Xeon Silver 4309Y vs i9-9900K
Aggregate performance score
Xeon Silver 4309Y outperforms Core i9-9900K by a small 5% based on our aggregate benchmark results.
Primary details
Comparing Core i9-9900K and Xeon Silver 4309Y processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 686 | 642 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 7.88 | no data |
| Market segment | Desktop processor | Server |
| Series | Core i9 (Desktop) | no data |
| Power efficiency | 11.45 | 10.91 |
| Architecture codename | Coffee Lake-R (2018−2019) | Ice Lake-SP (2021) |
| Release date | 8 October 2018 (6 years ago) | 6 April 2021 (3 years ago) |
| Launch price (MSRP) | $488 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i9-9900K and Xeon Silver 4309Y 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 | 8 (Octa-Core) | 8 (Octa-Core) |
| Threads | 16 | 16 |
| Base clock speed | 3.6 GHz | 2.8 GHz |
| Boost clock speed | 5 GHz | 3.6 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| L1 cache | 512 KB | 64K (per core) |
| L2 cache | 2 MB | 1 MB (per core) |
| L3 cache | 16 MB (shared) | 12 MB (shared) |
| Chip lithography | 14 nm | 10 nm |
| Die size | 178 mm2 | no data |
| Maximum core temperature | 100 °C | no data |
| Maximum case temperature (TCase) | 72 °C | 76 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i9-9900K and Xeon Silver 4309Y 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) | 2 |
| Socket | LGA-1151 | FCLGA4189 |
| Power consumption (TDP) | 95 Watt | 105 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-9900K and Xeon Silver 4309Y. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | + | + |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| SIPP | + | - |
| Deep Learning Boost | - | + |
Security technologies
Core i9-9900K and Xeon Silver 4309Y 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 i9-9900K and Xeon Silver 4309Y are enumerated here.
| AMD-V | + | - |
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-9900K and Xeon Silver 4309Y. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR4-2667 |
| Maximum memory size | 128 GB | 6 TB |
| Max memory channels | 2 | 8 |
| Maximum memory bandwidth | 44.668 GB/s | no data |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel UHD Graphics 630 | no data |
| Max video memory | 64 GB | no data |
| Quick Sync Video | + | - |
| Clear Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.2 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i9-9900K and Xeon Silver 4309Y integrated GPUs.
| Number of displays supported | 3 | no data |
Graphics image quality
Maximum display resolutions supported by Core i9-9900K and Xeon Silver 4309Y 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 i9-9900K and Xeon Silver 4309Y 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 i9-9900K and Xeon Silver 4309Y.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 16 | 64 |
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.
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.
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.
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.
Pros & cons summary
| Performance score | 11.49 | 12.11 |
| Recency | 8 October 2018 | 6 April 2021 |
| Chip lithography | 14 nm | 10 nm |
| Power consumption (TDP) | 95 Watt | 105 Watt |
i9-9900K has 10.5% lower power consumption.
Xeon Silver 4309Y, on the other hand, has a 5.4% higher aggregate performance score, an age advantage of 2 years, and a 40% more advanced lithography process.
Given the minimal performance differences, no clear winner can be declared between Core i9-9900K and Xeon Silver 4309Y.
Note that Core i9-9900K is a desktop processor while Xeon Silver 4309Y is a server/workstation one.
Should you still have questions on choice between Core i9-9900K and Xeon Silver 4309Y, ask them in Comments section, and we shall answer.
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