IntelBX80684I78700K
IntelBX80633I74820K

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

4 Cores, 8 Threads @3.7GHz, Ivy Bridge-E.
Release date: Q3 2013.

Real World Speed
Performance profile from 769,456 user samples
746,287 User Benchmarks
Best Bench: 100% Base clock 3.7 GHz, turbo 5.05 GHz (avg)
Worst Bench: 76% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 76% Great: 100%
SPEED RANK: 148th / 1442
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 90%
Nuclear submarine
Workstation
Workstation 80%
Battleship
23,169 User Benchmarks
Best Bench: 81% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Worst Bench: 61% Base clock 3.7 GHz, turbo 3.75 GHz (avg)
Poor: 61% Great: 81%
SPEED RANK: 361st / 1442
Gaming
Gaming 72%
Battleship
Desktop
Desktop 75%
Battleship
Workstation
Workstation 58%
Gunboat
Effective Speed
Effective CPU Speed
88.4 % Faster effective speed.
+23%
71.8 %
Memory
Avg. Memory Latency
90.1 Pts Slightly lower memory latency.
+6%
84.7 Pts
1-Core
Avg. Single Core Speed
128 Pts Much faster single-core speed.
+36%
94 Pts
2-Core
Avg. Dual Core Speed
249 Pts Much faster dual-core speed.
+37%
182 Pts
4-Core
Avg. Quad Core Speed
466 Pts Much faster quad-core speed.
+46%
320 Pts
8-Core
Avg. Octa Core Speed
770 Pts Much faster octa-core speed.
+61%
477 Pts
Memory
OC Memory Latency
96.5 Pts +3% 94 Pts
1-Core
OC Single Core Speed
148 Pts Faster OC single-core speed.
+28%
116 Pts
2-Core
OC Dual Core Speed
292 Pts Much faster OC dual-core speed.
+35%
217 Pts
4-Core
OC Quad Core Speed
558 Pts Much faster OC quad-core speed.
+42%
392 Pts
8-Core
OC Octa Core Speed
892 Pts Much faster OC octa-core speed.
+54%
581 Pts
Market Share
Based on 67,744,253 CPUs tested
Market Share
Market Share (trailing 30 days)
1.37 % Insanely higher market share.
+2,183%
0.06 %
Value
Value For Money
98.7 % Slightly better value.
+6%
92.7 %
User Rating
UBM User Rating
81 % Much more popular.
+47%
55 %
Price
Price (score)
$186 $110 Much cheaper.
+41%
Age
Newest
78 Months Much more recent.
+39%
127 Months
TDP
Thermal Design Power (TDP)
95 Watts More energy efficient.
+27%
130 Watts
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores
Threads
CPU Processing Threads
12 threads Much higher thread count.
+50%
8 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
3.7 GHz 3.7 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Faster turbo frequency.
+21%
3.9 GHz
64-Core
OC Multi Core Speed
1147 Pts Hugely faster OC 64-core speed.
+97%
583 Pts
64-Core
Avg. Multi Core Speed
971 Pts Hugely faster 64-core speed.
+99%
487 Pts
Series
CPU Architecture
Coffee Lake Ivy Bridge-E
Socket
Motherboard Socket
FCLGA1151 FCLGA2011
Graphics
Integrated Graphics
UHD 630 None
Launch Date
Launch Date
Q4'17 Q3'13
Cache
Cache
12 MB 10 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.2, AVX, AES
Lithography
Lithography
14 nm 22 nm
Max Turbo Frequency
Max Turbo Frequency
4.70 GHz 3.9 GHz
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Memory Types
Memory Types
DDR4-2666 DDR3 1333/1600/1866
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
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

This is yet another processor from Intel that demonstrates their total market domination in the high end PC sector. The 4820K isn't really a step forward in any particular direction but rather a variant on what's already been available (performance wise) for a few years. As long as Intel is largely competing with itself they will likely continue with these sorts of incremental releases. The 4820K requires an Intel X79 chipset, which dates back to Sandy Bridge-E and lacks some of the newer features like native USB 3.0 support. An investment in the 4820K only makes sense if you already own an LGA2011 Motherboard and could be seen as good money chasing bad given that the platform is due an upgrade. That said the 4820K is a very capable multi-core processor and it sits amongst the top handful of processors in this regard. For typical consumers a Haswell i3 will offer mostly identical response times, a lower energy footprint and a significantly more competitive price. [Nov '13 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) April 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. 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 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 value for money upgrades.

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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
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
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 Frequently Asked Questions

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Intel Core i5-12600K $178Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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