Core i5-2400 vs Core i7-6700K
Aggregated performance score
Core i7-6700K outperforms Core i5-2400 by 131% based on our aggregated benchmark results.
Primary Details
Comparing Core i7-6700K and Core i5-2400 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1039 | 1640 |
| Place by popularity | not in top-100 | 33 |
| Cost-Effectiveness Evaluation | 2.79 | 0.86 |
| Market segment | Desktop processor | Desktop processor |
| Series | Intel Core i7 (Desktop) | Core i5 (Desktop) |
| Architecture codename | Skylake (2015−2016) | Sandy Bridge (2011−2013) |
| Release date | 1 August 2015 (8 years ago) | 9 January 2011 (13 years ago) |
| Launch price (MSRP) | $339 | $60 |
| Current price | $160 (0.5x MSRP) | $57 (1x MSRP) |
Cost-Effectiveness Evaluation
Performance per price, higher is better.
i7-6700K has 224% better value for money than i5-2400.
Detailed Specifications
Core i7-6700K and Core i5-2400 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 8 | 4 |
| Base clock speed | 4 GHz | 3.1 GHz |
| Boost clock speed | 4.2 GHz | 3.4 GHz |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 256K (per core) | 256 KB (per core) |
| L3 cache | 8 MB (shared) | 6144 KB (shared) |
| Chip lithography | 14 nm | 32 nm |
| Die size | 122 mm2 | 216 mm2 |
| Maximum core temperature | 64 °C | 73 °C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | 1750 Million | 1,160 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | Yes | No |
Compatibility
Information on Core i7-6700K and Core i5-2400 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | FCLGA1151 | LGA1155 |
| Power consumption (TDP) | 91 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-6700K and Core i5-2400. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | - |
| TSX | + | no data |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| SIPP | - | no data |
| FDI | no data | + |
| Fast Memory Access | no data | + |
| Status | Discontinued | Discontinued |
Security technologies
Core i7-6700K and Core i5-2400 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
| Secure Key | + | no data |
| MPX | + | no data |
| Identity Protection | + | + |
| SGX | Yes with Intel® ME | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-6700K and Core i5-2400 are enumerated here.
| AMD-V | + | no data |
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-6700K and Core i5-2400. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3, DDR4 | DDR3 |
| Maximum memory size | 64 GB | 32 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 34.1 GB/s | 21 GB/s |
| ECC memory support | - | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel HD Graphics 530 | Intel HD Graphics 2000 |
| Max video memory | 64 GB | no data |
| Quick Sync Video | + | + |
| Clear Video | + | no data |
| Clear Video HD | + | + |
| Graphics max frequency | 1.15 GHz | 1.1 GHz |
| InTru 3D | + | + |
Graphics interfaces
Available interfaces and connections of Core i7-6700K and Core i5-2400 integrated GPUs.
| Number of displays supported | 3 | 2 |
| eDP | + | no data |
| DisplayPort | + | no data |
| HDMI | + | no data |
| DVI | + | no data |
Graphics image quality
Maximum display resolutions supported by Core i7-6700K and Core i5-2400 integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | + | no data |
| Max resolution over HDMI 1.4 | 4096x2304@24Hz | no data |
| Max resolution over eDP | 4096x2304@60Hz | no data |
| Max resolution over DisplayPort | 4096x2304@60Hz | no data |
| Max resolution over VGA | N/A | no data |
Graphics API support
APIs supported by Core i7-6700K and Core i5-2400 integrated GPUs, sometimes API versions are included.
| DirectX | 12 | no data |
| OpenGL | 4.5 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-6700K and Core i5-2400.
| PCIe version | 3.0 | 2.0 |
| PCI Express lanes | 16 | 16 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Core i7-6700K outperforms Core i5-2400 by 131% based on our aggregated benchmark results.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Benchmark coverage: 68%
Core i7-6700K outperforms Core i5-2400 by 131% in Passmark.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
Benchmark coverage: 42%
Core i7-6700K outperforms Core i5-2400 by 168% in GeekBench 5 Single-Core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Benchmark coverage: 42%
Core i7-6700K outperforms Core i5-2400 by 205% in GeekBench 5 Multi-Core.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Benchmark coverage: 20%
Core i7-6700K outperforms Core i5-2400 by 48% in Cinebench 10 32-bit single-core.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
Benchmark coverage: 19%
Core i7-6700K outperforms Core i5-2400 by 68% in Cinebench 10 32-bit multi-core.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Benchmark coverage: 19%
Core i7-6700K outperforms Core i5-2400 by 58% in 3DMark06 CPU.
wPrime 32
wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.
Benchmark coverage: 18%
Core i5-2400 outperforms Core i7-6700K by 76% in wPrime 32.
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.
Benchmark coverage: 17%
Core i7-6700K outperforms Core i5-2400 by 90% in Cinebench 11.5 64-bit multi-core.
TrueCrypt AES
TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.
Benchmark coverage: 13%
Core i7-6700K outperforms Core i5-2400 by 81% in TrueCrypt AES.
WinRAR 4.0
WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.
Benchmark coverage: 13%
Core i7-6700K outperforms Core i5-2400 by 84% in WinRAR 4.0.
x264 encoding pass 1
x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.
Benchmark coverage: 13%
Core i7-6700K outperforms Core i5-2400 by 49% in x264 encoding pass 1.
x264 encoding pass 2
x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.
Benchmark coverage: 13%
Core i7-6700K outperforms Core i5-2400 by 104% in x264 encoding pass 2.
3DMark Fire Strike Physics
Benchmark coverage: 4%
Core i7-6700K outperforms Core i5-2400 by 136% in 3DMark Fire Strike Physics.
Pros & Cons Summary
| Performance score | 5.77 | 2.50 |
| Integrated graphics card | 2.59 | |
| Recency | 1 August 2015 | 9 January 2011 |
| Threads | 8 | 4 |
| Cost | $339 | $60 |
| Chip lithography | 14 nm | 32 nm |
| Power consumption (TDP) | 91 Watt | 95 Watt |
The Core i7-6700K is our recommended choice as it beats the Core i5-2400 in performance tests.
Should you still have questions on choice between Core i7-6700K and Core i5-2400, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
