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Intel BX80677I77740X

Core i7-7740X

▲ 53240 ▼

4 Cores, 8 Threads @4.30 GHz, Kaby Lake.
Release date ≈ Q3 2017.

Average Bench: 87% (160th of 1442)

Based on 5,094 user benchmarks.  Device: BFEBFBFF000906E9 Model: Intel(R) Core(TM) i7-7740X CPU @ 4.30GHz
Poor: 74%Average: 87% Great: 96%
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 91%
Nuclear submarine
Workstation
Workstation 74%
Battleship

Popular builds with this CPU

Very good average bench

The Intel Core i7-7740X averaged just 12.9% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Intel Core i7-7740X near the top of the comparison list.

Strengths

Avg. Memory Latency 90.5Pts
Avg. Single Core Speed 133Pts

Good consistency

The range of scores (95th - 5th percentile) for the Intel Core i7-7740X is 22.6%. This is a relatively narrow range which indicates that the Intel Core i7-7740X performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Multi Core Speed 710Pts
Avg. Octa Core Speed 699Pts
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Average Bench

(Based on 5,094 samples)
Rank 16087%
Min Avg Max
79.7 Memory 90.5 96.7
106 1-Core 133 151
206 2-Core 252 293
88.8% 158 Pts
Min Avg Max
348 4-Core 451 532
495 8-Core 699 819
70.9% 575 Pts
Min Avg Max
536 64-Core 710 824
43.9% 710 Pts
User Benchmarks BenchNormalHeavyServer
The fastest CPU (mainstream) averages a speed of 100%
U3E1, 1 CPU, 4 cores, 8 threads
Base clock 4.3 GHz, turbo 4.85 GHz (avg)
95.7% Outstanding
Memory 97.3
1-Core 150
2-Core 293
100% 180 Pts
4-Core 506
8-Core 806
81% 656 Pts
64-Core 805
50% 805 Pts
LGA 2066 R4, 1 CPU, 4 cores, 8 threads
Base clock 4.3 GHz, turbo 4.45 GHz (avg)
92.7% Outstanding
Memory 91
1-Core 138
2-Core 266
92% 165 Pts
4-Core 508
8-Core 746
78% 627 Pts
64-Core 749
46% 749 Pts
CPUSocket, 1 CPU, 4 cores, 8 threads
Base clock 4.3 GHz, turbo 4.45 GHz (avg)
90.7% Outstanding
Memory 90
1-Core 137
2-Core 276
92% 168 Pts
4-Core 492
8-Core 751
77% 621 Pts
64-Core 755
47% 755 Pts
U3E1, 1 CPU, 4 cores, 8 threads
Base clock 4.3 GHz, turbo 4.45 GHz (avg)
89.6% Excellent
Memory 88.3
1-Core 138
2-Core 272
91% 166 Pts
4-Core 490
8-Core 749
77% 619 Pts
64-Core 747
46% 747 Pts
LGA 2066 R4, 1 CPU, 4 cores, 8 threads
Base clock 4.3 GHz, turbo 4.45 GHz (avg)
89.4% Excellent
Memory 91.8
1-Core 136
2-Core 272
92% 167 Pts
4-Core 468
8-Core 747
75% 608 Pts
64-Core 745
46% 745 Pts
CPUSocket, 1 CPU, 4 cores, 8 threads
Base clock 4.3 GHz, turbo 4.55 GHz (avg)
89.1% Excellent
Memory 91.6
1-Core 138
2-Core 263
92% 164 Pts
4-Core 466
8-Core 702
73% 584 Pts
64-Core 712
44% 712 Pts
LGA 2066 R4, 1 CPU, 4 cores, 8 threads
Base clock 4.2 GHz, turbo 4.2 GHz (avg)
70.8% Very good
Memory 76.2
1-Core 109
2-Core 204
73% 130 Pts
4-Core 353
8-Core 525
55% 439 Pts
64-Core 564
35% 564 Pts
5,094 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 67,715,661 CPUs tested

 Prices

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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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CPU GPU SSD HDD RAM MBD
Typical Core i7-7740X Builds (Compare 1,648 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 110%
UFO
Desktop
Desktop 96%
Nuclear submarine
Workstation
Workstation 95%
Nuclear submarine

Motherboard: Asus TUF X299 MARK 2

CPU
Core i7-7740XIntel  $281Bench 87%, 5,094 samples149x
GPU
GTX 1080-TiNvidia  $485Bench 124%, 840,268 samples168x
GTX 1080Nvidia  $400Bench 102%, 1,082,454 samples151x
RTX 2080-TiNvidia  $441Bench 156%, 357,946 samples92x
SSD
970 Evo Plus NVMe PCIe M.2 1TBSamsung  $95Bench 310%, 455,997 samples78x
970 Evo Plus NVMe PCIe M.2 500GBSamsung  $43Bench 276%, 367,854 samples60x
970 Evo NVMe PCIe M.2 1TBSamsung  $158Bench 297%, 331,647 samples55x
RAM
DDR4 3000 2OZ 2x8GBAdataBench 87%, 25,457 samples35x
Vengeance LPX DDR4 3000 C15 2x8GBCorsair  $43Bench 82%, 606,405 samples30x
Vengeance LPX DDR4 3000 C15 4x8GBCorsairBench 87%, 76,101 samples28x
EDIT WITH CUSTOM PC BUILDER Value: 75% - Very good Total price: $861

Popular Core i7-7740X compatible motherboards:

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

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  • - CPU tests include: integer, floating and string
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  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
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  • - Reports are generated and presented on userbenchmark.com
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Processor Rankings (Price vs Performance) April 2024 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™ i7-7740X X-series Processor (8M Cache, up to 4.50 GHz)
Code NameKaby Lake
Launch DateQ2'17
Processor Numberi7-7740X
# of Cores4
# of Threads8
Cache8 MB
Instruction Set64-bit
Instruction Set ExtensionsSSE4.1/4.2, AVX2
Embedded Options AvailableNo
Lithography14 nm
Recommended Price$339.00 - $350.00
Clock Speed4.30 GHz
Max Turbo Frequency4.50 GHz
Bus Speed8 GT/s DMI3
QPI Links0
Scalability1S Only
Max TDP112 W
Thermal Solution SpecificationPCG 2017X
Product BriefLink

Graphics

Processor GraphicsNone

Memory

Max Memory Size64 GB
Memory TypesDDR4-2666
Memory Channels2
ECC Memory SupportedNo

Expansion Options

PCI Express Revision3.0
PCI Express ConfigurationsUp to 1x16, 2x8, 1x8+2x4
Max # of PCI Express Lanes16

Data Protection

AES New InstructionsYes

Advanced Technologies

Virtualization Tech (VT-x)Yes
Intel 64Yes
Turbo Boost Tech2.0
Hyper-Threading TechYes
Virtualization for Directed I/O (VT-d)Yes

Package

Max CPU Configuration1
Sockets SupportedFCLGA2066

 Comments

Added n/a ago.
USA-User
Avatar level
9,834

Liked (edit your comment) Add link

12 days ago.

ESP-User
Avatar level
3,729

Poor

3 months ago.

para ser de gama extrema le faltan núcleos y solo soporta 64 gigas de ram,alto precio para lo que es

ARG-User
Avatar level
3,220

Excellent

6 years ago.

Es el mejor procesador de cuatro núcleos que se haya fabricado hasta la fecha 2018/01/27

HRV-User
Avatar level
2,322

Good

6 years ago.

Probably one of the worst possible solutions for anyone building a PC. It's rather expensive, offers practically no performance over the i7 7700K while equally priced Ryzen 7 1700 beats it almost everywhere, including in some games.

ColdSpy
Avatar level
330

Poor

4 years ago.

Kaby Lake-X CPUs is probably one of the Intel's most embarrassing release ever for their HEDT platform. Requires X299 motherboard and only offered 16 PCIe lanes whilst being only little better than i7-7700K.

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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
AMD vs Intel: Gaming performance 2012-2021
How does IPC compare between AMD's Ryzen and Intel's Kaby Lake?
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ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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