IntelBX80684I99900K
IntelBX80684I58600K

8 Cores, 16 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2018.

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

Real World Speed
Performance profile from 189,834 user samples
71,421 User Benchmarks
Best Bench: 110% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 79% Base clock 3.6 GHz, turbo 2.35 GHz (avg)
Poor: 79% Great: 110%
SPEED RANK: 2nd / 1182
Gaming
Gaming 101%
UFO
Desktop
Desktop 101%
UFO
Workstation
Workstation 101%
UFO
118,413 User Benchmarks
Best Bench: 106% Base clock 3.6 GHz, turbo 5.4 GHz (avg)
Worst Bench: 78% Base clock 3.6 GHz, turbo 2 GHz (avg)
Poor: 78% Great: 106%
SPEED RANK: 17th / 1182
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed
101 % Slightly faster effective speed.
+11%
90.7 %
1-Core
Avg. Single Core Mixed Speed
145 Pts Slightly faster single-core speed.
+9%
133 Pts
2-Core
Avg. Dual Core Mixed Speed
287 Pts Slightly faster dual-core speed.
+9%
264 Pts
4-Core
Avg. Quad Core Mixed Speed
565 Pts Slightly faster quad-core speed.
+9%
517 Pts
8-Core
Avg. Octa Core Mixed Speed
1059 Pts Much faster octa-core speed.
+44%
735 Pts
64-Core
Avg. Multi Core Mixed Speed
1498 Pts Hugely faster 64-core speed.
+102%
741 Pts
1-Core
OC Single Core Mixed Speed
155 Pts 155 Pts
2-Core
OC Dual Core Mixed Speed
310 Pts +1% 308 Pts
4-Core
OC Quad Core Mixed Speed
619 Pts +2% 604 Pts
8-Core
OC Octa Core Mixed Speed
1204 Pts Much faster OC octa-core speed.
+37%
878 Pts
64-Core
OC Multi Core Mixed Speed
1644 Pts Hugely faster OC 64-core speed.
+87%
879 Pts
Market Share
Based on 19,433,980 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.37 % Hugely higher market share.
+93%
0.71 %
Value
Value For Money
86.5 % 95.5 % Slightly better value.
+10%
User Rating
UBM User Rating
120 % Much more popular.
+56%
77 %
Price
Price (score)
$479 $230 Much cheaper.
+52%
Age
Newest
10 Months Much more recent.
+55%
22 Months
TDP
Thermal Design Power (TDP)
95 Watts 95 Watts
Cores
CPU Processing Cores
8 cores Much higher core count.
+33%
6 cores
Threads
CPU Processing Threads
16 threads Hugely higher thread count.
+167%
6 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.6 GHz 3.6 GHz
Turbo Clock
Turbo Clock Speed
5 GHz Faster turbo frequency.
+16%
4.3 GHz
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
16 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
$488.00 - $499.00 N/A
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (130W)
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.15 GHz
Hyper-Threading Tech
Intel® Hyper-Threading 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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The Intel i9-9900K is an 8 core, 16 thread, unlocked 9th generation Coffee Lake processor. It has a base / boost clocks of 3.6 / 4.7 GHz and a single-core boost of 5.0 GHz (the highest frequency achieved yet from this class of Intel CPU). It features 16 MB of cache, a 95W TDP and Intel UHD 630 graphics. The 9900K is compatible with the new Z390 chipset, and subject to a BIOS update, is also compatible with the older Z370 chipset. Aimed at users who do not wish to compromise, the i9-9900K offers the best gaming and desktop experience available at any price. Heavy workstation users should consider the Ryzen 9 3900X which is similarly priced. Comparing the overclocked 3900X shows that it is just 10% worse for gaming and desktop (sub octa-core) but around 40% better for 64-core computations. Gamers should consider the 9700K which offers identical overclocked gaming performance at a $100 USD discount. [Oct '18 CPUPro]

MORE DETAILS

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

Processor Rankings (Price vs Performance) August 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 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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