IntelBX80646I74790
IntelBX80671I76800K

4 Cores, 8 Threads @3.6GHz, Haswell.
Release date: Q2 2014.

6 Cores, 12 Threads @3.4GHz, Broadwell-E.
Release date: Q2 2016.

Real World Speed
Performance profile from 305,223 user samples
255,027 User Benchmarks
Best Bench: 80% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 58% Base clock 3.6 GHz, turbo 1.5 GHz (avg)
Poor: 58% Great: 80%
SPEED RANK: 371st / 1442
Gaming
Gaming 71%
Battleship
Desktop
Desktop 75%
Battleship
Workstation
Workstation 58%
Gunboat
50,196 User Benchmarks
Best Bench: 90% Base clock 3.4 GHz, turbo 4.1 GHz (avg)
Worst Bench: 71% Base clock 3.4 GHz, turbo 1.2 GHz (avg)
Poor: 71% Great: 90%
SPEED RANK: 221st / 1442
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 82%
Aircraft carrier
Workstation
Workstation 71%
Battleship
Effective Speed
Effective CPU Speed
71.4 % 80.9 % Faster effective speed.
+13%
Memory
Avg. Memory Latency
82.6 Pts 86 Pts +4%
1-Core
Avg. Single Core Speed
98.4 Pts 107 Pts Slightly faster single-core speed.
+9%
2-Core
Avg. Dual Core Speed
187 Pts 214 Pts Faster dual-core speed.
+14%
4-Core
Avg. Quad Core Speed
327 Pts 408 Pts Faster quad-core speed.
+25%
8-Core
Avg. Octa Core Speed
482 Pts 660 Pts Much faster octa-core speed.
+37%
Memory
OC Memory Latency
93.6 Pts 94.9 Pts +1%
1-Core
OC Single Core Speed
109 Pts 124 Pts Faster OC single-core speed.
+14%
2-Core
OC Dual Core Speed
214 Pts 248 Pts Faster OC dual-core speed.
+16%
4-Core
OC Quad Core Speed
377 Pts 483 Pts Faster OC quad-core speed.
+28%
8-Core
OC Octa Core Speed
551 Pts 770 Pts Much faster OC octa-core speed.
+40%
Market Share
Based on 67,825,951 CPUs tested
Market Share
Market Share (trailing 30 days)
0.68 % Hugely higher market share.
+871%
0.07 %
Value
Value For Money
87.1 % 106 % Better value.
+22%
User Rating
UBM User Rating
62 % 65 % +5%
Price
Price (score)
$135 $103 Cheaper.
+24%
Age
Newest
120 Months 95 Months More recent.
+21%
TDP
Thermal Design Power (TDP)
84 Watts Much more energy efficient.
+40%
140 Watts
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads 12 threads Much higher thread count.
+50%
Lithography
Manufacturing process
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
3.6 GHz Slightly faster base frequency.
+6%
3.4 GHz
Turbo Clock
Turbo Clock Speed
4 GHz Slightly faster turbo frequency.
+5%
3.8 GHz
64-Core
OC Multi Core Speed
556 Pts 956 Pts Much faster OC 64-core speed.
+72%
64-Core
Avg. Multi Core Speed
495 Pts 827 Pts Much faster 64-core speed.
+67%
Series
CPU Architecture
Haswell Broadwell-E
Socket
Motherboard Socket
FCLGA1150 LGA2011-V3
Graphics
Integrated Graphics
HD 4600 None
Launch Date
Launch Date
Q2'14 Q2'16
Cache
Cache
8 MB SmartCache 15 MB
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$303.00 - $312.00 N/A
Max Turbo Frequency
Max Turbo Frequency
4 GHz 3.8 GHz
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 128 GB
Memory Types
Memory Types
DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V DDR4 2400/2133
Memory Channels
Max # of Memory Channels
2 4
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4600 None
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Revision
PCI Express Revision
Up to 3.0 3.0
Max # of PCI Express Lanes
Max # of PCI Express Lanes
16 28

More specs » More specs »
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The Core i7-4790 is the third upgrade to Intel's flagship quad core hyper-threaded CPU. This version, like its predecessor the i7-4771, gets a 100 MHz bump in stock frequency and additionally the i7-4790 also gets a 100 MHz turbo frequency bump. These improvements (~4%) are marginal and practically impossible to discern in day to day use. Looking at a benchmark comparison between the 4771 and 4790 verifies that there is little difference between the two CPUs. Although the i7-4790 isn't much of a step forward, it's still one of the best (locked) mainstream processors on the market. AMD hasn't been able to compete with Intel on single threaded performance for several years, consequently Intel have no need to push the envelope. Overclockers should wait for the 4790K which is rumoured to be released shortly. [May '14 CPUPro]

MORE DETAILS

The Core i7-6800K is the weakest of four new 14 nm Broadwell-E prosumer CPUs. This model has six cores with base and turbo frequencies of 3.4 and 3.8 GHz, a TDP of 140 watts and 28 PCIe 3.0 lanes. The 6800K closely matches, and supersedes, the very popular Haswell-E 5820K. Because of its MSRP of around $500, this CPU only makes sense for niche use cases which include graphics design, video production or multi GPU gaming. Comparing the 6800K and 6700K shows that for typical desktop use, at stock clocks, the 6800K actually lags the 6700K by around 10%. This is because desktop computing largely depends on single core performance and the Skylake i7-6700K is both clocked higher (Base clock 4.0 GHz vs 3.4 GHz) and has higher IPC due to its one generation lead over the 6800K. If the 6800K proves to be a capable overclocker then it may challenge the 6700K on a range of core-heavy use cases, time will tell. [Jun '16 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) May 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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  • - Reports are generated and presented on userbenchmark.com
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 Frequently Asked Questions

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HDDRAMUSB
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