The Cyrix 6x86 is a line of sixth-generation, 32-bit x86 microprocessors designed and released by Cyrix in 1995. Cyrix, being a fabless company, had the chips manufactured by IBM and SGS-Thomson.[1][2] The 6x86 was made as a direct competitor to Intel's Pentium microprocessor line, and was pin compatible. During the 6x86's development, the majority of applications (office software as well as games) performed almost entirely integer operations. The designers foresaw that future applications would most likely maintain this instruction focus. So, to optimize the chip's performance for what they believed to be the most likely application of the CPU, the integer execution resources received most of the transistor budget. This would later prove to be a strategic mistake, as the popularity of the P5 Pentium caused many software developers to hand-optimize code in assembly language, to take advantage of the P5 Pentium's tightly pipelined and lower latency FPU. For example, the highly anticipated first-person shooter Quake used highly optimized assembly code designed almost entirely around the P5 Pentium's FPU. As a result, the P5 Pentium significantly outperformed other CPUs in the game.[3][4][5][6]
^Slater, Michael (May 28, 1996). "Beyond the Pentium; Intel's top challengers have reached the Pentium level, but do they pose a threat to the king of the CPU hill? We examine the chips and vendors to find out". PC Mag. Vol. 15, no. 10. Ziff Davis, Inc. pp. 100–102. ISSN 0888-8507. Retrieved March 30, 2022.
^"CYRIX CLAIMS ITS 100MHZ 6X86 CLONE IS THE FASTEST". TechMonitor. October 9, 1995. Retrieved April 25, 2022.
^Potoroaca, Adrian (December 30, 2021). "Cyrix: Gone But Not Forgotten; Peak Cyrix Through the Lens of Quake". TechSpot. Retrieved April 5, 2022.
^Proven, Liam (June 5, 2016). "The rise & fall of the first real x86 rival to Intel: the Cyrix 6x86". Liam On Linux. Archived from the original on April 22, 2021. Retrieved April 5, 2022.
^Sood, Yatharth (July 24, 2020). "How did a single game lead to the shake-up of an entire industry, and sounded the death knell of an entire corporation?". Medium. Retrieved April 7, 2022.
The Cyrix6x86 is a line of sixth-generation, 32-bit x86 microprocessors designed and released by Cyrix in 1995. Cyrix, being a fabless company, had the...
with a new name, Cyrix's 5x86 implemented some Pentium-like features. Later in 1995, Cyrix released its best-known chip, the Cyrix6x86 (M1). This processor...
by IBM. The line came out about 5 months before the more famous Cyrix6x86. The Cyrix 5x86 was one of the fastest CPUs ever produced for Socket 3 computer...
The Cyrix coma bug is a design flaw in Cyrix6x86 (introduced in 1996), 6x86L, and early 6x86MX processors that allows a non-privileged program to hang...
acquired these techniques around 1995 with the releases of Pentium Pro, Cyrix6x86, Nx586, and AMD K5. When a computer program accesses the same data repeatedly...
was found to be fairly low compared to the competition. The fact that Cyrix6x86-line were only 486-compatible, not 100% Pentium-compatible, intensified...
Pentium competitors such as the Cyrix6x86 did not always have a TSC and may consider RDTSC an illegal instruction. Cyrix included a Time Stamp Counter...
share. WinChip C6 was a competitor to the Intel Pentium and Pentium MMX, Cyrix6x86, and AMD K5/K6. It performed adequately, but only in applications that...
Cyrix, 6x86 Processor data book, order no. 94175-01, March 1996, section 2.6.5, p. 74 Linux kernel archive, Re: Cyrix6x86 Patch.., 4 Nov 1996 Cyrix,...
motherboard. Processors that used Socket 7 are the AMD K5 and K6, the Cyrix6x86 and 6x86MX, the IDT WinChip, the Intel P5 Pentium (2.5–3.5 V, 75–200 MHz)...
and Technologies (the Super MATH coprocessors), Cyrix (the FasMath, Cx87SLC, Cx87DLC, etc., 6x86, Cyrix MII), Fujitsu (early Pentium Mobile etc.), Harris...
and also used for 80486 motherboards upgrades. While the Cyrix Cx5x86 faded when the Cyrix6x86 took over, the AMD Am5x86 remained important given AMD K5...
as the processor was based on the 5x86 (a scaled down version of the Cyrix6x86). While the 5x86 was intended to compete with the Intel Pentium line,...
Technology of the People's Republic of China Cyrix MII, a rebranded Cyrix 6x86MX CPU, which was an updated Cyrix6x86 with the MMX instruction set Search for...
allowed higher clock frequencies compared to designs such as the advanced Cyrix6x86. The simplest processors are scalar processors. Each instruction executed...
The Cyrix Cx486 was an x86 microprocessor designed by Cyrix. It primarily competed with the Intel 486 with which it was software compatible, would operate...
with low-cost chips from Intel competitors, such as the AMD K6 series or Cyrix6x86. The graphics controller had Direct3D 6.0 and OpenGL support, although...
Anatomical Therapeutic Chemical Classification System a codename for Cyrix6x86 processor M1-DA, M1, or VESA Plug and Display connector a part number...
mirroring other contemporary x86 designs such as the NexGen Nx586 and Cyrix6x86. The Pentium Pro pipeline had extra decode stages to dynamically translate...
of the Intel Pentium. On the Cyrix 5x86 and 6x86 CPUs, CPUID is not enabled by default and must be enabled through a Cyrix configuration register. On NexGen...
in-order superscalar original Pentium and the out-of-order superscalar Cyrix6x86 are well-known examples of this. The frequent memory accesses for operands...
memory on the 16-bit bus containing the processor registers of the TMS9900 Cyrix6x86 is the only x86-compatible desktop processor to incorporate a dedicated...
"CentaurHauls" – IDT WinChip/Centaur (Including some VIA and Zhaoxin CPUs) "CyrixInstead" – Cyrix/early STMicroelectronics and IBM "GenuineIntel" – Intel "GenuineIotel" –...
K5's floating-point performance was regarded as superior to that of the Cyrix6x86,[clarification needed] it was slower than that of the Pentium, although...
scheme: IBM partnered with Cyrix to produce the 5x86 and then the very efficient 6x86 (M1) and 6x86MX (MII) lines of Cyrix designs, which were the first...
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