IntelBX80684I58400
Intel

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

  

4 Cores, 8 Threads @2.80 GHz, Kaby Lake G.
Release date ≈ Q2 2018.

Real World Speed
Performance profile from 312,606 user samples
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 / 1452
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
386 User Benchmarks
Best Bench: 83% Base clock 2.8 GHz, turbo 3.45 GHz (avg)
Worst Bench: 59% Base clock 2.8 GHz, turbo 2.6 GHz (avg)
Poor: 59% Great: 83%
SPEED RANK: 350th / 1452
Gaming
Gaming 73%
Battleship
Desktop
Desktop 76%
Battleship
Workstation
Workstation 60%
Gunboat
Effective Speed
Effective CPU Speed
81.8 % Faster effective speed.
+12%
72.9 %
Memory
Avg. Memory Latency
84.9 Pts +3% 82.2 Pts
1-Core
Avg. Single Core Speed
113 Pts Faster single-core speed.
+13%
99.9 Pts
2-Core
Avg. Dual Core Speed
224 Pts Faster dual-core speed.
+16%
193 Pts
4-Core
Avg. Quad Core Speed
434 Pts Faster quad-core speed.
+26%
345 Pts
8-Core
Avg. Octa Core Speed
564 Pts Slightly faster octa-core speed.
+8%
524 Pts
Memory
OC Memory Latency
94.2 Pts +2% 92.3 Pts
1-Core
OC Single Core Speed
120 Pts +2% 118 Pts
2-Core
OC Dual Core Speed
237 Pts Slightly faster OC dual-core speed.
+5%
225 Pts
4-Core
OC Quad Core Speed
471 Pts Faster OC quad-core speed.
+14%
413 Pts
8-Core
OC Octa Core Speed
657 Pts Slightly faster OC octa-core speed.
+9%
601 Pts
Market Share
Based on 68,075,744 CPUs tested
Market Share
Market Share (trailing 30 days)
0.89 % Insanely higher market share.
+∞%
0 %
User Rating
UBM User Rating
62 % More popular.
+24%
50 %
Age
Newest
80 Months 74+ Months Slightly more recent.
+8%
64-Core
OC Multi Core Speed
675 Pts Faster OC 64-core speed.
+12%
600 Pts
64-Core
Avg. Multi Core Speed
588 Pts Faster 64-core speed.
+11%
530 Pts
Launch Date
Launch Date
Q4'17 Q1'18
Cache
Cache
9 MB 6 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Max Turbo Frequency
Max Turbo Frequency
4.00 GHz 3.80 GHz
Bus Speed
Bus Speed
8 GT/s DMI3 8 GT/s DMI
Memory Types
Memory Types
DDR4-2666 DDR4-2400
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 630
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.00 GHz
Package Size
Package Size
37.5mm x 37.5mm 31mm x 58.5mm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16 or 2x8 or 1x8+2x4 Up to 1x8, 2x4
Max # of PCI Express Lanes
Max # of PCI Express Lanes
16 8

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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