IntelBX80637I73770K
IntelBX80662I76700K

4 Cores, 8 Threads
@3.5GHz Ivy Bridge (2012)

4 Cores, 8 Threads
@4.0GHz Skylake (2015)

Real World Speed
Performance profile from 233,657 user samples
42,407 User Benchmarks
Best Bench: 91% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 63% Base clock 3.5 GHz, turbo 0.6 GHz (avg)
Poor: 63% Great: 91%
SPEED RANK: 71st / 985
Gaming
Gaming 75%
Battleship
Desktop
Desktop 76%
Battleship
Workstation
Workstation 55%
Yacht
191,250 User Benchmarks
Best Bench: 105% Base clock 4 GHz, turbo 4.9 GHz (avg)
Worst Bench: 75% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 75% Great: 105%
SPEED RANK: 27th / 985
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 67%
Battle cruiser
Effective Speed
Effective CPU Speed
75.2 % 90.8 % Faster effective speed.
+21%
SC Mixed
Avg. Single Core Mixed Speed
107 Pts 128 Pts Faster single-core speed.
+20%
QC Mixed
Avg. Quad Core Mixed Speed
368 Pts 444 Pts Faster quad-core speed.
+21%
MC Mixed
Avg. Multi Core Mixed Speed
544 Pts 679 Pts Faster multi-core speed.
+25%
SC Mixed
OC Single Core Mixed Speed
124 Pts 144 Pts Faster OC single-core speed.
+16%
QC Mixed
OC Quad Core Mixed Speed
459 Pts 536 Pts Faster OC quad-core speed.
+17%
MC Mixed
OC Multi Core Mixed Speed
641 Pts 770 Pts Faster OC multi-core speed.
+20%
Market Share
Based on 7,407,086 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.76 % 1.8 % Hugely higher market share.
+137%
Value
Value For Money
59.3 % 86.3 % Much better value.
+46%
User Rating
UBM User Rating
75 % 94 % More popular.
+25%
Price
Price (score)
$550 $334 Much cheaper.
+39%
Age
Newest
70 Months 30 Months Much more recent.
+57%
TDP
Thermal Design Power (TDP)
77 Watts More energy efficient.
+15%
91 Watts
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
3.5 GHz 4 GHz Slightly faster base frequency.
+14%
Turbo Clock
Turbo Clock Speed
3.9 GHz 4.2 GHz Slightly faster turbo frequency.
+8%
SC Int
Single Core Integer Speed
123 Pts 141 Pts Slightly faster single-core int speed.
+15%
SC Float
Single Core Floating Point Speed
126 Pts 147 Pts Faster single-core fp speed.
+17%
QC Int
Quad Core Integer Speed
457 Pts 523 Pts Slightly faster quad-core int speed.
+14%
QC Float
Quad Core Floating Point Speed
470 Pts 550 Pts Faster quad-core fp speed.
+17%
MC Int
Multi Core Integer Speed
629 Pts 712 Pts Slightly faster multi-core int speed.
+13%
MC Float
Multi Core Floating Point Speed
634 Pts 809 Pts Faster multi-core fp speed.
+28%
Series
CPU Architecture
Ivy Bridge (2012) Skylake (2015)
Socket
Motherboard Socket
FCLGA1155 FCLGA1151
Graphics
Integrated Graphics
HD 4000 HD 530
Launch Date
Launch Date
Q2'12 Q3'15
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX 2.0
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$332.00 - $342.00 $339.00 - $350.00
Bus Speed
Bus Speed
5 GT/s DMI 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification
2011D PCG 2015D (130W)
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 1333/1600 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Memory Bandwidth
Max Memory Bandwidth
25.6 GB/s 34.1 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4000 Intel® HD Graphics 530
Graphics Base Frequency
Graphics Base Frequency
650 MHz 350 MHz
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
No Yes
TSX-NI
Intel® TSX-NI
No Yes
PCI Express Configurations
PCI Express Configurations ‡
up to 1x16, 2x8, 1x8 & 2x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
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The third gen Ivy Bridge Core i7-3770K can't really be described as a consumer orientated processor. With 8 threads and four cores its capabilities are better aligned to server use. For price insensitive consumers that want the best of the best, this is currently one of the fastest processors available. The PassMark Single Thread score of 2080 points put the 3770K right at the top of the pack in terms of raw processing power and real world performance. The GeekBench and PassMark scores of 17210 and 9653 are within 20% or so of the best we have ever seen. Despite the near record breaking processing throughputs the 3770K is only rated at 77 TDP, which is also very reasonable by historical standards. For typical consumer use there are better value propositions out there. [May '13 CPUPro]

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The Core i7-6700K is Intel's latest "Skylake" flagship processor. It replaces the hugely successful i7-4790K and takes the crown as the fastest mainstream consumer CPU available. Comparing performance and specs between the 4790K and 6700K shows that the configuration is largely unchanged (same base clocks, cores, threads) but the improved manufacturing process (14nm) brings a small reduction in TDP and a performance improvement of 8%; almost exactly the same jump as between the Ivy Bridge 3770K and Haswell 4770K. Owners of any unlocked-K Intel CPU from Sandy Bridge or onwards still have no real reason to upgrade as the performance improvements are largely academic but the i7-6700K will be the CPU of choice for the vast majority of top end PC builds in 2015. [Aug '15 CPUPro]

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Processor Rankings (Price vs Performance) February 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.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

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.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - 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.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

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CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $87
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $140
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $200SanDisk Extreme 16GB $18
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