Core i5-1235U vs Core 2 Duo T6400
Primary details
Comparing Core 2 Duo T6400 and Core i5-1235U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | not rated | 842 |
| Place by popularity | not in top-100 | 8 |
| Market segment | Laptop | Laptop |
| Series | Intel Core 2 Duo | Intel Alder Lake-M |
| Architecture codename | Penryn (2008−2011) | Alder Lake-U (2022) |
| Release date | 1 January 2009 (15 years ago) | 4 January 2022 (2 years ago) |
Detailed specifications
Core 2 Duo T6400 and Core i5-1235U 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) | 10 (Deca-Core) |
| Threads | 2 | 12 |
| Base clock speed | no data | 1.3 GHz |
| Boost clock speed | 2 GHz | 4.4 GHz |
| Bus support | 800 MHz | no data |
| L1 cache | no data | 928 KB |
| L2 cache | 2 MB | 9.5 MB |
| L3 cache | no data | 12 MB |
| Chip lithography | 45 nm | 10 nm |
| Maximum core temperature | 105 °C | 100 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | No | No |
Compatibility
Information on Core 2 Duo T6400 and Core i5-1235U 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 | PGA478 | BGA1744 |
| Power consumption (TDP) | 35 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo T6400 and Core i5-1235U. You'll probably need this information if you require some particular technology.
| AES-NI | no data | + |
| FMA | no data | + |
| AVX | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| TSX | no data | + |
Security technologies
Core 2 Duo T6400 and Core i5-1235U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Duo T6400 and Core i5-1235U are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Duo T6400 and Core i5-1235U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR4, DDR5 |
| ECC memory support | no data | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel Iris Xe Graphics G7 80EUs |
Peripherals
Specifications and connection of peripherals supported by Core 2 Duo T6400 and Core i5-1235U.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
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.
Benchmark coverage: 68%
Core i5-1235U outperforms Core 2 Duo T6400 by 1745% in Passmark.
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.
Benchmark coverage: 41%
Core i5-1235U outperforms Core 2 Duo T6400 by 710% in GeekBench 5 Single-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.
Benchmark coverage: 41%
Core i5-1235U outperforms Core 2 Duo T6400 by 1516% in GeekBench 5 Multi-Core.
Pros & cons summary
| Recency | 1 January 2009 | 4 January 2022 |
| Physical cores | 2 | 10 |
| Threads | 2 | 12 |
| Chip lithography | 45 nm | 10 nm |
| Power consumption (TDP) | 35 Watt | 15 Watt |
i5-1235U has an age advantage of 13 years, 400% more physical cores and 500% more threads, a 350% more advanced lithography process, and 133.3% lower power consumption.
We couldn't decide between Core 2 Duo T6400 and Core i5-1235U. We've got no test results to judge.
Should you still have questions on choice between Core 2 Duo T6400 and Core i5-1235U, ask them in Comments section, and we shall answer.
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