AMDFD8370FRHKBOX
IntelBX80684I58400

8 Cores, 8 Threads
@4.0GHz Piledriver (2012)

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

Real World Speed
Performance profile from 33,987 user samples
11,518 User Benchmarks
Best Bench: 64% Base clock 4.8 GHz
Worst Bench: 48% Base clock 4 GHz, turbo 1.35 GHz (avg)
Poor: 48% Great: 64%
SPEED RANK: 261st / 1117
Gaming
Gaming 56%
Gunboat
Desktop
Desktop 56%
Gunboat
Workstation
Workstation 45%
Speed boat
22,469 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 78% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Poor: 78% Great: 94%
SPEED RANK: 32nd / 1117
Gaming
Gaming 90%
Aircraft carrier
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 65%
Battle cruiser
Effective Speed
Effective CPU Speed
56.1 % 89.8 % Much faster effective speed.
+60%
SC Mixed
Avg. Single Core Mixed Speed
75.5 Pts 118 Pts Much faster single-core speed.
+56%
QC Mixed
Avg. Quad Core Mixed Speed
275 Pts 456 Pts Much faster quad-core speed.
+66%
MC Mixed
Avg. Multi Core Mixed Speed
475 Pts 664 Pts Much faster multi-core speed.
+40%
SC Mixed
OC Single Core Mixed Speed
85.5 Pts 123 Pts Much faster OC single-core speed.
+44%
QC Mixed
OC Quad Core Mixed Speed
321 Pts 478 Pts Much faster OC quad-core speed.
+49%
MC Mixed
OC Multi Core Mixed Speed
559 Pts 707 Pts Faster OC multi-core speed.
+26%
Market Share
Based on 9,844,806 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.15 % 1.57 % Hugely higher market share.
+947%
Value
Value For Money
77.1 % 108 % Much better value.
+40%
User Rating
UBM User Rating
58 % 107 % Hugely more popular.
+84%
Price
Price (score)
$125 Much cheaper.
+30%
$179
Age
Newest
46 Months 9 Months Hugely more recent.
+80%
TDP
Thermal Design Power (TDP)
125 Watts 65 Watts Much more energy efficient.
+48%
Cores
CPU Processing Cores
8 cores Much higher core count.
+33%
6 cores
Threads
CPU Processing Threads
8 threads Much higher thread count.
+33%
6 threads
Lithography
Manufacturing process
32 nm 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
4 GHz Much faster base frequency.
+43%
2.8 GHz
Turbo Clock
Turbo Clock Speed
4.3 GHz Slightly faster turbo frequency.
+8%
4 GHz
SC Int
Single Core Integer Speed
92.4 Pts 118 Pts Faster single-core int speed.
+28%
SC Float
Single Core Floating Point Speed
79.4 Pts 128 Pts Much faster single-core fp speed.
+61%
QC Int
Quad Core Integer Speed
339 Pts 462 Pts Much faster quad-core int speed.
+36%
QC Float
Quad Core Floating Point Speed
295 Pts 500 Pts Much faster quad-core fp speed.
+69%
MC Int
Multi Core Integer Speed
571 Pts 681 Pts Faster multi-core int speed.
+19%
MC Float
Multi Core Floating Point Speed
485 Pts 740 Pts Much faster multi-core fp speed.
+53%
Series
CPU Architecture
Piledriver (2012) Coffee Lake (2017)
Socket
Motherboard Socket
AM3+ FCLGA1151
Graphics
Integrated Graphics
None UHD 630
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The FX-8370 is a top of the range black edition Vishera eight core processor based on AMD’s Piledriver architecture. It was launched in September 2014 and is both cheaper and faster than the FX-8350. The FX range offers high performance and this particular processor holds a world record for reaching an incredible 8.7 GHz when overclocked under lab conditions. For typical users however, the FX-8370 runs at 4.0/4.3 GHz (base/turbo) and typically hits 5.0 GHz when overclocked. Its effective speed is 83 which is currently only exceeded by AMD's 20% more expensive FX-9590 (scoring 85), making it relatively good value for money. Eight cores aren’t necessary for most applications, but things are changing and if you heavily rely on multi-threaded applications then the FX-8370 may be a good choice. [Dec '14 CPUPro]

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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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Processor Rankings (Price vs Performance) July 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.
  • 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.

UserBenchmark of the month

How it works

  • - 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.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

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CPUGPUSSD
Intel Core i7-8700K $317Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $120
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $176SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $945SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $58HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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