ja genau das ist ja das prinzip. die Dual/GS PCB layout haben 12 x 3 (Transitoren x Spulen) die normale Anordnung hat 8 x 4 wobei die Spulen nur Halb so gross sind, deshalb denke ich die sind parallel angeordnet, weil manche hier davon gesprochen habenm es sei nur eine 2phasen Versorgung...
Was ich etwas schade finde das ati schon seit 1950er Digitale PWMs eingesetzt hatt, diese aber nur noch ihren flagschiffen gönnt. Diese sind nochmals besser in der Leistung und vorallem sie neigen nicht zum zirpen(naja gut dafür mucken sie andere Töne, aber eher selten^^)
Std 4850 2 + 1 Phase (GPU/RAM) versorgung:
The card has a simple two-phase GPU voltage regulator based on an uP6201 controller. The power transistors are cooled with a small individual heatsink on this card because it uses a nonstandard cooler. The memory voltage regulator has one phase and is based on an uP6101 chip.
Für Interessierte, Digital Stromversorung ati 2900(ähnlich der heutigen 4870er):
Radeon HD 2900 XT uses the so-called digital voltage regulator, like the one that we saw on the first Radeon X1950 Pro. However, this one is definitely intended to handle much higher powers: even the very first estimates suggest that R600 graphics core consumes more than 130W of power and is actually most likely to sit around 140-160W. Unlike the classical voltage regulator, the digital one boasts higher operational frequency (up to a few MHz) and uses almost no electrolytic capacitors. The heart of this circuitry is the two high-frequency digital PWM controllers - Volterra VT1115M – operating at up to 1.3MHz frequency. Power elements managed by controllers are not the traditional MOS transistors, but special controllers with digital interface. Judging by the number of inductors, the voltage regulator is designed as a seven-phase circuitry: one VT1115M can manage a few modules. In this case the upper chip manages three modules like that, while the lower chip – four. All 6 phases may be powering the graphics processor directly, while the seventh is one of the power sources for the memory, however, it can also be possible that there is a seven-phase GPU power circuitry and a separate voltage regulator for VDD and VDDQ.