Pentium 4 660 vs Core 2 Duo T9900
Primary details
Comparing Core 2 Duo T9900 and Pentium 4 660 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2548 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Core 2 Duo | Pentium 4 |
| Architecture codename | Penryn (2008−2011) | Prescott 2M |
| Release date | 1 April 2009 (15 years ago) | no data |
| Launch price (MSRP) | $530 | no data |
| Current price | $112 (0.2x MSRP) | $54 |
Detailed specifications
Core 2 Duo T9900 and Pentium 4 660 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) | 1 (Single-Core) |
| Threads | 2 | 1 |
| Base clock speed | 3.06 GHz | 3.6 GHz |
| Boost clock speed | 3.06 GHz | 3.6 GHz |
| Bus support | 1066 MHz | 800 MHz |
| L1 cache | 128 KB | no data |
| L2 cache | 6 MB | no data |
| L3 cache | 6 MB L2 Cache | 2 MB L2 Cache |
| Chip lithography | 45 nm | 90 nm |
| Die size | 107 mm2 | no data |
| Maximum core temperature | 105 °C | 71 °C |
| Number of transistors | 410 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| VID voltage range | 1.05V-1.2125V | 1.2V-1.4V |
Compatibility
Information on Core 2 Duo T9900 and Pentium 4 660 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.
| Socket | BGA479,PGA478 | PLGA775,PPGA775 |
| Power consumption (TDP) | 35 Watt | 115 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo T9900 and Pentium 4 660. 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 | + |
| Thermal Monitoring | no data | + |
| Demand Based Switching | - | - |
| FSB parity | no data | - |
| Status | Discontinued | Discontinued |
Security technologies
Core 2 Duo T9900 and Pentium 4 660 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 T9900 and Pentium 4 660 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.
wPrime 32
wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.
Benchmark coverage: 18%
Pentium 4 660 outperforms Core 2 Duo T9900 by 235% in wPrime 32.
Pros & cons summary
| Physical cores | 2 | 1 |
| Threads | 2 | 1 |
| Chip lithography | 45 nm | 90 nm |
| Power consumption (TDP) | 35 Watt | 115 Watt |
We couldn't decide between Core 2 Duo T9900 and Pentium 4 660. We've got no test results to judge.
Be aware that Core 2 Duo T9900 is a notebook processor while Pentium 4 660 is a desktop one.
Should you still have questions on choice between Core 2 Duo T9900 and Pentium 4 660, ask them in Comments section, and we shall answer.
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