Ultra X9 388H vs Ultra 9 285K
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 96 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 78.76 | no data |
| Market segment | Desktop processor | Laptop |
| Power efficiency | 13.01 | no data |
| Designer | Intel | Intel |
| Manufacturer | TSMC | no data |
| Architecture codename | Arrow Lake-S (2024−2025) | Panther Lake |
| Release date | 24 October 2024 (1 year ago) | no data |
| Launch price (MSRP) | $589 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Core Ultra 9 285K and Core Ultra X9 388H 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 | 24 (Tetracosa-Core) | 16 (Hexadeca-Core) |
| Performance-cores | 8 | 4 |
| Efficient-cores | 16 | 8 |
| Low Power Efficient-cores | no data | 4 |
| Threads | 24 | 16 |
| Base clock speed | 3.7 GHz | no data |
| Boost clock speed | 5.6 GHz | 5.1 GHz |
| Bus rate | 250 MHz | no data |
| L1 cache | 192 KB (per core) | no data |
| L2 cache | 3 MB (per core) | no data |
| L3 cache | 36 MB (shared) | 18 MB Intel® Smart Cache |
| Chip lithography | 3 nm | no data |
| Die size | 243 mm2 | no data |
| Number of transistors | 17,800 million | no data |
| 64 bit support | + | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Core Ultra 9 285K and Core Ultra X9 388H 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 | no data |
| Socket | FCLGA1851 | FCBGA2540 |
| Power consumption (TDP) | 125 Watt | 25 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 9 285K and Core Ultra X9 388H. 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® AVX2 |
| AES-NI | + | + |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | + | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | - | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | + |
| SIPP | + | + |
| Turbo Boost Max 3.0 | + | + |
| Deep Learning Boost | + | + |
| Supported AI Software Frameworks | OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN | OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN |
Security technologies
Core Ultra 9 285K and Core Ultra X9 388H technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| OS Guard | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 9 285K and Core Ultra X9 388H are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core Ultra 9 285K and Core Ultra X9 388H. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-6400 | LPDDR5X-9600 |
| Maximum memory size | 256 GB | 96 GB |
| Max memory channels | 2 | 2 |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® Graphics | Intel® Arc™ B390 GPU |
| Quick Sync Video | + | + |
| Graphics max frequency | 2 GHz | 2.5 GHz |
Graphics interfaces
Available interfaces and connections of Core Ultra 9 285K and Core Ultra X9 388H integrated GPUs.
| Number of displays supported | 4 | 4 |
Graphics image quality
Maximum display resolutions supported by Core Ultra 9 285K and Core Ultra X9 388H integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 4096 x 2304 @ 60Hz (HDMI 2.1 TMDS)7680 x 4320 @ 60Hz (HDMI 2.1 FRL) | no data |
| Max resolution over eDP | 3840 x 2400 @ 120Hz | 3840 x 2400 @ 120Hz |
| Max resolution over DisplayPort | 7680 x 4320 @ 60Hz | 7680 x 4320 @ 60Hz |
Graphics API support
APIs supported by Core Ultra 9 285K and Core Ultra X9 388H integrated GPUs, sometimes API versions are included.
| DirectX | 12 | DirectX 12 Ultimate |
| OpenGL | 4.5 | 4.6 |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 9 285K and Core Ultra X9 388H.
| PCIe version | 5.0 and 4.0 | 5.0 and 4.0 |
| PCI Express lanes | 24 | 12 |
Pros & cons summary
| Physical cores | 24 | 16 |
| Threads | 24 | 16 |
| Power consumption (TDP) | 125 Watt | 25 Watt |
Ultra 9 285K has 50% more physical cores and 50% more threads.
Ultra X9 388H, on the other hand, has 400% lower power consumption.
We couldn't decide between Intel Core Ultra 9 285K and Intel Core Ultra X9 388H. We've got no test results to judge.
Note that Core Ultra 9 285K is a desktop processor while Core Ultra X9 388H is a notebook one.
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