IntelBX80684I78700K
IntelBX80623I52400

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

4 Cores, 4 Threads @3.1GHz, Sandy Bridge.
Release date: Q1 2011.

Real World Speed
Performance profile from 186,491 user samples
143,298 User Benchmarks
Best Bench: 124% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 92% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 92% Great: 124%
SPEED RANK: 9th / 1128
Gaming
Gaming 108%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 96%
Nuclear submarine
43,193 User Benchmarks
Best Bench: 65% Base clock 3.1 GHz, turbo 3.6 GHz (avg)
Worst Bench: 49% Base clock 3.4 GHz, turbo 0.25 GHz (avg)
Poor: 49% Great: 65%
SPEED RANK: 230th / 1128
Gaming
Gaming 60%
Gunboat
Desktop
Desktop 59%
Gunboat
Workstation
Workstation 36%
Jet ski
Effective Speed
Effective CPU Speed
108 % Hugely faster effective speed.
+81%
60 %
SC Mixed
Avg. Single Core Mixed Speed
137 Pts Much faster single-core speed.
+64%
83.4 Pts
QC Mixed
Avg. Quad Core Mixed Speed
527 Pts Much faster quad-core speed.
+70%
310 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1083 Pts Hugely faster multi-core speed.
+243%
316 Pts
SC Mixed
OC Single Core Mixed Speed
155 Pts Much faster OC single-core speed.
+74%
89.1 Pts
QC Mixed
OC Quad Core Mixed Speed
609 Pts Hugely faster OC quad-core speed.
+81%
337 Pts
MC Mixed
OC Multi Core Mixed Speed
1242 Pts Hugely faster OC multi-core speed.
+265%
340 Pts
Market Share
Based on 10,975,868 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.91 % Hugely higher market share.
+492%
0.66 %
Value
Value For Money
99.1 % Slightly better value.
+15%
86.4 %
User Rating
UBM User Rating
148 % Hugely more popular.
+131%
64 %
Price
Price (score)
$370 $110 Much cheaper.
+70%
Age
Newest
11 Months Hugely more recent.
+88%
92 Months
TDP
Thermal Design Power (TDP)
95 Watts 95 Watts
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores
Threads
CPU Processing Threads
12 threads Hugely higher thread count.
+200%
4 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm
Base Clock
Base Clock Speed
3.7 GHz Faster base frequency.
+19%
3.1 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Much faster turbo frequency.
+38%
3.4 GHz
SC Int
Single Core Integer Speed
150 Pts Much faster single-core int speed.
+69%
88.7 Pts
SC Float
Single Core Floating Point Speed
159 Pts Much faster single-core fp speed.
+78%
89.3 Pts
QC Int
Quad Core Integer Speed
593 Pts Much faster quad-core int speed.
+75%
339 Pts
QC Float
Quad Core Floating Point Speed
632 Pts Hugely faster quad-core fp speed.
+86%
339 Pts
MC Int
Multi Core Integer Speed
1143 Pts Hugely faster multi-core int speed.
+237%
339 Pts
MC Float
Multi Core Floating Point Speed
1318 Pts Hugely faster multi-core fp speed.
+289%
339 Pts
Series
CPU Architecture
Coffee Lake Sandy Bridge
Socket
Motherboard Socket
FCLGA1151 LGA1155
Graphics
Integrated Graphics
UHD 630 HD 2000
Launch Date
Launch Date
Q4'17 Q1'11
Cache
Cache
12 MB 6 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX
Embedded Options Available
Embedded Options Available
No Yes
Lithography
Lithography
14 nm 32 nm
Recommended Price
Recommended Customer Price
N/A $178.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2666 DDR3 1066/1333
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 2000
Graphics Base Frequency
Graphics Base Frequency
350 MHz 850 MHz
# of Displays Supported
# of Displays Supported ‡
3 2
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.1 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
PCI Express Revision
PCI Express Revision
3.0 2.0

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

Pros: Brilliant value for money. Cons: It's not the 2400k which can be had for just a tiny bit more and offers a lot more flexibility in terms of overclocking. [Apr '12 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) September 2018 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 $370Nvidia GTX 1070 $344Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $110
Intel Core i5-8600K $245AMD RX 480 $280Samsung 850 Pro 256GB $134
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $150SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $899SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3200 C16 2x8GB $160SanDisk Ultra Fit 32GB $11
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