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Intel

Core i5 661

▲ 5118 ▼

2 Cores, 4 Threads @3.33 GHz, Clarkdale.
Release date ≤ Q4 2013.

Average Bench: 49.6% (808th of 1355)

Based on 2,383 user benchmarks.  Devices: BFEBFBFF00020652, BFEBFBFF00020655 Model: Intel(R) Core(TM) i5 CPU 661 @ 3.33GHz
Poor: 37%Average: 49.6% Great: 55%
Gaming
Gaming 50%
Yacht
Desktop
Desktop 57%
Gunboat
Workstation
Workstation 36%
Jet ski

Popular builds with this CPU

Below average average bench

The Intel Core i5 661 averaged 50.4% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. Memory Latency 66.6Pts
Avg. Single Core Mixed Speed 76.4Pts

Very good consistency

The range of scores (95th - 5th percentile) for the Intel Core i5 661 is just 17.9%. This is a relatively narrow range which indicates that the Intel Core i5 661 performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Multi Core Mixed Speed 193Pts
Avg. Octa Core Mixed Speed 193Pts
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Average Bench

(Based on 2,383 samples)
Rank 80849.6%
Min Avg Max
51.1 Memory 66.6 74
50.8 1-Core 76.4 86.9
84.5 2-Core 132 160
55.7% 91.8 Pts
Min Avg Max
121 4-Core 190 217
126 8-Core 193 218
26.1% 191 Pts
Min Avg Max
130 64-Core 193 218
13% 193 Pts
User Benchmarks Bench Normal Heavy Server
The fastest CPU (mainstream) averages a speed of 100%
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
52.6% Above average
Memory 69.5
1-Core 85.4
2-Core 145
60% 100 Pts
4-Core 208
8-Core 210
28% 209 Pts
64-Core 194
13% 194 Pts
CPU 1, 1 CPU, 2 cores, 4 threads
Base clock 3.3 GHz, turbo 3.3 GHz (avg)
52.6% Above average
Memory 70.1
1-Core 80.3
2-Core 139
58% 96.4 Pts
4-Core 205
8-Core 202
28% 204 Pts
64-Core 204
14% 204 Pts
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
52.6% Above average
Memory 74.1
1-Core 69.7
2-Core 114
54% 86 Pts
4-Core 176
8-Core 211
26% 194 Pts
64-Core 206
14% 206 Pts
CPU 1, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
52.3% Above average
Memory 68.8
1-Core 82.3
2-Core 140
59% 97.1 Pts
4-Core 210
8-Core 204
28% 207 Pts
64-Core 211
14% 211 Pts
CPU 1, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.3 GHz (avg)
52.3% Above average
Memory 69
1-Core 54.3
2-Core 125
50% 82.8 Pts
4-Core 211
8-Core 192
28% 201 Pts
64-Core 202
14% 202 Pts
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz
51.5% Above average
Memory 69.6
1-Core 73.6
2-Core 119
55% 87.5 Pts
4-Core 193
8-Core 206
27% 200 Pts
64-Core 218
15% 218 Pts
CPU 1, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.3 GHz (avg)
50.8% Above average
Memory 65.7
1-Core 82
2-Core 144
58% 97.1 Pts
4-Core 208
8-Core 214
29% 211 Pts
64-Core 215
14% 215 Pts
CPU 1, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
50.5% Above average
Memory 64.6
1-Core 85.7
2-Core 156
60% 102 Pts
4-Core 212
8-Core 212
29% 212 Pts
64-Core 214
14% 214 Pts
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.35 GHz (avg)
31.5% Below average
Memory 52.3
1-Core 54.7
2-Core 75.1
39% 60.7 Pts
4-Core 60.3
8-Core 103
10% 81.8 Pts
64-Core 205
14% 205 Pts
2,383 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 52,848,921 CPUs tested.

 Prices

AmazonUS $2202 years
Send price feedback
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money.

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Typical Core i5 661 Builds (Compare 50,648 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 2%
Tree trunk
Desktop
Desktop 49%
Yacht
Workstation
Workstation 2%
Tree trunk

Disqualified System: bin bin

CPU
Core i5 661Intel  $220Bench 50%, 2,383 samples1x
GPU
HD 2000 (Desktop 1.1 GHz)IntelBench 1%, 146,120 samples2,672x
GTX 1050-TiNvidia  $155Bench 31%, 870,997 samples2,116x
HD 2500 (Desktop 1.05 GHz)IntelBench 1%, 139,179 samples1,619x
SSD
A400 240GBKingston  $30Bench 66%, 397,594 samples1,719x
A400 120GBKingston  $25Bench 61%, 154,307 samples902x
850 Evo 250GBSamsung  $100Bench 104%, 849,566 samples729x
RAM
2x2GBUnknownBench 19%, 443,674 samples1,845x
4x2GBUnknownBench 24%, 177,907 samples1,236x
1x4GBUnknownBench 26%, 158,481 samples744x
EDIT WITH CUSTOM PC BUILDER Value: 49% - Average Total price: $250

Popular Core i5 661 systems:

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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - SkillBench (space shooter) tests user input accuracy.
  • - Reports are generated and presented on userbenchmark.com.
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Processor Rankings (Price vs Performance) May 2022 CPU Rankings.

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.

 Specifications

Essentials

DescriptionIntel® Core™ i5-661 Processor (4M Cache, 3.33 GHz)
Code NameClarkdale
Launch DateQ1'10
Processor Numberi5-661
# of Cores2
# of Threads4
Cache4 MB SmartCache
Instruction Set64-bit
Instruction Set ExtensionsSSE4.2
Embedded Options AvailableNo
Lithography32 nm
VID Voltage Range0.6500V-1.4000V
Recommended Price$177.00
Clock Speed3.33 GHz
Max Turbo Frequency3.6 GHz
Bus Speed2.5 GT/s DMI
Max TDP87 W

Graphics

Processor GraphicsIntel® HD Graphics
Graphics Base Frequency900 MHz
# of Displays Supported2
Clear Video HD TechYes
Flexible Display InterfaceYes

Memory

Max Memory Size16 GB
Memory TypesDDR3 1066/1333
Memory Channels2
Memory Bandwidth21 GB/s
Physical Address Extensions36-bit

Expansion Options

PCI Express Revision2.0
PCI Express Configurations1x16, 2x8
Max # of PCI Express Lanes16

Data Protection

AES New InstructionsYes

Advanced Technologies

Virtualization Tech (VT-x)Yes
Intel 64Yes
Idle StatesYes
Enhanced Intel SpeedStep® TechYes
Thermal Monitoring TechnologiesNo
Turbo Boost Tech1.0
Hyper-Threading TechYes
VT-x with Extended Page Tables (EPT)Yes
Demand Based SwitchingNo
vPro TechNo

Package

Package Size37.5mm x 37.5mm
Graphics and IMC Lithography45 nm
Max CPU Configuration1
Sockets SupportedFCLGA1156
Processing Die Size81 mm2
# of Processing Die Transistors382 million
Graphics and IMC Die Size114 mm2
# of Graphics and IMC Die Transistors177 million

Platform Protection

Execute Disable BitYes
Trusted Execution TechNo

 Comments

Added n/a ago.
USA-User
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Liked (edit your comment) Add link

10 months ago.

ColdSpy
Avatar level
332

Average

2 years ago.

A higher end Clarkdale hyperthreaded dual core processor. Came with similar amount of cores as i3-540 but comes with performance boosting features such as turbo which boost operating frequency to determined clock. For most users might worth looking to spend $30 more for more powerful i5-750 which comes with 4 core and 4 thread. Still worth it for today albeit for light gaming and modern basic tasks.

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Speed Comparisons

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1355 Processors (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different CPUs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

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ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-12600K $278Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-12400F $170Nvidia RTX 3050 $250Samsung 850 Evo 120GB $200
Intel Core i7-12700K $345Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $38Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $72SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $470SanDisk Ultra Fit 32GB $16
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