IntelBX80684I99900K
IntelBX80684I58600K

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

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

Real World Speed
Performance profile from 135,203 user samples
40,826 User Benchmarks
Best Bench: 131% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 102% Base clock 3.6 GHz, turbo 1.2 GHz (avg)
Poor: 102% Great: 131%
SPEED RANK: 5th / 1147
Gaming
Gaming 121%
UFO
Desktop
Desktop 117%
UFO
Workstation
Workstation 124%
UFO
94,377 User Benchmarks
Best Bench: 120% Base clock 3.6 GHz, turbo 5.25 GHz (avg)
Worst Bench: 91% Base clock 3.6 GHz, turbo 4.05 GHz (avg)
Poor: 91% Great: 120%
SPEED RANK: 25th / 1147
Gaming
Gaming 103%
UFO
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 75%
Battleship
Effective Speed
Effective CPU Speed
121 % Faster effective speed.
+17%
103 %
SC Mixed
Avg. Single Core Mixed Speed
146 Pts Slightly faster single-core speed.
+8%
135 Pts
QC Mixed
Avg. Quad Core Mixed Speed
567 Pts Slightly faster quad-core speed.
+8%
523 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1506 Pts Hugely faster multi-core speed.
+100%
754 Pts
SC Mixed
OC Single Core Mixed Speed
156 Pts 156 Pts
QC Mixed
OC Quad Core Mixed Speed
617 Pts +1% 612 Pts
MC Mixed
OC Multi Core Mixed Speed
1656 Pts Hugely faster OC multi-core speed.
+86%
891 Pts
Market Share
Based on 16,364,503 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.85 % Hugely higher market share.
+101%
0.92 %
Value
Value For Money
100 % 107 % Slightly better value.
+7%
User Rating
UBM User Rating
75 % 135 % Much more popular.
+80%
Price
Price (score)
$474 $260 Much cheaper.
+45%
Age
Newest
6 Months Much more recent.
+67%
18 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
SC Int
Single Core Integer Speed
152 Pts +1% 150 Pts
SC Float
Single Core Floating Point Speed
161 Pts 162 Pts +1%
QC Int
Quad Core Integer Speed
601 Pts +2% 588 Pts
QC Float
Quad Core Floating Point Speed
638 Pts 649 Pts +2%
MC Int
Multi Core Integer Speed
1495 Pts Much faster multi-core int speed.
+77%
845 Pts
MC Float
Multi Core Floating Point Speed
1770 Pts Hugely faster multi-core fp speed.
+84%
961 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
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 »
ADVERTISEMENT

Intel’s new consumer flagship CPU for 2018 is the i9-9900K, an 8 core, 16 thread, unlocked 9th generation Intel core desktop processor. It is based on the third round of optimization of Intel’s 14nm Coffee Lake architecture, which in this iteration, yields more cores. This is a retort to AMD’s 8 core 16 thread Ryzen 7 processors that launched in Q2 2018, to fill the gap before Intel releases it’s 10nm Cannon Lake based CPUs in, perhaps, late 2019. In direct proportion to the increased number of cores, average multi-core benchmarks are around 33% higher on the 8 core 9900K than the previous generation 6 core 8700K. The i9-9900K has a base frequency of 3.6 GHz, ramping up to an all-core turbo boost frequency of 4.7 GHz and a single-core turbo boost speed 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 graphics 630. The 9900K is compatible with the new Z390 chipset from Intel, and subject to a BIOS update, is also compatible with the Z370 chipset. This premium CPU is expected to retail at $500, which compares to around $300 for the 8 core, 16 thread Ryzen 7 2700X. Although the 9900K has around a 16% effective speed advantage over the 2700X, the Ryzen 2700X offers better value for money for most users. [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) 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]

ADVERTISEMENT

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.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $339Nvidia GTX 1070 $379Samsung 850 Evo 250GB $100
AMD Ryzen 5 2600 $159Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $107
AMD Ryzen 5 1600 $115Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $93
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $95SanDisk Extreme 64GB $128
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
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback