Xeon X3440 vs i7-870S
Aggregate performance score
Xeon X3440 outperforms Core i7-870S by a minimal 1% based on our aggregate benchmark results.
Primary details
Comparing Core i7-870S and Xeon X3440 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2025 | 2023 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Power efficiency | 2.01 | 1.74 |
| Architecture codename | Lynnfield (2009−2010) | no data |
| Release date | 19 July 2010 (14 years ago) | 1 July 2009 (15 years ago) |
Detailed specifications
Core i7-870S and Xeon X3440 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 | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 8 | 8 |
| Base clock speed | 2.66 GHz | 2.53 GHz |
| Boost clock speed | 3.6 GHz | 2.93 GHz |
| Bus rate | 2.5 GT/s | no data |
| L1 cache | 64 KB (per core) | no data |
| L2 cache | 256 KB (per core) | no data |
| L3 cache | 8 MB (shared) | 8 MB Intel® Smart Cache |
| Chip lithography | 45 nm | 45 nm |
| Die size | 296 mm2 | no data |
| Maximum core temperature | no data | 73 °C |
| Number of transistors | 774 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Core i7-870S and Xeon X3440 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 |
| Socket | FCLGA1156,LGA1156 | FCLGA1156,LGA1156 |
| Power consumption (TDP) | 82 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-870S and Xeon X3440. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | Intel® SSE4.2 |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | 1.0 |
| Hyper-Threading Technology | + | + |
| Idle States | + | + |
| Demand Based Switching | - | + |
| PAE | 36 Bit | 36 Bit |
Security technologies
Core i7-870S and Xeon X3440 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-870S and Xeon X3440 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-870S and Xeon X3440. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3-800, DDR3-1066, DDR3-1333 |
| Maximum memory size | 16 GB | 32 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 21 GB/s | 21 GB/s |
| ECC memory support | - | + |
Peripherals
Specifications and connection of peripherals supported by Core i7-870S and Xeon X3440.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 16 | 16 |
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.
Pros & cons summary
| Performance score | 1.74 | 1.75 |
| Recency | 19 July 2010 | 1 July 2009 |
| Power consumption (TDP) | 82 Watt | 95 Watt |
i7-870S has an age advantage of 1 year, and 15.9% lower power consumption.
Xeon X3440, on the other hand, has a 0.6% higher aggregate performance score.
Given the minimal performance differences, no clear winner can be declared between Core i7-870S and Xeon X3440.
Note that Core i7-870S is a desktop processor while Xeon X3440 is a server/workstation one.
Should you still have questions on choice between Core i7-870S and Xeon X3440, ask them in Comments section, and we shall answer.
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