Two posts I made over at XS which contain a few observations, which might come in handy some day. For reference only. Quote:
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1st spot reclaimed :) |
Having an increase CPU frequency is totally pointless. The only gain is in CH (220 -> 240), but with a normal increase in GPU frequency (hello cold + volts) you could gain a lot, a lot more. |
8 Attachment(s) Time for finding the voltage modifications for the IGP. AREA1 First, I measured the voltage on each pin and searched for those that change when I change the voltage in the bios: Code: COLOR -- HTV -- C/PCIV Inserting this information in a chart to see the scaling better: Or, more mathematical, correlations: BLUE = HT Link voltage, altough the voltage measured with a DMM = Bios value +0.3v. Not sure if this is correct. RED = NB Core voltage, not entirely sure, but I assume the core voltage is higher than the IGP voltage YELLOW = IGP Voltage, seems pretty correct since when I set the voltage in the bios at 1.6v, I can hit 1.1GHz core and other people do the same frequency at around 1.38v Vigp. PURPLE = ???, no idea what this does. It scales with the NB voltage setting in the bios, though. AREA 2: Red spot on picture underneath is Sideport memory readout (scaling with voltage options in the bios): AREA 3: This chip seems to be the one that's modified on HD3xxx and HD4xxx cards to increase Vgpu, so I added it. Not sure what's it doing on the board, though ... DATASHEET SIDEPORT: http://www.qimonda.com/download.jsp?...rev064_www.pdf |
(hoping Geoffrey sees this thread) |
I just did, though too informational for me to quickly read through :p Any requests? |
Voltage modifications. Only post #17 is FYI :) |
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