IntelBX80684I79700K
IntelBX80684I58400

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

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

Real World Speed
Performance profile from 110,273 user samples
31,587 User Benchmarks
Best Bench: 123% Base clock 3.6 GHz, turbo 5.15 GHz (avg)
Worst Bench: 90% Base clock 3.6 GHz, turbo 1.5 GHz (avg)
Poor: 90% Great: 123%
SPEED RANK: 13th / 1147
Gaming
Gaming 112%
UFO
Desktop
Desktop 108%
UFO
Workstation
Workstation 95%
Nuclear submarine
78,686 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 82% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Poor: 82% Great: 94%
SPEED RANK: 46th / 1147
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed
112 % Faster effective speed.
+26%
89.3 %
SC Mixed
Avg. Single Core Mixed Speed
142 Pts Faster single-core speed.
+21%
117 Pts
QC Mixed
Avg. Quad Core Mixed Speed
556 Pts Faster quad-core speed.
+23%
453 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1057 Pts Much faster multi-core speed.
+62%
654 Pts
SC Mixed
OC Single Core Mixed Speed
155 Pts Faster OC single-core speed.
+26%
123 Pts
QC Mixed
OC Quad Core Mixed Speed
611 Pts Faster OC quad-core speed.
+28%
477 Pts
MC Mixed
OC Multi Core Mixed Speed
1183 Pts Much faster OC multi-core speed.
+69%
699 Pts
Market Share
Based on 16,364,503 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.34 % 1.42 % Slightly higher market share.
+6%
Value
Value For Money
99.1 % 103 % +4%
User Rating
UBM User Rating
61 % 117 % Hugely more popular.
+92%
Price
Price (score)
$409 $199 Much cheaper.
+51%
Age
Newest
6 Months Much more recent.
+67%
18 Months
TDP
Thermal Design Power (TDP)
95 Watts 65 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores
8 cores Much higher core count.
+33%
6 cores
Threads
CPU Processing Threads
8 threads Much higher thread count.
+33%
6 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.6 GHz Faster base frequency.
+29%
2.8 GHz
Turbo Clock
Turbo Clock Speed
4.9 GHz Faster turbo frequency.
+23%
4 GHz
SC Int
Single Core Integer Speed
150 Pts Faster single-core int speed.
+27%
118 Pts
SC Float
Single Core Floating Point Speed
162 Pts Faster single-core fp speed.
+27%
128 Pts
QC Int
Quad Core Integer Speed
585 Pts Faster quad-core int speed.
+27%
460 Pts
QC Float
Quad Core Floating Point Speed
646 Pts Faster quad-core fp speed.
+30%
498 Pts
MC Int
Multi Core Integer Speed
1117 Pts Much faster multi-core int speed.
+67%
669 Pts
MC Float
Multi Core Floating Point Speed
1267 Pts Much faster multi-core fp speed.
+72%
738 Pts
Series
CPU Architecture
Coffee Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 UHD 630
Launch Date
Launch Date
Q4'18 Q4'17
Cache
Cache
12 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$374.00 - $385.00 N/A
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (65W)
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.05 GHz
TSX-NI
Intel® TSX-NI
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
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Intel’s Core i7-9700K is an unlocked 9th generation CPU, released alongside the i5-9600K and the i9-9900K. The 9700K is an 8 core, 8 thread processor based on the third iteration of Intel’s 14nm Coffee Lake architecture, which sees an increase in the number of cores available to mainstream consumers, in line with AMD’s Ryzen 7 offerings. The 9700K features 12 MB of cache, a 95W TDP and Intel UHD graphics 630. And 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 a base frequency of 3.6 GHz, rising to 4.6 GHz when all 8 cores are engaged and a single core boost frequency of 4.9 GHz (compared to 3.6 GHz, 4.7 GHz and 5.0 GHz for the flagship 9900K). This translates to similar single and quad core performance to the 9900K, but due to the higher number of threads, the 9900K has around a 50% higher multi-core benchmark than the 9700K. Currently most PC games do not engage more than 4 cores, so at $420 (15% cheaper than the 9900K), the 9700K offers better value for money to gamers. If instead, great multi-core performance is a necessity, at $290, the 8 core 16 thread Ryzen 7 2700X is a more prudent choice, with a 30% higher multi-core benchmark than the 9700K.  [Oct '18 CPUPro]

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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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Processor Rankings (Price vs Performance) April 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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CPUGPUSSD
Intel Core i7-8700K $339Nvidia GTX 1070 $379Samsung 850 Evo 250GB $100
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AMD Ryzen 5 1600 $115Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $93
HDDRAMUSB
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Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $711SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $100SanDisk Ultra Fit 32GB $12
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