IntelBX80684I78700K
IntelBX80619I73930K

6 Cores, 12 Threads @3.7GHz, Coffee Lake.
Release date: Q4 2017.

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About

6 Cores, 12 Threads @3.2GHz, Sandy Bridge-E.
Release date: Q4 2011.

Real World Speed
Performance profile from 341,235 user samples
319,061 User Benchmarks
Best Bench: 109% Base clock 3.7 GHz, turbo 5.35 GHz (avg)
Worst Bench: 77% Base clock 3.7 GHz, turbo 1.05 GHz (avg)
Poor: 77% Great: 109%
SPEED RANK: 14th / 1182
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 95%
Nuclear submarine
Workstation
Workstation 79%
Battleship
22,174 User Benchmarks
Best Bench: 80% Base clock 3.2 GHz, turbo 4.65 GHz (avg)
Worst Bench: 53% Base clock 3.2 GHz, turbo 0.5 GHz (avg)
Poor: 53% Great: 80%
SPEED RANK: 112th / 1182
Gaming
Gaming 66%
Battle cruiser
Desktop
Desktop 67%
Battle cruiser
Workstation
Workstation 55%
Yacht
Effective Speed
Effective CPU Speed
92.6 % Much faster effective speed.
+40%
65.9 %
1-Core
Avg. Single Core Mixed Speed
137 Pts Much faster single-core speed.
+41%
97.1 Pts
2-Core
Avg. Dual Core Mixed Speed
270 Pts Much faster dual-core speed.
+40%
193 Pts
4-Core
Avg. Quad Core Mixed Speed
522 Pts Much faster quad-core speed.
+40%
372 Pts
8-Core
Avg. Octa Core Mixed Speed
846 Pts Much faster octa-core speed.
+44%
588 Pts
64-Core
Avg. Multi Core Mixed Speed
1059 Pts Much faster 64-core speed.
+47%
721 Pts
1-Core
OC Single Core Mixed Speed
155 Pts Much faster OC single-core speed.
+34%
116 Pts
2-Core
OC Dual Core Mixed Speed
308 Pts Much faster OC dual-core speed.
+34%
230 Pts
4-Core
OC Quad Core Mixed Speed
614 Pts Much faster OC quad-core speed.
+36%
452 Pts
8-Core
OC Octa Core Mixed Speed
987 Pts Much faster OC octa-core speed.
+37%
720 Pts
64-Core
OC Multi Core Mixed Speed
1224 Pts Much faster OC 64-core speed.
+39%
880 Pts
Market Share
Based on 19,452,676 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.05 % Insanely higher market share.
+1,477%
0.13 %
Value
Value For Money
87.6 % Much better value.
+56%
56.3 %
User Rating
UBM User Rating
115 % Hugely more popular.
+83%
63 %
Price
Price (score)
$340 Much cheaper.
+31%
$495
Age
Newest
22 Months Much more recent.
+76%
93 Months
TDP
Thermal Design Power (TDP)
95 Watts More energy efficient.
+27%
130 Watts
Cores
CPU Processing Cores
6 cores 6 cores
Threads
CPU Processing Threads
12 threads 12 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm
Base Clock
Base Clock Speed
3.7 GHz Faster base frequency.
+16%
3.2 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Faster turbo frequency.
+24%
3.8 GHz
Series
CPU Architecture
Coffee Lake Sandy Bridge-E
Socket
Motherboard Socket
FCLGA1151 FCLGA2011
Graphics
Integrated Graphics
UHD 630 None
Launch Date
Launch Date
Q4'17 Q4'11
Cache
Cache
12 MB 12 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.2, AVX, AES
Lithography
Lithography
14 nm 32 nm
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Memory Types
Memory Types
DDR4-2666 DDR3 1066/1333/1600
Memory Channels
Max # of Memory Channels
2 4
Package Size
Package Size
37.5mm x 37.5mm 52.5mm x 45.0mm
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Revision
PCI Express Revision
3.0 2.0
Max # of PCI Express Lanes
Max # of PCI Express Lanes
16 40

More specs » More specs »
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The i7-8700K is Intel’s latest, top of the range, 8th generation Coffee Lake processor. Like Kaby Lake and Sky Lake before that, Coffee Lake is based on Intel’s 14nm architecture which has been slightly optimized on each iteration. Following AMD’s modus operandi, Intel has upped the cores and threads across the range of their CPUs. In previous generations, a 6-core processor would have been a high-end desk-top (HEDT) processor, however the i7-8700K is the first Intel CPU with 6 cores and 12 threads to be classified (and priced) as a mainstream consumer processor. Specifically, the i7-8700K features a base clock speed of 3.7 GHz which boosts to 4.7 GHz (4.5 GHz for the previous generation i7-7700k), 12MB of smart (L3) cache and 2 channels of DDR4 RAM. The majority of the performance improvements over the 7th generation stem from the higher core count which results in a 50% increase in multi-core speed between the i7-7700k and i7-8700k. A new motherboard will need to be factored into the budget when upgrading to the 8700K as it requires a new Intel Z370 chipset which has supposedly been designed to better deliver power to CPUs with a greater number of cores. Also available in this latest release of CPUs is the 6 core 6 thread i5-8600k which is a more rational option (around $100 cheaper) for the vast majority of users that don’t require hyper-threading. Sandy bridge owners can finally justify an upgrade but with the next iteration of AMD's Zen architecture just around the corner the CPU market will be a lot faster moving now that Intel, once again, has to compete. [Sep '17 CPUPro]

MORE DETAILS

The 3930K has an outstanding multi-core performance profile, almost as good as you can buy at any budget, which considering its relatively reasonable price tag really make it stand out from the crowd. The reason for the extraordinary multi-core benchmark scores is down to the 3930K's six cores. Having six cores effectively results in a 50% lead over quad core cpus and a 200% percent lead over dual core cpu's. Typical desktop users rarely use more than two cores simultaneously thus rendering the additional four cores largely redundant for consumer use. In terms of regular use this CPU will offer virtually no better real world performance than the leaders in my Desktop CPU Group Test. For server orientated workloads the 3930K offers both outstanding performance and superb value for money. [Jun '13 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.
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.

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How it works

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  • - 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.
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  • - Share your opinion by voting.

 Frequently Asked Questions

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HDDRAMUSB
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