IntelBX80684I58400
Intel

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

2 Cores, 4 Threads @2.9 GHz, Haswell.
Release date ≈ Q3 2014.

Real World Speed
Performance profile from 317,484 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: 222nd / 1459
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
5,264 User Benchmarks
Best Bench: 64% Base clock 2.9 GHz, turbo 2.9 GHz (avg)
Worst Bench: 43% Base clock 2.9 GHz, turbo 2.9 GHz (avg)
Poor: 43% Great: 64%
SPEED RANK: 674th / 1459
Gaming
Gaming 56%
Gunboat
Desktop
Desktop 63%
Destroyer
Workstation
Workstation 40%
Speed boat
Effective Speed
Effective CPU Speed
81.8 % Much faster effective speed.
+46%
56.2 %
Memory
Avg. Memory Latency
84.9 Pts Slightly lower memory latency.
+9%
77.7 Pts
1-Core
Avg. Single Core Speed
113 Pts Much faster single-core speed.
+49%
75.6 Pts
2-Core
Avg. Dual Core Speed
224 Pts Much faster dual-core speed.
+67%
134 Pts
4-Core
Avg. Quad Core Speed
434 Pts Hugely faster quad-core speed.
+115%
202 Pts
8-Core
Avg. Octa Core Speed
564 Pts Hugely faster octa-core speed.
+172%
207 Pts
Memory
OC Memory Latency
94.2 Pts +3% 91.4 Pts
1-Core
OC Single Core Speed
120 Pts Much faster OC single-core speed.
+41%
85.1 Pts
2-Core
OC Dual Core Speed
237 Pts Much faster OC dual-core speed.
+51%
157 Pts
4-Core
OC Quad Core Speed
471 Pts Hugely faster OC quad-core speed.
+107%
228 Pts
8-Core
OC Octa Core Speed
657 Pts Hugely faster OC octa-core speed.
+188%
228 Pts
Market Share
Based on 68,245,994 CPUs tested
Market Share
Market Share (trailing 30 days)
0.81 % Insanely higher market share.
+8,000%
0.01 %
Value
Value For Money
106 % Better value.
+24%
85.6 %
User Rating
UBM User Rating
62 % More popular.
+22%
51 %
Price
Price (score)
$107 $60 Much cheaper.
+44%
Age
Newest
81 Months Much more recent.
+32%
119+ Months
64-Core
OC Multi Core Speed
675 Pts Hugely faster OC 64-core speed.
+195%
229 Pts
64-Core
Avg. Multi Core Speed
588 Pts Hugely faster 64-core speed.
+184%
207 Pts
Launch Date
Launch Date
Q4'17 Q3'13
Cache
Cache
9 MB 3 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX 2.0
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
N/A $117.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) PCG 2013A
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2666 DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
ECC Memory Supported
ECC Memory Supported ‡
No Yes
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD graphics 4400
Graphics Base Frequency
Graphics Base Frequency
350 MHz 200 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.15 GHz
Graphics Video Max Memory
Graphics Video Max Memory
64 GB 2 GB
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
PCI Express Revision
PCI Express Revision
3.0 Up to 3.0
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16 or 2x8 or 1x8+2x4 Up to 1x16, 2x8, 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]

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