BIOS dump read from a Palit GeForce 8600 GTS graphics card with 256 MB of memory, compressed in a RAR archive of about 200 KB. Such a dump is used to restore a card whose VBIOS was lost or corrupted, flashed with nvflash or written directly to the SPI or parallel flash chip with a programmer. Cards of this era came in several PCB layouts and memory vendors, so compare your board carefully, and read out the current chip before replacing its contents.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →