IntelBX80684I78700K
IntelBX80619I73930K

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

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

Real World Speed
Performance profile from 302,372 user samples
284,422 User Benchmarks
Best Bench: 123% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 90% Base clock 3.7 GHz, turbo 4.3 GHz (avg)
Poor: 90% Great: 123%
SPEED RANK: 23rd / 1158
Gaming
Gaming 107%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 94%
Nuclear submarine
17,950 User Benchmarks
Best Bench: 93% Base clock 3.2 GHz, turbo 3.8 GHz (avg)
Worst Bench: 63% Base clock 3.2 GHz, turbo 1.65 GHz (avg)
Poor: 63% Great: 93%
SPEED RANK: 101st / 1158
Gaming
Gaming 76%
Battleship
Desktop
Desktop 74%
Battleship
Workstation
Workstation 65%
Battle cruiser
Effective Speed
Effective CPU Speed
107 % Much faster effective speed.
+41%
76.3 %
SC Mixed
Avg. Single Core Mixed Speed
137 Pts Much faster single-core speed.
+41%
97.2 Pts
QC Mixed
Avg. Quad Core Mixed Speed
522 Pts Much faster quad-core speed.
+40%
374 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1060 Pts Much faster multi-core speed.
+45%
731 Pts
SC Mixed
OC Single Core Mixed Speed
155 Pts Much faster OC single-core speed.
+34%
116 Pts
QC Mixed
OC Quad Core Mixed Speed
613 Pts Much faster OC quad-core speed.
+32%
464 Pts
MC Mixed
OC Multi Core Mixed Speed
1223 Pts Much faster OC multi-core speed.
+38%
887 Pts
Market Share
Based on 17,144,058 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.48 % Insanely higher market share.
+1,671%
0.14 %
Value
Value For Money
99.8 % Much better value.
+59%
62.6 %
User Rating
UBM User Rating
167 % Hugely more popular.
+165%
63 %
Price
Price (score)
$355 Cheaper.
+28%
$495
Age
Newest
19 Months Much more recent.
+79%
90 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
SC Int
Single Core Integer Speed
150 Pts Much faster single-core int speed.
+30%
115 Pts
SC Float
Single Core Floating Point Speed
159 Pts Much faster single-core fp speed.
+37%
116 Pts
QC Int
Quad Core Integer Speed
595 Pts Faster quad-core int speed.
+29%
461 Pts
QC Float
Quad Core Floating Point Speed
633 Pts Much faster quad-core fp speed.
+37%
463 Pts
MC Int
Multi Core Integer Speed
1110 Pts Faster multi-core int speed.
+30%
854 Pts
MC Float
Multi Core Floating Point Speed
1313 Pts Much faster multi-core fp speed.
+49%
882 Pts
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) May 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 $355Nvidia GTX 1070 $380Samsung 850 Evo 250GB $92
AMD Ryzen 5 2600 $139Nvidia GTX 1060-6GB $208Samsung 850 Evo 500GB $99
AMD Ryzen 5 1600 $108Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $90SanDisk Extreme 64GB $128
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $601SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3200 C16 2x8GB $95SanDisk Ultra Fit 32GB $12
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