IntelBX80684I58400
AMDYD299XAZAFWOF

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

Release date ≈ Q3 2018.

Real World Speed
Performance profile from 96,838 user samples
95,798 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 78% Base clock 0.8 GHz, turbo 0.8 GHz (avg)
Poor: 78% Great: 94%
SPEED RANK: 52nd / 1159
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 64%
Destroyer
1,040 User Benchmarks
Best Bench: 145% Base clock 4.15 GHz, turbo 4.1 GHz (avg)
Worst Bench: 103% Base clock 3 GHz, turbo 0.95 GHz (avg)
Poor: 103% Great: 145%
SPEED RANK: 1st / 1159
Gaming
Gaming 130%
UFO
Desktop
Desktop 129%
UFO
Workstation
Workstation 283%
UFO
Effective Speed
Effective CPU Speed
88.8 % 130 % Much faster effective speed.
+46%
SC Mixed
Avg. Single Core Mixed Speed
117 Pts Slightly faster single-core speed.
+5%
111 Pts
QC Mixed
Avg. Quad Core Mixed Speed
451 Pts Slightly faster quad-core speed.
+8%
416 Pts
MC Mixed
Avg. Multi Core Mixed Speed
649 Pts 4154 Pts Hugely faster multi-core speed.
+540%
SC Mixed
OC Single Core Mixed Speed
122 Pts 123 Pts +1%
QC Mixed
OC Quad Core Mixed Speed
478 Pts +2% 468 Pts
MC Mixed
OC Multi Core Mixed Speed
699 Pts 4896 Pts Hugely faster OC multi-core speed.
+600%
Market Share
Based on 17,926,818 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.29 % Insanely higher market share.
+3,125%
0.04 %
Value
Value For Money
103 % Much better value.
+51%
68.3 %
User Rating
UBM User Rating
111 % Much more popular.
+32%
84 %
Price
Price (score)
$196 Hugely cheaper.
+88%
$1,617
Age
Newest
20 Months 10+ Months Much more recent.
+50%
SC Int
Single Core Integer Speed
118 Pts 118 Pts
SC Float
Single Core Floating Point Speed
128 Pts 128 Pts
QC Int
Quad Core Integer Speed
460 Pts +2% 449 Pts
QC Float
Quad Core Floating Point Speed
500 Pts +3% 487 Pts
MC Int
Multi Core Integer Speed
668 Pts 4629 Pts Hugely faster multi-core int speed.
+593%
MC Float
Multi Core Floating Point Speed
739 Pts 5052 Pts Hugely faster multi-core fp speed.
+584%
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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

Average single core performance counterbalanced with monstrous multi core capabilities. [Aug '18 Juhg]

MORE DETAILS

Processor Rankings (Price vs Performance) June 2019 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

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • 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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