IntelBX80646I74790K
$348
IntelBX80684I58600K
 $348 

4 Cores, 8 Threads @4.0GHz, Haswell.
Release date: Q2 2014.

VS
About

6 Cores, 6 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 346,854 user samples
229,015 User Benchmarks
Best Bench: 89% Base clock 4.9 GHz, turbo 6 GHz (avg)
Worst Bench: 58% Base clock 4 GHz, turbo 0.45 GHz (avg)
Poor: 58% Great: 89%
SPEED RANK: 68th / 1182
Gaming
Gaming 75%
Battleship
Desktop
Desktop 82%
Aircraft carrier
Workstation
Workstation 55%
Gunboat
117,839 User Benchmarks
Best Bench: 107% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Worst Bench: 74% Base clock 3.6 GHz, turbo 4.05 GHz (avg)
Poor: 74% Great: 107%
SPEED RANK: 16th / 1182
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 93%
Nuclear submarine
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed
74.5 % 90.7 % Faster effective speed.
+22%
1-Core
Avg. Single Core Mixed Speed
123 Pts 133 Pts Slightly faster single-core speed.
+8%
2-Core
Avg. Dual Core Mixed Speed
237 Pts 265 Pts Slightly faster dual-core speed.
+12%
4-Core
Avg. Quad Core Mixed Speed
420 Pts 518 Pts Faster quad-core speed.
+23%
8-Core
Avg. Octa Core Mixed Speed
619 Pts 733 Pts Faster octa-core speed.
+18%
64-Core
Avg. Multi Core Mixed Speed
626 Pts 738 Pts Faster 64-core speed.
+18%
1-Core
OC Single Core Mixed Speed
138 Pts 156 Pts Slightly faster OC single-core speed.
+13%
2-Core
OC Dual Core Mixed Speed
270 Pts 308 Pts Slightly faster OC dual-core speed.
+14%
4-Core
OC Quad Core Mixed Speed
512 Pts 609 Pts Faster OC quad-core speed.
+19%
8-Core
OC Octa Core Mixed Speed
717 Pts 880 Pts Faster OC octa-core speed.
+23%
64-Core
OC Multi Core Mixed Speed
720 Pts 882 Pts Faster OC 64-core speed.
+22%
Market Share
Based on 20,339,312 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.17 % Much higher market share.
+56%
0.75 %
Value
Value For Money
70.1 % 91.4 % Much better value.
+30%
User Rating
UBM User Rating
86 % Much more popular.
+32%
65 %
Price
Price (score)
$348 $270 Cheaper.
+22%
Age
Newest
63 Months 23 Months Much more recent.
+63%
TDP
Thermal Design Power (TDP)
88 Watts Slightly more energy efficient.
+7%
95 Watts
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads Much higher thread count.
+33%
6 threads
Lithography
Manufacturing process
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
4 GHz Slightly faster base frequency.
+11%
3.6 GHz
Turbo Clock
Turbo Clock Speed
4.4 GHz +2% 4.3 GHz
Series
CPU Architecture
Haswell Coffee Lake
Socket
Motherboard Socket
FCLGA1150 FCLGA1151
Graphics
Integrated Graphics
HD 4600 UHD 630
Launch Date
Launch Date
Q2'14 Q4'17
Cache
Cache
8 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 N/A
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification
PCG 2013D PCG 2015C (130W)
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4600 Intel® UHD Graphics 630
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.25 GHz 1.15 GHz
Graphics Video Max Memory
Graphics Video Max Memory
2 GB 64 GB
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
TSX-NI
Intel® TSX-NI
No Yes
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
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The Intel Core i7-4790K, codenamed Devil's Canyon, is an upgraded 4770K, Intel's current flagship i7. The 4790K features an improved thermal interface which enables it to dissipate heat more efficiently than the 4770K. Comparing the 4770K and 4790K shows that stock performance has improved by 13% which is consistent with the base clock jump from 3.5 GHz to 4.0 GHz. OC performance remains unchanged. Comparing the 4790K and 4790 shows that at stock clocks the 4790K is around 16% faster which considering the small price difference makes the 4790K a far better choice. Previously Intel targeted the unlocked K versions at overclockers but with Devil's Canyon they have included VT-d on the K chip and this time it's squarely aimed at both power users and overclockers alike. Until the release of Broadwell in six months, the 4790K is the high end CPU of choice. [Jul '14 CPUPro]

MORE DETAILS

The unlocked hex-core i5-8600K from Intel’s latest Coffee Lake generation of processors is the new flagship of the i5 series, succeeding the Kaby Lake quad-core i5-7600K. The 8th generation of processors brings the largest performance uplift since Sandy Bridge by adding more cores at each of the i3, i5 and i7 product lines. Like the other Coffee Lake processors, the i5-8600K is built upon optimized 14nm architecture, marginally improved upon from Kaby Lake and Skylake. The 8600K has a 95W TDP and a nominal stock clock of 3.6 GHz, which boosts to 4.1 GHz for all six cores, 4.2 GHz for dual/quad and 4.3 GHz for single core. Early benchmarks put the i5-8600K’s effective speed 15% ahead of the i5-7600K. A 50% increase in multi-core speed is explained by two additional cores and thanks to the quad-core clock bump from 4 GHz on the 7600K to 4.2 GHz on the 8600K there is also an additional 5% performance boost across all workloads. All Coffee Lake processors require a 300-series chipset, making a straight CPU upgrade unfeasible despite sharing the same socket as their Z270 predecessors. Even though most games still use less than 4 cores simultaneously, the i5-8600K is a great choice for gamers (especially streamers) but for $80 less, the 8350K which is faster than last years 7600K and only marginally weaker for gaming than the 8600K is certainly well worth considering as well. [Oct '17 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) September 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. 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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