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Intel

Core i5 661

▲ 528 ▼

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

Average Bench: 50.4% (718th of 1258)

Based on 1,600 user benchmarks.  Devices: BFEBFBFF00020652, BFEBFBFF00020655 Model: Intel(R) Core(TM) i5 CPU 661 @ 3.33GHz
Poor: 38%Average: 50.4% Great: 56%
Gaming
Gaming 50%
Yacht
Desktop
Desktop 57%
Gunboat
Workstation
Workstation 36%
Jet ski

Popular builds with this CPU

Average average bench

The Intel Core i5 661 averaged 49.6% 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 68.1Pts
Avg. Single Core Mixed Speed 76.2Pts

Very good consistency

The range of scores (95th - 5th percentile) for the Intel Core i5 661 is just 17.4%. 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 194Pts
Avg. Octa Core Mixed Speed 193Pts
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Average Bench

(Based on 1,600 samples)
Rank 71850.4%
Min Avg Max
54.1 Memory 68.1 75.2
52.6 1-Core 76.2 86.2
84.4 2-Core 132 162
56.1% 92 Pts
Min Avg Max
123 4-Core 190 214
131 8-Core 193 214
26.1% 191 Pts
Min Avg Max
130 64-Core 194 215
13% 194 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 3.2 GHz (avg)
53.6% Above average
Memory 74.1
1-Core 68.7
2-Core 142
58% 95 Pts
4-Core 196
8-Core 183
26% 189 Pts
64-Core 174
12% 174 Pts
Socket 1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
53.5% Above average
Memory 71
1-Core 79.5
2-Core 140
59% 96.7 Pts
4-Core 210
8-Core 207
29% 209 Pts
64-Core 205
14% 205 Pts
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
53.1% Above average
Memory 69.4
1-Core 87
2-Core 149
61% 102 Pts
4-Core 214
8-Core 214
29% 214 Pts
64-Core 212
14% 212 Pts
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz
51.6% Above average
Memory 68.6
1-Core 78.3
2-Core 131
57% 92.7 Pts
4-Core 203
8-Core 200
28% 201 Pts
64-Core 204
14% 204 Pts
Socket 1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
51.4% Above average
Memory 72.6
1-Core 74.6
2-Core 126
56% 91 Pts
4-Core 174
8-Core 191
25% 183 Pts
64-Core 193
13% 193 Pts
Socket 1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
51.2% Above average
Memory 70.4
1-Core 71.3
2-Core 133
56% 91.6 Pts
4-Core 187
8-Core 188
26% 188 Pts
64-Core 192
13% 192 Pts
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
50% Average
Memory 65.6
1-Core 76.4
2-Core 130
55% 90.7 Pts
4-Core 198
8-Core 210
28% 204 Pts
64-Core 212
14% 212 Pts
LGA1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 3.45 GHz (avg)
47.9% Average
Memory 67.8
1-Core 78.5
2-Core 132
57% 92.9 Pts
4-Core 165
8-Core 164
22% 164 Pts
64-Core 163
11% 163 Pts
Socket 1156, 1 CPU, 2 cores, 4 threads
Base clock 3.35 GHz, turbo 2.8 GHz (avg)
45.2% Average
Memory 63.2
1-Core 82.6
2-Core 144
57% 96.6 Pts
4-Core 168
8-Core 120
21% 144 Pts
64-Core 122
8% 122 Pts
1,600 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 31,575,892 CPUs tested.

 Prices

AmazonUS $2202 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 15,593 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%, 1,600 samples1x
GPU
HD 2000 (Desktop 1.1 GHz)IntelBench 1%, 102,694 samples712x
GTX 1050-TiNvidia  $150Bench 31%, 602,474 samples697x
HD 2500 (Desktop 1.05 GHz)IntelBench 1%, 92,310 samples468x
SSD
A400 240GBKingston  $32Bench 64%, 181,757 samples491x
A400 120GBKingston  $25Bench 60%, 99,875 samples300x
Virtual NVMe Disk 275GBParallelsBench 200%, 423 samples296x
RAM
2x2GBUnknownBench 20%, 306,011 samples651x
4x2GBUnknownBench 24%, 145,533 samples436x
1x4GBUnknownBench 24%, 117,629 samples244x
EDIT WITH CUSTOM PC BUILDER Value: 49% - Average Total price: $252

Popular Core i5 661 systems:

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

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

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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.
  • - 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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  • - Share your opinion by voting.
Processor Rankings (Price vs Performance) August 2020 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

8 months ago.

ColdSpy
Avatar level
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Average

8 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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1258 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
How does IPC compare between AMD's Ryzen and Intel's Kaby Lake?
What is multi core mixed speed?
What is multi core integer speed?
What is multi core floating point speed?
What is single core mixed CPU speed?
What is quad core mixed CPU speed?
What is quad core floating point speed?
What is quad core integer speed?
What is single core floating point speed?
What is single core integer speed?
What is the GeekBench single core score?
What is a CPU?
What is the effective CPU speed index?
What is overclocking?
What is thermal design power (TDP)?
What is the GeekBench score?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-9600K $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $46
Intel Core i5-9400F $154Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $350Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $69SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
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