. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.8.3Processor Board

Prior to the 4150 model, there are two processor board PCAs with either 8-MB or 16-MB of memory and with a level-2 cache populating the models with 100-, 120- and 133-MHz processors. The MMX processor on the 4150 , 4150T, and 4160T are P55CLM processors operating at 150 or 166 MHz. These processors are not compatible with 4131T, 4130T, 4120T, 4120, 4110, and 4100 models.

In each of the 4100 and 4200 systems there are two processor board PCAs with a level- 2 cache. The processor board contains the CPU, the OPTi 82C557 system Controller, the OPTi 82C556 data buffer controller, and, if populated on the PCB, cache data RAM. Also mounted on the processor board is an electronic temperature sensor that interfaces to the system through the I2C bus.

The 4210T and 4220T processor boards include the 233- and 266-MHz MMX processors and the MTXC controller, part of the Intel 430TX mobile chipset. The 4200 Family processor boards also include the electronic sensor that interfaces to the system through the I2C bus.

1.8.4Processor

The P54LM and the P55CLM Intel Pentium processors are fully compatible with the entire installed base of applications for DOS, Windows, and OS/2, branch predition, and separate code and data caches all provide increased performance over previous x86 processors.

Reduced voltage operation and enhanced SL power management features provide significant power savings over other Pentium versions.

For the 4200 Family, the 233 MHz CPU core runs on a 1.8 V supply. The 266 MHz CPU core runs on a 2.0 V supply. The interface for the 4200 Family is 2.5 V to 3.3 V.

For the 4100 Family, the CPU core runs on a 2.9V supply for lower power operation, while the I/O buffers are powered at 3.3V for compatibility with the rest of the system.

1.8.5System Memory

See Tables 1-1 and 1-2 for the system memory contained on models for the 4100 and 4200 Families. Up to 96-MB of expansion memory is available. Base memory is onboard memory built into the system I/O board. Expansion memory consists of memory expansion board kits available as user installable options.

1.8.6Cache

The 4200 Family models have 256-KB or 512-KB of cache data RAM and 64-KB of cache tag RAM if populated on the PCB are mounted on the processor module.

The 4110-4160T models have 256-KB of cache data RAM and 32-KB of cache tag RAM if populated on the PCB are mounted on the processor module.

Product Description 1-19

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Compaq 4110D, 4130T, 4150T, 4140T, 4131T, 4200, 4125T, 4160T SLIMLINE, 4120, 4125D, 4115 Processor Board, System Memory, Cache
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4130T, 4200, 4115, 4150, 4131T specifications

The Compaq 4160T Slimline, along with its variants – 4125D, 4150, 4120T, and 4150T – represents a series of personal computers that were engineered during the early 1990s. These systems were particularly popular for their compact design and efficient performance, catering to both individual users and businesses seeking reliable computing solutions.

The Compaq 4160T Slimline was designed with portability in mind. It featured a slim form factor that allowed it to fit easily into limited spaces, making it an ideal choice for environments where desk space was at a premium. One of the standout characteristics of the 4160T was its lightweight design, which aided in ease of transport.

The 4125D variant was notable for its robust performance capabilities. It utilized an Intel 486 processor, which provided enhanced processing power for multitasking and running memory-intensive applications. The system came equipped with an array of RAM options and upgradable storage, making it adaptable to various user needs.

The Compaq 4150 and 4150T models built upon the strong foundation of their predecessors, offering improved specifications. These models supported a greater range of peripheral devices, including external drives, printers, and modems, thanks to their extensive connectivity options. The 4150T further featured advanced graphics capabilities, making it suitable for light gaming and multimedia tasks.

The 4120T targeted users who prioritized a balance between performance and cost. With its value-driven design, this model provided essential computing features and was often utilized in educational settings and small offices. Its reliability and ease of use made it a favored choice for individuals who required straightforward functionality.

All models in this series showcased Compaq's commitment to innovation, featuring technologies such as integrated memory management and support for DOS-based applications. Additionally, the systems were equipped with customizable options, allowing users to choose specific configurations that best suited their unique requirements.

In summary, the Compaq 4160T Slimline and its counterparts presented a solution that combined compact design with practical performance. Their legacy continues to remind us of the evolution of personal computing and the foundational role that systems like these played in the development of modern PCs. These models represented a bridge between earlier computing technology and the more sophisticated devices that followed, paving the way for advancements in the industry.
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