IntelBX80619I73930K
IntelBX80684I78700K

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

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

Real World Speed
Performance profile from 333,816 user samples
19,606 User Benchmarks
Best Bench: 91% Base clock 3.2 GHz, turbo 4.6 GHz (avg)
Worst Bench: 62% Base clock 3.2 GHz, turbo 0.25 GHz (avg)
Poor: 62% Great: 91%
SPEED RANK: 110th / 1173
Gaming
Gaming 76%
Battleship
Desktop
Desktop 73%
Battleship
Workstation
Workstation 65%
Destroyer
314,210 User Benchmarks
Best Bench: 124% Base clock 3.7 GHz, turbo 5.35 GHz (avg)
Worst Bench: 90% Base clock 3.7 GHz, turbo 0.45 GHz (avg)
Poor: 90% Great: 124%
SPEED RANK: 25th / 1173
Gaming
Gaming 108%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 94%
Nuclear submarine
Effective Speed
Effective CPU Speed
75.7 % 108 % Much faster effective speed.
+42%
SC Mixed
Avg. Single Core Mixed Speed
96.4 Pts 138 Pts Much faster single-core speed.
+43%
QC Mixed
Avg. Quad Core Mixed Speed
371 Pts 523 Pts Much faster quad-core speed.
+41%
MC Mixed
Avg. Multi Core Mixed Speed
722 Pts 1063 Pts Much faster multi-core speed.
+47%
SC Mixed
OC Single Core Mixed Speed
117 Pts 155 Pts Much faster OC single-core speed.
+32%
QC Mixed
OC Quad Core Mixed Speed
453 Pts 612 Pts Much faster OC quad-core speed.
+35%
MC Mixed
OC Multi Core Mixed Speed
876 Pts 1234 Pts Much faster OC multi-core speed.
+41%
Market Share
Based on 18,621,554 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.11 % 2.27 % Insanely higher market share.
+1,964%
Value
Value For Money
62 % 101 % Much better value.
+62%
User Rating
UBM User Rating
63 % 157 % Hugely more popular.
+149%
Price
Price (score)
$495 $350 Cheaper.
+29%
Age
Newest
92 Months 21 Months Much more recent.
+77%
TDP
Thermal Design Power (TDP)
130 Watts 95 Watts More energy efficient.
+27%
Cores
CPU Processing Cores
6 cores 6 cores
Threads
CPU Processing Threads
12 threads 12 threads
Lithography
Manufacturing process
32 nm 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
3.2 GHz 3.7 GHz Faster base frequency.
+16%
Turbo Clock
Turbo Clock Speed
3.8 GHz 4.7 GHz Faster turbo frequency.
+24%
SC Int
Single Core Integer Speed
116 Pts 150 Pts Faster single-core int speed.
+29%
SC Float
Single Core Floating Point Speed
116 Pts 159 Pts Much faster single-core fp speed.
+37%
QC Int
Quad Core Integer Speed
452 Pts 599 Pts Much faster quad-core int speed.
+33%
QC Float
Quad Core Floating Point Speed
453 Pts 636 Pts Much faster quad-core fp speed.
+40%
MC Int
Multi Core Integer Speed
846 Pts 1116 Pts Much faster multi-core int speed.
+32%
MC Float
Multi Core Floating Point Speed
872 Pts 1315 Pts Much faster multi-core fp speed.
+51%
Series
CPU Architecture
Sandy Bridge-E Coffee Lake
Socket
Motherboard Socket
FCLGA2011 FCLGA1151
Graphics
Integrated Graphics
None UHD 630
Launch Date
Launch Date
Q4'11 Q4'17
Cache
Cache
12 MB SmartCache 12 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.2, AVX, AES SSE4.1/4.2, AVX2
Lithography
Lithography
32 nm 14 nm
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Memory Types
Memory Types
DDR3 1066/1333/1600 DDR4-2666
Memory Channels
Max # of Memory Channels
4 2
Package Size
Package Size
52.5mm x 45.0mm 37.5mm x 37.5mm
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
Max # of PCI Express Lanes
Max # of PCI Express Lanes
40 16

More specs » More specs »
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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

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) July 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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CPUGPUSSD
Intel Core i7-8700K $350Nvidia GTX 1070 $400Samsung 850 Evo 250GB $104
AMD Ryzen 5 2600 $127Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $103
AMD Ryzen 7 2700X $252Nvidia GTX 1080-Ti $750Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $70SanDisk Extreme 64GB $128
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $728SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Ultra Fit 32GB $12
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