Xeon w5-2555X vs Core 2 Duo P8400
Aggregate performance score
Xeon w5-2555X outperforms Core 2 Duo P8400 by a whopping 5443% 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 | 3092 | 210 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.02 | no data |
| Market segment | Laptop | Server |
| Series | Intel Core 2 Duo | no data |
| Power efficiency | 0.83 | 4.54 |
| Designer | Intel | Intel |
| Architecture codename | Penryn (2008−2011) | no data |
| Release date | 15 July 2008 (17 years ago) | 1 July 2024 (1 year ago) |
| Launch price (MSRP) | $209 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Core 2 Duo P8400 and Xeon w5-2555X 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) | 14 (Tetradeca-Core) |
| Performance-cores | no data | 14 |
| Threads | 2 | 28 |
| Base clock speed | 2.26 GHz | 3.3 GHz |
| Boost clock speed | 2.26 GHz | 4.8 GHz |
| Bus rate | 1066 MHz | no data |
| L1 cache | 128 KB | no data |
| L2 cache | 3 MB | no data |
| L3 cache | 3 MB L2 Cache | 33.75 MB Intel® Smart Cache |
| Chip lithography | 45 nm | Intel 7 nm |
| Die size | 107 mm2 | no data |
| Maximum core temperature | 105 °C | 75 °C |
| Number of transistors | 410 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
| VID voltage range | 1.05V-1.15V | no data |
Compatibility
Information on Core 2 Duo P8400 and Xeon w5-2555X 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 | no data | 1 |
| Socket | BGA479,PBGA479,PGA478 | FCLGA4677 |
| Power consumption (TDP) | 25 Watt | 252 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo P8400 and Xeon w5-2555X. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® AMX, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 |
| AES-NI | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | - | 2.0 |
| Hyper-Threading Technology | - | + |
| TSX | - | + |
| Idle States | + | no data |
| Demand Based Switching | - | no data |
| Turbo Boost Max 3.0 | no data | + |
| FSB parity | - | no data |
| Deep Learning Boost | - | + |
Security technologies
Core 2 Duo P8400 and Xeon w5-2555X technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Duo P8400 and Xeon w5-2555X are enumerated here.
| VT-d | no data | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Duo P8400 and Xeon w5-2555X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR5-4800 |
| Maximum memory size | no data | 2 TB |
| Max memory channels | no data | 4 |
| ECC memory support | - | + |
Peripherals
Specifications and connection of peripherals supported by Core 2 Duo P8400 and Xeon w5-2555X.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 64 |
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 | 0.49 | 27.16 |
| Recency | 15 July 2008 | 1 July 2024 |
| Physical cores | 2 | 14 |
| Threads | 2 | 28 |
| Power consumption (TDP) | 25 Watt | 252 Watt |
Core 2 Duo P8400 has 908% lower power consumption.
Xeon w5-2555X, on the other hand, has a 5442.9% higher aggregate performance score, an age advantage of 15 years, and 600% more physical cores and 1300% more threads.
The Intel Xeon w5-2555X is our recommended choice as it beats the Intel Core 2 Duo P8400 in performance tests.
Be aware that Core 2 Duo P8400 is a notebook processor while Xeon w5-2555X 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.
