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Hello folks, we all know the XGPU is sort of cousin to Geforce 3 and Ti200, Ti500. Just found a tutorial on how to overclock the Geforce 3 series, basically it is about increasing voltage on the GPU core and RAM chips, by adding resistors to so called voltage controllers. The voltage controllers on the Geforce 3 series are SC1175CSW, similar controllers are on the Xbox too. One located unde the CPU, named SC1186CSW (PII, PIII voltage controller). And another one SC1110CS (voltage controller for DDR memory) located near the GAME1/2 connector. Need help of guys who know electronics, regarding how to apply same resistor mod to the Xbox RAM voltage controller. so the voltage between RAM chip's VDD contact and GND - will increase higher than stock tension of 3.06 volts. notes: - Geforce 3 have 2 x SC1175CSW , Xbox has one SC1110CS which fits the description - Xbox 1.0 motherboard was researched for this purpose, other motherboard revisions don't have SC1110CS - there was info on the web about a prototype Xbox motherboard which had a switch to overclock the GPU - Xbox 1.0 motherboard has GPU fan, other revisions don't have - my speculation is: one of voltage controllers located on Xbox motherboard feeds the GPU, it may be the one under CPU, because there is only 1 voltage controller of that kind in other Xbox revisions, only 1.0 has 2 of them, under CPU and near GAME1/2 connector. links: overclocking Geforce 3 overclocking Geforce 3 Ti200/Ti500 SC1175CSW - Geforce 3 voltage controller SC1110CS - Xbox RAM voltage controller K4D263238F-QC50 - Xbox RAM chips
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Board startup date: April 23, 2017 12:45:48