IntelBX80677I77700K
IntelBX80646G3258

4 Cores, 8 Threads
@4.2GHz Kaby Lake (2017)

2 Cores, 2 Threads
@3.2GHz Haswell (2013)

Real World Speed
Performance profile from 39,600 user samples
31,293 User Benchmarks
Best Bench: 113% Base clock 4.2 GHz, turbo 5.15 GHz (avg)
Worst Bench: 88% Base clock 4.2 GHz, turbo 2.2 GHz (avg)
Poor: 88% Great: 113%
SPEED RANK: 2nd / 959
Gaming
Gaming 100%
UFO
Desktop
Desktop 101%
UFO
Workstation
Workstation 74%
Battleship
8,307 User Benchmarks
Best Bench: 62% Base clock 3.2 GHz
Worst Bench: 34% Base clock 3.2 GHz, turbo 0.85 GHz (avg)
Poor: 34% Great: 62%
SPEED RANK: 273rd / 959
Gaming
Gaming 48%
Yacht
Desktop
Desktop 62%
Destroyer
Workstation
Workstation 28%
Raft
Effective Speed
Effective CPU Speed
100 % Hugely faster effective speed.
+107%
48.2 % -107%
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Much faster single-core speed.
+39%
101 Pts -39%
QC Mixed
Avg. Quad Core Mixed Speed
491 Pts Hugely faster quad-core speed.
+152%
195 Pts -152%
MC Mixed
Avg. Multi Core Mixed Speed
747 Pts Hugely faster multi-core speed.
+275%
199 Pts -275%
SC Mixed
OC Single Core Mixed Speed
155 Pts Faster OC single-core speed.
+21%
128 Pts -21%
QC Mixed
OC Quad Core Mixed Speed
565 Pts Hugely faster OC quad-core speed.
+121%
256 Pts -121%
MC Mixed
OC Multi Core Mixed Speed
835 Pts Hugely faster OC multi-core speed.
+226%
256 Pts -226%
Market Share
Based on 3,778,742 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.75 % Insanely higher market share.
+2,400%
0.15 % -2,400%
Value
Value For Money
97.9 % Better value.
+20%
81.3 % -20%
User Rating
UBM User Rating
131 % Hugely more popular.
+87%
70 % -87%
Price
Price (score)
$309 -77% $72 Much cheaper.
+77%
Age
Newest
4 Months Hugely more recent.
+89%
36 Months -89%
TDP
Thermal Design Power (TDP)
91 Watts -42% 53 Watts Much more energy efficient.
+42%
Cores
CPU Processing Cores
4 cores Hugely higher core count.
+100%
2 cores -100%
Threads
CPU Processing Threads
8 threads Hugely higher thread count.
+300%
2 threads -300%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm -36%
Base Clock
Base Clock Speed
4.2 GHz Much faster base frequency.
+31%
3.2 GHz -31%
Turbo Clock
Turbo Clock Speed
4.5 GHz Much faster turbo frequency.
+41%
3.2 GHz -41%
SC Int
Single Core Integer Speed
151 Pts Faster single-core int speed.
+15%
131 Pts -15%
SC Float
Single Core Floating Point Speed
159 Pts Faster single-core fp speed.
+22%
130 Pts -22%
QC Int
Quad Core Integer Speed
552 Pts Hugely faster quad-core int speed.
+113%
259 Pts -113%
QC Float
Quad Core Floating Point Speed
586 Pts Hugely faster quad-core fp speed.
+126%
259 Pts -126%
MC Int
Multi Core Integer Speed
773 Pts Hugely faster multi-core int speed.
+197%
260 Pts -197%
MC Float
Multi Core Floating Point Speed
883 Pts Hugely faster multi-core fp speed.
+241%
259 Pts -241%
Series
CPU Architecture
Kaby Lake (2017) Haswell (2013)
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
HD 630 HD
Launch Date
Launch Date
Q1'17 Q2'14
Cache
Cache
8 MB 3 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $72.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2013C
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR3-1333, DDR3L-1333 @ 1.5V
ECC Memory Supported
ECC Memory Supported ‡
No Yes
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® HD Graphics
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.1 GHz
Clear Video HD Tech
Intel® Clear Video HD Technology
Yes No
Graphics Video Max Memory
Graphics Video Max Memory
64 GB 1.7 GB
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
TSX-NI
Intel® TSX-NI
Yes No
AES New Instructions
Intel® AES New Instructions
Yes No
PCI Express Revision
PCI Express Revision
3.0 Up to 3.0

More specs » More specs »
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The Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '17 CPUPro]

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The Intel G3258 is the first budget Pentium processor to feature an unlocked multiplier. This enables a comfortable overclock to 4.3 GHz using just the stock heat sink and fan. At 4.3 GHz, in terms of single and dual core performance, the G3258 challenges a fully overclocked i7-4790K, the fastest CPU I have seen to date! These results are stunning considering that the G3258 is retailing for around one fifth as much as an i7-4790K. The G3258's Achilles heel is its poor multi-core performance which is over 50% weaker than the group leaders. For the vast majority of users, assuming an overclock of 4.3 GHz, the G3258 is the best value processor on the market by miles. On the other hand, users that encode multi-media or run SLI/Crossfire setups should look elsewhere. [Jul '14 CPUPro]

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Processor Rankings (Price vs Performance) May 2017 CPU Rankings.

Welcome to our desktop CPU comparison. We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by price to yield a value for money rating which is geared towards gamers. Calculated values don't always paint the whole picture so we check them against hundreds of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top CPUs. [CPUPro]

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 i7-7700K $309Nvidia GTX 1070 $368Samsung 850 Evo 250GB $104
Intel Core i5-7600K $240AMD RX 480 $210Samsung 850 Pro 256GB $127
AMD Ryzen 7 1700 $300Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $155
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46Corsair Vengeance LPX DDR4 3200 C16 2x8GB $136SanDisk Ultra Fit 32GB $13
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