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The IDT R5000 Processor
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The R5000, designed by Quantum Effect Devices (QED), replaced the R4600 in 1996. The R5000 FPU had more flexible single precision floating-point scheduling than the R4x00,
and as a result, R5000-based SGI Indys had much better graphics
performance than similarly clocked R4400 Indys with the same graphics hardware. SGI gave the old graphics board a new name (XL8 -> XGE8) when it was combined with R5000
in order to emphasize the improvement.
References:
MIPS R5000 introduction
MIPS R5000: Fast, Affordable 3-D
IDT 79RV5000 Documents
R5000 at SGIstuff
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