Intel
IntelBX80684I58400

2 Cores, 4 Threads @3.1 GHz, Sandy Bridge.
Release date ≤ Q4 2013.

6 Cores, 6 Threads @2.8GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 116,521 user samples
28,541 User Benchmarks
Best Bench: 46% Base clock 3.1 GHz, turbo 3.1 GHz (avg)
Worst Bench: 29% Base clock 3.1 GHz, turbo 3.1 GHz (avg)
Poor: 29% Great: 46%
SPEED RANK: 494th / 1159
Gaming
Gaming 41%
Speed boat
Desktop
Desktop 47%
Yacht
Workstation
Workstation 24%
Surfboard
87,980 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 81% Base clock 2.8 GHz, turbo 1.2 GHz (avg)
Poor: 81% Great: 94%
SPEED RANK: 54th / 1159
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 64%
Destroyer
Effective Speed
Effective CPU Speed
41.3 % 88.9 % Hugely faster effective speed.
+115%
SC Mixed
Avg. Single Core Mixed Speed
74 Pts 117 Pts Much faster single-core speed.
+58%
QC Mixed
Avg. Quad Core Mixed Speed
187 Pts 451 Pts Hugely faster quad-core speed.
+141%
MC Mixed
Avg. Multi Core Mixed Speed
192 Pts 650 Pts Hugely faster multi-core speed.
+239%
SC Mixed
OC Single Core Mixed Speed
81.7 Pts 122 Pts Much faster OC single-core speed.
+49%
QC Mixed
OC Quad Core Mixed Speed
209 Pts 478 Pts Hugely faster OC quad-core speed.
+129%
MC Mixed
OC Multi Core Mixed Speed
211 Pts 700 Pts Hugely faster OC multi-core speed.
+232%
Market Share
Based on 17,685,361 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.24 % 1.38 % Hugely higher market share.
+475%
Value
Value For Money
56 % 103 % Hugely better value.
+84%
User Rating
UBM User Rating
61 % 115 % Hugely more popular.
+89%
Price
Price (score)
$130 Much cheaper.
+34%
$196
Age
Newest
66+ Months 20 Months Much more recent.
+70%
SC Int
Single Core Integer Speed
81.3 Pts 118 Pts Much faster single-core int speed.
+45%
SC Float
Single Core Floating Point Speed
82 Pts 128 Pts Much faster single-core fp speed.
+56%
QC Int
Quad Core Integer Speed
202 Pts 460 Pts Hugely faster quad-core int speed.
+128%
QC Float
Quad Core Floating Point Speed
209 Pts 500 Pts Hugely faster quad-core fp speed.
+139%
MC Int
Multi Core Integer Speed
203 Pts 666 Pts Hugely faster multi-core int speed.
+228%
MC Float
Multi Core Floating Point Speed
210 Pts 738 Pts Hugely faster multi-core fp speed.
+251%
Launch Date
Launch Date
Q1'11 Q4'17
Cache
Cache
3 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX2
Lithography
Lithography
32 nm 14 nm
Recommended Price
Recommended Customer Price
$120.00 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
Turbo Boost Tech
Intel® Turbo Boost Technology
No 2.0
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
No Yes
AES New Instructions
Intel® AES New Instructions
No Yes
PCI Express Revision
PCI Express Revision
2.0 3.0

More specs » More specs »
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does jack [Jun '19 Liommm]

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) June 2019 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.
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