You are not logged in.

  • Login

Sapphire HD6450 GDDR3 512MB Voltmods

Dear visitor, welcome to ocaholic - Board. If this is your first visit here, please read the Help. It explains in detail how this page works. To use all features of this page, you should consider registering. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.

mAlkAv!An

Kondenswasser-Säufer

  • "mAlkAv!An" started this thread

Posts: 17

Location: Deutschland, Greifswald

Occupation: Student (BWL-Diplom)

  • Send private message

1

Wednesday, June 8th 2011, 8:39pm

Sapphire HD6450 GDDR3 512MB Voltmods

Sapphire HD6450 GDDR3 512MB - non reference design


power supply

GPU und video memory are using a single phase pwm design at a time.


# Spule = choke
# Eingangskondensator = input cap
# Ausgangskondensator = output cap




vGPU modification

IC: FP6329
FB: Pin 6 | Ground: Pin 3
default resistance: 1842
recommended variable resistor: 50k | new resistance <= 1777

pencil mod is possible alternatively






vMEM modification

IC: FP6329
FB: Pin 6 | Ground: Pin 3
default resistance: 1057
recommended variable resistor: 50k | new resistance <= 1035

pencil mod is possible alternatively






voltage reading points

single output caps of GPU and VRAM switching regulators can be used as voltage reading points.

default voltages
GPU(Idle): 913mV
GPU(Last): 1002mV
VRAM(Idle): 1608mV
VRAM(Last): 1615mV






overclocking

The Sapphire card comes with default clocks of 625MHz(GPU)/667MHz(VRAM) and can be overclocked stable to 775MHz/1000MHz at stock voltages. Most benchmarks will still run at 800MHz/1050MHz.

GDDR3 ICs has been relabeled by AMD but regarding the overclocking capability and shape it might be some 1.1ns VRAMs in 96 FBGA package.





more to follow ...

Similar threads