IntelBX80673I97940X
IntelBX80648I75820K

14 Cores, 28 Threads @3.10 GHz, Skylake.
Release date ≈ Q4 2017.

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

Real World Speed
Performance profile from 106,254 user samples
4,560 User Benchmarks
Best Bench: 95% Base clock 3.1 GHz, turbo 4.55 GHz (avg)
Worst Bench: 73% Base clock 3.1 GHz, turbo 0.6 GHz (avg)
Poor: 73% Great: 95%
SPEED RANK: 205th / 1451
Gaming
Gaming 83%
Aircraft carrier
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 100%
Nuclear submarine
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: 289th / 1451
Gaming
Gaming 77%
Battleship
Desktop
Desktop 78%
Battleship
Workstation
Workstation 67%
Battle cruiser
Effective Speed
Effective CPU Speed
83.3 % Slightly faster effective speed.
+8%
76.8 %
Memory
Avg. Memory Latency
76.5 Pts 86.4 Pts Lower memory latency.
+13%
1-Core
Avg. Single Core Speed
124 Pts Faster single-core speed.
+29%
96.3 Pts
2-Core
Avg. Dual Core Speed
246 Pts Faster dual-core speed.
+28%
192 Pts
4-Core
Avg. Quad Core Speed
482 Pts Much faster quad-core speed.
+32%
364 Pts
8-Core
Avg. Octa Core Speed
947 Pts Much faster octa-core speed.
+59%
594 Pts
Memory
OC Memory Latency
88.6 Pts 94 Pts Slightly lower OC memory latency.
+6%
1-Core
OC Single Core Speed
141 Pts Faster OC single-core speed.
+18%
120 Pts
2-Core
OC Dual Core Speed
282 Pts Faster OC dual-core speed.
+19%
237 Pts
4-Core
OC Quad Core Speed
561 Pts Faster OC quad-core speed.
+21%
462 Pts
8-Core
OC Octa Core Speed
1112 Pts Much faster OC octa-core speed.
+51%
737 Pts
Market Share
Based on 68,071,969 CPUs tested
Market Share
Market Share (trailing 30 days)
0.01 % 0.14 % Insanely higher market share.
+1,300%
Value
Value For Money
66 % 94.7 % Much better value.
+43%
User Rating
UBM User Rating
52 % 66 % More popular.
+27%
Price
Price (score)
$647 $130 Much cheaper.
+80%
Age
Newest
80+ Months Much more recent.
+32%
118 Months
64-Core
OC Multi Core Speed
2625 Pts Hugely faster OC 64-core speed.
+181%
933 Pts
64-Core
Avg. Multi Core Speed
2179 Pts Hugely faster 64-core speed.
+191%
748 Pts
Launch Date
Launch Date
Q3'17 Q3'14
Cache
Cache
19.25 MB 15 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2, AVX-512 SSE4.2, AVX 2.0, AES
Recommended Price
Recommended Customer Price
$1387.00 - $1399.00 $389.00 - $396.00
Max Turbo Frequency
Max Turbo Frequency
4.30 GHz 3.6 GHz
Bus Speed
Bus Speed
8 GT/s DMI3 0 GT/s
Max Memory Size
Max Memory Size (dependent on memory type)
128 GB 64 GB
Memory Types
Memory Types
DDR4-2666 DDR4 1333/1600/2133
Max # of PCI Express Lanes
Max # of PCI Express Lanes
44 28

More specs » More specs »
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Guys, this is for workstation, not gaming. [Oct '21 Gamejang]

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) June 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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  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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