Intel
IntelBX80684I58400

4 Cores, 4 Threads @3 GHz, Haswell.
Release date ≈ Q3 2014.

VS
About

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

Real World Speed
Performance profile from 144,065 user samples
5,100 User Benchmarks
Best Bench: 70% Base clock 3 GHz, turbo 3.7 GHz (avg)
Worst Bench: 52% Base clock 3 GHz, turbo 0.85 GHz (avg)
Poor: 52% Great: 70%
SPEED RANK: 185th / 1206
Gaming
Gaming 64%
Destroyer
Desktop
Desktop 66%
Battle cruiser
Workstation
Workstation 35%
Sail boat
138,965 User Benchmarks
Best Bench: 84% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 72% Base clock 2.8 GHz, turbo 0.8 GHz (avg)
Poor: 72% Great: 84%
SPEED RANK: 65th / 1206
Gaming
Gaming 80%
Battleship
Desktop
Desktop 80%
Aircraft carrier
Workstation
Workstation 56%
Gunboat
Effective Speed
Effective CPU Speed
64.1 % 79.6 % Faster effective speed.
+24%
1-Core
Avg. Single Core Mixed Speed
98.8 Pts 117 Pts Faster single-core speed.
+18%
2-Core
Avg. Dual Core Mixed Speed
191 Pts 230 Pts Faster dual-core speed.
+20%
4-Core
Avg. Quad Core Mixed Speed
355 Pts 449 Pts Faster quad-core speed.
+26%
8-Core
Avg. Octa Core Mixed Speed
361 Pts 636 Pts Much faster octa-core speed.
+76%
1-Core
OC Single Core Mixed Speed
109 Pts 122 Pts Slightly faster OC single-core speed.
+12%
2-Core
OC Dual Core Mixed Speed
208 Pts 242 Pts Faster OC dual-core speed.
+16%
4-Core
OC Quad Core Mixed Speed
391 Pts 477 Pts Faster OC quad-core speed.
+22%
8-Core
OC Octa Core Mixed Speed
390 Pts 692 Pts Much faster OC octa-core speed.
+77%
Market Share
Based on 22,712,438 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.05 % 0.95 % Insanely higher market share.
+1,800%
Value
Value For Money
72.4 % 87.2 % Better value.
+20%
User Rating
UBM User Rating
55 % 78 % Much more popular.
+42%
Price
Price (score)
$179 Slightly cheaper.
+11%
$200
Age
Newest
63+ Months 26 Months Much more recent.
+59%
64-Core
OC Multi Core Mixed Speed
393 Pts 695 Pts Much faster OC 64-core speed.
+77%
64-Core
Avg. Multi Core Mixed Speed
365 Pts 643 Pts Much faster 64-core speed.
+76%
Launch Date
Launch Date
Q2'14 Q4'17
Cache
Cache
6 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Embedded Options Available
Embedded Options Available
Yes No
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$192.00 - $202.00 N/A
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification
PCG 2013C PCG 2015C (65W)
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4600 Intel® UHD Graphics 630
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.05 GHz
Graphics Video Max Memory
Graphics Video Max Memory
2 GB 64 GB
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Revision
PCI Express Revision
Up to 3.0 3.0
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

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]

MORE DETAILS

Processor Rankings (Price vs Performance) December 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. 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.
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HDDRAMUSB
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