Xeon E7-8870 vs i5-6600K
Primary details
Comparing Core i5-6600K and Xeon E7-8870 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1412 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.77 | no data |
| Market segment | Desktop processor | Server |
| Series | Intel Core i5 (Desktop) | Intel Xeon E7 |
| Power efficiency | 4.14 | no data |
| Architecture codename | Skylake (2015−2016) | Westmere-EX (2011) |
| Release date | 5 August 2015 (9 years ago) | 5 April 2011 (13 years ago) |
| Launch price (MSRP) | $242 | $4,616 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i5-6600K and Xeon E7-8870 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) | 10 (Deca-Core) |
| Threads | 4 | 20 |
| Base clock speed | 3.5 GHz | 2.4 GHz |
| Boost clock speed | 3.9 GHz | 2.8 GHz |
| Bus type | DMI 3.0 | QPI |
| Bus rate | 4 × 8 GT/s | 6.4 GT/s |
| Multiplier | 35 | 18 |
| L1 cache | 64 KB (per core) | 640 KB |
| L2 cache | 256 KB (per core) | 2.5 MB |
| L3 cache | 6 MB (shared) | 30 MB (shared) |
| Chip lithography | 14 nm | 32 nm |
| Die size | 122 mm2 | 513 mm2 |
| Maximum core temperature | no data | 69 °C |
| Maximum case temperature (TCase) | 64 °C | no data |
| Number of transistors | no data | 2600 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i5-6600K and Xeon E7-8870 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 (Uniprocessor) | 8 (Multiprocessor) |
| Socket | FCLGA1151 | FCLGA1567,LGA1567 |
| Power consumption (TDP) | 91 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-6600K and Xeon E7-8870. 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 |
| AES-NI | + | + |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | 1.0 |
| Hyper-Threading Technology | - | + |
| TSX | + | - |
| Idle States | + | no data |
| Thermal Monitoring | + | + |
Security technologies
Core i5-6600K and Xeon E7-8870 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
| Secure Key | + | no data |
| MPX | + | - |
| Identity Protection | + | - |
| SGX | Yes with Intel® ME | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-6600K and Xeon E7-8870 are enumerated here.
| AMD-V | + | - |
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-6600K and Xeon E7-8870. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3, DDR4 | DDR3 |
| Maximum memory size | 64 GB | 4 TB |
| Max memory channels | 2 | 4 |
| Maximum memory bandwidth | 34.134 GB/s | 34.113 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 530 | no data |
| Max video memory | 64 GB | no data |
| Quick Sync Video | + | - |
| Clear Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.15 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i5-6600K and Xeon E7-8870 integrated GPUs.
| Number of displays supported | 3 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| DVI | + | no data |
Graphics image quality
Maximum display resolutions supported by Core i5-6600K and Xeon E7-8870 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 i5-6600K and Xeon E7-8870 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 i5-6600K and Xeon E7-8870.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 16 | no data |
Pros & cons summary
| Recency | 5 August 2015 | 5 April 2011 |
| Physical cores | 4 | 10 |
| Threads | 4 | 20 |
| Chip lithography | 14 nm | 32 nm |
| Power consumption (TDP) | 91 Watt | 130 Watt |
i5-6600K has an age advantage of 4 years, a 128.6% more advanced lithography process, and 42.9% lower power consumption.
Xeon E7-8870, on the other hand, has 150% more physical cores and 400% more threads.
We couldn't decide between Core i5-6600K and Xeon E7-8870. We've got no test results to judge.
Note that Core i5-6600K is a desktop processor while Xeon E7-8870 is a server/workstation one.
Should you still have questions on choice between Core i5-6600K and Xeon E7-8870, ask them in Comments section, and we shall answer.
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