Wii:Motherboard Information
The following information and images have been sourced from Shank's Wii Super Thread on Bitbuilt.
RVL-001 Motherboards
RVL-CPU-01
Description
This is the motherboard used in launch consoles. It has a six layer PCB, 90 nm Hollywood GPU, 90 nm Broadway CPU, and the highest power consumption.
The 90 nm Hollywood GPU in the first three board revisions of the WIi was also effected by the bumpgate issues of many chipsets in the mid to late 2000's, but on the Wii it wasn't as easily noticed compared to other chipsets due to the very low TDP of the Hollywood. However, since the ARM processor in the GPU handles the instructions of WiiConnect24 while in standby mode with the fan turned off, the GPU gets too hot and the solder bumps between the die and substrate crack. This is easily countered by just having WiiConnect24's standby connection setting turned off.
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Board Scans
The following high quality board scans have been supplied by the scene developer known as Bushing.
RVL-CPU-20
Description
Minor tweak to the RVL-CPU-01. It didn't change much aside from the power delivery components, but the CPU was shrunk to 65 nm with the Broadway B. The GPU also had a slight revision called the Hollywood AA.
The efficiency was slightly increased from the new CPU, but not by much due to the GPU having far more functions and thus being the component with most of the power draw (especially when playing games).
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RVL-CPU-30
Description
This is the first motherboard that had some major changes, and it mainly involved a new Broadway-1 CPU that had a much smaller substrate.
Some of these motherboards also patched the boot1 bootloader from allowing access to modifications of boot2, meaning BootMii could no longer be installed early in the boot process.
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RVL-CPU-40
Description
The RVL-CPU-40 was another major motherboard revision to the Wii, and would be the last major revision until the Wii Mini. The general layout was vastly simplified and the PCB was reduced to being four layers for further cost cutting.
It retains the shrunken 65 nm Broadway-1 CPU, while also featuring a new 65 nm Hollywood-1 GPU. Since the GPU was the main component responsible for the Wii's power draw (especially during gaming), the efficiency was drastically increased compared to the previous motherboard. The new GPU was also no longer effected by the bumpgate issue that the previous 90 nm Hollywood and Hollywood AA had so WiiConnect24 in standby mode didn't cause them to fail.
Enthusiasts who intend to trim Wii motherboards to be much smaller on other projects tend to prefer RVL-001 motherboards with the Hollywood-1 (like this one) or any RVL-101 motherboard due to the much lower power draw and easier trimming procedure, as the PCB is thinner and the trimming area can be much smaller than older motherboards.
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RVL-CPU-60
Description
Minor revision to the RVL-CPU-40. Not much changed from the previous motherboard aside from swapping the linear regulator responsible to the "always on" 3.3v line to a switching regulator, which further reduced power draw by a small amount.
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RVL-101 Motherboards
RVK-CPU-01
Description
This is the first motherboard used on the Wii Family Editions. It's essentially an RVL-CPU-60 but with the I/O for GameCube peripherals was removed, with a propetary debugging header soldered in place of where the memory card connector goes.
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RVK-CPU-02
Description
This is the next revision featured in the RVL-101 consoles. There are no known differences between this and the RVK-CPU-01.
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RVL-201 Motherboards
RVO-CPU-01
Description
The last ever motherboard made for the Wii as a whole, and was used for the Wii Mini. It has been drastically redesigned, simplified, and shrunken in order to both reduce the size and cost of the console.
It still retains the same 65 nm GPU and CPU that were first used on the RVL-CPU-40.
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