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Intel

Core i5 661

▲ 5118 ▼

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

Average Bench: 49.8% (755th of 1316)

Based on 2,259 user benchmarks.  Devices: BFEBFBFF00020652, BFEBFBFF00020655 Model: Intel(R) Core(TM) i5 CPU 661 @ 3.33GHz
Poor: 38%Average: 49.8% 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 50.1% 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 67.2Pts
Avg. Single Core Mixed Speed 76.1Pts

Very good consistency

The range of scores (95th - 5th percentile) for the Intel Core i5 661 is just 16.7%. 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 192Pts
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Average Bench

(Based on 2,259 samples)
Rank 75549.8%
Min Avg Max
53.4 Memory 67.2 74.2
48.1 1-Core 76.1 86.3
84.2 2-Core 132 158
55.8% 91.8 Pts
Min Avg Max
121 4-Core 189 214
129 8-Core 192 214
26% 191 Pts
Min Avg Max
129 64-Core 193 214
12.9% 193 Pts
User Benchmarks Bench Normal Heavy Server
The fastest CPU (mainstream) averages a speed of 100%
Socket 1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
56.3% Above average
Memory 82
1-Core 80.5
2-Core 139
63% 100 Pts
4-Core 178
8-Core 193
25% 185 Pts
64-Core 141
10% 141 Pts
CPU 1, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
53.9% Above average
Memory 72.6
1-Core 84
2-Core 150
62% 102 Pts
4-Core 206
8-Core 210
28% 208 Pts
64-Core 208
14% 208 Pts
CPU 1, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
50.7% Above average
Memory 69.3
1-Core 70.9
2-Core 132
55% 90.7 Pts
4-Core 188
8-Core 187
26% 187 Pts
64-Core 201
14% 201 Pts
Socket 1156, 1 CPU, 2 cores, 4 threads
Base clock 4 GHz, turbo 3.3 GHz (avg)
50.1% Above average
Memory 67.5
1-Core 78.9
2-Core 135
57% 93.9 Pts
4-Core 191
8-Core 195
26% 193 Pts
64-Core 198
13% 198 Pts
Socket 1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
49.9% Average
Memory 71.3
1-Core 73
2-Core 137
57% 93.7 Pts
4-Core 162
8-Core 195
24% 179 Pts
64-Core 166
11% 166 Pts
CPU 1, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
49.5% Average
Memory 69.9
1-Core 47
2-Core 136
50% 84.4 Pts
4-Core 166
8-Core 193
24% 179 Pts
64-Core 195
13% 195 Pts
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 1.9 GHz (avg)
20.6% Poor
Memory 24.1
1-Core 50.9
2-Core 80.1
29% 51.7 Pts
4-Core 98.6
8-Core 99.1
14% 98.8 Pts
64-Core 84.7
6% 84.7 Pts
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
16.3% Very poor
Memory 23.5
1-Core 60.3
2-Core 105
34% 62.9 Pts
4-Core 49.6
8-Core 84.4
8% 67 Pts
64-Core 70.6
5% 70.6 Pts
2,259 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,111,530 CPUs tested.

 Prices

AmazonUS $22017 months
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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 42,247 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%, 2,259 samples1x
GPU
HD 2000 (Desktop 1.1 GHz)IntelBench 1%, 136,719 samples2,191x
GTX 1050-TiNvidia  $155Bench 31%, 864,988 samples1,804x
HD 2500 (Desktop 1.05 GHz)IntelBench 1%, 130,080 samples1,341x
SSD
A400 240GBKingston  $28Bench 68%, 342,494 samples1,415x
A400 120GBKingston  $23Bench 58%, 166,060 samples786x
Virtual NVMe Disk 275GBParallelsBench 189%, 1,028 samples629x
RAM
2x2GBUnknownBench 20%, 412,854 samples1,577x
4x2GBUnknownBench 25%, 152,619 samples1,035x
1x4GBUnknownBench 30%, 140,598 samples643x
EDIT WITH CUSTOM PC BUILDER Value: 50% - Average Total price: $248

Popular Core i5 661 systems:

How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

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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.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
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Processor Rankings (Price vs Performance) October 2021 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

3 months ago.

ColdSpy
Avatar level
332

Average

22 months 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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1316 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

Processors FAQ
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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-11600K $249Nvidia RTX 3060-Ti $400Crucial MX500 250GB $40
Intel Core i5-11400F $245Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $350Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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