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AB-PM4
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AB-PM4 (c) 199? Abit The AB-PM4 was positioned as a high-performance alternative to the SiS and ALi boards. By utilizing the UMC chipset, Abit aimed to provide users with a board that could squeeze out extra performance in memory-intensive DOS applications. It is widely considered one of the most "optimized" 486 motherboards ever produced. - TECHNICAL - Chipset: UMC UM8498F / UM8496F. CPU Support: Socket 3. Like the other Abit "P" boards, it is highly jumper-configurable for voltages and multipliers, supporting Intel, AMD, and Cyrix 486-class chips. Expansion: 3x PCI slots / 4x ISA slots. Memory: 4x 72-pin SIMM sockets. Form Factor: Baby AT. Cache: 256KB or 512KB of L2 cache. - TRIVIA - The UMC "Speed Demon": The UMC UM8498 chipset implemented on the AB-PM4 is frequently benchmarked as faster than the SiS 496/497 in terms of DRAM latency. If you wanted the highest possible frame rates in DOOM or Duke Nukem 3D on a 486, this was often the board that achieved it. The "P" Series Distinction: Having the PB4 (ALi), PV4 (SiS), and PM4 (UMC) gives your database a perfect look at the "Chipset Wars" of the mid-90s. Abit was essentially letting the customer choose their preferred chipset while keeping the same high-quality PCB design and excellent documentation. - SOURCES - Machine's Bios.
Your Changes (editable)
AB-PM4 (c) 199? Abit The AB-PM4 was positioned as a high-performance alternative to the SiS and ALi boards. By utilizing the UMC chipset, Abit aimed to provide users with a board that could squeeze out extra performance in memory-intensive DOS applications. It is widely considered one of the most "optimized" 486 motherboards ever produced. - TECHNICAL - Chipset: UMC UM8498F / UM8496F. CPU Support: Socket 3. Like the other Abit "P" boards, it is highly jumper-configurable for voltages and multipliers, supporting Intel, AMD, and Cyrix 486-class chips. Expansion: 3x PCI slots / 4x ISA slots. Memory: 4x 72-pin SIMM sockets. Form Factor: Baby AT. Cache: 256KB or 512KB of L2 cache. - TRIVIA - The UMC "Speed Demon": The UMC UM8498 chipset implemented on the AB-PM4 is frequently benchmarked as faster than the SiS 496/497 in terms of DRAM latency. If you wanted the highest possible frame rates in DOOM or Duke Nukem 3D on a 486, this was often the board that achieved it. The "P" Series Distinction: Having the PB4 (ALi), PV4 (SiS), and PM4 (UMC) gives your database a perfect look at the "Chipset Wars" of the mid-90s. Abit was essentially letting the customer choose their preferred chipset while keeping the same high-quality PCB design and excellent documentation. - SOURCES - Machine's Bios.
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