Category Archives: Hardware

[MacOS] Comprehensive Gigabyte Hardware Specification List

2 Replies

With the advent of Snow Leopard many users have issues installing it onto PC based hardware. Well this is not very curious, since a PC is no Mac. Anyway as Gigabyte motherboards proved to be very close to the original Apple Intel specifications many people decided to buy those boards.

With the release of Snow Leopard DSDT patching seems to have become a must. Installation attempts will most likely fail without it. The intention of this list is to provide comprehensive information on the most used Gigabyte motherboards.

The original idea for this list was by a guy called ximekon (find original list here on InsanelyMac forums).

Model North- bridge South- bridge LAN Fire- Wire Audio BIOS Link Last Check
P35
P35-DS3L P35 ICH9 Gigabit -,- ALC888 F9 08/29/2009
P35-DS3 P35 ICH9 Gigabit -,- ALC889a F14 08/28/2009
P35-DS3R P35 ICH9 Gigabit -,- ALC889a F13 08/28/2009
EP35
EP35-DS3 P35 ICH9 RTL8111B -,- ALC889a F4 08/28/2009
EP35-DS3R P35 ICH9R RTL8111B -,- ALC889a F4 08/28/2009
EP35-DS3P P35 ICH9R Gigabit Yes ALC889a F6 08/28/2009
EP35-DS3L P35 ICH9 Gigabit -,- ALC888 F6 08/28/2009
EP35-DS4 P35 ICH9R RTL8111B -,- ALC889a F6 08/28/2009
EP45
EP45-DS3 P45 ICH10 2 x RTL8111C -,- ALC889a F9 08/28/2009
EP45-DS3R P45 ICH10R 2 x RTL8111C yes ALC889a F11c 08/28/2009
EP45-DS3P P45 ICH10R 2 x RTL8111C yes ALC889a F8 08/28/2009
EP45-DS3L P45 ICH10 RTL8111C -,- ALC888 F10 08/28/2009
EP45-DS3LR P45 ICH10R RTL8111C -,- ALC888 F2 08/28/2009
EP45-UD3 P45 ICH10 RTL8111C yes ALC889a F8 08/28/2009
EP45-UD3P P45 ICH10R RTL8111C yes ALC889a F9 08/28/2009
EP45-UD3L P45 ICH10 RTL8111C -,- ALC888 F5c 08/28/2009
EP45-UD3LR P45 ICH10R RTL8111C -,- ALC888 F5 08/28/2009
EP45-UD3R P45 ICH10R RTL8111C yes ALC889a F9 08/28/2009

you cant see this line, do you?

The Golden Gigabyte Model Rules

  • if last character of the model name is a “number” or a “P” (i.e. EP35-DS3 or EP45-DS3P etc.) it means ALC889a audio chipset
  • if last or penultimate character of the model name is an “L” (i.e. EP35-DS3L or EP45-DS3LR) it means ALC888 audio chipset
  • if last character of the model name is an “R” (i.e. P35-DS3R or EP45-UD3LR) it means SATA Raid controllers
  • The P35 or P45 strings in the beginning are fairly self explaining I suppose (P35 always with ICH9 and P45 always with ICH10)

Your Help is Wanted

Weather these rules nor the list above might be 100% accurate. It is only what I found on the net and summarized from the list above.

  • If you derived a DSDT.aml clean from a BIOS (like using Koalala’s DSDT patcher) and you fixed it for OSX86, you may post it in the comment’s section – don’t forget to tell how much RAM you had while compiling the DSDT.aml (Don’t add individual graphic or wi-fi strings. Just add onboard-devices like onboard-audio and onboard-ethernet.)
  • If your board is not on the list check Gigabyte’s pages and post the specifications in the comments section below.
  • If your board is listed but details above are wrong: please post it in the comments section below.
  • If you know the LAN chipset of the board and it is not listed precisely above (saying Gigabit) please post it in the comments section.

Please always crosscheck with the official Gigabyte specification page for your model (links to your model are included in the BIOS column) before adding a dsdt.aml or anything that could burn your BIOS.

[Laptop] Prolong Life Span and Capacity of your Battery

1 Reply

Have you ever wondered why the rechargeable battery in your laptop is covered by a shorter warranty period than the rest of your laptop? The reason is very simple. The life span of a laptop battery is much shorter. After only one year many batteries provide half the capacity they had in the beginning.

What is the reason?

The reason is fairly simple. When having been turned off, the laptop wastes a little bit of energy of the battery. Almost for nothing. When turning on your laptop the battery gets recharged again. But even if it’s only 1% or 2% that needed to be recharged, this reloading process is counted as a whole recharging cycle. Thus after having turned on and off your laptop twice a day for a period of 365 days, the battery has undergone most likely more than 700 recharging cycles. And the more recharging cycles it has undergone the worse its capacity becomes.

What can I do about it?

Althought the performance will become worse after some time, there are certainly some things to try:

  • If you use the laptop as a desktop PC substrate: you can remove the battery
  • Reduce the amount of reloading cycles: have your battery used until it’s almost empty, then recharge

Some more hints

Remember, that Li-Ion batteries lose capacity even if they are not used at all. Some people reported losses in capacity of up to 50% in two years. So the impact of using or not using may be big or just little in your case. Anyway, it’s worth a try.