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us.ngaodu24.com wish to share with you the right way to convert discrete VGA to share on Acer 8730G utilizing 2.5 Ghz T9300 cpu, 6M cache, 800Mhz bus. 18.4-inch display screen, utilizing PM45G northbridge and video card HD4670 (216-0728014).
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To modify again to VGA share, we have to exchange the Northbridge PM45 chip with the GL40 or GM45 chip. Within the article, I’ll exchange it with a north chip GL40, if attainable, exchange the GM45 to run higher. As a result of the GL40 solely helps Ram upto 4Gb and cpu bus 800 or much less (working its previous CPU T9300 has no impact). In the meantime, GM45 helps as much as 8Gb ram and as much as 1066 cpu.
To transform to vga share you’ll want to have
Chipset: GL40 or GM45.
Acer 8730G block diagram.
0 Ω resistor.
Perseverance.
Join resistors RN44 and RN45 in order that the 27Mhz clock goes to the CLK block within the North chip to stimulate its graphics capabilities. As we see in discrete VGA playing cards on the desktop there’s all the time a 27Mhz quartz subsequent to the GPU.
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Nối điện trở RN44, RN45 - A very powerful is the 1.05v energy provide for GFXCore (quickly understood because the supply for the built-in graphics processing core within the North chip). Right here we’ll spend numerous 0 resistors to attach the circuit and apart from we’ve got to take away some pointless 0 resistors. Every part on the diagram is written, nothing to fret about. For instance: When we’ve got not eliminated the R100, measure the two capacitors on the again of the GL40, it’s 0 Ω like touching. That is the supply GFX Core.
- After we take away the capacitor R100, the chip’s again has a resistance of 21 Ω. Individuals are preventing right down to the bottom for the aim of not supplying energy to the graphics processing unit as a result of the North PM45 chip doesn’t have this perform.
Change the place R163 to R327 (space pin 73 of IO 775L) and add R182 with a price of 0 ohms in order that IO understands that the machine is utilizing shared VGA, not discrete VGA. We needn’t fear about the issue of reloading the BIOS for it.
In brief: Changing VGA to share is a quite simple course of that any technician can do. More often than not discovering the resistor and soldering it requires endurance. We simply must open the circuit diagram, the place there’s the phrase UMA we discover the part to put in, the place there’s the phrase DIS we take away the part. And eventually we could have a motherboard that makes use of VGA share fully. If your palms, have a look at the diagram properly, sooner or later we are able to change VGA from 2-3 totally different machines.
That is the right way to convert video card to share for Acer 8730G that I’ve carried out efficiently. Have enjoyable guys.
