IntelBX80684I58400
AMD100-100000071BOX

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

8 Cores, 16 Threads @3.6GHz, Zen2.
Release date: Q3 2019.

Real World Speed
Performance profile from 108,491 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
4,934 User Benchmarks
Best Bench: 117% Base clock 4.35 GHz, turbo 4.35 GHz (avg)
Worst Bench: 99% Base clock 3.6 GHz, turbo 2.3 GHz (avg)
Poor: 99% Great: 117%
SPEED RANK: 17th / 1173
Gaming
Gaming 112%
UFO
Desktop
Desktop 109%
UFO
Workstation
Workstation 117%
UFO
Effective Speed
Effective CPU Speed
88.6 % 112 % Faster effective speed.
+27%
SC Mixed
Avg. Single Core Mixed Speed
116 Pts 135 Pts Faster single-core speed.
+16%
QC Mixed
Avg. Quad Core Mixed Speed
450 Pts 527 Pts Faster quad-core speed.
+17%
MC Mixed
Avg. Multi Core Mixed Speed
645 Pts 1424 Pts Hugely faster multi-core speed.
+121%
SC Mixed
OC Single Core Mixed Speed
122 Pts 141 Pts Faster OC single-core speed.
+16%
QC Mixed
OC Quad Core Mixed Speed
477 Pts 551 Pts Faster OC quad-core speed.
+16%
MC Mixed
OC Multi Core Mixed Speed
697 Pts 1498 Pts Hugely faster OC multi-core speed.
+115%
Market Share
Based on 18,553,118 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.15 % 2.46 % Hugely higher market share.
+114%
Value
Value For Money
102 % 107 % +5%
User Rating
UBM User Rating
112 % Slightly more popular.
+13%
99 %
Price
Price (score)
$199 Much cheaper.
+40%
$329
Age
Newest
21 Months 0 Months Hugely more recent.
+100%
TDP
Thermal Design Power (TDP)
65 Watts 65 Watts
Cores
CPU Processing Cores
6 cores 8 cores Much higher core count.
+33%
Threads
CPU Processing Threads
6 threads 16 threads Hugely higher thread count.
+167%
Lithography
Manufacturing process
14 nm 7 nm Much newer manufacturing.
+50%
Base Clock
Base Clock Speed
2.8 GHz 3.6 GHz Faster base frequency.
+29%
Turbo Clock
Turbo Clock Speed
4 GHz 4.4 GHz Slightly faster turbo frequency.
+10%
SC Int
Single Core Integer Speed
118 Pts 129 Pts Slightly faster single-core int speed.
+9%
SC Float
Single Core Floating Point Speed
128 Pts 154 Pts Faster single-core fp speed.
+20%
QC Int
Quad Core Integer Speed
460 Pts 507 Pts Slightly faster quad-core int speed.
+10%
QC Float
Quad Core Floating Point Speed
498 Pts 604 Pts Faster quad-core fp speed.
+21%
MC Int
Multi Core Integer Speed
665 Pts 1422 Pts Hugely faster multi-core int speed.
+114%
MC Float
Multi Core Floating Point Speed
738 Pts 1489 Pts Hugely faster multi-core fp speed.
+102%
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

The 8-core, 16-thread Ryzen 7 3700X hails from the middle of AMD’s latest range of 7nm silicon Zen 2 CPUs. The new processors are launched alongside the new X570 chipset, whilst still being backward compatible with 300 and 400 series motherboards. They are also PCIe 4.0 enabled, allowing double the data transfer speeds compared to PCIe 3.0. The 3700X has a boost clock of 4.4 GHz, 32 MB of L3 cache, supports 3200 MHz DDR4 memory and has a power draw of just 65W TDP. At an entry price of $329 USD, it is positioned to offer superb multi-core value for money. Out of the box, the 3700X, 3600X and 3600 achieve similar quad core speeds, which is important for gamers. In addition, the 3700X, with its 16 threads really excels at multi-core processing, achieving a 25% multi-core speed advantage over the 12 threaded 3600X. Early benchmarks rank the 3700X just a few places behind Intel’s 8-core, 16-thread i9 9900K with a 10% lower peak overclocked benchmark. However, it cannot be ignored that the 3700X is about $150 USD (32%) cheaper and includes a cooler unlike the 9900K. [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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