Core 2 Duo T9550 vs Core i7-875K
Aggregate performance score
Core i7-875K outperforms Core 2 Duo T9550 by an impressive 71% based on our aggregate benchmark results.
Primary details
Comparing Core i7-875K and Core 2 Duo T9550 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1941 | 2378 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.07 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Core 2 Duo |
| Power efficiency | 1.94 | 3.08 |
| Architecture codename | Lynnfield (2009−2010) | Penryn (2008−2011) |
| Release date | 30 May 2010 (14 years ago) | 1 January 2009 (15 years ago) |
| Launch price (MSRP) | $486 | $316 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i7-875K and Core 2 Duo T9550 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) | 2 (Dual-core) |
| Threads | 8 | 2 |
| Base clock speed | 2.93 GHz | 2.66 GHz |
| Boost clock speed | 3.6 GHz | 2.66 GHz |
| Bus rate | 2.5 GT/s | 1066 MHz |
| L1 cache | 64 KB (per core) | 128 KB |
| L2 cache | 256 KB (per core) | 6 MB |
| L3 cache | 8 MB (shared) | 6 MB L2 Cache |
| Chip lithography | 45 nm | 45 nm |
| Die size | 296 mm2 | 107 mm2 |
| Maximum core temperature | 73 °C | 105 °C |
| Number of transistors | 774 million | 410 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
| VID voltage range | no data | 1.05V-1.212V |
Compatibility
Information on Core i7-875K and Core 2 Duo T9550 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 | no data |
| Socket | FCLGA1156,LGA1156 | BGA479,PGA478 |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-875K and Core 2 Duo T9550. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | no data |
| Demand Based Switching | - | - |
| PAE | 36 Bit | no data |
| FSB parity | no data | - |
Security technologies
Core i7-875K and Core 2 Duo T9550 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-875K and Core 2 Duo T9550 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 i7-875K and Core 2 Duo T9550. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
| Maximum memory size | 16 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 21 GB/s | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-875K and Core 2 Duo T9550.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 16 | no data |
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 | 1.95 | 1.14 |
| Recency | 30 May 2010 | 1 January 2009 |
| Physical cores | 4 | 2 |
| Threads | 8 | 2 |
| Power consumption (TDP) | 95 Watt | 35 Watt |
i7-875K has a 71.1% higher aggregate performance score, an age advantage of 1 year, and 100% more physical cores and 300% more threads.
Core 2 Duo T9550, on the other hand, has 171.4% lower power consumption.
The Core i7-875K is our recommended choice as it beats the Core 2 Duo T9550 in performance tests.
Note that Core i7-875K is a desktop processor while Core 2 Duo T9550 is a notebook one.
Should you still have questions on choice between Core i7-875K and Core 2 Duo T9550, ask them in Comments section, and we shall answer.
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