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IntelBX80648I75820K
AMDFD8320FRHKBOX
▲ 669,878 ▼

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

VS
▲ 564,740 ▼

8 Cores, 8 Threads @3.5GHz, Piledriver.
Release date: Q4 2012.

Effective Speed 
+31%
Real World Speed
Performance profile from 208,148 user samples
Benchmark your CPU here
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
106,454 User Benchmarks
Best Bench: 65% Base clock 4.5 GHz, turbo 4.5 GHz (avg)
Worst Bench: 47% Base clock 3.5 GHz, turbo 3.55 GHz (avg)
Poor: 47% Great: 65%
SPEED RANK: 606th / 1442
Gaming
Gaming 59%
Gunboat
Desktop
Desktop 60%
Destroyer
Workstation
Workstation 45%
Speed boat
Effective Speed
Effective CPU Speed 		76.8 % Much faster effective speed.
+31% 		58.5 %
Average Score 
+64%
Memory
Avg. Memory Latency 		86.4 Pts Slightly lower memory latency.
+7% 		80.5 Pts
1-Core
Avg. Single Core Speed 		96.3 Pts Much faster single-core speed.
+64% 		58.8 Pts
2-Core
Avg. Dual Core Speed 		192 Pts Much faster dual-core speed.
+71% 		112 Pts
4-Core
Avg. Quad Core Speed 		364 Pts Hugely faster quad-core speed.
+82% 		200 Pts
8-Core
Avg. Octa Core Speed 		594 Pts Hugely faster octa-core speed.
+94% 		306 Pts
Overclocked Score 
+70%
Memory
OC Memory Latency 		94 Pts +3% 90.9 Pts
1-Core
OC Single Core Speed 		120 Pts Much faster OC single-core speed.
+74% 		68.9 Pts
2-Core
OC Dual Core Speed 		237 Pts Much faster OC dual-core speed.
+80% 		132 Pts
4-Core
OC Quad Core Speed 		462 Pts Hugely faster OC quad-core speed.
+96% 		236 Pts
8-Core
OC Octa Core Speed 		737 Pts Hugely faster OC octa-core speed.
+99% 		371 Pts
Value & Sentiment 
+162%
Market Share
Based on 67,695,335 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.14 % Hugely higher market share.
+600% 		0.02 %
Value
Value For Money 		94.7 % Much better value.
+31% 		72.3 %
User Rating
UBM User Rating 		66 % More popular.
+18% 		56 %
Price
Price (score) 		$130 $129 +1%
Nice To Haves 
+35%
Age
Newest 		116 Months More recent.
+16% 		138 Months
TDP
Thermal Design Power (TDP) 		140 Watts 125 Watts More energy efficient.
+11%
Cores
CPU Processing Cores 		6 cores 8 cores Much higher core count.
+33%
Threads
CPU Processing Threads 		12 threads Much higher thread count.
+50% 		8 threads
Lithography
Manufacturing process 		22 nm Much newer manufacturing.
+31% 		32 nm
Base Clock
Base Clock Speed 		3.3 GHz 3.5 GHz Slightly faster base frequency.
+6%
Turbo Clock
Turbo Clock Speed 		3.6 GHz 4 GHz Faster turbo frequency.
+11%
64-Core
OC Multi Core Speed 		933 Pts Hugely faster OC 64-core speed.
+144% 		382 Pts
64-Core
Avg. Multi Core Speed 		748 Pts Hugely faster 64-core speed.
+135% 		318 Pts
Specifications 
Series
CPU Architecture 		Haswell-E Piledriver
Socket
Motherboard Socket 		LGA2011-V3 AM3+
Graphics
Integrated Graphics 		None None
Conclusion 
Average Bench 76.8%
Average Bench 58.5%
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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]

MORE DETAILS

The AMD FX-8320 has the same architecture and specs as the FX-8350, the only difference being the base/turbo clocks of 3.5/4.0 GHz for the 8320 vs 4.0/4.2 GHz for the 8350. Comparing the two models shows that the 8320 lags the 8350 at stock speeds by around 10% but broadly matches it when both processors are overclocked. This combined with the 8320's considerably lower price tag makes the 8320 the better value proposition. In terms of outright performance, as with all AMD CPUs, the FX series have very strong multi-core performance but lag Intel considerably in terms of single and dual-core throughput. [Mar '14 CPUPro]

MORE DETAILS

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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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  • 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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  • - CPU tests include: integer, floating and string
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  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $132Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $186Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $34Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair 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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