IntelBX80619I73930K
IntelBX80684I58400

6 Cores, 12 Threads @3.2GHz, Sandy Bridge-E.
Release date: Q4 2011.

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

Real World Speed
Performance profile from 109,046 user samples
17,950 User Benchmarks
Best Bench: 93% Base clock 3.2 GHz, turbo 3.8 GHz (avg)
Worst Bench: 63% Base clock 3.2 GHz, turbo 1.65 GHz (avg)
Poor: 63% Great: 93%
SPEED RANK: 101st / 1158
Gaming
Gaming 76%
Battleship
Desktop
Desktop 74%
Battleship
Workstation
Workstation 65%
Battle cruiser
91,096 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 79% Base clock 2 GHz, turbo 2 GHz (avg)
Poor: 79% Great: 94%
SPEED RANK: 53rd / 1158
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 64%
Destroyer
Effective Speed
Effective CPU Speed
76.3 % 88.9 % Faster effective speed.
+16%
SC Mixed
Avg. Single Core Mixed Speed
97.2 Pts 117 Pts Faster single-core speed.
+20%
QC Mixed
Avg. Quad Core Mixed Speed
374 Pts 450 Pts Faster quad-core speed.
+20%
MC Mixed
Avg. Multi Core Mixed Speed
731 Pts Slightly faster multi-core speed.
+12%
652 Pts
SC Mixed
OC Single Core Mixed Speed
116 Pts 123 Pts Slightly faster OC single-core speed.
+6%
QC Mixed
OC Quad Core Mixed Speed
464 Pts 476 Pts +3%
MC Mixed
OC Multi Core Mixed Speed
887 Pts Faster OC multi-core speed.
+27%
699 Pts
Market Share
Based on 17,144,058 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.14 % 1.27 % Hugely higher market share.
+807%
Value
Value For Money
62.6 % 104 % Much better value.
+66%
User Rating
UBM User Rating
63 % 117 % Hugely more popular.
+86%
Price
Price (score)
$495 $192 Much cheaper.
+61%
Age
Newest
90 Months 19 Months Much more recent.
+79%
TDP
Thermal Design Power (TDP)
130 Watts 65 Watts Much more energy efficient.
+50%
Cores
CPU Processing Cores
6 cores 6 cores
Threads
CPU Processing Threads
12 threads Hugely higher thread count.
+100%
6 threads
Lithography
Manufacturing process
32 nm 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
3.2 GHz Slightly faster base frequency.
+14%
2.8 GHz
Turbo Clock
Turbo Clock Speed
3.8 GHz 4 GHz Slightly faster turbo frequency.
+5%
SC Int
Single Core Integer Speed
115 Pts 118 Pts +3%
SC Float
Single Core Floating Point Speed
116 Pts 128 Pts Slightly faster single-core fp speed.
+10%
QC Int
Quad Core Integer Speed
461 Pts +0% 460 Pts
QC Float
Quad Core Floating Point Speed
463 Pts 499 Pts Slightly faster quad-core fp speed.
+8%
MC Int
Multi Core Integer Speed
854 Pts Faster multi-core int speed.
+28%
668 Pts
MC Float
Multi Core Floating Point Speed
882 Pts Faster multi-core fp speed.
+20%
738 Pts
Series
CPU Architecture
Sandy Bridge-E Coffee Lake
Socket
Motherboard Socket
FCLGA2011 FCLGA1151
Graphics
Integrated Graphics
None UHD 630
Launch Date
Launch Date
Q4'11 Q4'17
Cache
Cache
12 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.2, AVX, AES SSE4.1/4.2, AVX2
Lithography
Lithography
32 nm 14 nm
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Memory Types
Memory Types
DDR3 1066/1333/1600 DDR4-2666
Memory Channels
Max # of Memory Channels
4 2
Package Size
Package Size
52.5mm x 45.0mm 37.5mm x 37.5mm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
PCI Express Revision
PCI Express Revision
2.0 3.0
Max # of PCI Express Lanes
Max # of PCI Express Lanes
40 16

More specs » More specs »
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The 3930K has an outstanding multi-core performance profile, almost as good as you can buy at any budget, which considering its relatively reasonable price tag really make it stand out from the crowd. The reason for the extraordinary multi-core benchmark scores is down to the 3930K's six cores. Having six cores effectively results in a 50% lead over quad core cpus and a 200% percent lead over dual core cpu's. Typical desktop users rarely use more than two cores simultaneously thus rendering the additional four cores largely redundant for consumer use. In terms of regular use this CPU will offer virtually no better real world performance than the leaders in my Desktop CPU Group Test. For server orientated workloads the 3930K offers both outstanding performance and superb value for money. [Jun '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) May 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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