IntelBX80633I74820K
IntelBX80677I77700K

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

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

Real World Speed
Performance profile from 735,481 user samples
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
712,312 User Benchmarks
Best Bench: 92% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 71% Base clock 4.2 GHz, turbo 0.2 GHz (avg)
Poor: 71% Great: 92%
SPEED RANK: 188th / 1442
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 70%
Battleship
Effective Speed
Effective CPU Speed
71.8 % 84.2 % Faster effective speed.
+17%
Memory
Avg. Memory Latency
84.7 Pts 89.6 Pts Slightly lower memory latency.
+6%
1-Core
Avg. Single Core Speed
94 Pts 127 Pts Much faster single-core speed.
+35%
2-Core
Avg. Dual Core Speed
182 Pts 242 Pts Much faster dual-core speed.
+33%
4-Core
Avg. Quad Core Speed
320 Pts 426 Pts Much faster quad-core speed.
+33%
8-Core
Avg. Octa Core Speed
477 Pts 647 Pts Much faster octa-core speed.
+36%
Memory
OC Memory Latency
94 Pts 96.5 Pts +3%
1-Core
OC Single Core Speed
116 Pts 142 Pts Faster OC single-core speed.
+22%
2-Core
OC Dual Core Speed
217 Pts 275 Pts Faster OC dual-core speed.
+27%
4-Core
OC Quad Core Speed
392 Pts 482 Pts Faster OC quad-core speed.
+23%
8-Core
OC Octa Core Speed
581 Pts 737 Pts Faster OC octa-core speed.
+27%
Market Share
Based on 67,717,182 CPUs tested
Market Share
Market Share (trailing 30 days)
0.03 % 1 % Insanely higher market share.
+3,233%
Value
Value For Money
92.7 % Slightly better value.
+6%
87.5 %
User Rating
UBM User Rating
55 % 83 % Much more popular.
+51%
Price
Price (score)
$110 Much cheaper.
+55%
$242
Age
Newest
127 Months 87 Months Much more recent.
+31%
TDP
Thermal Design Power (TDP)
130 Watts 91 Watts Much more energy efficient.
+30%
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
3.7 GHz 4.2 GHz Faster base frequency.
+14%
Turbo Clock
Turbo Clock Speed
3.9 GHz 4.5 GHz Faster turbo frequency.
+15%
64-Core
OC Multi Core Speed
583 Pts 747 Pts Faster OC 64-core speed.
+28%
64-Core
Avg. Multi Core Speed
487 Pts 662 Pts Much faster 64-core speed.
+36%
Series
CPU Architecture
Ivy Bridge-E Kaby Lake
Socket
Motherboard Socket
FCLGA2011 FCLGA1151
Graphics
Integrated Graphics
None HD 630
Launch Date
Launch Date
Q3'13 Q1'17
Cache
Cache
10 MB SmartCache 8 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.2, AVX, AES SSE4.1/4.2, AVX 2.0
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
N/A $339.00 - $350.00
Max Turbo Frequency
Max Turbo Frequency
3.9 GHz 4.50 GHz
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Memory Types
Memory Types
DDR3 1333/1600/1866 DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Memory Channels
Max # of Memory Channels
4 2
Package Size
Package Size
52.5mm x 45.0mm 37.5mm x 37.5mm
Max # of PCI Express Lanes
Max # of PCI Express Lanes
40 16

More specs » More specs »
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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

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]

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
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  • - 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
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HDDRAMUSB
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WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
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