IntelBX80623I52400
IntelBX80684I58400

4 Cores, 4 Threads
@3.1GHz Sandy Bridge (2011)

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

Real World Speed
Performance profile from 41,355 user samples
32,279 User Benchmarks
Best Bench: 65% Base clock 3.1 GHz, turbo 3.6 GHz (avg)
Worst Bench: 50% Base clock 3.1 GHz, turbo 0.6 GHz (avg)
Poor: 50% Great: 65%
SPEED RANK: 205th / 1083
Gaming
Gaming 61%
Destroyer
Desktop
Desktop 60%
Gunboat
Workstation
Workstation 37%
Jet ski
9,076 User Benchmarks
Best Bench: 96% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 84% Base clock 2.8 GHz, turbo 2.8 GHz (avg)
Poor: 84% Great: 96%
SPEED RANK: 28th / 1083
Gaming
Gaming 92%
Nuclear submarine
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 68%
Battle cruiser
Effective Speed
Effective CPU Speed
60.6 % 92.1 % Much faster effective speed.
+52%
SC Mixed
Avg. Single Core Mixed Speed
84.6 Pts 120 Pts Much faster single-core speed.
+42%
QC Mixed
Avg. Quad Core Mixed Speed
312 Pts 468 Pts Much faster quad-core speed.
+50%
MC Mixed
Avg. Multi Core Mixed Speed
321 Pts 688 Pts Hugely faster multi-core speed.
+114%
SC Mixed
OC Single Core Mixed Speed
89.2 Pts 125 Pts Much faster OC single-core speed.
+40%
QC Mixed
OC Quad Core Mixed Speed
340 Pts 488 Pts Much faster OC quad-core speed.
+44%
MC Mixed
OC Multi Core Mixed Speed
341 Pts 724 Pts Hugely faster OC multi-core speed.
+112%
Market Share
Based on 8,375,349 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.82 % 0.85 % +4%
Value
Value For Money
93.9 % 111 % Better value.
+18%
User Rating
UBM User Rating
70 % 109 % Much more popular.
+56%
Price
Price (score)
$91 Much cheaper.
+49%
$179
Age
Newest
87 Months 6 Months Hugely more recent.
+93%
TDP
Thermal Design Power (TDP)
95 Watts 65 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
4 threads 6 threads Much higher thread count.
+50%
Lithography
Manufacturing process
32 nm 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
3.1 GHz Slightly faster base frequency.
+11%
2.8 GHz
Turbo Clock
Turbo Clock Speed
3.4 GHz 4 GHz Faster turbo frequency.
+18%
SC Int
Single Core Integer Speed
88.9 Pts 122 Pts Much faster single-core int speed.
+37%
SC Float
Single Core Floating Point Speed
89.3 Pts 129 Pts Much faster single-core fp speed.
+44%
QC Int
Quad Core Integer Speed
340 Pts 476 Pts Much faster quad-core int speed.
+40%
QC Float
Quad Core Floating Point Speed
343 Pts 505 Pts Much faster quad-core fp speed.
+47%
MC Int
Multi Core Integer Speed
340 Pts 706 Pts Hugely faster multi-core int speed.
+108%
MC Float
Multi Core Floating Point Speed
342 Pts 750 Pts Hugely faster multi-core fp speed.
+119%
Series
CPU Architecture
Sandy Bridge (2011) Coffee Lake (2017)
Socket
Motherboard Socket
LGA1155 FCLGA1151
Graphics
Integrated Graphics
HD 2000 UHD 630
Launch Date
Launch Date
Q1'11 Q4'17
Cache
Cache
6 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX2
Embedded Options Available
Embedded Options Available
Yes No
Lithography
Lithography
32 nm 14 nm
Recommended Price
Recommended Customer Price
$178.00 N/A
Bus Speed
Bus Speed
5 GT/s DMI 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 1066/1333 DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 2000 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
850 MHz 350 MHz
# of Displays Supported
# of Displays Supported ‡
2 3
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.1 GHz 1.05 GHz
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Revision
PCI Express Revision
2.0 3.0

More specs » More specs »
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Pros: Brilliant value for money. Cons: It's not the 2400k which can be had for just a tiny bit more and offers a lot more flexibility in terms of overclocking. [Apr '12 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) April 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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  • - 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.
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