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IntelBX80684I58400
IntelBX80677I57600K
▲ 625,388 ▼

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

VS
▲ 7418,201 ▼

4 Cores, 4 Threads @3.8GHz, Kaby Lake.
Release date: Q1 2017.

Effective Speed 
+8%
Real World Speed
Performance profile from 507,226 user samples
Benchmark your CPU here
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: 231st / 1468
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
195,006 User Benchmarks
Best Bench: 89% Base clock 3.8 GHz, turbo 5.15 GHz (avg)
Worst Bench: 59% Base clock 3.8 GHz, turbo 1.05 GHz (avg)
Poor: 59% Great: 89%
SPEED RANK: 318th / 1468
Gaming
Gaming 76%
Battleship
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 58%
Gunboat
Effective Speed
Effective CPU Speed 		81.8 % Slightly faster effective speed.
+8% 		75.8 %
External Data: 1080p 
+5%
30 Oct19|Gamers Nexus
Intel i9-9900KS Review: Overclocki... 		5 % F118 10%, GTAV 6% TWarW2 1%
Average Score 
+8%
Memory
Avg. Memory Latency 		84.9 Pts 85.4 Pts +1%
1-Core
Avg. Single Core Speed 		113 Pts 120 Pts Slightly faster single-core speed.
+6%
2-Core
Avg. Dual Core Speed 		224 Pts 237 Pts Slightly faster dual-core speed.
+6%
4-Core
Avg. Quad Core Speed 		434 Pts Faster quad-core speed.
+15% 		379 Pts
8-Core
Avg. Octa Core Speed 		564 Pts Much faster octa-core speed.
+40% 		403 Pts
Overclocked Score 
+3%
Memory
OC Memory Latency 		94.2 Pts 95.8 Pts +2%
1-Core
OC Single Core Speed 		120 Pts 144 Pts Faster OC single-core speed.
+20%
2-Core
OC Dual Core Speed 		237 Pts 286 Pts Faster OC dual-core speed.
+21%
4-Core
OC Quad Core Speed 		471 Pts 490 Pts +4%
8-Core
OC Octa Core Speed 		657 Pts Much faster OC octa-core speed.
+30% 		504 Pts
Value & Sentiment 
+25%
Market Share
Based on 68,906,387 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.83 % Hugely higher market share.
+131% 		0.36 %
Value
Value For Money 		98.8 % +3% 95.4 %
User Rating
UBM User Rating 		62 % 74 % More popular.
+19%
Price
Price (score) 		$140 $120 Cheaper.
+14%
Nice To Haves 
+19%
Age
Newest 		85 Months Slightly more recent.
+10% 		94 Months
TDP
Thermal Design Power (TDP) 		65 Watts More energy efficient.
+29% 		91 Watts
Cores
CPU Processing Cores 		6 cores Much higher core count.
+50% 		4 cores
Threads
CPU Processing Threads 		6 threads Much higher thread count.
+50% 		4 threads
Lithography
Manufacturing process 		14 nm 14 nm
Base Clock
Base Clock Speed 		2.8 GHz 3.8 GHz Much faster base frequency.
+36%
Turbo Clock
Turbo Clock Speed 		4 GHz 4.2 GHz +5%
64-Core
OC Multi Core Speed 		675 Pts Much faster OC 64-core speed.
+32% 		510 Pts
64-Core
Avg. Multi Core Speed 		588 Pts Much faster 64-core speed.
+44% 		407 Pts
Specifications 
Series
CPU Architecture 		Coffee Lake Kaby Lake
Socket
Motherboard Socket 		FCLGA1151 FCLGA1151
Graphics
Integrated Graphics 		UHD 630 HD 630
Launch Date
Launch Date 		Q4'17 Q1'17
Cache
Cache 		9 MB 6 MB
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX 2.0
Recommended Price
Recommended Customer Price 		N/A $242.00 - $243.00
Max Turbo Frequency
Max Turbo Frequency 		4.00 GHz 4.20 GHz
Memory Types
Memory Types 		DDR4-2666 DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡ 		Intel® UHD Graphics 630 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency 		350 MHz 350.00 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.05 GHz 1.15 GHz
TSX-NI
Intel® TSX-NI 		No Yes
PCI Express Configurations
PCI Express Configurations ‡ 		Up to 1x16 or 2x8 or 1x8+2x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
Conclusion 
Average Bench 81.8%
Average Bench 75.8%

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

The i5-7600K targets high end gamers, it sits just behind the flagship i7-7700K in Intel’s Kaby Lake lineup. The 7600K will likely be the most popular gaming CPU of 2017 (some competition from AMD’s upcoming Zen/Ryzen CPUs, would be very welcome). Comparing the 7600K and 6600K shows that the two processors are very closely matched and comparing the 7600K vs the hyper-threaded 7700K highlights the relative strength of the 7700K for workstation performance. There are no significant architectural differences between Kaby Lake and Skylake so, when fully overclocked, the two generations should perform similarly but Kaby Lake offers faster base clocks, improved speed shift technology which helps CPU responsiveness, and better integrated graphics. [Jan '17 CPUPro]

MORE DETAILS

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