IntelBX80623I72600K
IntelBX80684I78700K

4 Cores, 8 Threads
@3.4GHz Sandy Bridge (2011)

6 Cores, 12 Threads
@3.7GHz Coffee Lake (2017)

Real World Speed
Performance profile from 129,084 user samples
44,228 User Benchmarks
Best Bench: 88% Base clock 3.4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 44% Base clock 3.7 GHz, turbo 0.2 GHz (avg)
Poor: 44% Great: 88%
SPEED RANK: 149th / 1110
Gaming
Gaming 68%
Battle cruiser
Desktop
Desktop 70%
Battle cruiser
Workstation
Workstation 49%
Yacht
84,856 User Benchmarks
Best Bench: 127% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 94% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 94% Great: 127%
SPEED RANK: 7th / 1110
Gaming
Gaming 110%
UFO
Desktop
Desktop 107%
UFO
Workstation
Workstation 97%
Nuclear submarine
Effective Speed
Effective CPU Speed
68.3 % 110 % Much faster effective speed.
+62%
SC Mixed
Avg. Single Core Mixed Speed
98.7 Pts 140 Pts Much faster single-core speed.
+42%
QC Mixed
Avg. Quad Core Mixed Speed
332 Pts 538 Pts Much faster quad-core speed.
+62%
MC Mixed
Avg. Multi Core Mixed Speed
489 Pts 1093 Pts Hugely faster multi-core speed.
+124%
SC Mixed
OC Single Core Mixed Speed
121 Pts 158 Pts Much faster OC single-core speed.
+31%
QC Mixed
OC Quad Core Mixed Speed
442 Pts 626 Pts Much faster OC quad-core speed.
+42%
MC Mixed
OC Multi Core Mixed Speed
618 Pts 1265 Pts Hugely faster OC multi-core speed.
+105%
Market Share
Based on 9,377,165 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.57 % 3.95 % Hugely higher market share.
+593%
Value
Value For Money
62.2 % 107 % Much better value.
+71%
User Rating
UBM User Rating
61 % 142 % Hugely more popular.
+133%
Price
Price (score)
$375 $320 Slightly cheaper.
+15%
Age
Newest
89 Months 8 Months Hugely more recent.
+91%
TDP
Thermal Design Power (TDP)
95 Watts 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
32 nm 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
3.4 GHz 3.7 GHz Slightly faster base frequency.
+9%
Turbo Clock
Turbo Clock Speed
3.8 GHz 4.7 GHz Faster turbo frequency.
+24%
SC Int
Single Core Integer Speed
121 Pts 155 Pts Faster single-core int speed.
+28%
SC Float
Single Core Floating Point Speed
121 Pts 162 Pts Much faster single-core fp speed.
+34%
QC Int
Quad Core Integer Speed
445 Pts 614 Pts Much faster quad-core int speed.
+38%
QC Float
Quad Core Floating Point Speed
449 Pts 638 Pts Much faster quad-core fp speed.
+42%
MC Int
Multi Core Integer Speed
598 Pts 1168 Pts Hugely faster multi-core int speed.
+95%
MC Float
Multi Core Floating Point Speed
616 Pts 1336 Pts Hugely faster multi-core fp speed.
+117%
Series
CPU Architecture
Sandy Bridge (2011) Coffee Lake (2017)
Socket
Motherboard Socket
LGA1155 FCLGA1151
Graphics
Integrated Graphics
HD 3000 UHD 630
Launch Date
Launch Date
Q1'11 Q4'17
Cache
Cache
8 MB SmartCache 12 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX2
Lithography
Lithography
32 nm 14 nm
Bus Speed
Bus Speed
5 GT/s DMI 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 1066/1333 DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 3000 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
850 MHz 350 MHz
# of Displays Supported
# of Displays Supported ‡
2 3
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.35 GHz 1.20 GHz
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
No Yes
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Revision
PCI Express Revision
2.0 3.0

More specs » More specs »
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The i7-2600K Sandy Bridge processor is two generations old and nearly three years out of date. The numerous owners of this superb processor should feel in no hurry to upgrade as it's still one of the fastest consumer processors, even by today's standards. The benchmark figures indicate that in terms of real-world performance this processor is only 5% slower than the third generation Ivy Bridge i7-3770K, not bad considering its age. That said new buyers will find both better energy efficiency and marginal performance improvements elsewhere[Feb '12 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 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
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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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  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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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  • - Find the best upgrades.
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CPUGPUSSD
Intel Core i7-8700K $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $104
AMD Ryzen 5 1600 $175Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $125
Intel Core i5-8600K $222AMD RX 480 $280Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $951SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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