IntelBX80637I73770K
IntelBX80648I75820K

4 Cores, 8 Threads @3.5GHz, Ivy Bridge.
Release date: Q2 2012.

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

Real World Speed
Performance profile from 267,673 user samples
165,979 User Benchmarks
Best Bench: 83% Base clock 3.5 GHz, turbo 4.7 GHz (avg)
Worst Bench: 59% Base clock 3.5 GHz, turbo 3.7 GHz (avg)
Poor: 59% Great: 83%
SPEED RANK: 353rd / 1442
Gaming
Gaming 72%
Battleship
Desktop
Desktop 76%
Battleship
Workstation
Workstation 58%
Gunboat
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
Effective Speed
Effective CPU Speed
72.4 % 76.8 % Slightly faster effective speed.
+6%
Memory
Avg. Memory Latency
86.9 Pts +1% 86.4 Pts
1-Core
Avg. Single Core Speed
96.5 Pts +0% 96.3 Pts
2-Core
Avg. Dual Core Speed
182 Pts 192 Pts Slightly faster dual-core speed.
+5%
4-Core
Avg. Quad Core Speed
314 Pts 364 Pts Faster quad-core speed.
+16%
8-Core
Avg. Octa Core Speed
458 Pts 594 Pts Faster octa-core speed.
+30%
Memory
OC Memory Latency
96.4 Pts +3% 94 Pts
1-Core
OC Single Core Speed
116 Pts 120 Pts +3%
2-Core
OC Dual Core Speed
222 Pts 237 Pts Slightly faster OC dual-core speed.
+7%
4-Core
OC Quad Core Speed
382 Pts 462 Pts Faster OC quad-core speed.
+21%
8-Core
OC Octa Core Speed
557 Pts 737 Pts Much faster OC octa-core speed.
+32%
Market Share
Based on 67,753,224 CPUs tested
Market Share
Market Share (trailing 30 days)
0.17 % 0.2 % Higher market share.
+18%
Value
Value For Money
82.2 % 94.7 % Better value.
+15%
User Rating
UBM User Rating
62 % 66 % Slightly more popular.
+6%
Price
Price (score)
$175 $130 Cheaper.
+26%
Age
Newest
144 Months 116 Months More recent.
+19%
TDP
Thermal Design Power (TDP)
77 Watts Much more energy efficient.
+45%
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 22 nm
Base Clock
Base Clock Speed
3.5 GHz Slightly faster base frequency.
+6%
3.3 GHz
Turbo Clock
Turbo Clock Speed
3.9 GHz Slightly faster turbo frequency.
+8%
3.6 GHz
64-Core
OC Multi Core Speed
573 Pts 933 Pts Much faster OC 64-core speed.
+63%
64-Core
Avg. Multi Core Speed
471 Pts 748 Pts Much faster 64-core speed.
+59%
Series
CPU Architecture
Ivy Bridge Haswell-E
Socket
Motherboard Socket
FCLGA1155 LGA2011-V3
Graphics
Integrated Graphics
HD 4000 None
Launch Date
Launch Date
Q2'12 Q3'14
Cache
Cache
8 MB SmartCache 15 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.2, AVX 2.0, AES
Recommended Price
Recommended Customer Price
$332.00 - $342.00 $389.00 - $396.00
Max Turbo Frequency
Max Turbo Frequency
3.9 GHz 3.6 GHz
Bus Speed
Bus Speed
5 GT/s DMI 0 GT/s
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 1333/1600 DDR4 1333/1600/2133
Memory Channels
Max # of Memory Channels
2 4
Memory Bandwidth
Max Memory Bandwidth
25.6 GB/s 68 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4000 None
Package Size
Package Size
37.5mm x 37.5mm 52.5mm x 45.0mm
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
No Yes

More specs » More specs »
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The third gen Ivy Bridge Core i7-3770K can't really be described as a consumer orientated processor. With 8 threads and four cores its capabilities are better aligned to server use. For price insensitive consumers that want the best of the best, this is currently one of the fastest processors available. The PassMark Single Thread score of 2080 points puts the 3770K right at the top of the pack in terms of raw processing power and real world performance. The GeekBench and PassMark scores of 17210 and 9653 are within 20% or so of the best we have ever seen. Despite the near record breaking processing throughputs the 3770K is only rated at 77 TDP, which is very low by historical standards. For typical consumer use there are better value propositions out there. [May '13 CPUPro]

MORE DETAILS

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]

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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How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - 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
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware

 Frequently Asked Questions

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The Best.
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Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $177Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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