Core 2 Duo U7700 vs Core 2 Duo T6400
Primary details
Comparing Core 2 Duo T6400 and Core 2 Duo U7700 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core 2 Duo | Intel Core 2 Duo |
| Architecture codename | Penryn (2008−2011) | Merom-2048 (2006−2008) |
| Release date | 1 January 2009 (15 years ago) | 27 July 2006 (18 years ago) |
Detailed specifications
Core 2 Duo T6400 and Core 2 Duo U7700 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) | 2 (Dual-core) |
| Threads | 2 | 2 |
| Base clock speed | 2 GHz | 1.33 GHz |
| Boost clock speed | 2 GHz | 1.33 GHz |
| Bus rate | 800 MHz | 533 MHz |
| L1 cache | no data | 64 KB |
| L2 cache | 2 MB | 2 MB |
| L3 cache | 2 MB L2 Cache | 0 KB |
| Chip lithography | 45 nm | 65 nm |
| Die size | no data | 143 mm2 |
| Maximum core temperature | 105 °C | 100 °C |
| Number of transistors | no data | 291 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | 1V-1.25V | 0.8V-0.975V |
Compatibility
Information on Core 2 Duo T6400 and Core 2 Duo U7700 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 | P |
| Power consumption (TDP) | 35 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo T6400 and Core 2 Duo U7700. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | no data | + |
| Demand Based Switching | - | - |
| FSB parity | no data | - |
Security technologies
Core 2 Duo T6400 and Core 2 Duo U7700 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Duo T6400 and Core 2 Duo U7700 are enumerated here.
| VT-x | - | + |
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.
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.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
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
| Recency | 1 January 2009 | 27 July 2006 |
| Chip lithography | 45 nm | 65 nm |
| Power consumption (TDP) | 35 Watt | 10 Watt |
Core 2 Duo T6400 has an age advantage of 2 years, and a 44.4% more advanced lithography process.
Core 2 Duo U7700, on the other hand, has 250% lower power consumption.
We couldn't decide between Core 2 Duo T6400 and Core 2 Duo U7700. We've got no test results to judge.
Should you still have questions on choice between Core 2 Duo T6400 and Core 2 Duo U7700, ask them in Comments section, and we shall answer.
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