Rise Technology MP6 family
Rise MP6 is a superpipelined and superscalar microprocessor designed as a low-cost and low-power alternative to Intel Pentium MMX family. The MP6 processor is fully compatible with x86 instruction set, supports MMX instructions, and runs at Front Side Bus frequencies up to 100 MHz and processor core frequencies up to 250 MHz. The processor has three integer units and three MMX pipelines which allows the CPU to execute up to three integer or MMX instructions in a single cycle. Fully pipelined floating point unit can execute up to two floating-point instructions per cycle. To improve processor performance the core utilizes branch prediction and a number of techniques used to resolve data dependency conflicts. Superpipelined architecture, multiple integer units and other core performance-enhancement features result in an equal or better integer, MMX and floating-point performance of the MP6 processors when compared to similar clocked AMD K6 and Intel Pentium MMX CPUs. Regrettably, all MP6 microprocessors, with the exception of the lowest clocked 166 MHz CPU, use "PR" rating, which is 22% - 46% higher than processor's internal frequency. This results in slower or significantly slower MP6 CPU performance when compared to AMD K6 and Intel Pentium MMX/Pentium II CPUs microprocessors running at MP6 rated frequency.
The Rise MP6 processors are manufactured in small 387-ball BGA package. Desktop versions of the processor are manufactured in the same package mounted on a Socket 7 PGA adapter.
Information below was provided to us by Chris Norrie:
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