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For example, an IBM PC with an Intel 80486 CPU running at 50 MHz will be about twice as fast (internally only) as one with the same CPU and memory running at 25 MHz, while the same will not be true for MIPS R4000 running at the same clock rate as the two are different processors that implement different architectures and microarchitectures ...
Instructions per second (IPS) is a measure of a computer's processor speed. For complex instruction set computers (CISCs), different instructions take different amounts of time, so the value measured depends on the instruction mix; even for comparing processors in the same family the IPS measurement can be problematic.
In computing, computer performance is the amount of useful work accomplished by a computer system. Outside of specific contexts, computer performance is estimated in terms of accuracy, efficiency and speed of executing computer program instructions. When it comes to high computer performance, one or more of the following factors might be involved:
53×10 3: Lincoln TX-2 transistor-based computer, 1958 [2] 92×10 3: Intel 4004, first commercially available full function CPU on a chip, released in 1971; 500×10 3: Colossus computer vacuum tube cryptanalytic supercomputer, 1943
[citation needed] These processors were faster than Pentiums of the same speed in some benchmarks, so Cyrix gave them a Performance Rating faster than their clock speed. [3] Some AMD K5 models also use the PR system. AMD initially branded its AMD K6 processors with a "PR2" rating but dropped this after consumer confusion. [4]
The useful work that can be done with any computer depends on many factors besides the processor speed. These factors include the instruction set architecture, the processor's microarchitecture, and the computer system organization (such as the design of the disk storage system and the capabilities and performance of other attached devices), the efficiency of the operating system, and the high ...
Some Xeon Phi processors support four-way hyper-threading, effectively quadrupling the number of threads. [1] Before the Coffee Lake architecture, most Xeon and all desktop and mobile Core i3 and i7 supported hyper-threading while only dual-core mobile i5's supported it.
$15,000,000 / 0.8 GFLOPS. Third-generation (integrated circuit-based) computer. 1997 $30,000 $56,940 Two 16-processor Beowulf clusters with Pentium Pro microprocessors [79] April 2000: $1,000 $1,798 Bunyip Beowulf cluster: Bunyip was the first sub-US$ 1/MFLOPS computing technology. It won the Gordon Bell Prize in 2000. May 2000: $640 $1,132 KLAT2