IntelBX80684I58400
Intel

6 Cores, 6 Threads @2.8GHz, Coffee Lake.
Release date: Q4 2017.

VS
About

2 Cores, 4 Threads @3.1 GHz, Sandy Bridge.
Release date ≤ Q4 2013.

Real World Speed
Performance profile from 138,380 user samples
109,239 User Benchmarks
Best Bench: 84% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 64% Base clock 2.8 GHz, turbo 1.25 GHz (avg)
Poor: 64% Great: 84%
SPEED RANK: 52nd / 1182
Gaming
Gaming 78%
Battleship
Desktop
Desktop 80%
Aircraft carrier
Workstation
Workstation 56%
Gunboat
29,141 User Benchmarks
Best Bench: 35% Base clock 3.1 GHz, turbo 3.1 GHz (avg)
Worst Bench: 21% Base clock 3.1 GHz, turbo 1.4 GHz (avg)
Poor: 21% Great: 35%
SPEED RANK: 550th / 1182
Gaming
Gaming 31%
Sail boat
Desktop
Desktop 45%
Speed boat
Workstation
Workstation 20%
Surfboard
Effective Speed
Effective CPU Speed
78.3 % Hugely faster effective speed.
+152%
31.1 %
1-Core
Avg. Single Core Mixed Speed
116 Pts Much faster single-core speed.
+58%
73.4 Pts
2-Core
Avg. Dual Core Mixed Speed
230 Pts Much faster dual-core speed.
+80%
128 Pts
4-Core
Avg. Quad Core Mixed Speed
447 Pts Hugely faster quad-core speed.
+142%
185 Pts
8-Core
Avg. Octa Core Mixed Speed
633 Pts Hugely faster octa-core speed.
+237%
188 Pts
64-Core
Avg. Multi Core Mixed Speed
641 Pts Hugely faster 64-core speed.
+234%
192 Pts
1-Core
OC Single Core Mixed Speed
122 Pts Much faster OC single-core speed.
+49%
81.7 Pts
2-Core
OC Dual Core Mixed Speed
242 Pts Much faster OC dual-core speed.
+54%
157 Pts
4-Core
OC Quad Core Mixed Speed
475 Pts Hugely faster OC quad-core speed.
+126%
210 Pts
8-Core
OC Octa Core Mixed Speed
694 Pts Hugely faster OC octa-core speed.
+230%
210 Pts
64-Core
OC Multi Core Mixed Speed
698 Pts Hugely faster OC 64-core speed.
+231%
211 Pts
Market Share
Based on 19,419,955 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.06 % Hugely higher market share.
+405%
0.21 %
Value
Value For Money
88.3 % Hugely better value.
+103%
43.6 %
User Rating
UBM User Rating
71 % More popular.
+18%
60 %
Price
Price (score)
$179 $81 Much cheaper.
+55%
Age
Newest
22 Months Much more recent.
+68%
68+ Months
Launch Date
Launch Date
Q4'17 Q1'11
Cache
Cache
9 MB 3 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX
Lithography
Lithography
14 nm 32 nm
Recommended Price
Recommended Customer Price
N/A $120.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2666 DDR3 1066/1333
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 2000
Graphics Base Frequency
Graphics Base Frequency
350 MHz 850 MHz
# of Displays Supported
# of Displays Supported ‡
3 2
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.1 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
Yes No
AES New Instructions
Intel® AES New Instructions
Yes No
PCI Express Revision
PCI Express Revision
3.0 2.0

More specs » More specs »
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The i5-8400 is a competitively priced hex-core processor from Intel’s 8th generation of Core processors (Coffee Lake). Along with the release of the unlocked i5-8600K, this is the first time that six-core processors have featured in the i5 line-up. Like the other Coffee Lake processors, the i5-8400 is based upon an improved version of Intel’s 14nm architecture which featured in both Skylake and Kaby Lake. Early benchmarks reveal that for average quad core usage (most games employ a maximum of four cores) the i5-8400 performs way above its pay grade. It achieves quad core mixed speeds close to Intel’s outgoing 2017 flagship the $300, quad-core, 8 thread i7-7700k, which to date has been a strong favourite for high-end gaming setups. On paper, the i5-8400 has a base clock of 2.8 GHz (Intel are significantly downplaying the performance of this SKU by giving it a relatively low nominal base clock), an all core boost of 3.8 GHz (this is the effective base clock figure that counts) and a single core boost of 4 GHz. This compares reasonably well to the i5-8600K which has a base clock of 3.6 GHz, all core boost of 4.1 GHz and a single core boost of 4.3 GHz. The i5-8400 also features 9MB of L3 cache and an energy-thrifty TDP of 65W. Priced at under $190, the i5-8400 offers fantastic value for money. Unfortunately, like the other Coffee Lake processors, the i5-8400 will require a new 300 series motherboard, and at the time of writing, the only available version is Intel’s high-end Z370 which isn't an ideal pairing for the i5-8400. The Z series motherboards are designed to cater for the unlocked and overclockable "K" SKUs. Cheaper 300 series motherboards will be available in 2018 at which time the 8400 will offer even better value for money. [Oct '17 CPUPro]

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does jack [Jun '19 Liommm]

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Processor Rankings (Price vs Performance) August 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. 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

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  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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