UserBenchmark: AMD Ryzen 7 7800X3D vs Intel Core i5-8400

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IntelBX80684I58400

BUY • $131

AMD100-100000910WOF

BUY • $355

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Real World Speed

Performance profile from 316,243 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

4,023 User Benchmarks

Best Bench: 123% Base clock 4.2 GHz, turbo 4.8 GHz (avg)
Worst Bench: 107% Base clock 4.2 GHz, turbo 4.55 GHz (avg)

Poor: 107% Great: 123%

SPEED RANK: 23^rd / 1442

Gaming 117%

UFO

Desktop 118%

UFO

Workstation 118%

UFO


Effective Speed Effective CPU Speed		81.8 %			117 %	Much faster effective speed. +43%


Memory Avg. Memory Latency	84.9 Pts	95.5 Pts	Lower memory latency. +12%
1-Core Avg. Single Core Speed	113 Pts	193 Pts	Much faster single-core speed. +71%
2-Core Avg. Dual Core Speed	224 Pts	380 Pts	Much faster dual-core speed. +70%
4-Core Avg. Quad Core Speed	434 Pts	743 Pts	Much faster quad-core speed. +71%
8-Core Avg. Octa Core Speed	564 Pts	1318 Pts	Hugely faster octa-core speed. +134%


Memory OC Memory Latency	94.2 Pts	99.6 Pts	Slightly lower OC memory latency. +6%
1-Core OC Single Core Speed	120 Pts	206 Pts	Much faster OC single-core speed. +72%
2-Core OC Dual Core Speed	237 Pts	414 Pts	Much faster OC dual-core speed. +75%
4-Core OC Quad Core Speed	471 Pts	798 Pts	Much faster OC quad-core speed. +69%
8-Core OC Octa Core Speed	657 Pts	1543 Pts	Hugely faster OC octa-core speed. +135%

Market Share

Based on 67,792,911 CPUs tested

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Market Share Market Share (trailing 30 days)	0.87 %	Slightly higher market share. +6%	0.82 %
Value Value For Money	101 %		109 %	Slightly better value. +9%
User Rating UBM User Rating	61 %		90 %	Much more popular. +48%
Price Price (score)	$131	Much cheaper. +63%	$355


Age Newest	79 Months	12+ Months	Hugely more recent. +85%
64-Core OC Multi Core Speed	675 Pts	1861 Pts	Hugely faster OC 64-core speed. +176%
64-Core Avg. Multi Core Speed	588 Pts	1749 Pts	Hugely faster 64-core speed. +197%

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 AMD 7000X3D CPUs have the same core architecture as the rest of the 7000 series but they have one group of eight "3D" cores with extra cache. The “3D” cores are priced higher but run at 10% lower clocks. For most real-world tasks performance is comparable to the 7000X variant. Cache sensitive scenarios such as low res. canned game benchmarks with an RTX 4090 ($2,000) benefit at the cost of everything else. Be wary of sponsored reviews with cherry picked games that showcase the wins, ignore frame drops and gloss over the losses. Also watch out for AMD’s army of Neanderthal social media accounts on reddit, forums and youtube, they will be singing their own praises as usual. AMD continue to develop “Advanced Marketing” relationships with select youtubers with the obvious aim of compensating for second tier products with first tier marketing. PC gamers considering a 7000X3D CPU need to work on their critical thinking skills: Influencers are paid handsomely to promote overpriced niche products (X3D, EPYC, Threadripper etc.). Rational gamers have little reason to look further than the $300 13600K which offers comparable real-world gaming and better desktop performance at a fraction of the price. Workstation users (and RTX 4080+ gamers) may find value in higher core CPUs such as the 16-core $400 13700K. Despite offering better performance at lower prices, as long as Intel continues to sample and sponsor marketers that are mostly funded by AMD, they will struggle to win market share. ^{[Apr '23 CPUPro]}

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CPU	GPU	SSD
Intel Core i5-13600K $254	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 $163	Nvidia RTX 4070 $539	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) $28	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $48	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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