Hacking RADEON 9500 to become a RADEON 9700
Hacking RADEON 9500 to become a RADEON 9700
Guys from Overclockers.RU made some experiments with 128 MB card RADEON 9500 from Sapphire, as a result they converted it in... RADEON 9700 card!
Card on ATI RADEON 9500 have 128-bit or 256-bit bus, depending on a quantity of video memory. Since these boards are done on PCB from RADEON 9700, it equipped 64-bit half-sized versions, which have exactly half of chips, from RADEON 9700, i.e., 128 bits. Then the 128-megabaytnye boards, which have 8 chips of memory, installed exactly as on RADEON 9700, have the "valuable" 256-bit bus of memory.
For alteration it was required
- To solder one of the resistors, located on the base layer of chip RADEON 9500 of position (2-3) to position (1-2) or to install analogous, with the resistance 6,8 kOm
- flash a hack BIOS for Hercules RADEON 9700 downloaded from warp11
- try to overclock: in this case board equipped 3,6 ns memory from Infineon; therefore overclocking of memory is not strong, only to 300 MHz, but chip — from 275 to 370 MHz
The results obtained upon the acceleration illustrate the following graphs (in the testing they participated: 1 — board Sapphire RADEON 9500 128MB without overclocking, 2 – overclocked card, 3 – overclocked card with new BIOS, 4 — RADEON 9700. Test system: Intel P4 2800 MHz, ASUS P4S8X (SiS 648), 512 Mb. DDR SDRAM PC2700, Windows XP, DirectX 9, Chatalyst 3.0. Setups quality in Quake3 Arena — maximum, in UT2003 — Testure detail: highest, World detail: highest, Charachter detail: highest, Physics detail: normal, Character Of shadows: on, Dynamic Lighting: on, Detail Textures: on, Projectors: on, Decals: on, Coronas: on, Decal Stay: normal, Foliage: on, Trilinear Filtering: on).
Result: the altered and overclocked RADEON 9500 card outdistanced RADEON 9700! All details about this experiments are placed here.
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