IntelBX80684I58400
AMDYD270XBGAFBOX

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

8 Cores, 16 Threads
@3.7GHz Zen+ (2018)

Real World Speed
Performance profile from 15,973 user samples
13,288 User Benchmarks
Best Bench: 95% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 86% Base clock 2.8 GHz, turbo 1.6 GHz (avg)
Poor: 86% Great: 95%
SPEED RANK: 30th / 1104
Gaming
Gaming 92%
Nuclear submarine
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 67%
Battle cruiser
2,685 User Benchmarks
Best Bench: 106% Base clock 4.4 GHz, turbo 4.35 GHz (avg)
Worst Bench: 90% Base clock 3.7 GHz, turbo 3.55 GHz (avg)
Poor: 90% Great: 106%
SPEED RANK: 12th / 1104
Gaming
Gaming 100%
UFO
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 106%
UFO
Effective Speed
Effective CPU Speed
91.8 % 100 % Slightly faster effective speed.
+9%
SC Mixed
Avg. Single Core Mixed Speed
120 Pts 120 Pts
QC Mixed
Avg. Quad Core Mixed Speed
466 Pts 466 Pts
MC Mixed
Avg. Multi Core Mixed Speed
680 Pts 1308 Pts Hugely faster multi-core speed.
+92%
SC Mixed
OC Single Core Mixed Speed
125 Pts 127 Pts +2%
QC Mixed
OC Quad Core Mixed Speed
486 Pts 495 Pts +2%
MC Mixed
OC Multi Core Mixed Speed
720 Pts 1415 Pts Hugely faster OC multi-core speed.
+97%
Market Share
Based on 8,851,887 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.3 % Much higher market share.
+44%
0.9 %
Value
Value For Money
110 % Slightly better value.
+13%
97.3 %
User Rating
UBM User Rating
101 % More popular.
+25%
81 %
Price
Price (score)
$179 Much cheaper.
+43%
$315
Age
Newest
7 Months 1 Months Hugely more recent.
+86%
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%
SC Int
Single Core Integer Speed
122 Pts 123 Pts +1%
SC Float
Single Core Floating Point Speed
129 Pts 131 Pts +2%
QC Int
Quad Core Integer Speed
473 Pts 480 Pts +1%
QC Float
Quad Core Floating Point Speed
501 Pts 516 Pts +3%
MC Int
Multi Core Integer Speed
701 Pts 1368 Pts Hugely faster multi-core int speed.
+95%
MC Float
Multi Core Floating Point Speed
744 Pts 1419 Pts Hugely faster multi-core fp speed.
+91%
Series
CPU Architecture
Coffee Lake (2017) Zen+ (2018)
Socket
Motherboard Socket
FCLGA1151 AM4
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

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 four or less cores but the 2700X offers unbeatable value for money for workstation users. [Apr '18 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) May 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
AMD Ryzen 5 1600 $169Nvidia GTX 1070 $447Samsung 850 Evo 250GB $100
Intel Core i7-8700K $325Nvidia GTX 1060-6GB $295Samsung 850 Evo 500GB $137
Intel Core i7-7700K $290AMD RX 480 $330Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $960SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback