Linley Gwennap (27 de febrero de 1997). «Arthur Revitalizes PowerPC Line». Microprocessor Report11 (2). Archivado desde el original el 30 de julio de 2018. «The 603’s tiny 8K caches were notoriously poor for Mac OS software, particularly for 68K emulation; even the 603e’s caches cause a significant performance hit at higher clock speeds. Given Arthur’s design target of 250 MHz and up, doubling the caches again made sense.»
Linley Gwennap (27 de febrero de 1997). «Arthur Revitalizes PowerPC Line». Microprocessor Report11 (2). Archivado desde el original el 30 de julio de 2018. «The 603’s tiny 8K caches were notoriously poor for Mac OS software, particularly for 68K emulation; even the 603e’s caches cause a significant performance hit at higher clock speeds. Given Arthur’s design target of 250 MHz and up, doubling the caches again made sense.»