i9-9900 vs Xeon 678X
Aggregate performance score
Xeon 678X outperforms Core i9-9900 by a whopping 467% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 47 | 984 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 13.15 | 6.12 |
| Market segment | Server | Desktop processor |
| Series | no data | Intel Core i9 |
| Power efficiency | 7.40 | 6.02 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Granite Rapids (2024−2026) | Coffee Lake-R (2018−2019) |
| Release date | 2 February 2026 (recently) | 23 April 2019 (6 years ago) |
| Launch price (MSRP) | $3,749 | $439 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon 678X has 115% better value for money than i9-9900.
Performance to price scatter graph
Detailed specifications
Xeon 678X and Core i9-9900 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 | 48 (Octatetraconta-Core) | 8 (Octa-Core) |
| Performance-cores | 48 | no data |
| Threads | 96 | 16 |
| Base clock speed | 2.4 GHz | 3.1 GHz |
| Boost clock speed | 4.9 GHz | 5 GHz |
| Bus type | no data | DMI 3.0 |
| Bus rate | 0 GT/s | 4 × 8 GT/s |
| L1 cache | 112 KB (per core) | 64K (per core) |
| L2 cache | 2 MB (per core) | 256K (per core) |
| L3 cache | 192 MB (shared) | 16 MB (shared) |
| Chip lithography | Intel 3 nm | 14 nm |
| Die size | 2x 598 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 82 °C | 72 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Xeon 678X and Core i9-9900 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 (Uniprocessor) |
| Socket | FCLGA4710 | FCLGA1151 |
| Power consumption (TDP) | 300 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon 678X and Core i9-9900. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® AMX, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| 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 | - | + |
| Turbo Boost Max 3.0 | + | no data |
| Deep Learning Boost | + | - |
Security technologies
Xeon 678X and Core i9-9900 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| MPX | - | + |
| Identity Protection | - | + |
| SGX | - | Yes with Intel® ME |
| OS Guard | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon 678X and Core i9-9900 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon 678X and Core i9-9900. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5(6400MT/s)MRDIMM(8000MT/s) | DDR4-2666 |
| Maximum memory size | 4 TB | 128 GB |
| Max memory channels | 8 | 2 |
| Maximum memory bandwidth | no data | 42.671 GB/s |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | Intel UHD Graphics 630 |
| Max video memory | no data | 64 GB |
| Quick Sync Video | - | + |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 1.2 GHz |
| InTru 3D | no data | + |
Graphics interfaces
Available interfaces and connections of Xeon 678X and Core i9-9900 integrated GPUs.
| Number of displays supported | no data | 3 |
Graphics image quality
Maximum display resolutions supported by Xeon 678X and Core i9-9900 integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | no data | 4096 x 2304@24Hz |
| Max resolution over eDP | no data | 4096 x 2304@60Hz |
| Max resolution over DisplayPort | no data | 4096 x 2304@60Hz |
Graphics API support
APIs supported by Xeon 678X and Core i9-9900 integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Xeon 678X and Core i9-9900.
| PCIe version | 5.0 | 3.0 |
| PCI Express lanes | 128 | 16 |
Synthetic benchmarks
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.
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. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 52.59 | 9.27 |
| Recency | 2 February 2026 | 23 April 2019 |
| Physical cores | 48 | 8 |
| Threads | 96 | 16 |
| Power consumption (TDP) | 300 Watt | 65 Watt |
Xeon 678X has a 467.3% higher aggregate performance score, an age advantage of 6 years, and 500% more physical cores and 500% more threads.
i9-9900, on the other hand, has 361.5% lower power consumption.
The Intel Xeon 678X is our recommended choice as it beats the Intel Core i9-9900 in performance tests.
Be aware that Xeon 678X is a server/workstation processor while Core i9-9900 is a desktop one.
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