Pentium 4 HT 661 vs i5-2520M
Primary details
Comparing Core i5-2520M and Pentium 4 HT 661 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2221 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Core i5 | no data |
| Power efficiency | 3.81 | no data |
| Architecture codename | Sandy Bridge (2011−2013) | Cedar Mill (2006) |
| Release date | 1 February 2011 (13 years ago) | 5 January 2006 (18 years ago) |
| Launch price (MSRP) | $225 | $401 |
Detailed specifications
Core i5-2520M and Pentium 4 HT 661 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 | 4 | 2 |
| Base clock speed | 2.5 GHz | 3.6 GHz |
| Boost clock speed | 3.2 GHz | 3.6 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | no data |
| Multiplier | 25 | no data |
| L1 cache | 64K (per core) | 28 KB |
| L2 cache | 256K (per core) | 2 MB |
| L3 cache | 3 MB (shared) | 0 KB |
| Chip lithography | 32 nm | 65 nm |
| Die size | 149 mm2 | 81 mm2 |
| Maximum core temperature | 100 °C | no data |
| Maximum case temperature (TCase) | no data | 69 °C |
| Number of transistors | 624 million | 188 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Core i5-2520M and Pentium 4 HT 661 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 (Uniprocessor) | 1 |
| Socket | PPGA988 | 775 |
| Power consumption (TDP) | 35 Watt | 86 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-2520M and Pentium 4 HT 661. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX | no data |
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | - | no data |
| FDI | + | no data |
| Fast Memory Access | + | no data |
Security technologies
Core i5-2520M and Pentium 4 HT 661 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Identity Protection | + | - |
| Anti-Theft | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-2520M and Pentium 4 HT 661 are enumerated here.
| AMD-V | + | - |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-2520M and Pentium 4 HT 661. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR1, DDR2, DDR3 |
| Maximum memory size | 16 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 21.335 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 3000 | no data |
| Quick Sync Video | + | - |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.3 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i5-2520M and Pentium 4 HT 661 integrated GPUs.
| Number of displays supported | 2 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| SDVO | + | no data |
| CRT | + | no data |
Peripherals
Specifications and connection of peripherals supported by Core i5-2520M and Pentium 4 HT 661.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 16 | no data |
Pros & cons summary
| Recency | 1 February 2011 | 5 January 2006 |
| Physical cores | 2 | 1 |
| Threads | 4 | 2 |
| Chip lithography | 32 nm | 65 nm |
| Power consumption (TDP) | 35 Watt | 86 Watt |
i5-2520M has an age advantage of 5 years, 100% more physical cores and 100% more threads, a 103.1% more advanced lithography process, and 145.7% lower power consumption.
We couldn't decide between Core i5-2520M and Pentium 4 HT 661. We've got no test results to judge.
Be aware that Core i5-2520M is a notebook processor while Pentium 4 HT 661 is a desktop one.
Should you still have questions on choice between Core i5-2520M and Pentium 4 HT 661, ask them in Comments section, and we shall answer.
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