Xeon E5345 vs i9-11900K
Aggregate performance score
Core i9-11900K outperforms Xeon E5345 by a whopping 1237% 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 | 568 | 2642 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 16.48 | 0.02 |
| Market segment | Desktop processor | Server |
| Power efficiency | 12.15 | 1.42 |
| Designer | Intel | Intel |
| Manufacturer | Intel | no data |
| Architecture codename | Rocket Lake (2021) | Clovertown (2006−2007) |
| Release date | 16 March 2021 (4 years ago) | 14 November 2006 (19 years ago) |
| Launch price (MSRP) | $539 | $851 |
Cost-effectiveness evaluation
Performance per price, higher is better.
i9-11900K has 82300% better value for money than Xeon E5345.
Performance to price scatter graph
Detailed specifications
Core i9-11900K and Xeon E5345 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) | 4 (Quad-Core) |
| Threads | 16 | 4 |
| Base clock speed | 3.5 GHz | 2.33 GHz |
| Boost clock speed | 5.2 GHz | 0.33 GHz |
| Bus rate | 8 GT/s | no data |
| L1 cache | 80 KB (per core) | 64 KB (per core) |
| L2 cache | 512 KB (per core) | 4 MB (per die) |
| L3 cache | 16 MB (shared) | 8 MB L2 Cache |
| Chip lithography | 14 nm | 65 nm |
| Die size | 276 mm2 | 2x 143 mm2 |
| Maximum core temperature | 100 °C | no data |
| Maximum case temperature (TCase) | 72 °C | 66 °C |
| Number of transistors | no data | 582 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
| VID voltage range | no data | 1V-1.5V |
Compatibility
Information on Core i9-11900K and Xeon E5345 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 | 2 |
| Socket | FCLGA1200 | LGA771,PLGA771 |
| Power consumption (TDP) | 125 Watt | 80 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-11900K and Xeon E5345. 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 | no data |
| AES-NI | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| TSX | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| SIPP | + | - |
| Demand Based Switching | no data | + |
| PAE | no data | 32 Bit |
| Turbo Boost Max 3.0 | + | no data |
| FSB parity | no data | + |
| Deep Learning Boost | + | - |
Security technologies
Core i9-11900K and Xeon E5345 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Identity Protection | + | - |
| SGX | - | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-11900K and Xeon E5345 are enumerated here.
| VT-d | + | no data |
| VT-x | + | + |
| EPT | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-11900K and Xeon E5345. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR2, DDR3 Depends on motherboard |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 50 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel UHD Graphics 750 | N/A |
| Max video memory | 64 GB | no data |
| Quick Sync Video | + | - |
| Clear Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.3 GHz | no data |
| Execution Units | 32 | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i9-11900K and Xeon E5345 integrated GPUs.
| Number of displays supported | 3 | no data |
Graphics image quality
Maximum display resolutions supported by Core i9-11900K and Xeon E5345 integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | + | no data |
| Max resolution over HDMI 1.4 | 4096x2160@60Hz | no data |
| Max resolution over eDP | 5120 x 3200 @60Hz | no data |
| Max resolution over DisplayPort | 5120 x 3200 @60Hz | no data |
Graphics API support
APIs supported by Core i9-11900K and Xeon E5345 integrated GPUs, sometimes API versions are included.
| DirectX | 12.1 | no data |
| OpenGL | 4.5 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i9-11900K and Xeon E5345.
| PCIe version | 4.0 | no data |
| PCI Express lanes | 20 | no data |
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.
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 | 14.17 | 1.06 |
| Recency | 16 March 2021 | 14 November 2006 |
| Physical cores | 8 | 4 |
| Threads | 16 | 4 |
| Chip lithography | 14 nm | 65 nm |
| Power consumption (TDP) | 125 Watt | 80 Watt |
i9-11900K has a 1236.8% higher aggregate performance score, an age advantage of 14 years, 100% more physical cores and 300% more threads, and a 364.3% more advanced lithography process.
Xeon E5345, on the other hand, has 56.3% lower power consumption.
The Intel Core i9-11900K is our recommended choice as it beats the Intel Xeon E5345 in performance tests.
Note that Core i9-11900K is a desktop processor while Xeon E5345 is a server/workstation one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
