IntelBX80684I58400
AMDYD270XBGAFBOX

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

VS
About

8 Cores, 16 Threads @3.7GHz, Zen+.
Release date: Q2 2018.

Real World Speed
Performance profile from 283,250 user samples
109,239 User Benchmarks
Best Bench: 84% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 64% Base clock 2.8 GHz, turbo 1.25 GHz (avg)
Poor: 64% Great: 84%
SPEED RANK: 52nd / 1182
Gaming
Gaming 78%
Battleship
Desktop
Desktop 80%
Aircraft carrier
Workstation
Workstation 56%
Gunboat
174,011 User Benchmarks
Best Bench: 87% Base clock 4.3 GHz, turbo 4.25 GHz (avg)
Worst Bench: 74% Base clock 3.7 GHz, turbo 2.2 GHz (avg)
Poor: 74% Great: 87%
SPEED RANK: 40th / 1182
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 84%
Aircraft carrier
Effective Speed
Effective CPU Speed
78.3 % 82.4 % Slightly faster effective speed.
+5%
1-Core
Avg. Single Core Mixed Speed
116 Pts 119 Pts +3%
2-Core
Avg. Dual Core Mixed Speed
230 Pts 235 Pts +2%
4-Core
Avg. Quad Core Mixed Speed
447 Pts 463 Pts +4%
8-Core
Avg. Octa Core Mixed Speed
633 Pts 858 Pts Much faster octa-core speed.
+36%
64-Core
Avg. Multi Core Mixed Speed
641 Pts 1288 Pts Hugely faster 64-core speed.
+101%
1-Core
OC Single Core Mixed Speed
122 Pts 125 Pts +2%
2-Core
OC Dual Core Mixed Speed
242 Pts 248 Pts +2%
4-Core
OC Quad Core Mixed Speed
475 Pts 490 Pts +3%
8-Core
OC Octa Core Mixed Speed
694 Pts 953 Pts Much faster OC octa-core speed.
+37%
64-Core
OC Multi Core Mixed Speed
698 Pts 1387 Pts Hugely faster OC 64-core speed.
+99%
Market Share
Based on 19,434,833 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.06 % 1.88 % Much higher market share.
+77%
Value
Value For Money
88.3 % +2% 86.3 %
User Rating
UBM User Rating
71 % 128 % Hugely more popular.
+80%
Price
Price (score)
$179 Cheaper.
+24%
$235
Age
Newest
22 Months 16 Months More recent.
+27%
TDP
Thermal Design Power (TDP)
65 Watts Much more energy efficient.
+38%
105 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 12 nm Slightly newer manufacturing.
+14%
Base Clock
Base Clock Speed
2.8 GHz 3.7 GHz Much faster base frequency.
+32%
Turbo Clock
Turbo Clock Speed
4 GHz 4.3 GHz Slightly faster turbo frequency.
+8%
Series
CPU Architecture
Coffee Lake Zen+
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]

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The 8 core, 16 thread 2700X is AMD’s second generation Ryzen 7 flagship following in the wake of the Ryzen 7 1800X which continues to offer excellent multi-core value for money. This new Pinnacle Ridge processor features the Zen+ architecture with 12nm lithography compared to 14nm previously. Whilst there is no increase in the number of cores, the stock base / boost clocks appear to have received a bump up to 3.7 / 4.3 GHz from 3.6 / 4.0 GHz. The 2700X is compatible with both the new 400 series and 300 series of motherboards. Early benchmarks indicate that the 2700X has a slightly greater effective speed than the 1800X, although further benchmarks are necessary to quantify this. The expected launch price of $329 includes a Wraith Prism cooler and is in the same price bracket as the 1800X and Intel’s Coffee Lake i7-8700K. Whilst the 6 core, 12 thread 8700K beats the 2700X in single and quad core performance by about 10%, the 2700X wins on multi-core workloads. PC gaming and desktop performance is generally governed by six or less cores but the 2700X offers unbeatable value for money for workstation users. [Apr '18 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) August 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 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.
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.

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  • - 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.
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  • - Explore your best upgrade options with a virtual PC build.
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CPUGPUSSD
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Intel Core i5-9600K $230AMD RX 5700 XT $400Samsung 850 Pro 256GB $195
HDDRAMUSB
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WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $695SanDisk Extreme 32GB $48
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