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IntelBX80648I75820K
IntelBX80684I58400
▲ 669,879 ▼

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

VS
▲ 615,303 ▼

6 Cores, 6 Threads @2.8GHz, Coffee Lake.
Release date: Q4 2017.

Effective Speed 
+6%
Real World Speed
Performance profile from 413,914 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
312,220 User Benchmarks
Best Bench: 89% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 61% Base clock 2.8 GHz, turbo 0.8 GHz (avg)
Poor: 61% Great: 89%
SPEED RANK: 212th / 1442
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
Effective Speed
Effective CPU Speed 		76.8 % 81.8 % Slightly faster effective speed.
+6%
Average Score 
+9%
Memory
Avg. Memory Latency 		86.4 Pts +2% 84.9 Pts
1-Core
Avg. Single Core Speed 		96.3 Pts 113 Pts Faster single-core speed.
+17%
2-Core
Avg. Dual Core Speed 		192 Pts 224 Pts Faster dual-core speed.
+17%
4-Core
Avg. Quad Core Speed 		364 Pts 434 Pts Faster quad-core speed.
+19%
8-Core
Avg. Octa Core Speed 		594 Pts Slightly faster octa-core speed.
+5% 		564 Pts
Overclocked Score 
+2%
Memory
OC Memory Latency 		94 Pts 94.2 Pts +0%
1-Core
OC Single Core Speed 		120 Pts 120 Pts
2-Core
OC Dual Core Speed 		237 Pts 237 Pts
4-Core
OC Quad Core Speed 		462 Pts 471 Pts +2%
8-Core
OC Octa Core Speed 		737 Pts Faster OC octa-core speed.
+12% 		657 Pts
Value & Sentiment 
+138%
Market Share
Based on 67,713,620 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.16 % 1.05 % Hugely higher market share.
+556%
Value
Value For Money 		94.7 % 101 % Slightly better value.
+6%
User Rating
UBM User Rating 		66 % Slightly more popular.
+8% 		61 %
Price
Price (score) 		$130 +1% $131
Nice To Haves 
+5%
Age
Newest 		116 Months 78 Months Much more recent.
+33%
TDP
Thermal Design Power (TDP) 		140 Watts 65 Watts Much more energy efficient.
+54%
Cores
CPU Processing Cores 		6 cores 6 cores
Threads
CPU Processing Threads 		12 threads Hugely higher thread count.
+100% 		6 threads
Lithography
Manufacturing process 		22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed 		3.3 GHz Faster base frequency.
+18% 		2.8 GHz
Turbo Clock
Turbo Clock Speed 		3.6 GHz 4 GHz Faster turbo frequency.
+11%
64-Core
OC Multi Core Speed 		933 Pts Much faster OC 64-core speed.
+38% 		675 Pts
64-Core
Avg. Multi Core Speed 		748 Pts Faster 64-core speed.
+27% 		588 Pts
Specifications 
Series
CPU Architecture 		Haswell-E Coffee Lake
Socket
Motherboard Socket 		LGA2011-V3 FCLGA1151
Graphics
Integrated Graphics 		None UHD 630
Launch Date
Launch Date 		Q3'14 Q4'17
Cache
Cache 		15 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions 		SSE4.2, AVX 2.0, AES SSE4.1/4.2, AVX2
Lithography
Lithography 		22 nm 14 nm
Recommended Price
Recommended Customer Price 		$389.00 - $396.00 N/A
Max Turbo Frequency
Max Turbo Frequency 		3.6 GHz 4.00 GHz
Bus Speed
Bus Speed 		0 GT/s 8 GT/s DMI3
Memory Types
Memory Types 		DDR4 1333/1600/2133 DDR4-2666
Memory Channels
Max # of Memory Channels 		4 2
Processor Graphics
Processor Graphics ‡ 		None Intel® UHD Graphics 630
Package Size
Package Size 		52.5mm x 45.0mm 37.5mm x 37.5mm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		Yes No
Max # of PCI Express Lanes
Max # of PCI Express Lanes 		28 16

More specs » More specs »
Conclusion 
Average Bench 76.8%
Average Bench 81.8%
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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 i5-8400 is a competitively priced hex-core processor from Intel’s 8th generation of Core processors (Coffee Lake). Along with the release of the unlocked i5-8600K, this is the first time that six-core processors have featured in the i5 line-up. Like the other Coffee Lake processors, the i5-8400 is based upon an improved version of Intel’s 14nm architecture which featured in both Skylake and Kaby Lake. Early benchmarks reveal that for average quad core usage (most games employ a maximum of four cores) the i5-8400 performs way above its pay grade. It achieves quad core mixed speeds close to Intel’s outgoing 2017 flagship the $300, quad-core, 8 thread i7-7700k, which to date has been a strong favourite for high-end gaming setups. On paper, the i5-8400 has a base clock of 2.8 GHz (Intel are significantly downplaying the performance of this SKU by giving it a relatively low nominal base clock), an all core boost of 3.8 GHz (this is the effective base clock figure that counts) and a single core boost of 4 GHz. This compares reasonably well to the i5-8600K which has a base clock of 3.6 GHz, all core boost of 4.1 GHz and a single core boost of 4.3 GHz. The i5-8400 also features 9MB of L3 cache and an energy-thrifty TDP of 65W. Priced at under $190, the i5-8400 offers fantastic value for money. Unfortunately, like the other Coffee Lake processors, the i5-8400 will require a new 300 series motherboard, and at the time of writing, the only available version is Intel’s high-end Z370 which isn't an ideal pairing for the i5-8400. The Z series motherboards are designed to cater for the unlocked and overclockable "K" SKUs. Cheaper 300 series motherboards will be available in 2018 at which time the 8400 will offer even better value for money. [Oct '17 CPUPro]

MORE DETAILS

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Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
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