IntelBX80633I74930K
IntelBX80684I58400

6 Cores, 12 Threads @3.4GHz, Ivy Bridge-E.
Release date: Q3 2013.

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

Real World Speed
Performance profile from 76,464 user samples
9,090 User Benchmarks
Best Bench: 98% Base clock 3.4 GHz, turbo 4.7 GHz (avg)
Worst Bench: 69% Base clock 3.4 GHz, turbo 1.2 GHz (avg)
Poor: 69% Great: 98%
SPEED RANK: 70th / 1146
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 78%
Battleship
Workstation
Workstation 71%
Battleship
67,374 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 80% Base clock 2.8 GHz, turbo 1.5 GHz (avg)
Poor: 80% Great: 94%
SPEED RANK: 45th / 1146
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed
81.3 % 89.1 % Slightly faster effective speed.
+10%
SC Mixed
Avg. Single Core Mixed Speed
102 Pts 117 Pts Slightly faster single-core speed.
+15%
QC Mixed
Avg. Quad Core Mixed Speed
399 Pts 451 Pts Slightly faster quad-core speed.
+13%
MC Mixed
Avg. Multi Core Mixed Speed
798 Pts Faster multi-core speed.
+22%
654 Pts
SC Mixed
OC Single Core Mixed Speed
123 Pts +1% 122 Pts
QC Mixed
OC Quad Core Mixed Speed
486 Pts +2% 477 Pts
MC Mixed
OC Multi Core Mixed Speed
952 Pts Much faster OC multi-core speed.
+36%
698 Pts
Market Share
Based on 14,838,267 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.07 % 1.49 % Insanely higher market share.
+2,029%
Value
Value For Money
62 % 106 % Much better value.
+70%
User Rating
UBM User Rating
60 % 111 % Hugely more popular.
+85%
Price
Price (score)
$600 $185 Much cheaper.
+69%
Age
Newest
65 Months 16 Months Much more recent.
+75%
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
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
3.4 GHz Faster base frequency.
+21%
2.8 GHz
Turbo Clock
Turbo Clock Speed
3.9 GHz 4 GHz +3%
SC Int
Single Core Integer Speed
122 Pts +3% 118 Pts
SC Float
Single Core Floating Point Speed
124 Pts 128 Pts +3%
QC Int
Quad Core Integer Speed
479 Pts +4% 460 Pts
QC Float
Quad Core Floating Point Speed
490 Pts 499 Pts +2%
MC Int
Multi Core Integer Speed
937 Pts Much faster multi-core int speed.
+40%
668 Pts
MC Float
Multi Core Floating Point Speed
935 Pts Faster multi-core fp speed.
+27%
739 Pts
Series
CPU Architecture
Ivy Bridge-E Coffee Lake
Socket
Motherboard Socket
FCLGA2011 FCLGA1151
Graphics
Integrated Graphics
None UHD 630
Launch Date
Launch Date
Q3'13 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
22 nm 14 nm
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Memory Types
Memory Types
DDR3 1333/1600/1866 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
Max # of PCI Express Lanes
Max # of PCI Express Lanes
40 16

More specs » More specs »
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The Intel i7-4930K has six cores rather the standard four. The additional two cores improve multi-core throughput by 50% but leave single and dual-core speeds unchanged. Comparing the 4930K to the 3930K, its predecessor, shows that little has changed in terms of performance. At peak performance when both processors are overclocked the 4930K leads by around 7%. As well superb multi-core performance, both processors also have very strong single and dual core performance. The main downside to the 4930K is the fact that it still runs on the same FCLGA2011 platform as its predecessor, as a result purchasing it would effectively mean buying into a technology that is over three years old. In most cases, it would probably make sense to wait for a Haswell based hexacore. [Mar '14 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 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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CPUGPUSSD
Intel Core i7-8700K $360Nvidia GTX 1070 $325Samsung 850 Evo 250GB $78
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Intel Core i5-8600K $259Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
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WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $120SanDisk Ultra Fit 32GB $12
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