PS3 Will Undervolting Without Soldering Ever Happen?

Joe Robertson

Joe Robertson

Member
Just asking, I'm not sure if its possible to modify values in syscon at all without a uart connection and cant really find an answer online, undervolting in software would be awesome.

Maybe it's an area that hasn't been explored too thoroughly since most of the time you only interact with syscon when the console has a problem and can't boot. The RSX voltage can be read in LV1 iirc so who knows? I don't lmao
 
aomsin2526 said:
Of course you can, BadWDSD use lot of these to work but what are you going to do when voltage goes too low and you can't boot anymore?

You will need soldering to recover anyway so it's pointless.
Click to expand...

The RSX's clock speed can be altered very early on in the boot process, meaning if an applied voltage is slightly too low and causes 1701's in the XMB then lowering the clock speed in an overclock.txt file on a USB to something like 400mhz will be enough to reliably save the console and apply an appropriate voltage. CELL undervolts are definitely risky in software tho since we dont have access to its clock speeds at all.

I think there's definitely a use case for RSX undervolts, a lot of PS3's are configured in a way where the RSX runs hotter than the CELL [65nm-90nm/65nm-65nm fats, CECH200x and all PS3's after the 300x with the soldered CELL IHS & 40nm RSX] so bringing down the highest temperature will lower fan speeds by a good bit, not to mention the consoles with tokins and/or the 90nm RSX.

Its a safe procedure if you take your time by lowering the voltage in tiny increments since you'll notice artifacting long before a 1701 so bad that you cant get it to the XMB. The temperature benefits are worth the risk IMO and would be a useful feature for a lot of people, even if it is just the RSX that can be adjusted
 
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