared ncores CPU cache configuration: 1^*
year Manufacturing process: 2010^*
fp pipestages CPU microarchitecture: 16^*
l3 shared CPU cache configuration: 4,096^*
technology Manufacturing process: CMOS^*
feature size Manufacturing process: 0.032^*
int pipestages CPU microarchitecture: 16^*
channel length Manufacturing process: 0.018^*
max uop issued per cycle CPU microarchitecture: 5^*

Specifications 3 · 51 fields

AESTech

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

BornOnDate

Q1'10^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

Bus

2.5 GT/s^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

Cache

4 MB Intel® Smart Cache^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ClockSpeed

3.33 GHz^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ClockSpeedMax

3.60 GHz^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

CodeNameText

Products formerly Clarkdale^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

CoreCount

2^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

CpuId

43553^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

CpuName

Intel® Core™ i5-661 Processor^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

CVTHD

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

DemandBasedSwitching

No^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

DieSize

81 mm2^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

EM64

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

Embedded

No^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ExecuteDisable

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ExtendedPageTables

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

FDI

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

GraphicsFreq

900 MHz^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

HaltState

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

HyperThreading

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

InstructionSet

64-bit^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

InstructionSetExtensions

Intel® SSE4.2^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

Lithography

32 nm^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

MarketSegment

Desktop^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

MaxCPUs

1^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

MaxMem

16.38 GB^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

MaxMemoryBandwidth

21 GB/s^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

MaxTDP

87 W^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

MemoryTypes

DDR3 1066/1333^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

NumDisplaysSupported

2^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

NumMemoryChannels

2^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

NumPCIExpressPorts

16^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

PackageSize

37.5mm x 37.5mm^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

PCIExpressConfigs

1x16. 2x8^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

PCIExpressRevision

2.0^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

PhysicalAddressExtension

36-bit^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ProcessorGraphicsModelId

Intel® HD Graphics for Previous Generation Intel® Processors^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ProcessorNumber

i5-661^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ProductGroup

Legacy Intel® Core™ Processors^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ServicingStatus

End of Servicing Lifetime^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

SocketsSupported

FCLGA1156^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

SpeedstepTechnology

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

StatusCodeText

Discontinued^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

TBTVersion

1.0^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

TCase

69.8°C^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ThermalMonitoring2Indicator

No^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

ThreadCount

4^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

TransistorCount

382 million^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

TXT

No^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

VTX

Yes^*

Scope and conditions

native_context

member: intel-cpus.csv^*
row: 923^*

Specifications 4 · 7 fields

Processor: Intel Core i5-661 Processor^*
Status: Discontinued^*
Release Date: Q1'10^*
Cores: 2^*
Max Turbo Speed: 3.6^* GHz
Base Speed: 3.33^* GHz
Cache Size: 4^* MB

Specifications 5 · 12 fields

name: Intel Core i5-661 @ 3.33GHz^*
cores: 2^*
logicals: 2^*
samples: 176^*
price: 178.85^*
tdp: 87^*
date: 2010-01-01^*
socket: LGA1156^*
category: Desktop^*
speed: 3,330^*
turbo: 3,600^*
cpuCount: 1^*

Specifications 6 · 2 fields

brand: Intel^*
name: Intel Core i5-661 @ 3.33GHz^*

Specifications 7 · 10 fields

Foundry: Intel^*
Vendor: Intel^*
Product: Intel Core i5-661^*
Type: CPU^*
Release Date: 2010-01-07^*
Process Size (nm): 32^* nm
TDP (W): 87^* W
Die Size (mm^2): 81^* mm²
Transistors (million): 382^*
Freq (MHz): 3,333^* MHz

Specifications 8 · 18 fields

turbo frequency: 3,600^*
cache size: 4,096^*
tdp: 87^*
socket: FCLGA1156^*
memory type: DDR3 1066/1333^*
cores: 2^*
vertical segment: Desktop^*
max memory size: 17,175,674.879882812^*
status: Discontinued^*
max temp: 69.8^*
package size: 37.5mm x 37.5mm^*
threads: 4^*
name: Intel Core i5-661^*
processor number: i5-661^*
launch date: 2010-02-01^*
lithography: 32^*
bus speed: 2.5^*
base frequency: 3,330^*

Specifications 9 · 12 fields

ClockSpeed: 3.33^* GHz
Cache: 4 MB Intel® Smart Cache^*
Bus: 2.5 GT/s^*
MaxTDP: 87^* W
BornOnDate: Q1'10^*
Model: Intel® Core™ i5-661 Processor^*
Price: $177.00^*
MarketSegment: Desktop^*
Lithography: 32^* nm
CoreCount: 2^*
ThreadCount: 4^*
ClockSpeedMax: 3.6^* GHz

Specifications 10 · 49 fields

Recommended Customer Price

$177.00^*

Scope and conditions

source_native_row_context

Price scope: Historical source recommendation; not a current retail offer. The original currency notation is retained.^*

Total Cores

2^*

Total Threads

4^*

Max Turbo Frequency

3.6^* GHz

Processor Base Frequency

3.33^* GHz

Cache

4.0^* MB

Scope and conditions

source_native_row_context

Cache description: Intel® Smart Cache^*
Original declaration: 4 MB Intel® Smart Cache^*

Bus Speed

2.5^* GT/s

TDP

87^* W

Marketing Status

Discontinued^*

Launch Date

Q1'10^*

Servicing Status

End of Servicing Lifetime^*

Embedded Options Available

No^*

Max Memory Size (dependent on memory type)

16.38^* GB

Memory Types

DDR3 1066/1333^*

Max # of Memory Channels

2^*

Max Memory Bandwidth

21^* GB/s

Physical Address Extensions

36-bit^*

PCI Express Revision

2.0^*

PCI Express Configurations ‡

1x16 | 2x8^*

Max # of PCI Express Lanes

16^*

Sockets Supported

FCLGA1156^*

Max CPU Configuration

1^*

Package Size

37.5mm x 37.5mm^*

Product Collection

Legacy Intel® Core™ Processors^*

Processing Die Size

81 mm2^*

# of Processing Die Transistors

382 million^*

TCASE

69.8^* °C

Intel® Turbo Boost Technology ‡

1.0^*

Intel® Hyper-Threading Technology ‡

Yes^*

Intel® 64 ‡

Yes^*

Instruction Set

64-bit^*

Vertical Segment

Desktop^*

Instruction Set Extensions

Intel® SSE4.2^*

Idle States

Yes^*

Enhanced Intel SpeedStep® Technology

Yes^*

Intel® Demand Based Switching

No^*

Thermal Monitoring Technologies

No^*

Processor Number

i5-661^*

Intel® AES New Instructions

Yes^*

Intel® Trusted Execution Technology ‡

No^*

Execute Disable Bit ‡

Yes^*

Intel® Virtualization Technology (VT-x) ‡

Yes^*

Lithography

32^* nm

Intel® VT-x with Extended Page Tables (EPT) ‡

Yes^*

Graphics Base Frequency

900^* MHz

Intel® Flexible Display Interface (Intel® FDI)

Yes^*

Intel® Clear Video HD Technology

Yes^*

# of Displays Supported ‡

2^*

Processor Graphics ‡

Intel® HD Graphics for Previous Generation Intel® Processors^*

Specifications 11 · 11 fields

name: Intel Core i5-661 @ 3.33GHz^*
socket: LGA1156^*
category: Desktop^*
price: $252.01^*
mark: 3,182^*
value: 12.63^*
single thread: 1,331^*
single thread value: 5.28^*
tdp: 87^*
powerperf: 36^*
testdate: Jan 2010^*

Specifications 12 · 7 fields

microarchitecture

Westmere^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core i5-661^*
catalogue_reference: Intel Core i5-661^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

Reported core clock

3.33^* GHz

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core i5-661^*
catalogue_reference: Intel Core i5-661^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Source calls this core clock; it is not relabelled as base, sustained or gaming clock.^*

core count

2^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core i5-661^*
catalogue_reference: Intel Core i5-661^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

Historical listing price (dataset 2025-07-23)

amount: 80^*
currency: USD^*
dataset_date: 2025-07-23^*
scope: Historical listing observation; retailer, stock and current availability unknown^*

USD

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core i5-661^*
catalogue_reference: Intel Core i5-661^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

graphics

Intel HD Graphics^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core i5-661^*
catalogue_reference: Intel Core i5-661^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

name

Intel Core i5-661^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core i5-661^*
catalogue_reference: Intel Core i5-661^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

tdp

87^* W

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core i5-661^*
catalogue_reference: Intel Core i5-661^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

Specifications 13 · 12 fields

cpuName

Intel Core i5-661 @ 3.33GHz^*

Scope and conditions

benchmark_context

suite: PassMark^*
test_configuration_verified: No^*
comparable: No^*

testDate

2,010^*

Scope and conditions

benchmark_context

suite: PassMark^*
test_configuration_verified: No^*
comparable: No^*

socket

LGA1156^*

Scope and conditions

benchmark_context

suite: PassMark^*
test_configuration_verified: No^*
comparable: No^*