IntelCL8068404121817
IntelBX80684I58400
  

6 Cores, 12 Threads @2.60 GHz, 45 W.
Release date ≈ Q2 2019.

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

Real World Speed
Performance profile from 640,402 user samples
328,182 User Benchmarks
Best Bench: 87% Base clock 2.6 GHz, turbo 3.85 GHz (avg)
Worst Bench: 49% Base clock 2.6 GHz, turbo 0.8 GHz (avg)
Poor: 49% Great: 87%
SPEED RANK: 342nd / 1456
Gaming
Gaming 73%
Battleship
Desktop
Desktop 76%
Battleship
Workstation
Workstation 62%
Destroyer
312,220 User Benchmarks
Best Bench: 89% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 61% Base clock 2.8 GHz, turbo 0.8 GHz (avg)
Poor: 61% Great: 89%
SPEED RANK: 219th / 1456
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
Effective Speed
Effective CPU Speed
73.3 % 81.8 % Faster effective speed.
+12%
Memory
Avg. Memory Latency
80.9 Pts 84.9 Pts +5%
1-Core
Avg. Single Core Speed
104 Pts 113 Pts Slightly faster single-core speed.
+9%
2-Core
Avg. Dual Core Speed
198 Pts 224 Pts Faster dual-core speed.
+13%
4-Core
Avg. Quad Core Speed
355 Pts 434 Pts Faster quad-core speed.
+22%
8-Core
Avg. Octa Core Speed
543 Pts 564 Pts +4%
Memory
OC Memory Latency
93.1 Pts 94.2 Pts +1%
1-Core
OC Single Core Speed
123 Pts +2% 120 Pts
2-Core
OC Dual Core Speed
241 Pts +2% 237 Pts
4-Core
OC Quad Core Speed
456 Pts 471 Pts +3%
8-Core
OC Octa Core Speed
728 Pts Faster OC octa-core speed.
+11%
657 Pts
Market Share
Based on 68,097,896 CPUs tested
Market Share
Market Share (trailing 30 days)
0.79 % 0.88 % Higher market share.
+11%
User Rating
UBM User Rating
57 % 62 % Slightly more popular.
+9%
Age
Newest
62+ Months More recent.
+22%
80 Months
64-Core
OC Multi Core Speed
896 Pts Much faster OC 64-core speed.
+33%
675 Pts
64-Core
Avg. Multi Core Speed
657 Pts Faster 64-core speed.
+12%
588 Pts
Launch Date
Launch Date
Q2'19 Q4'17
Cache
Cache
12 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 SSE4.1/4.2, AVX2
Max Turbo Frequency
Max Turbo Frequency
4.50 GHz 4.00 GHz
Bus Speed
Bus Speed
8 GT/s DMI 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
128 GB 64 GB
Memory Types
Memory Types
DDR4-2666, LPDDR3-2133 DDR4-2666
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.05 GHz
Package Size
Package Size
42mm x 28mm 37.5mm x 37.5mm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

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Superseded by the faster 10th Gen 10750H [Apr '20 CPUPro]

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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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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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