IntelBX80684I58400
AMDFD8350FRHKBOX

6 Cores, 6 Threads
@2.8GHz Coffee Lake (2017)

8 Cores, 8 Threads
@4.0GHz Piledriver (2012)

Real World Speed
Performance profile from 150,655 user samples
22,469 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 78% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Poor: 78% Great: 94%
SPEED RANK: 32nd / 1117
Gaming
Gaming 90%
Aircraft carrier
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 65%
Battle cruiser
128,186 User Benchmarks
Best Bench: 63% Base clock 4.85 GHz, turbo 4.85 GHz (avg)
Worst Bench: 46% Base clock 4.2 GHz, turbo 1.4 GHz (avg)
Poor: 46% Great: 63%
SPEED RANK: 268th / 1117
Gaming
Gaming 55%
Gunboat
Desktop
Desktop 55%
Yacht
Workstation
Workstation 44%
Speed boat
Effective Speed
Effective CPU Speed
89.8 % Much faster effective speed.
+62%
55.4 %
SC Mixed
Avg. Single Core Mixed Speed
118 Pts Much faster single-core speed.
+60%
73.9 Pts
QC Mixed
Avg. Quad Core Mixed Speed
456 Pts Much faster quad-core speed.
+68%
271 Pts
MC Mixed
Avg. Multi Core Mixed Speed
664 Pts Much faster multi-core speed.
+40%
474 Pts
SC Mixed
OC Single Core Mixed Speed
123 Pts Much faster OC single-core speed.
+49%
82.8 Pts
QC Mixed
OC Quad Core Mixed Speed
478 Pts Much faster OC quad-core speed.
+54%
311 Pts
MC Mixed
OC Multi Core Mixed Speed
707 Pts Faster OC multi-core speed.
+30%
545 Pts
Market Share
Based on 9,846,660 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.57 % Slightly higher market share.
+9%
1.44 %
Value
Value For Money
108 % Better value.
+25%
86.2 %
User Rating
UBM User Rating
106 % Much more popular.
+71%
62 %
Price
Price (score)
$179 $90 Much cheaper.
+50%
Age
Newest
9 Months Hugely more recent.
+87%
69 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%
SC Int
Single Core Integer Speed
118 Pts Much faster single-core int speed.
+33%
88.8 Pts
SC Float
Single Core Floating Point Speed
128 Pts Much faster single-core fp speed.
+64%
78.2 Pts
QC Int
Quad Core Integer Speed
462 Pts Much faster quad-core int speed.
+40%
330 Pts
QC Float
Quad Core Floating Point Speed
500 Pts Much faster quad-core fp speed.
+74%
288 Pts
MC Int
Multi Core Integer Speed
681 Pts Faster multi-core int speed.
+23%
554 Pts
MC Float
Multi Core Floating Point Speed
740 Pts Much faster multi-core fp speed.
+56%
474 Pts
Series
CPU Architecture
Coffee Lake (2017) Piledriver (2012)
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 sever 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) July 2018 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. 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 i7-8700K $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $120
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $176SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $945SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $58HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback