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Lifer
GeForce4 Ti1000 (High-End) - 128bit memory interface, 128 ÌB DDR SDRAM, Core frequency of 350Mhz, Clock frequency of 350Mhz DDR(700Mhz), AGP 8x
GeForce4 Ti500 (Mainstream) - 128bit memory interface, 128 ÌB DDR SDRAM, Core frequency of 300Mhz, Memory frequency of 300Mhz DDR(600Mhz), AGP 8x
GeForce4 MX Pro (Mass Market) - 128bit memory interface, 64 ÌB DDR SDRAM, Core frequency of 250Mhz, Memory frequency of 300Mhz DDR(600Mhz), AGP 8x
GeForce4 MX (Low-End) - 128bit memory interface, 64 ÌB DDR SDRAM, Core frequency of 250Mhz, Memory frequency of 275Mhz DDR(550Mhz), AGP 8x
Source
GeForce4 Ti500 (Mainstream) - 128bit memory interface, 128 ÌB DDR SDRAM, Core frequency of 300Mhz, Memory frequency of 300Mhz DDR(600Mhz), AGP 8x
GeForce4 MX Pro (Mass Market) - 128bit memory interface, 64 ÌB DDR SDRAM, Core frequency of 250Mhz, Memory frequency of 300Mhz DDR(600Mhz), AGP 8x
GeForce4 MX (Low-End) - 128bit memory interface, 64 ÌB DDR SDRAM, Core frequency of 250Mhz, Memory frequency of 275Mhz DDR(550Mhz), AGP 8x
Source