UserBenchmark: Intel Core i5-8400 vs i7-8700

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IntelBX80684I58400

BUY • $131

IntelBX80684I78700

BUY • $200

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Real World Speed

Performance profile from 661,787 user samples

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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

349,567 User Benchmarks

Best Bench: 94% Base clock 3.2 GHz, turbo 4.3 GHz (avg)
Worst Bench: 75% Base clock 3.2 GHz, turbo 0.8 GHz (avg)

Poor: 75% Great: 94%

SPEED RANK: 161^st / 1442

Gaming 87%

Aircraft carrier

Desktop 89%

Aircraft carrier

Workstation 78%

Battleship


Effective Speed Effective CPU Speed		81.8 %			87 %	Slightly faster effective speed. +6%


Memory Avg. Memory Latency	84.9 Pts	88.7 Pts	+4%
1-Core Avg. Single Core Speed	113 Pts	126 Pts	Faster single-core speed. +12%
2-Core Avg. Dual Core Speed	224 Pts	245 Pts	Slightly faster dual-core speed. +9%
4-Core Avg. Quad Core Speed	434 Pts	459 Pts	Slightly faster quad-core speed. +6%
8-Core Avg. Octa Core Speed	564 Pts	748 Pts	Much faster octa-core speed. +33%


Memory OC Memory Latency	94.2 Pts	95.5 Pts	+1%
1-Core OC Single Core Speed	120 Pts	132 Pts	Slightly faster OC single-core speed. +10%
2-Core OC Dual Core Speed	237 Pts	263 Pts	Faster OC dual-core speed. +11%
4-Core OC Quad Core Speed	471 Pts	518 Pts	Slightly faster OC quad-core speed. +10%
8-Core OC Octa Core Speed	657 Pts	822 Pts	Faster OC octa-core speed. +25%

Market Share

Based on 67,752,815 CPUs tested

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Market Share Market Share (trailing 30 days)	0.86 %		1.14 %	Much higher market share. +33%
Value Value For Money	101 %	Slightly better value. +6%	95.3 %
User Rating UBM User Rating	61 %		71 %	More popular. +16%
Price Price (score)	$131	Much cheaper. +35%	$200


Age Newest	78 Months	78 Months
TDP Thermal Design Power (TDP)	65 Watts	65 Watts
Cores CPU Processing Cores	6 cores	6 cores
Threads CPU Processing Threads	6 threads	12 threads	Hugely higher thread count. +100%
Lithography Manufacturing process	14 nm	14 nm
Base Clock Base Clock Speed	2.8 GHz	3.2 GHz	Faster base frequency. +14%
Turbo Clock Turbo Clock Speed	4 GHz	4.6 GHz	Faster turbo frequency. +15%
64-Core OC Multi Core Speed	675 Pts	1043 Pts	Much faster OC 64-core speed. +55%
64-Core Avg. Multi Core Speed	588 Pts	936 Pts	Much faster 64-core speed. +59%


Series CPU Architecture	Coffee Lake	Coffee Lake
Socket Motherboard Socket	FCLGA1151	FCLGA1151
Graphics Integrated Graphics	UHD 630	UHD 630
Cache Cache	9 MB	12 MB
Max Turbo Frequency Max Turbo Frequency	4.00 GHz	4.60 GHz
Graphics Max Dynamic Frequency Graphics Max Dynamic Frequency	1.05 GHz	1.20 GHz
Hyper-Threading Tech Intel® Hyper-Threading Technology ‡	No	Yes
TSX-NI Intel® TSX-NI	No	Yes
vPro Tech Intel® vPro™ Technology ‡	No	Yes
Stable Image Platform Program (SIPP) Intel® Stable Image Platform Program (SIPP)	No	Yes
Trusted Execution Tech Intel® Trusted Execution Technology ‡	No	Yes
	More specs »	More specs »

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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The high-end hex core, 12 thread i7-8700 is second in Intel’s line up of 8th generation Coffee Lake CPUs that witnesses an increase in the number of cores at each SKU, as well as further refinement on the 14nm architecture as seen in the 6th and 7th generations. The i7-8700 features a TDP of 65W, 12MB of L3 Cache and 16 PCIe lanes. Although the 8700 has a base clock of 3.2 GHz it has an all core boost of 4.3 GHz and a single core boost of 4.6 GHz. These are unusually high clocks for a non-K SKU, Intel have historically clocked their non-K SKUs around 10% lower than the flagship K variants but with Coffee Lake, the 8700 is almost a match for a stock 8700K. Priced at $320, the i7-8700 offers exceptional single, quad and multi-core processing power to the mainstream market but unfortunately a new 300 series chipset will also need to be factored into the purchase. AMD’s comparably priced Ryzen 7 1700X is an 8 core 16 thread processor which is around 20% faster at multi-threaded tasks, but has around 20% slower single and quad core performance so the choice between these two processors is use case dependant but generally favours Intel for most desktop users whose workloads are typically single or dual core bound. ^{[Oct '17 CPUPro]}

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CPU	GPU	SSD
Intel Core i5-13600K $273	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 $177	Nvidia RTX 4070 $539	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37	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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