UserBenchmark: Intel Core i5-8400 vs i7-3930K

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IntelBX80619I73930K

BUY • $280

IntelBX80684I58400

BUY • $131

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Real World Speed

Performance profile from 345,392 user samples

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33,172 User Benchmarks

Best Bench: 85% Base clock 3.2 GHz
Worst Bench: 63% Base clock 3.8 GHz, turbo 4.15 GHz (avg)

Poor: 63% Great: 85%

SPEED RANK: 314^th / 1442

Gaming 74%

Battleship

Desktop 76%

Battleship

Workstation 64%

Destroyer

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: 212^th / 1442

Gaming 82%

Aircraft carrier

Desktop 83%

Aircraft carrier

Workstation 66%

Battle cruiser


Effective Speed Effective CPU Speed		74.4 %			81.8 %	Slightly faster effective speed. +10%


Memory Avg. Memory Latency	85.2 Pts	+0%	84.9 Pts
1-Core Avg. Single Core Speed	91.6 Pts		113 Pts	Faster single-core speed. +23%
2-Core Avg. Dual Core Speed	182 Pts		224 Pts	Faster dual-core speed. +23%
4-Core Avg. Quad Core Speed	344 Pts		434 Pts	Faster quad-core speed. +26%
8-Core Avg. Octa Core Speed	548 Pts		564 Pts	+3%


Memory OC Memory Latency	94.7 Pts	+1%	94.2 Pts
1-Core OC Single Core Speed	112 Pts		120 Pts	Slightly faster OC single-core speed. +7%
2-Core OC Dual Core Speed	223 Pts		237 Pts	Slightly faster OC dual-core speed. +6%
4-Core OC Quad Core Speed	432 Pts		471 Pts	Slightly faster OC quad-core speed. +9%
8-Core OC Octa Core Speed	684 Pts	+4%	657 Pts

Market Share

Based on 67,718,108 CPUs tested

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Market Share Market Share (trailing 30 days)	0.02 %		0.92 %	Insanely higher market share. +4,500%
Value Value For Money	74.2 %		101 %	Much better value. +36%
User Rating UBM User Rating	63 %	+3%	61 %
Price Price (score)	$280		$131	Much cheaper. +53%


Age Newest	149 Months		78 Months	Much more recent. +48%
TDP Thermal Design Power (TDP)	130 Watts		65 Watts	Much more energy efficient. +50%
Cores CPU Processing Cores	6 cores		6 cores
Threads CPU Processing Threads	12 threads	Hugely higher thread count. +100%	6 threads
Lithography Manufacturing process	32 nm		14 nm	Much newer manufacturing. +56%
Base Clock Base Clock Speed	3.2 GHz	Faster base frequency. +14%	2.8 GHz
Turbo Clock Turbo Clock Speed	3.8 GHz		4 GHz	Slightly faster turbo frequency. +5%
64-Core OC Multi Core Speed	841 Pts	Faster OC 64-core speed. +25%	675 Pts
64-Core Avg. Multi Core Speed	681 Pts	Faster 64-core speed. +16%	588 Pts


Series CPU Architecture	Sandy Bridge-E	Coffee Lake
Socket Motherboard Socket	FCLGA2011	FCLGA1151
Graphics Integrated Graphics	None	UHD 630
Launch Date Launch Date	Q4'11	Q4'17
Cache Cache	12 MB SmartCache	9 MB
Instruction Set Extensions Instruction Set Extensions	SSE4.2, AVX, AES	SSE4.1/4.2, AVX2
Lithography Lithography	32 nm	14 nm
Max Turbo Frequency Max Turbo Frequency	3.8 GHz	4.00 GHz
Bus Speed Bus Speed	5 GT/s DMI2	8 GT/s DMI3
Memory Types Memory Types	DDR3 1066/1333/1600	DDR4-2666
Memory Channels Max # of Memory Channels	4	2
Package Size Package Size	52.5mm x 45.0mm	37.5mm x 37.5mm
Hyper-Threading Tech Intel® Hyper-Threading Technology ‡	Yes	No
PCI Express Revision PCI Express Revision	2.0	3.0
Max # of PCI Express Lanes Max # of PCI Express Lanes	40	16
	More specs »	More specs »

The 3930K has an outstanding multi-core performance profile, almost as good as you can buy at any budget, which considering its relatively reasonable price tag really make it stand out from the crowd. The reason for the extraordinary multi-core benchmark scores is down to the 3930K's six cores. Having six cores effectively results in a 50% lead over quad core cpus and a 200% percent lead over dual core cpu's. Typical desktop users rarely use more than two cores simultaneously thus rendering the additional four cores largely redundant for consumer use. In terms of regular use this CPU will offer virtually no better real world performance than the leaders in my Desktop CPU Group Test. For server orientated workloads the 3930K offers both outstanding performance and superb value for money. ^{[Jun '13 CPUPro]}

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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]}

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CPU	GPU	SSD
Intel Core i5-13600K $279	Nvidia RTX 4060 $300	Crucial MX500 250GB $40
Intel Core i5-12400F $133	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182	Nvidia RTX 4070 $409	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16

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