Apollo VP3

Apollo VP3 (alias ETEQ 6628) is a x86 based Socket 7 chipset which was manufactured by VIA Technologies and was launched 1997. y. On its time Apollo VP3 was a high performance, cost effective, and energy efficient chipset. It offered AGP support for Socket 7 processors which was not supported at that moment by Intel, SiS and ALi chipsets. In November 1997 FIC released motherboard PA-2012, which uses Apollo VP3 and has AGP bus. This was the first Socket 7 motherboard supporting AGP.

Apollo VP3 supports 32 bits Socket 7 CPU-s, like Pentium, Pentium MMX, AMD K5, AMD K6, Cyrix 6x86, WinChip C2 and C6 CPU-s. It uses VT82C597 (or VT82C597AT for Baby AT and ATX motherboards) northbridge controller chip and AC97 compliant VT82C586B southbridge chip with ACPI power management system. VP3 has 64 bits memory bus; 32 bits 33 MHz PCI; 32 bits 66 MHz AGP 2X with sideband addressing, 133 MHz signalling and up to 533 MB/s transfer capability interfaces. It uses an integrated 10-bits TAG comparator and supports up to 2 MB pipelined burst synchronous SRAM (cache memory) and up to 1 GB ECC cachable RAM memory. Memory controller supports up to 8 memory pages (banks) interleaving mode, flexible row and column addresses, concurrent DRAM writeback, read around write capability, burst read and write operations, etc. (for more details see). Officially, the supported speeds of the memory bus are 50, 60 and 66 MHz, but the numerous implemented motherboards with VP3 have also 75 and even 83 MHz bus speed capability.

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