IntelBX80646I74790K
IntelBX80684I78700K

4 Cores, 8 Threads @4.0GHz, Haswell.
Release date: Q2 2014.

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

Real World Speed
Performance profile from 534,431 user samples
223,172 User Benchmarks
Best Bench: 101% Base clock 4 GHz, turbo 5 GHz (avg)
Worst Bench: 70% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 70% Great: 101%
SPEED RANK: 63rd / 1159
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 63%
Destroyer
311,259 User Benchmarks
Best Bench: 123% Base clock 3.7 GHz
Worst Bench: 91% Base clock 3.7 GHz, turbo 1.4 GHz (avg)
Poor: 91% Great: 123%
SPEED RANK: 22nd / 1159
Gaming
Gaming 107%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 94%
Nuclear submarine
Effective Speed
Effective CPU Speed
86.5 % 107 % Faster effective speed.
+24%
SC Mixed
Avg. Single Core Mixed Speed
123 Pts 137 Pts Slightly faster single-core speed.
+11%
QC Mixed
Avg. Quad Core Mixed Speed
423 Pts 520 Pts Faster quad-core speed.
+23%
MC Mixed
Avg. Multi Core Mixed Speed
627 Pts 1060 Pts Much faster multi-core speed.
+69%
SC Mixed
OC Single Core Mixed Speed
137 Pts 155 Pts Slightly faster OC single-core speed.
+13%
QC Mixed
OC Quad Core Mixed Speed
514 Pts 607 Pts Faster OC quad-core speed.
+18%
MC Mixed
OC Multi Core Mixed Speed
718 Pts 1221 Pts Much faster OC multi-core speed.
+70%
Market Share
Based on 17,689,154 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.39 % 2.31 % Much higher market share.
+66%
Value
Value For Money
79.5 % 98.6 % Better value.
+24%
User Rating
UBM User Rating
100 % 169 % Much more popular.
+69%
Price
Price (score)
$365 +0% $365
Age
Newest
60 Months 20 Months Much more recent.
+67%
TDP
Thermal Design Power (TDP)
88 Watts Slightly more energy efficient.
+7%
95 Watts
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads 12 threads Much higher thread count.
+50%
Lithography
Manufacturing process
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
4 GHz Slightly faster base frequency.
+8%
3.7 GHz
Turbo Clock
Turbo Clock Speed
4.4 GHz 4.7 GHz Slightly faster turbo frequency.
+7%
SC Int
Single Core Integer Speed
137 Pts 150 Pts Slightly faster single-core int speed.
+9%
SC Float
Single Core Floating Point Speed
139 Pts 159 Pts Slightly faster single-core fp speed.
+14%
QC Int
Quad Core Integer Speed
517 Pts 594 Pts Slightly faster quad-core int speed.
+15%
QC Float
Quad Core Floating Point Speed
517 Pts 632 Pts Faster quad-core fp speed.
+22%
MC Int
Multi Core Integer Speed
681 Pts 1107 Pts Much faster multi-core int speed.
+63%
MC Float
Multi Core Floating Point Speed
725 Pts 1306 Pts Hugely faster multi-core fp speed.
+80%
Series
CPU Architecture
Haswell Coffee Lake
Socket
Motherboard Socket
FCLGA1150 FCLGA1151
Graphics
Integrated Graphics
HD 4600 UHD 630
Launch Date
Launch Date
Q2'14 Q4'17
Cache
Cache
8 MB SmartCache 12 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 N/A
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification
PCG 2013D PCG 2015C (130W)
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4600 Intel® UHD Graphics 630
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.25 GHz 1.20 GHz
Graphics Video Max Memory
Graphics Video Max Memory
2 GB 64 GB
TSX-NI
Intel® TSX-NI
No Yes
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
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 Core i7-4790K, codenamed Devil's Canyon, is an upgraded 4770K, Intel's current flagship i7. The 4790K features an improved thermal interface which enables it to dissipate heat more efficiently than the 4770K. Comparing the 4770K and 4790K shows that stock performance has improved by 13% which is consistent with the base clock jump from 3.5 GHz to 4.0 GHz. OC performance remains unchanged. Comparing the 4790K and 4790 shows that at stock clocks the 4790K is around 16% faster which considering the small price difference makes the 4790K a far better choice. Previously Intel targeted the unlocked K versions at overclockers but with Devil's Canyon they have included VT-d on the K chip and this time it's squarely aimed at both power users and overclockers alike. Until the release of Broadwell in six months, the 4790K is the high end CPU of choice. [Jul '14 CPUPro]

MORE DETAILS

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

Processor Rankings (Price vs Performance) June 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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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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  • - CPU tests include: integer, floating and string.
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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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CPUGPUSSD
Intel Core i7-8700K $365Nvidia GTX 1070 $390Samsung 850 Evo 250GB $86
AMD Ryzen 5 2600 $144Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $100
AMD Ryzen 7 2700X $280Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 64GB $128
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $639SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Ultra Fit 32GB $12
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