Xeon D-2899NT vs i7-6660U
Primary details
Comparing Core i7-6660U and Xeon D-2899NT processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1823 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Series | Intel Core i7 | no data |
| Power efficiency | 14.25 | no data |
| Architecture codename | Skylake (2015−2016) | Ice Lake-D (2022−2023) |
| Release date | 20 March 2016 (8 years ago) | 14 December 2023 (1 year ago) |
| Launch price (MSRP) | $415 | $2,138 |
Detailed specifications
Core i7-6660U and Xeon D-2899NT 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 | 2 (Dual-core) | 22 (Docosa-Core) |
| Threads | 4 | 44 |
| Base clock speed | 2.4 GHz | 2.2 GHz |
| Boost clock speed | 3.4 GHz | 3.1 GHz |
| Bus type | OPI | no data |
| Bus rate | 4 GT/s | no data |
| Multiplier | 24 | no data |
| L1 cache | 128 KB | 80 KB (per core) |
| L2 cache | 512 KB | 1.25 MB (per core) |
| L3 cache | 4 MB | 30 MB (shared) |
| Chip lithography | 14 nm | 10 nm |
| Maximum core temperature | 100 °C | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Core i7-6660U and Xeon D-2899NT 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) | 1 |
| Socket | FCBGA1356 | FCBGA2579 |
| Power consumption (TDP) | 15 Watt | 135 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-6660U and Xeon D-2899NT. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | Intel® AVX-512 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| QuickAssist | no data | + |
| eDRAM | 64 MB | no data |
| My WiFi | + | no data |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | + | - |
| Idle States | + | no data |
| Thermal Monitoring | + | + |
| Flex Memory Access | + | no data |
| SIPP | + | - |
| Smart Response | + | no data |
| Deep Learning Boost | - | + |
Security technologies
Core i7-6660U and Xeon D-2899NT 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 | Yes with Intel® SPS |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-6660U and Xeon D-2899NT are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-6660U and Xeon D-2899NT. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2133, LPDDR3-1866, DDR3L-1600 | DDR4 |
| Maximum memory size | 32 GB | 1 TB |
| Max memory channels | 2 | 4 |
| Maximum memory bandwidth | 34.134 GB/s | no data |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel Iris Graphics 540 | N/A |
| Max video memory | 32 GB | no data |
| Quick Sync Video | + | - |
| Clear Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.05 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i7-6660U and Xeon D-2899NT 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 i7-6660U and Xeon D-2899NT 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 |
Graphics API support
APIs supported by Core i7-6660U and Xeon D-2899NT 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 i7-6660U and Xeon D-2899NT.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 12 | 32 |
| USB revision | no data | 3.0 |
| Max number of SATA 6 Gb/s Ports | no data | 24 |
| Number of USB ports | no data | 4 |
| Integrated LAN | no data | + |
Pros & cons summary
| Recency | 20 March 2016 | 14 December 2023 |
| Physical cores | 2 | 22 |
| Threads | 4 | 44 |
| Chip lithography | 14 nm | 10 nm |
| Power consumption (TDP) | 15 Watt | 135 Watt |
i7-6660U has 800% lower power consumption.
Xeon D-2899NT, on the other hand, has an age advantage of 7 years, 1000% more physical cores and 1000% more threads, and a 40% more advanced lithography process.
We couldn't decide between Core i7-6660U and Xeon D-2899NT. We've got no test results to judge.
Be aware that Core i7-6660U is a notebook processor while Xeon D-2899NT is a server/workstation one.
Should you still have questions on choice between Core i7-6660U and Xeon D-2899NT, ask them in Comments section, and we shall answer.
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