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IntelBX80684I58600K
IntelBX80684I58400
▲ 1372,614 ▼

6 Cores, 6 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

VS
Copy
▲ 1142,610 ▼

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

Effective Speed 
+13%
Real World Speed
Performance profile from 122,181 user samples
Benchmark your CPU here
71,300 User Benchmarks
Best Bench: 120% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Worst Bench: 88% Base clock 3.6 GHz, turbo 1.05 GHz (avg)
Poor: 88% Great: 120%
SPEED RANK: 24th / 1143
Gaming
Gaming 101%
UFO
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 73%
Battleship
50,881 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: 42nd / 1143
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed 		101 % Slightly faster effective speed.
+13% 		89.3 %
Average User Bench 
+13%
SC Mixed
Avg. Single Core Mixed Speed 		132 Pts Slightly faster single-core speed.
+13% 		117 Pts
QC Mixed
Avg. Quad Core Mixed Speed 		514 Pts Slightly faster quad-core speed.
+13% 		453 Pts
MC Mixed
Avg. Multi Core Mixed Speed 		742 Pts Slightly faster multi-core speed.
+14% 		653 Pts
Peak Overclocked Bench 
+27%
SC Mixed
OC Single Core Mixed Speed 		156 Pts Faster OC single-core speed.
+27% 		123 Pts
QC Mixed
OC Quad Core Mixed Speed 		611 Pts Faster OC quad-core speed.
+28% 		479 Pts
MC Mixed
OC Multi Core Mixed Speed 		890 Pts Faster OC multi-core speed.
+27% 		700 Pts
Value & Sentiment 
+10%
Market Share
Based on 12,836,459 CPUs tested.
See market share leaders
Market Share
Market Share (trailing 30 days) 		1.52 % Higher market share.
+26% 		1.21 %
Value
Value For Money 		107 % Slightly better value.
+8% 		99.2 %
User Rating
UBM User Rating 		137 % More popular.
+20% 		114 %
Price
Price (score) 		$250 $220 Slightly cheaper.
+12%
Nice To Haves 
+13%
Age
Newest 		14 Months 14 Months
TDP
Thermal Design Power (TDP) 		95 Watts 65 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores 		6 cores 6 cores
Threads
CPU Processing Threads 		6 threads 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 		4.3 GHz Slightly faster turbo frequency.
+8% 		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 		586 Pts Faster quad-core int speed.
+27% 		461 Pts
QC Float
Quad Core Floating Point Speed 		648 Pts Faster quad-core fp speed.
+30% 		500 Pts
MC Int
Multi Core Integer Speed 		847 Pts Faster multi-core int speed.
+25% 		675 Pts
MC Float
Multi Core Floating Point Speed 		955 Pts Faster multi-core fp speed.
+29% 		739 Pts
Specifications 
Series
CPU Architecture 		Coffee Lake Coffee Lake
Socket
Motherboard Socket 		FCLGA1151 FCLGA1151
Graphics
Integrated Graphics 		UHD 630 UHD 630
Thermal Solution Specification
Thermal Solution Specification 		PCG 2015C (130W) PCG 2015C (65W)
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.15 GHz 1.05 GHz
TSX-NI
Intel® TSX-NI 		Yes No
vPro Tech
Intel® vPro™ Technology ‡ 		Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP) 		Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		Yes No

More specs » More specs »
Conclusion 
Average Bench 101%
Average Bench 89.3%
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The unlocked hex-core i5-8600K from Intel’s latest Coffee Lake generation of processors is the new flagship of the i5 series, succeeding the Kaby Lake quad-core i5-7600K. The 8th generation of processors brings the largest performance uplift since Sandy Bridge by adding more cores at each of the i3, i5 and i7 product lines. Like the other Coffee Lake processors, the i5-8600K is built upon optimized 14nm architecture, marginally improved upon from Kaby Lake and Skylake. The 8600K has a 95W TDP and a nominal stock clock of 3.6 GHz, which boosts to 4.1 GHz for all six cores, 4.2 GHz for dual/quad and 4.3 GHz for single core. Early benchmarks put the i5-8600K’s effective speed 15% ahead of the i5-7600K. A 50% increase in multi-core speed is explained by two additional cores and thanks to the quad-core clock bump from 4 GHz on the 7600K to 4.2 GHz on the 8600K there is also an additional 5% performance boost across all workloads. All Coffee Lake processors require a 300-series chipset, making a straight CPU upgrade unfeasible despite sharing the same socket as their Z270 predecessors. Even though most games still use less than 4 cores simultaneously, the i5-8600K is a great choice for gamers (especially streamers) but for $80 less, the 8350K which is faster than last years 7600K and only marginally weaker for gaming than the 8600K is certainly well worth considering as well. [Oct '17 CPUPro]

MORE DETAILS

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

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CPUGPUSSD
Intel Core i7-8700K $370Nvidia GTX 1070 $310Samsung 850 Evo 250GB $63
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $234Samsung 850 Evo 500GB $98
Intel Core i5-8600K $250Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
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