Fri Jan 17, 2003 11:28 am
Hi. Ok, you don't say whether it is a 64mb or 128mb card. Visiontek produce their Ti4200 cards on the smaller 6 layered PCB design rather than the longer 8 layered PCB design which the Ti4400/4600's and enhanced Ti4200's adopt. If you have the 64mb version, this will most likely be loaded with 3.6ns memory, which has a thoretical peak clock speed of 550mhz. The default clock speed will be around 500mhz, so a 50mhz OC will be more or less garanteed, but expect to obtain clock speeds of around 600+mhz. If your using the 128mb version, this will probably be probably loaded with 4.0ns memory, which has a theoretical peak clock speed of 500mhz, and a default clock speed of 444mhz. Expect an OC of at least 550+mhz if that is the case. As for the core of the card, that'll be using the NV25, which is the exact same core in which the bigger brother Ti4600 uses, and thus designed for 300mhz clock speeds, so expect to OC the GPU from the default 250mhz in your Ti4200 to 300+mhz. The NV25 can usually hit speeds of around 320-330mhz! Personally, I've managed to get a Chaintech GT20 GF4 Ti4200 (128mb/4.0ns RAM) stable at 325/585mhz on the core/memory, which is very similar indeed to the PCB design and layout to your card.