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The VL-Bus operated at the same clock speed as the i486-bus (basically a local bus) while the PCI bus also usually depended on the i486 clock but sometimes had a divider setting available via the BIOS. This could be set to 1/1 or 1/2, sometimes even 2/3 (for 50 MHz CPU clocks).
A version of IntelDX4 featuring write-back cache was released in October 1994. The original write-through versions of the chip are marked with a laser-embossed “&E,” while the write-back-enabled versions are marked “&EW.” i486 OverDrive editions of IntelDX4 had locked multipliers, and therefore can only run at 3× the external clock speed.
20 MHz FSB, 40 MHz clock speed. This version of the 20-MHz Overdrive (ODP) was available for the 16- and 20-MHz Intel486 SX CPU for USD $549. [3] 25 MHz FSB, 50 MHz clock speed. The 25-MHz OverDrive (ODP) version was available for USD $699. [4] 33 MHz FSB, 66 MHz clock speed; 25 MHz FSB, 75 MHz clock speed; 33 MHz FSB, 100 MHz clock speed
The i486DX2 was nearly identical to the i486DX, but it had additional clock multiplier circuitry. It was the second CPU chip to use clock doubling, whereby the processor runs two internal logic clock cycles per external bus cycle. An i486 DX2 was thus significantly faster than an i486 DX at the same bus speed thanks to the 8K on-chip cache ...
A 14-stage instruction pipeline that allows for higher clock speeds. SSE4.1 support for all Core 2 models manufactured at a 45 nm lithography. Support for the 64-bit x86-64 architecture, which was previously only offered by Prescott processors, the Pentium 4 last architectural installment. Increased FSB speed, ranging from 533 MT/s to 1600 MT/s.
The Pentium (also referred to as the i586 or P5 Pentium) is a microprocessor introduced by Intel on March 22, 1993. It is the first CPU using the Pentium brand. [3] [4] Considered the fifth generation in the x86 (8086) compatible line of processors, [5] succeeding the i486, its implementation and microarchitecture was internally called P5.
The SL was designed for use in mobile computers. It was produced between November 1992 and June 1993. Clock speeds available were 20, 25 and 33 MHz. The i486SL contained all features of the i486DX. In addition, the System Management Mode (SMM) (the same mode introduced with i386SL) was included with this processor. The system management mode ...
This chipset supports the i486 microprocessor. It was expected to be available in the later half of 1989. [16] 82340SX PC AT - announced in January 1990, it is the Topcat chipset licensed from VLSI. [17] 82340DX PC AT - announced in January 1990, it is the Topcat chipset licensed from VLSI. [17] 82350 EISA - announced in September 1988.