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Review: Intel Core i7-8700K and Core i5-8400 (14nm Coffee Lake)

by Tarinder Sandhu on 5 October 2017, 14:00

Tags: Intel (NASDAQ:INTC)

Quick Link: HEXUS.net/qadlya

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Test Methodology

Intel Core i7-8700K and Core i5-8400 Specifications


Intel Core Processor Configurations

CPU
Core i9-7980XE
Core i9-7900X
Core i7-7820X
Core i7-6950X
Core i7-6900K
Core i7-8700K
Core i5-8400
Core i7-7700K
Core i5-7600K
Core i3-7350K
CPU Base Clock
2.6GHz
3.3GHz
3.6GHz
3.0GHz
3.2GHz
3.7GHz
2.8GHz
4.2GHz
3.8GHz
4.2GHz
CPU Turbo Clock
4.4GHz
4.5GHz
4.5GHz
3.5GHz
3.7GHz
4.7GHz
4.0GHz
4.5GHz
4.2GHz
-
CPU Cache
24.75MB
13.75MB
11MB
25MB
20MB
12MB
9MB
6MB
4MB
3MB
CPU Cores / Threads
18 / 36
10 / 20
8 / 16
10 / 20
8 / 16
6 / 12
6 / 6
4 / 8
4 / 4
2 / 4
CPU TDP
165W
140W
140W
140W
140W
95W
65W
91W
60W
51W
Integrated Graphics
-
-
-
-
-
UHD 630
UHD 630
HD 630
HD 630
HD 630
IGP Base Clock
-
-
-
-
-
350MHz
350MHz
350MHz
350MHz
350MHz
IGP Turbo Clock
-
-
-
-
-
1,200MHz
1,050MHz
1,150MHz
1,150MHz
1,100MHz
Socket
LGA 2066
LGA 2011v3
LGA 1151
Lithography
14nm
Motherboard
Asus Prime X299-A
Asus X99 Strix Gaming
Asus Z370-F Gaming
Asus Z270-E Gaming
BIOS
0802
0501
1401
0410
0801
Memory
Corsair Dominator 32GB DDR4
Corsair Vengeance 32GB DDR4
Crucial Ballistix 32GB DDR4
Memory Config
4x8GB
4x8GB
2x16GB
Memory Timings
14-16-16-36-2T
15-15-15-36-1T
16-16-16-38-2T
Memory Speed
2,666MHz
2,400MHz
2,666MHz
2,400MHz
Disk Drive
SK hynix Canvas SC300 (512GB)
Power Supply
be quiet Dark Power Pro 11 (1,000W)
Graphics Card
EVGA GeForce GTX 1080 FTW (378.66)
CPU Cooler
Noctua NH-D15S
Operating System
Microsoft Windows 10 (64-bit)

AMD Ryzen Processor Configurations

CPU
Ryzen 7 1800X
Ryzen 7 1700X
Ryzen 7 1700
Ryzen 5 1600X
Ryzen 5 1600
Ryzen 5 1500X
Ryzen 5 1400
Ryzen 3 1300X
CPU Base Clock
3.6GHz
3.4GHz
3.0GHz
3.6GHz
3.2GHz
3.5GHz
3.2GHz
3.5GHz
CPU Turbo Clock
4.0GHz
3.8GHz
3.7GHz
4.0GHz
3.6GHz
3.7GHz
3.4GHz
3.7GHz
CPU L3 Cache
16MB
16MB
16MB
16MB
16MB
16MB
8MB
8MB
CPU Cores / Threads
8 / 16
8 / 16
8 / 16
6 / 12
6 / 12
4 / 8
4 / 8
4 / 4
CPU TDP
95W
95W
65W
95W
65W
65W
65W
65W
Integrated Graphics
-
-
-
-
-
-
-
-
IGP Base Clock
-
-
-
-
-
-
-
-
IGP Turbo Clock
-
-
-
-
-
-
-
-
Socket
AM4
AM4
AM4
AM4
AM4
AM4
AM4
AM4
Lithography
14nm
Motherboard
Asus Crosshair VI Hero
Gigabyte AB350-Gaming 3
BIOS
5704 (1002 for Ryzen 5)
F7
Memory
Corsair Vengeance 32GB DDR4
Memory Config
4x8GB
Memory Timings
16-17-17-36-1T
Memory Speed
2,666MHz
Disk Drive
SK hynix Canvas SC300 (512GB)
Power Supply
be quiet Dark Power Pro 11 (1,000W)
Graphics Card
EVGA GeForce GTX 1080 FTW (378.66)
CPU Cooler
Noctua NH-D15S
Operating System
Microsoft Windows 10 (64-bit)

AMD Ryzen Threadripper Processor Configurations

CPU
Threadripper 1950X
Threadripper 1920X
CPU Base Clock
3.4GHz
3.5GHz
CPU Turbo Clock
4.0GHz
4.0GHz
CPU L3 Cache
32MB
32MB
CPU Cores / Threads
16 / 32
12 / 24
CPU TDP
180W
180W
Integrated Graphics
-
-
IGP Base Clock
-
-
IGP Turbo Clock
-
-
Socket
TR4
TR4
Lithography
14nm
Motherboard
Asus X399 Zenith Extreme
BIOS
9960
Memory
G.Skill Trident Z RGB 32GB DDR4
Memory Config
4x8GB
Memory Timings
16-17-17-36-1T
Memory Speed
3,200MHz
Disk Drive
Samsung 960 Pro (512GB)
Power Supply
be quiet Dark Power Pro 11 (1,000W)
Graphics Card
EVGA GeForce GTX 1080 FTW (378.66)
CPU Cooler
Thermaltake Riing 360 AIO
Operating System
Microsoft Windows 10 (64-bit)

Benchmark Suite

CPU Benchmarks
HEXUS PiFast Our number-crunching benchmark stresses a single core by calculating Pi to 10m places
Cinebench Using Cinebench's multi-CPU render, this cross-platform benchmark stresses all cores
HandBrake Free-to-use video encoder that stresses all CPU cores (64-bit)
Memory Benchmarks
AIDA64 Benchmark that analyses memory bandwidth and latency
Gaming Benchmarks (GeForce GTX 1080)
3DMark Time Spy Graphics benchmark run using the Fire Strike Extreme and Time Spy tests
VRMark Virtual reality benchmark run using the Orange Room test
Deus Ex: Mankind Divided 2,560x1,440, ultra settings
Hitman 2,560x1,440, ultra settings
Miscellaneous Benchmarks
Power Consumption To emulate real-world usage scenarios, we record system-wide mains power draw when idle, when encoding video via HandBrake and while playing Deus Ex: Mankind Divided

Notes

Intel supplied HEXUS with the Core i7-8700K and Core i5-8400 processors for technical evaluation. As you know, the K suffix denotes the processor is unlocked, whereas the Core i5-8400 is locked with respect to the multiplier. Still, at $183, it costs about the same as a Core i3-7350K but has six cores instead of two.

In terms of price, the comparisons to look out for, with respect to AMD, is the Ryzen 7 1700 (8C/16T, $329) against the Core i7-8700K (6C/12T, $353) and Ryzen 5 1500X (4C/8T, $182) against the Core i5-8400 (6C/6T, $182).