IntelBX80684I58400
IntelCL8068403373614

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

  

Release date ≈ Q2 2018.

Real World Speed
Performance profile from 40,097 user samples
40,070 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 80% Base clock 2.8 GHz, turbo 2.8 GHz (avg)
Poor: 80% Great: 94%
SPEED RANK: 33rd / 1129
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
27 User Benchmarks
Best Bench: 92% Base clock 2.5 GHz, turbo 3.95 GHz (avg)
Worst Bench: 59% Base clock 2.5 GHz, turbo 2.5 GHz (avg)
Poor: 59% Great: 92%
SPEED RANK: 58th / 1129
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 59%
Gunboat
Effective Speed
Effective CPU Speed
89 % Slightly faster effective speed.
+9%
81.7 %
SC Mixed
Avg. Single Core Mixed Speed
117 Pts 118 Pts +1%
QC Mixed
Avg. Quad Core Mixed Speed
452 Pts Slightly faster quad-core speed.
+14%
397 Pts
MC Mixed
Avg. Multi Core Mixed Speed
654 Pts Slightly faster multi-core speed.
+13%
581 Pts
SC Mixed
OC Single Core Mixed Speed
122 Pts 129 Pts Slightly faster OC single-core speed.
+6%
QC Mixed
OC Quad Core Mixed Speed
477 Pts 492 Pts +3%
MC Mixed
OC Multi Core Mixed Speed
701 Pts +3% 683 Pts
Market Share
Based on 11,511,820 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.41 % Insanely higher market share.
+∞%
0 %
User Rating
UBM User Rating
115 % Hugely more popular.
+125%
51 %
Age
Newest
12 Months 3+ Months Much more recent.
+75%
SC Int
Single Core Integer Speed
118 Pts 127 Pts Slightly faster single-core int speed.
+8%
SC Float
Single Core Floating Point Speed
127 Pts 134 Pts Slightly faster single-core fp speed.
+6%
QC Int
Quad Core Integer Speed
460 Pts 470 Pts +2%
QC Float
Quad Core Floating Point Speed
499 Pts 511 Pts +2%
MC Int
Multi Core Integer Speed
676 Pts Slightly faster multi-core int speed.
+7%
629 Pts
MC Float
Multi Core Floating Point Speed
739 Pts +2% 726 Pts
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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) October 2018 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. 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

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  • 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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