IntelBX80684I58400
AMDFD8350FRHKBOX

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

VS
About

8 Cores, 8 Threads @4.0GHz, Piledriver.
Release date: Q4 2012.

Real World Speed
Performance profile from 385,758 user samples
138,591 User Benchmarks
Best Bench: 84% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 72% Base clock 2.8 GHz, turbo 2.8 GHz (avg)
Poor: 72% Great: 84%
SPEED RANK: 64th / 1206
Gaming
Gaming 80%
Battleship
Desktop
Desktop 80%
Aircraft carrier
Workstation
Workstation 56%
Gunboat
247,167 User Benchmarks
Best Bench: 54% Base clock 4.5 GHz, turbo 4.45 GHz (avg)
Worst Bench: 38% Base clock 4 GHz, turbo 1.35 GHz (avg)
Poor: 38% Great: 54%
SPEED RANK: 378th / 1206
Gaming
Gaming 49%
Yacht
Desktop
Desktop 49%
Yacht
Workstation
Workstation 39%
Jet ski
Effective Speed
Effective CPU Speed
79.8 % Much faster effective speed.
+64%
48.6 %
1-Core
Avg. Single Core Mixed Speed
116 Pts Much faster single-core speed.
+58%
73.2 Pts
2-Core
Avg. Dual Core Mixed Speed
231 Pts Much faster dual-core speed.
+63%
142 Pts
4-Core
Avg. Quad Core Mixed Speed
450 Pts Much faster quad-core speed.
+69%
267 Pts
8-Core
Avg. Octa Core Mixed Speed
638 Pts Much faster octa-core speed.
+41%
452 Pts
1-Core
OC Single Core Mixed Speed
122 Pts Much faster OC single-core speed.
+51%
81 Pts
2-Core
OC Dual Core Mixed Speed
242 Pts Much faster OC dual-core speed.
+50%
161 Pts
4-Core
OC Quad Core Mixed Speed
477 Pts Much faster OC quad-core speed.
+55%
307 Pts
8-Core
OC Octa Core Mixed Speed
694 Pts Much faster OC octa-core speed.
+31%
528 Pts
Market Share
Based on 22,610,001 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.97 % Slightly higher market share.
+14%
0.85 %
Value
Value For Money
87.3 % Much better value.
+46%
59.9 %
User Rating
UBM User Rating
77 % Slightly more popular.
+12%
69 %
Price
Price (score)
$200 $130 Much cheaper.
+35%
Age
Newest
26 Months Much more recent.
+70%
86 Months
TDP
Thermal Design Power (TDP)
65 Watts Much more energy efficient.
+48%
125 Watts
Cores
CPU Processing Cores
6 cores 8 cores Much higher core count.
+33%
Threads
CPU Processing Threads
6 threads 8 threads Much higher thread count.
+33%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm
Base Clock
Base Clock Speed
2.8 GHz 4 GHz Much faster base frequency.
+43%
Turbo Clock
Turbo Clock Speed
4 GHz 4.2 GHz +5%
64-Core
OC Multi Core Mixed Speed
699 Pts Much faster OC 64-core speed.
+32%
528 Pts
64-Core
Avg. Multi Core Mixed Speed
648 Pts Much faster 64-core speed.
+41%
459 Pts
Series
CPU Architecture
Coffee Lake Piledriver
Socket
Motherboard Socket
FCLGA1151 AM3+
Graphics
Integrated Graphics
UHD 630 None
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

In terms of raw single-core performance the flagship AMD FX-8350 is lagging behind intel's processor line-up by over two generations. The PassMark Single Thread scores for the i5-2500K vs the FX-8350 are 1863 to 1520 which shows that in terms of raw per-core processing the FX-8350 is lagging the two year old i5 by 23%. Where the AMD FX makes up is on multi-core performance, with a score of 9156 vs 6745, the AMD leads the Intel 2500K by 36% making it the far more capable multi-threaded server orientated performer. The AMD is also cheaper but significantly more power hungry which counts strongly against it as a server proposition. The FX-8350 could be a good fit for specific server use cases but for general consumer use, which is single and dual core intensive, Intel's two year old i5-2500K delivers better performance. [May '13 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) December 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop 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 i5-9400F $145Nvidia GTX 1660S (Super) $260Crucial MX500 250GB $45
Intel Core i5-9600K $200AMD RX 590 $180Samsung 850 Evo 120GB $58
Intel Core i7-9700K $369Nvidia GTX 1650S (Super) $160Samsung 850 Pro 512GB $230
HDDRAMUSB
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback