IntelBX80684I58400
AMD100-100000023BOX

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

12 Cores, 24 Threads @3.8GHz, Zen2.
Release date: Q3 2019.

Real World Speed
Performance profile from 105,425 user samples
103,557 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 79% Base clock 2.8 GHz, turbo 0.8 GHz (avg)
Poor: 79% Great: 94%
SPEED RANK: 58th / 1173
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 64%
Destroyer
1,868 User Benchmarks
Best Bench: 129% Base clock 3.8 GHz, turbo 4.45 GHz (avg)
Worst Bench: 113% Base clock 0.8 GHz, turbo 0.8 GHz (avg)
Poor: 113% Great: 129%
SPEED RANK: 3rd / 1173
Gaming
Gaming 123%
UFO
Desktop
Desktop 120%
UFO
Workstation
Workstation 162%
UFO
Effective Speed
Effective CPU Speed
88.6 % 123 % Much faster effective speed.
+39%
SC Mixed
Avg. Single Core Mixed Speed
116 Pts 136 Pts Faster single-core speed.
+17%
QC Mixed
Avg. Quad Core Mixed Speed
450 Pts 537 Pts Faster quad-core speed.
+19%
MC Mixed
Avg. Multi Core Mixed Speed
645 Pts 2144 Pts Hugely faster multi-core speed.
+232%
SC Mixed
OC Single Core Mixed Speed
122 Pts 144 Pts Faster OC single-core speed.
+18%
QC Mixed
OC Quad Core Mixed Speed
477 Pts 561 Pts Faster OC quad-core speed.
+18%
MC Mixed
OC Multi Core Mixed Speed
697 Pts 2314 Pts Hugely faster OC multi-core speed.
+232%
Market Share
Based on 18,553,809 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.14 % Slightly higher market share.
+10%
1.04 %
Value
Value For Money
102 % +1% 101 %
User Rating
UBM User Rating
112 % Much more popular.
+37%
82 %
Price
Price (score)
$199 Much cheaper.
+60%
$499
Age
Newest
21 Months 0 Months Hugely more recent.
+100%
TDP
Thermal Design Power (TDP)
65 Watts Much more energy efficient.
+38%
105 Watts
Cores
CPU Processing Cores
6 cores 12 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads
6 threads 24 threads Hugely higher thread count.
+300%
Lithography
Manufacturing process
14 nm 7 nm Much newer manufacturing.
+50%
Base Clock
Base Clock Speed
2.8 GHz 3.8 GHz Much faster base frequency.
+36%
Turbo Clock
Turbo Clock Speed
4 GHz 4.6 GHz Slightly faster turbo frequency.
+15%
SC Int
Single Core Integer Speed
118 Pts 132 Pts Slightly faster single-core int speed.
+12%
SC Float
Single Core Floating Point Speed
128 Pts 157 Pts Faster single-core fp speed.
+23%
QC Int
Quad Core Integer Speed
460 Pts 515 Pts Slightly faster quad-core int speed.
+12%
QC Float
Quad Core Floating Point Speed
498 Pts 616 Pts Faster quad-core fp speed.
+24%
MC Int
Multi Core Integer Speed
665 Pts 2189 Pts Hugely faster multi-core int speed.
+229%
MC Float
Multi Core Floating Point Speed
738 Pts 2299 Pts Hugely faster multi-core fp speed.
+212%
Series
CPU Architecture
Coffee Lake Zen2
Socket
Motherboard Socket
FCLGA1151 AM4
Graphics
Integrated Graphics
UHD 630 None
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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

Early Q3 of 2019 welcomes the Ryzen 9 3900X, AMD’s current top of the range, third generation Ryzen flagship which is setting a new standard for high-end workstation processors. This is AMD’s first Ryzen 9 processor and is a 12-core, 24-thread CPU based on their latest 7nm Zen 2 microarchitecture. A second Ryzen 9 CPU in the form of the 16-core, 32-thread 3950X is expected around early Q4 of 2019. The 3900X has a boost/base clock of 3.8/4.6 GHz, 64 MB of L3 cache (double the L3 on the rest of 3000 series), support for 3200 MHz DDR4 system memory and a TDP of 105W. All this, plus a Wraith Prism cooler, at a relatively accessible launch price of $499 USD. By comparison, Intel’s coolerless 12-core, 24 thread i9-9920X is currently available for $1200 USD which is well over twice as expensive as the 3900X. Early benchmarks illustrate that the extra dollar spend does not translate to extra performance, with the i9-9920X having just a 4% greater peak overclocked benchmark than the 3900X across single, quad and multi-core workloads. Currently in terms of multi-core performance at this price point, there is no threat from Intel. The only real competitor is the upcoming 16-core, 32-thread 3950X ($749 USD) or possibly the slightly more affordable (but significantly worse value for money) 8-core, 16-thread Ryzen 7 3800X ($399 USD) which sits just below in the new Zen 2 line-up. Like the others in the 3000 series, the Ryzen 9 3900X can plug into the new PCIe 4.0 enabled X570 motherboard via an AM4 socket, as well as 400 and 300 series motherboards. [Jul '19 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) July 2019 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]

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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.
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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.

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  • - CPU tests include: integer, floating and string.
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  • - 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.
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  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
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