IntelBX80684I58400
IntelBX80684I38100

6 Cores, 6 Threads
@2.8GHz Coffee Lake (2017)

4 Cores, 4 Threads
@3.6GHz Coffee Lake (2017)

Real World Speed
Performance profile from 22,264 user samples
15,113 User Benchmarks
Best Bench: 96% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 83% Base clock 2.8 GHz, turbo 2.8 GHz (avg)
Poor: 83% Great: 96%
SPEED RANK: 30th / 1110
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
7,151 User Benchmarks
Best Bench: 86% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Worst Bench: 65% Base clock 3.6 GHz, turbo 2.15 GHz (avg)
Poor: 65% Great: 86%
SPEED RANK: 62nd / 1110
Gaming
Gaming 80%
Battleship
Desktop
Desktop 78%
Battleship
Workstation
Workstation 49%
Yacht
Effective Speed
Effective CPU Speed
91.3 % Slightly faster effective speed.
+14%
79.9 %
SC Mixed
Avg. Single Core Mixed Speed
120 Pts Slightly faster single-core speed.
+9%
110 Pts
QC Mixed
Avg. Quad Core Mixed Speed
463 Pts Slightly faster quad-core speed.
+12%
414 Pts
MC Mixed
Avg. Multi Core Mixed Speed
674 Pts Much faster multi-core speed.
+59%
425 Pts
SC Mixed
OC Single Core Mixed Speed
125 Pts Slightly faster OC single-core speed.
+10%
114 Pts
QC Mixed
OC Quad Core Mixed Speed
485 Pts Slightly faster OC quad-core speed.
+7%
452 Pts
MC Mixed
OC Multi Core Mixed Speed
720 Pts Much faster OC multi-core speed.
+58%
455 Pts
Market Share
Based on 9,365,776 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.22 % Hugely higher market share.
+149%
0.49 %
Value
Value For Money
110 % 113 % +3%
User Rating
UBM User Rating
104 % Much more popular.
+49%
70 %
Price
Price (score)
$179 $117 Much cheaper.
+35%
Age
Newest
8 Months 8 Months
TDP
Thermal Design Power (TDP)
65 Watts 65 Watts
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores
Threads
CPU Processing Threads
6 threads Much higher thread count.
+50%
4 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
2.8 GHz 3.6 GHz Faster base frequency.
+29%
Turbo Clock
Turbo Clock Speed
4 GHz Slightly faster turbo frequency.
+11%
3.6 GHz
SC Int
Single Core Integer Speed
122 Pts Slightly faster single-core int speed.
+10%
111 Pts
SC Float
Single Core Floating Point Speed
129 Pts Slightly faster single-core fp speed.
+10%
117 Pts
QC Int
Quad Core Integer Speed
473 Pts Slightly faster quad-core int speed.
+7%
441 Pts
QC Float
Quad Core Floating Point Speed
501 Pts Slightly faster quad-core fp speed.
+7%
467 Pts
MC Int
Multi Core Integer Speed
700 Pts Much faster multi-core int speed.
+58%
442 Pts
MC Float
Multi Core Floating Point Speed
743 Pts Much faster multi-core fp speed.
+58%
469 Pts
Series
CPU Architecture
Coffee Lake (2017) Coffee Lake (2017)
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 UHD 630
Cache
Cache
9 MB 6 MB
Memory Types
Memory Types
DDR4-2666 DDR4-2400
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.10 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No

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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Intel’s i3-8100 from their 8th generation of Core processors is a mainstream quad-core CPU. It is the entry model of the latest Coffee Lake line up with a clock speed of 3.6 GHz. Previously, i3 Kaby Lake processors had two cores with hyperthreading, but now, i3 Coffee Lake processors have 4 cores and offer much better value for money in terms of dollars per core. With a performance profile that closely matches last years mid range Kaby Lake i5's (the then go-to mid range gaming choice) and a price tag of just $120, the i3-8100 represents excellent value for money. Unfortunately, like all Coffe Lake processors, the i3-8100 does require a new 300-series motherboard even though it shares the same LGA1151 socket as the previous generation of Kaby Lake 200 motherboards. Intel were clearly mindful of AMD's similarly priced quad core Ryzen 3 1200 which achieves very comparable single, and quad-core benchmarks to the i3-8100.  [Oct '17 CPUPro]

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Processor Rankings (Price vs Performance) June 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

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
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CPUGPUSSD
Intel Core i7-8700K $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $104
AMD Ryzen 5 1600 $175Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $138
Intel Core i5-8600K $222AMD RX 480 $280Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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