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IntelBX80684I58400
Intel
▲ 625,401 ▼

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

VS
▲ 551,701 ▼
  

4 Cores, 4 Threads @2.50 GHz, Kaby Lake.
Release date ≈ Q1 2017.

Effective Speed 
+45%
Real World Speed
Performance profile from 483,091 user samples
Benchmark your CPU here
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: 231st / 1468
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
170,871 User Benchmarks
Best Bench: 69% Base clock 2.5 GHz, turbo 3.1 GHz (avg)
Worst Bench: 32% Base clock 2.5 GHz, turbo 1.85 GHz (avg)
Poor: 32% Great: 69%
SPEED RANK: 673rd / 1468
Gaming
Gaming 57%
Gunboat
Desktop
Desktop 62%
Destroyer
Workstation
Workstation 42%
Speed boat
Effective Speed
Effective CPU Speed 		81.8 % Much faster effective speed.
+45% 		56.5 %
Average Score 
+55%
Memory
Avg. Memory Latency 		84.9 Pts Lower memory latency.
+23% 		68.8 Pts
1-Core
Avg. Single Core Speed 		113 Pts Much faster single-core speed.
+36% 		83.3 Pts
2-Core
Avg. Dual Core Speed 		224 Pts Much faster dual-core speed.
+38% 		162 Pts
4-Core
Avg. Quad Core Speed 		434 Pts Much faster quad-core speed.
+71% 		254 Pts
8-Core
Avg. Octa Core Speed 		564 Pts Hugely faster octa-core speed.
+108% 		271 Pts
Overclocked Score 
+39%
Memory
OC Memory Latency 		94.2 Pts Lower OC memory latency.
+10% 		85.4 Pts
1-Core
OC Single Core Speed 		120 Pts Faster OC single-core speed.
+25% 		95.8 Pts
2-Core
OC Dual Core Speed 		237 Pts Faster OC dual-core speed.
+25% 		190 Pts
4-Core
OC Quad Core Speed 		471 Pts Much faster OC quad-core speed.
+41% 		334 Pts
8-Core
OC Octa Core Speed 		657 Pts Hugely faster OC octa-core speed.
+93% 		340 Pts
Value & Sentiment 
+196%
Market Share
Based on 69,041,209 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.91 % Hugely higher market share.
+379% 		0.19 %
User Rating
UBM User Rating 		62 % More popular.
+13% 		55 %
Nice To Haves 
+74%
Age
Newest 		85 Months Slightly more recent.
+10% 		94+ Months
64-Core
OC Multi Core Speed 		675 Pts Hugely faster OC 64-core speed.
+98% 		341 Pts
64-Core
Avg. Multi Core Speed 		588 Pts Hugely faster 64-core speed.
+114% 		275 Pts
Specifications 
Launch Date
Launch Date 		Q4'17 Q1'17
Cache
Cache 		9 MB 6 MB
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX 2.0
Max Turbo Frequency
Max Turbo Frequency 		4.00 GHz 3.50 GHz
Memory Types
Memory Types 		DDR4-2666 DDR4-2400, LPDDR3-2133, DDR3L-1600
Processor Graphics
Processor Graphics ‡ 		Intel® UHD Graphics 630 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency 		350 MHz 350.00 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.05 GHz 1.00 GHz
Package Size
Package Size 		37.5mm x 37.5mm 42mm x 28mm
TSX-NI
Intel® TSX-NI 		No Yes
PCI Express Configurations
PCI Express Configurations ‡ 		Up to 1x16 or 2x8 or 1x8+2x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
Conclusion 
Average Bench 81.8%
Average Bench 56.5%

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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