AMDFD8350FRHKBOX
IntelBX80684I58400

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

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

Real World Speed
Performance profile from 110,993 user samples
106,220 User Benchmarks
Best Bench: 65% Base clock 4.9 GHz, turbo 4.85 GHz (avg)
Worst Bench: 47% Base clock 4 GHz, turbo 1.35 GHz (avg)
Poor: 47% Great: 65%
SPEED RANK: 209th / 985
Gaming
Gaming 57%
Gunboat
Desktop
Desktop 56%
Gunboat
Workstation
Workstation 45%
Yacht
4,773 User Benchmarks
Best Bench: 96% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 88% Base clock 2.8 GHz, turbo 1.1 GHz (avg)
Poor: 88% Great: 96%
SPEED RANK: 23rd / 985
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 68%
Battle cruiser
Effective Speed
Effective CPU Speed
56.9 % 92.5 % Much faster effective speed.
+63%
SC Mixed
Avg. Single Core Mixed Speed
76.2 Pts 120 Pts Much faster single-core speed.
+57%
QC Mixed
Avg. Quad Core Mixed Speed
279 Pts 471 Pts Much faster quad-core speed.
+69%
MC Mixed
Avg. Multi Core Mixed Speed
485 Pts 691 Pts Much faster multi-core speed.
+42%
SC Mixed
OC Single Core Mixed Speed
84.8 Pts 126 Pts Much faster OC single-core speed.
+49%
QC Mixed
OC Quad Core Mixed Speed
319 Pts 490 Pts Much faster OC quad-core speed.
+54%
MC Mixed
OC Multi Core Mixed Speed
556 Pts 729 Pts Much faster OC multi-core speed.
+31%
Market Share
Based on 7,515,518 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.62 % Hugely higher market share.
+161%
0.62 %
Value
Value For Money
79.6 % 111 % Much better value.
+40%
User Rating
UBM User Rating
77 % 113 % Much more popular.
+47%
Price
Price (score)
$119 Much cheaper.
+33%
$179
Age
Newest
64 Months 4 Months Hugely more recent.
+94%
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
4.2 GHz +5% 4 GHz
SC Int
Single Core Integer Speed
91.9 Pts 122 Pts Much faster single-core int speed.
+33%
SC Float
Single Core Floating Point Speed
79 Pts 129 Pts Much faster single-core fp speed.
+63%
QC Int
Quad Core Integer Speed
339 Pts 478 Pts Much faster quad-core int speed.
+41%
QC Float
Quad Core Floating Point Speed
294 Pts 506 Pts Much faster quad-core fp speed.
+72%
MC Int
Multi Core Integer Speed
564 Pts 709 Pts Faster multi-core int speed.
+26%
MC Float
Multi Core Floating Point Speed
485 Pts 752 Pts Much faster multi-core fp speed.
+55%
Series
CPU Architecture
Piledriver (2012) Coffee Lake (2017)
Socket
Motherboard Socket
AM3+ FCLGA1151
Graphics
Integrated Graphics
None UHD 630
ADVERTISEMENT

In terms of raw single-core performance the flagship AMD FX-8350 is lagging behind intel's processor line-up by over two generations. The PassMark Single Thread scores for the i5-2500K vs the FX-8350 are 1863 to 1520 which shows that in terms of raw per-core processing the FX-8350 is lagging the two year old i5 by 23%. Where the AMD FX makes up is on multi-core performance, with a score of 9156 vs 6745, the AMD leads the Intel 2500K by 36% making it the far more capable multi-threaded server orientated performer. The AMD is also cheaper but significantly more power hungry which counts strongly against it as a sever proposition. The FX-8350 could be a good fit for specific server use cases but for general consumer use, which is single and dual core intensive, Intel's two year old i5-2500K delivers better performance. [May '13 CPUPro]

MORE DETAILS

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

Processor Rankings (Price vs Performance) February 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
Intel Core i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $88
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $146
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $79G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback