IntelBX80684I58400
IntelBX80684I38350K

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

4 Cores, 4 Threads @4.0GHz, Coffee Lake.
Release date: Q3 2017.

CSGO
Dust 2 1080p Max
233 EFps 270 EFps Better CSGO EFps.
+16%
GTAV
Franklin & Lamar 1080p Max
107 EFps 108 EFps +1%
Overwatch
Temple of Anubis 1080p Max
138 EFps +3% 134 EFps
PUBG
M249 Training 1080p Max
123 EFps 125 EFps +2%
Fortnite
UserBenchmark Island 1080p Max
130 EFps 145 EFps Better Fortnite EFps.
+12%
Real World Speed
Performance profile from 246,355 user samples
225,330 User Benchmarks
Best Bench: 91% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 72% Base clock 2.8 GHz, turbo 0.8 GHz (avg)
Poor: 72% Great: 91%
SPEED RANK: 72nd / 1275
Gaming
Gaming 85%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 70%
Battle cruiser
21,025 User Benchmarks
Best Bench: 96% Base clock 4 GHz, turbo 5.1 GHz (avg)
Worst Bench: 70% Base clock 4 GHz, turbo 1.55 GHz (avg)
Poor: 70% Great: 96%
SPEED RANK: 83rd / 1275
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 64%
Destroyer
Effective Speed
Effective CPU Speed
84.9 % +1% 84.3 %
Memory
Avg. Memory Latency
88.4 Pts 90.6 Pts +2%
1-Core
Avg. Single Core Mixed Speed
115 Pts 123 Pts Slightly faster single-core speed.
+7%
2-Core
Avg. Dual Core Mixed Speed
228 Pts 244 Pts Slightly faster dual-core speed.
+7%
4-Core
Avg. Quad Core Mixed Speed
442 Pts 450 Pts +2%
8-Core
Avg. Octa Core Mixed Speed
627 Pts Much faster octa-core speed.
+37%
458 Pts
Memory
OC Memory Latency
95 Pts 96.6 Pts +2%
1-Core
OC Single Core Mixed Speed
122 Pts 147 Pts Faster OC single-core speed.
+20%
2-Core
OC Dual Core Mixed Speed
242 Pts 291 Pts Faster OC dual-core speed.
+20%
4-Core
OC Quad Core Mixed Speed
476 Pts 560 Pts Faster OC quad-core speed.
+18%
8-Core
OC Octa Core Mixed Speed
694 Pts Faster OC octa-core speed.
+24%
558 Pts
Market Share
Based on 38,720,248 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.83 % Insanely higher market share.
+1,283%
0.06 %
Value
Value For Money
96.9 % +3% 94.4 %
User Rating
UBM User Rating
62 % More popular.
+13%
55 %
Price
Price (score)
$172 Slightly cheaper.
+7%
$184
Age
Newest
39 Months +2% 40 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 4 GHz Much faster base frequency.
+43%
Turbo Clock
Turbo Clock Speed
4 GHz 4 GHz
64-Core
OC Multi Core Mixed Speed
694 Pts Faster OC 64-core speed.
+24%
558 Pts
64-Core
Avg. Multi Core Mixed Speed
634 Pts Much faster 64-core speed.
+37%
462 Pts
Series
CPU Architecture
Coffee Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 UHD 630
Cache
Cache
9 MB 8 MB
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) PCG 2015C (130W)
Memory Types
Memory Types
DDR4-2666 DDR4-2400
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.15 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology ‡
2.0 No

More specs » More specs »
ADVERTISEMENT

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 quad core i3-8350K hails from Intel’s most recent (and as yet unreleased) generation of Coffee Lake processors. It has a stock clock of 4.0 GHz, 8MB of cache and a TDP of 95W. The 8350K is the first i3 processor to feature four cores (previous generations of i3s had two cores and four threads). With this eighth generation of processors, Intel has introduced a step change in their nomenclature which witnesses the old quad core i5s become the new quad core i3s. Our benchmarks show a 25% increase in effective speed between generations of i3 8350K vs 7350K and near equivalence between the outgoing i5-7600K and the new i3-8350K. Although the price points of Coffee Lake are not yet known, if Intel keep them roughly in line with the previous generations (i3 ~= $140) this will represent the best improvement in value for money since Sandy Bridge as the 8350K at $140 would be 34.8% cheaper than a 7600K at $215. Cynics among us will see this as an effort to fend off competition from AMD’s new multi-core Ryzen processors. It appears Intel may have been successful with this move as early benchmarks from the 8350K suggest that it beats the more expensive 8 core Ryzen 7 1700 in single and quad core performance by 25%. The 8350K is a great choice for gaming builds, but the budget will also need to factor in a complementary motherboard based on the new 300 series chipset. Expect the quad core i3-8100 which is the 8350K’s little sister featuring a base clock of 3.6 GHz, to follow shortly. [Aug '17 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) January 2021 CPU Rankings.

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

ADVERTISEMENT

Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-10600K $257Nvidia RTX 3060-Ti $400Crucial MX500 250GB $47
Intel Core i5-9600K $219Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i5-10400F $161Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $40
HDDRAMUSB
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $29Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback