Core 2 Duo T6400 vs Core i7-870
Aggregate performance score
Core i7-870 outperforms Core 2 Duo T6400 by a whopping 330% based on our aggregate benchmark results.
Primary details
Comparing Core i7-870 and Core 2 Duo T6400 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1940 | 2937 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.24 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Core 2 Duo |
| Power efficiency | 1.96 | 1.24 |
| Architecture codename | Lynnfield (2009−2010) | Penryn (2008−2011) |
| Release date | 8 September 2009 (15 years ago) | 1 January 2009 (15 years ago) |
| Launch price (MSRP) | $305 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i7-870 and Core 2 Duo T6400 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 GHz |
| Boost clock speed | 3.6 GHz | 2 GHz |
| Bus rate | 2.5 GT/s | 800 MHz |
| L1 cache | 64 KB (per core) | no data |
| L2 cache | 256 KB (per core) | 2 MB |
| L3 cache | 8 MB (shared) | 2 MB L2 Cache |
| Chip lithography | 45 nm | 45 nm |
| Die size | 296 mm2 | no data |
| Maximum core temperature | 73 °C | 105 °C |
| Number of transistors | 774 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 1V-1.25V |
Compatibility
Information on Core i7-870 and Core 2 Duo T6400 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 | PGA478 |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-870 and Core 2 Duo T6400. 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 |
Security technologies
Core i7-870 and Core 2 Duo T6400 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-870 and Core 2 Duo T6400 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 i7-870 and Core 2 Duo T6400. 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 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-870 and Core 2 Duo T6400.
| 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.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Pros & cons summary
| Performance score | 1.98 | 0.46 |
| Recency | 8 September 2009 | 1 January 2009 |
| Physical cores | 4 | 2 |
| Threads | 8 | 2 |
| Power consumption (TDP) | 95 Watt | 35 Watt |
i7-870 has a 330.4% higher aggregate performance score, an age advantage of 8 months, and 100% more physical cores and 300% more threads.
Core 2 Duo T6400, on the other hand, has 171.4% lower power consumption.
The Core i7-870 is our recommended choice as it beats the Core 2 Duo T6400 in performance tests.
Note that Core i7-870 is a desktop processor while Core 2 Duo T6400 is a notebook one.
Should you still have questions on choice between Core i7-870 and Core 2 Duo T6400, ask them in Comments section, and we shall answer.
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