IntelBX80648I75820K
IntelBX8070110100

6 Cores, 12 Threads @3.3GHz, Haswell-E.
Release date: Q3 2014.

Real World Speed
Performance profile from 126,257 user samples
101,694 User Benchmarks
Best Bench: 88% Base clock 3.3 GHz, turbo 4.6 GHz (avg)
Worst Bench: 68% Base clock 3.3 GHz, turbo 1.2 GHz (avg)
Poor: 68% Great: 88%
SPEED RANK: 281st / 1442
Gaming
Gaming 77%
Battleship
Desktop
Desktop 78%
Battleship
Workstation
Workstation 67%
Battle cruiser
24,563 User Benchmarks
Best Bench: 86% Base clock 3.6 GHz, turbo 4.1 GHz (avg)
Worst Bench: 65% Base clock 3.6 GHz, turbo 4.05 GHz (avg)
Poor: 65% Great: 86%
SPEED RANK: 240th / 1442
Gaming
Gaming 80%
Battleship
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
Effective Speed
Effective CPU Speed
76.8 % 79.9 % +4%
Memory
Avg. Memory Latency
86.4 Pts +1% 85.3 Pts
1-Core
Avg. Single Core Speed
96.3 Pts 120 Pts Faster single-core speed.
+25%
2-Core
Avg. Dual Core Speed
192 Pts 229 Pts Faster dual-core speed.
+19%
4-Core
Avg. Quad Core Speed
364 Pts 402 Pts Faster quad-core speed.
+10%
8-Core
Avg. Octa Core Speed
594 Pts 596 Pts +0%
Memory
OC Memory Latency
94 Pts 94.7 Pts +1%
1-Core
OC Single Core Speed
120 Pts 126 Pts +5%
2-Core
OC Dual Core Speed
237 Pts 250 Pts Slightly faster OC dual-core speed.
+5%
4-Core
OC Quad Core Speed
462 Pts +4% 444 Pts
8-Core
OC Octa Core Speed
737 Pts Faster OC octa-core speed.
+12%
659 Pts
Market Share
Based on 67,761,689 CPUs tested
Market Share
Market Share (trailing 30 days)
0.21 % +5% 0.2 %
Value
Value For Money
94.7 % 108 % Better value.
+14%
User Rating
UBM User Rating
66 % 90 % Much more popular.
+36%
Price
Price (score)
$130 $94 Cheaper.
+28%
Age
Newest
116 Months 47 Months Much more recent.
+59%
TDP
Thermal Design Power (TDP)
140 Watts 65 Watts Much more energy efficient.
+54%
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores
Threads
CPU Processing Threads
12 threads Much higher thread count.
+50%
8 threads
Lithography
Manufacturing process
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
3.3 GHz 3.6 GHz Slightly faster base frequency.
+9%
Turbo Clock
Turbo Clock Speed
3.6 GHz 4.3 GHz Faster turbo frequency.
+19%
64-Core
OC Multi Core Speed
933 Pts Much faster OC 64-core speed.
+41%
664 Pts
64-Core
Avg. Multi Core Speed
748 Pts Faster 64-core speed.
+22%
611 Pts
Series
CPU Architecture
Haswell-E Comet Lake
Socket
Motherboard Socket
LGA2011-V3 FCLGA1200
Graphics
Integrated Graphics
None UHD 630
Launch Date
Launch Date
Q3'14 Q2'20
Cache
Cache
15 MB SmartCache 6 MB Intel® Smart Cache
Instruction Set Extensions
Instruction Set Extensions
SSE4.2, AVX 2.0, AES Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Lithography
Lithography
22 nm 14 nm
Max Turbo Frequency
Max Turbo Frequency
3.6 GHz 4.30 GHz
Bus Speed
Bus Speed
0 GT/s 8 GT/s
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 128 GB
Memory Types
Memory Types
DDR4 1333/1600/2133 DDR4-2666
Memory Channels
Max # of Memory Channels
4 2
Memory Bandwidth
Max Memory Bandwidth
68 GB/s 41.6 GB/s
Processor Graphics
Processor Graphics ‡
None Intel® UHD Graphics 630
Package Size
Package Size
52.5mm x 45.0mm 37.5mm x 37.5mm
Turbo Boost Tech
Intel® Turbo Boost Technology ‡
2.0 2
PCI Express Revision
PCI Express Revision
3.0 3
Max # of PCI Express Lanes
Max # of PCI Express Lanes
28 16

More specs » More specs »
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The Intel Core i7-5820K is the cheapest of three (5820K,5930K,5960X) new Haswell-E prosumer/enthusiast processors. The 5820K sports six physical cores and twelve threads which allow for enormous processing throughput. Unfortunately Intel have somewhat handicapped the 5820K by setting its base clock at just 3.3 GHz, 0.7GHz lower than the class leading 4790K. Comparing the 4790K and 5820K shows that the cheaper i7-4790K is significantly faster at both single and dual threaded workloads. The additional two cores found in the 5820K are not relevant to general computing and as such the 5820K probably makes a better server rather than consumer proposition. The Haswell-E X99 architecture also requires DDR4 RAM which is currently far more expensive than DDR3. Overall the 5820K is a very expensive option and probably best avoided by the vast majority of consumers.  [Sep '14 CPUPro]

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The i3-10100 is Intel’s entry level 10th generation Comet Lake processor and represents the best value for money within the line-up. This quad-core hyper-threaded 65 Watt processor ships with a cooler and is capable of 4.3 GHz single and 4.1 GHz all core boosts. Although the i3-10100 requires a new LGA1200 motherboard, Intel have guaranteed that LGA1200 will be compatible with the next generation of Rocket Lake CPUs, expected later this year. Running at stock (2666 MHz) RAM frequency handicaps performance by as much as 15% so gamers should pair the 10100 with a Z490 motherboard. This will both open an upgrade path to higher tier "K" tier CPUs and unlock higher XMP RAM speeds (here is one of the builds from our EFps test lab). When paired with an RTX 2060S, the 10100 lags just 13% behind the i9-10900K flagship. The 10100 allows budget gamers to allocate more money towards a better GPU which often results in a stronger overall gaming system. At a retail price of $122 USD, the 10100 competes against AMD’s quad-core Ryzen 3 3300X. Game EFps and effective speed benchmarks show that the 10100’s lower memory latency gives it the edge. In addition, unlike the 3300X, the 10100 also packs integrated graphics with Quick Sync hardware encoding, which alleviates the need for desktop users to purchase a separate GPU. In order to achieve better value for money, it is necessary to consider the older generation 9100F, which, when paired with a 2060S, is 39% cheaper ($75 USD) for comparable gaming performance. [Jun '20 CPUPro]

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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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 Frequently Asked Questions

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HDDRAMUSB
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