IntelBX80684I58400
AMDYD1700BBAEBOX

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

Real World Speed
Performance profile from 61,930 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
48,642 User Benchmarks
Best Bench: 99% Base clock 3.65 GHz, turbo 4.65 GHz (avg)
Worst Bench: 73% Base clock 3.8 GHz, turbo 1.35 GHz (avg)
Poor: 73% Great: 99%
SPEED RANK: 46th / 1104
Gaming
Gaming 85%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 91%
Nuclear submarine
Effective Speed
Effective CPU Speed
91.8 % Slightly faster effective speed.
+7%
85.4 %
SC Mixed
Avg. Single Core Mixed Speed
120 Pts Faster single-core speed.
+18%
102 Pts
QC Mixed
Avg. Quad Core Mixed Speed
466 Pts Faster quad-core speed.
+17%
397 Pts
MC Mixed
Avg. Multi Core Mixed Speed
680 Pts 1126 Pts Much faster multi-core speed.
+66%
SC Mixed
OC Single Core Mixed Speed
125 Pts Slightly faster OC single-core speed.
+7%
117 Pts
QC Mixed
OC Quad Core Mixed Speed
486 Pts +5% 464 Pts
MC Mixed
OC Multi Core Mixed Speed
720 Pts 1325 Pts Hugely faster OC multi-core speed.
+84%
Market Share
Based on 8,857,875 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.23 % Much higher market share.
+31%
0.94 %
Value
Value For Money
110 % Better value.
+15%
95.8 %
User Rating
UBM User Rating
102 % 112 % Slightly more popular.
+10%
Price
Price (score)
$179 Cheaper.
+17%
$215
Age
Newest
7 Months Much more recent.
+50%
14 Months
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 14 nm
Base Clock
Base Clock Speed
2.8 GHz 3 GHz Slightly faster base frequency.
+7%
Turbo Clock
Turbo Clock Speed
4 GHz Slightly faster turbo frequency.
+8%
3.7 GHz
SC Int
Single Core Integer Speed
122 Pts Slightly faster single-core int speed.
+8%
113 Pts
SC Float
Single Core Floating Point Speed
129 Pts Slightly faster single-core fp speed.
+7%
121 Pts
QC Int
Quad Core Integer Speed
473 Pts Slightly faster quad-core int speed.
+6%
447 Pts
QC Float
Quad Core Floating Point Speed
501 Pts +4% 483 Pts
MC Int
Multi Core Integer Speed
701 Pts 1282 Pts Hugely faster multi-core int speed.
+83%
MC Float
Multi Core Floating Point Speed
744 Pts 1328 Pts Much faster multi-core fp speed.
+78%
Series
CPU Architecture
Coffee Lake (2017) Zen (2017)
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 AMD Ryzen 7 1700 is the least powerful of three new Ryzen 7 CPUs. The 1700 model has base and turbo clocks of 3.0 and 3.7 GHz respectively. Both of its more expensive siblings, the 1700X and 1800X, have higher clocks but they also have TDPs of 95 watts whereas the 1700 is rated at just 65 watts. Comparing IPC between Ryzen and Kaby Lake shows that Kaby Lake leads by a maximum of 9% which is great news for workstation users as this allows the 1700 to beat Intel's 6850K in multi-core workloads at almost half the price. Although the 1700 has great IPC it's somewhat limited by its relatively low (by Kaby Lake standards) clock speed which holds it back a little in both gaming and desktop workloads. For multi-core workstation use, the Ryzen 7 1700 represents the best value for money we have ever seen. [Mar '17 CPUPro]

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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]

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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.
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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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How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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  • - 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.
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