IntelBX80684I58400
IntelBX80684I79700K

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

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About

8 Cores, 8 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2018.

Real World Speed
Performance profile from 245,074 user samples
138,965 User Benchmarks
Best Bench: 84% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 72% Base clock 2.8 GHz, turbo 0.8 GHz (avg)
Poor: 72% Great: 84%
SPEED RANK: 65th / 1206
Gaming
Gaming 80%
Battleship
Desktop
Desktop 80%
Aircraft carrier
Workstation
Workstation 56%
Gunboat
106,109 User Benchmarks
Best Bench: 109% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Worst Bench: 79% Base clock 0.8 GHz, turbo 0.8 GHz (avg)
Poor: 79% Great: 109%
SPEED RANK: 4th / 1206
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 89%
Aircraft carrier
Effective Speed
Effective CPU Speed
79.6 % 98.9 % Faster effective speed.
+24%
1-Core
Avg. Single Core Mixed Speed
117 Pts 142 Pts Faster single-core speed.
+21%
2-Core
Avg. Dual Core Mixed Speed
230 Pts 283 Pts Faster dual-core speed.
+23%
4-Core
Avg. Quad Core Mixed Speed
449 Pts 561 Pts Faster quad-core speed.
+25%
8-Core
Avg. Octa Core Mixed Speed
636 Pts 1067 Pts Much faster octa-core speed.
+68%
1-Core
OC Single Core Mixed Speed
122 Pts 156 Pts Faster OC single-core speed.
+28%
2-Core
OC Dual Core Mixed Speed
242 Pts 312 Pts Faster OC dual-core speed.
+29%
4-Core
OC Quad Core Mixed Speed
477 Pts 623 Pts Much faster OC quad-core speed.
+31%
8-Core
OC Octa Core Mixed Speed
692 Pts 1213 Pts Much faster OC octa-core speed.
+75%
Market Share
Based on 22,639,003 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.99 % 2.27 % Hugely higher market share.
+129%
Value
Value For Money
87.2 % 91.4 % +5%
User Rating
UBM User Rating
77 % 169 % Hugely more popular.
+119%
Price
Price (score)
$200 Much cheaper.
+46%
$369
Age
Newest
26 Months 13 Months Much more recent.
+50%
TDP
Thermal Design Power (TDP)
65 Watts Much more energy efficient.
+32%
95 Watts
Cores
CPU Processing Cores
6 cores 8 cores Much higher core count.
+33%
Threads
CPU Processing Threads
6 threads 8 threads Much higher thread count.
+33%
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 4.9 GHz Faster turbo frequency.
+23%
64-Core
OC Multi Core Mixed Speed
695 Pts 1222 Pts Much faster OC 64-core speed.
+76%
64-Core
Avg. Multi Core Mixed Speed
643 Pts 1082 Pts Much faster 64-core speed.
+68%
Series
CPU Architecture
Coffee Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 UHD 630
Launch Date
Launch Date
Q4'17 Q4'18
Cache
Cache
9 MB 12 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Recommended Price
Recommended Customer Price
N/A $374.00 - $385.00
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) PCG 2015D (130W)
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.20 GHz
TSX-NI
Intel® TSX-NI
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
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 »
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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

Intel’s Core i7-9700K is an unlocked 9th generation Coffee Lake CPU. It is an 8 core, 8 thread processor. The 9700K features 12 MB of cache, a 95W TDP and Intel UHD 630 graphics. Like the other 9th generation chips, it is compatible with Intel’s new Z390 chipset as well as last years Z370 chipset (with an updated BIOS). The 9700K has stock base / boost clocks of 3.6 / 4.6 GHz and a single core boost of 4.9 GHz (compared to 3.6, 4.7 and 5.0 GHz for the flagship 9900K). This translates to almost identical single, quad and octa core performance between the 9900K and 9700K. Mainstream PC games do not benefit from more than eight threads, so at $350 (25% cheaper than the 9900K), the 9700K offers far better value for money to gamers. That said for purely gaming there is very little reason not to consider the i5-9600K which, when overclocked, offers almost equivalent gaming performance but at a 35% discount[Oct '18 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) December 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. Effective speed is adjusted by current prices to yield a value for money rating. 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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CPUGPUSSD
Intel Core i5-9400F $145Nvidia GTX 1660S (Super) $260Crucial MX500 250GB $45
Intel Core i5-9600K $200AMD RX 590 $180Samsung 850 Evo 120GB $58
Intel Core i7-9700K $369Nvidia GTX 1650S (Super) $160Samsung 850 Pro 512GB $230
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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