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The Intel 8080 used by these computers was an 8-bit processor, with 16-bit address space, which allowed it access up to 64 KB of memory; .COM executables used with CP/M have a maximum size of 64 KB due to this, as do those used by DOS operating systems for 16-bit microprocessors.
Auxiliary RAM bus: 8-bit; Auxiliary RAM bus bandwidth: 81 MB/s [5] CPU can read/write blocks from RAM to ARAM through DMA; ARAM can be used for miscellaneous low-bandwidth purposes; Stereo output (may contain 5.1-channel surround via Dolby Pro Logic II) [5] [11] Video Modes 640×480 interlaced @ 60 Hz
IOP memory: 2 MB of 32-bit EDO-RAM @ 37.5 MHz, 150 MB/sec peak bandwidth [23] [24] Handles communication between external peripherals or devices & the hardware, also helping transfer data to the SPU2, the system's sound processing unit, via the same bus, its 32-bit bus being shared between the SPU2, optical drive, USB ports and more [25] [23]
It is a 32-bit design; the 68EC020 microprocessor is faster than the 68000 and has 2 MB of RAM as standard. The AGA chipset used in the A1200 is a significant improvement. AGA increases the color palette from 4096 colors to 16.8 million colors with up to 256 on-screen colors normally, and an improved HAM mode allowing 262,144 on-screen colors.
POWER8, 64-bit, hex or twelve core, 8 way SMT/core, 5.0 GHz, follows the Power ISA 2.07. Introduced in 2014. POWER9, 64-bit, PowerNV 24 cores of 4 way SMT/core, PowerVM 12 cores of 8 way SMT/core, follows the Power ISA 3.0. Introduced in 2016. Power10, 64-bit, 15 SMT8 or 30 SMT4 cores, will follow the Power ISA 3.1. Introduced in 2021.
Many 32-bit computers have 32 physical address bits and are thus limited to 4 GiB (2 32 words) of memory. [3] [4] x86 processors prior to the Pentium Pro have 32 or fewer physical address bits; however, most x86 processors since the Pentium Pro, which was first sold in 1995, have the Physical Address Extension (PAE) mechanism, [5]: 445 which allows addressing up to 64 GiB (2 36 words) of memory.
Also, each module has eight RAM chips, but the lower one has an unoccupied space for the ninth chip; this space is occupied in ECC DIMMs. Three SDRAM DIMM slots on a ABIT BP6 computer motherboard. A DIMM ( Dual In-Line Memory Module ) is a popular type of memory module used in computers.
An 8-bit byte can represent 256 (2 8) distinct values, such as non-negative integers from 0 to 255, or signed integers from −128 to 127. The IEEE 1541-2002 standard specifies "B" (upper case) as the symbol for byte ( IEC 80000-13 uses "o" for octet in French, [ nb 1 ] but also allows "B" in English).