PowerMac G4 MDD MC7457 CPU Upgrade

In this video, I go over the process of upgrading a dual-867 MHz PowerMac G4 MDD to dual 1.25 GHz MC7457 CPUs. While the upgrade went perfectly fine for the most part, I unfortunately could not get the clock speed out of it that I wanted, due to the slower L3 cache chips used on the 867 MHz CPU board.
All the info I used in the video can be found here: thehouseofmoth.com/ppc-overcl...

[@rahdigga6031]

Hey man, my 2012 macbook pro is still going strong 1 year later after my video chip flash. Thanks a ton! You rock!

[@honda_fanboy]

Finally a new video!

[@AtariForeva]

Listen to that hum, and I complain about the Intel laptop noise ;) I remember MDD at work back in the day.

[@ActionRetro]

Pure wizardry!

[@cedhbudgetbrews4885]

Great video I've been tinkering around with a Power Mac G4 Quicksilver its been fun getting it up and running.

[@tomryan6461]

Lovely stuff! A whole new raft of soldering techniques for me. I'm still stuck on the 'soldering iron in one hand and solder in the other' days and amazed the hot air blowers don't fry the electronics but I guess the temperature tolerance is finely measured out. Intriguing as always Collin. Thank you 🙏

[@Zebra_Paw]

Always love your upgrades!

[@JasonSteel-hk2tx]

Recently got my hands on an 867mhz dual CPU machine. Same one in this video, so this was a pleasure to watch. Love your videos sir!

[@Periimplantar]

Great tutorial, man! Missed you vídeos! Congrats!

[@perpetualcollapse]

Understandable, have a nice day.

[@mdalishahadam2613]

Welcome back Pal .awaiting yr patcher soon. Cheers from Singapore.

[@liaminwales]

Amazing work

[@EduSanchez]

Great!!

[@jozsefizsak]

Fascinating. Maybe you can do something interesting to a dual processor G5 one day.

[@LetsPlayKeldeo]

Love your videos just such bonkers mods !

[@cherenofficial]

Cool and great , as usual , Collin...

[@moetarded7757]

My hero! Dude! Cool. Your a computer surgeon 😷😂!

[@kakirman]

It's so beautiful...

[@watrobkasmaczna1]

True wizard :)

[@Mewtwoisabeast]

very cool

[@mndlessdrwer]

I can easily respect someone who is so fastidious with their use of flux.

[@andycraig7734]

Indubitably! 😀

[@ottf24]

nice job

[@honda_fanboy]

Please make macOS patchers for Big Sur and Monterey as all other patchers are very very unreliable

[@oledcrt]

Did you try opencore? It worked well for me.

[@nobluesky]

That's because non-Metal GPU acceleration doesn't work on Big Sur iirc.

[@oledcrt]

@@nobluesky well that’s a big project but people are working on it.

[@mrcyborg9216]

Yay you uploaded :)

[@Josh.Davidson]

Nice job :)

[@andycraig7734]

I wonder if you could solder bodge wires to those resistor pads and run the wires to a bank of small switches glued to the edge of the cpu board so you can play with different bus and cpu speeds without having to disassemble everything and solder with every attempt at different settings. BTW- a very interesting video! Thank you for sharing.

[@Creativo94]

Great! 💪

[@eileenlucynakurosawa7421]

Awesome job. This gives me hope when M1 Silicon actual Macs could get storage upgrade or repair, maybe RAM upgrade as well. I'm certain that will be possible in near future.

[@AppleReviews]

just find out how many pins Apple M1 has - what they are sizes - and ask DosDude what does mean - and I'll tell you quickly what does it mean - it means - NO CHANCE

[@Josh.Davidson]

I bet the cpu is paired to the system...

[@Appri]

@@Josh.Davidson The problem is the T2 and other chips... they marry the board to the components, because apple is a shit company. I much prefer hackintoshes than macs now.

[@Josh.Davidson]

@@Appri it's for security. Microsoft did that on the Xbox 360 but eventually we figured out how to move the CPUs. Someone will eventually figure it out.

[@Appri]

@@Josh.Davidson It's for both, security and anti- right to repair.

[@kintag4459]

Good luck teacher

[@ggkameleon1]

Hi ! I'm remember my g4 bi-proc I haved upgrade with duet encore Sonnet.

[@snezbo9258]

Awesome video! Was also thinking about picking up a 2010 iMac for $70 AUD. You think I should do it? I’m thinking of upgrading the SSD and RAM too to make it faster. Also want to dualboot Macos Snow Leopard and Sierra with it!

[@dosdude1]

Sounds like a decent deal to me.

[@Madhawa333]

@@dosdude1 hey dosdude,, i have done new modifications about your catalina patcher,,, if you wanna know it please send me your email…

[@GreyRockOne]

Nice! But way too much can go wrong doing this for the first time, all for a G4?

[@danielrhodes7594]

Great Video, what about Power Macintosh G5? I noticed that House of Moth did not address G5 computers?

[@ukmk3supra]

Damn! Thats a box of G4's! Where'd you get so many?

[@supercrazymario404]

Where did you get your 7448s and other chips? I see them on aliexpress though I don’t know how reliable they are.

[@egorfedorovichletov]

Wow

[@DatBlueHusky]

I have a sonnet crescendo G3 L2 400mhz/1mb upgrade card and im wondering would it be possible to get you to upgrade it to a g4? and maybe bump the speed too as well if its possible.

[@dosdude1]

Yes, that should definitely be possible.

[@kevinmccrea1335]

Great video, Mr. d o s do you do motherboard repairs for the public? I can't find no email info or anything so I could contact you that's why I'm asking you through here .

[@dosdude1]

I do; I have an email address associated with UA-cam which you can email.

[@babygluck8445]

Are you gonna make a big sir patcher or a Monterey patcher

[@Handskemager]

Wil those cpu’s work with OS 9.2
And I’m guessing this isn’t possible without a bga rework machine?

[@RedHairdo]

You need to solder better (faster/bigger) SRAM that serves as L3 cache in the processor module. But you already know that...

[@dosdude1]

Yep, just have to find some. I'd like to get 330 MHz-rated chips or higher optimally, but may have to just try the 300 MHz ones that comes on the 1.25 GHz + boards.

[@tomekhornik1831]

Quick question
You don't have any plans for making macOS Big Sur or Monterey Patchers for older macs?

[@j44dge]

Would you be able to point me in the right direction possibly? I have a CPU daughter card from a graphite PowerMac G4. The part number of the daughter card is 820-1040-A. It had a single 7400 450Mhz CPU, and I changed it to a 7440 1.25Ghz CPU. However, it will not post. I'm assuming the resistors for CPU voltage need to be adjusted, but I can't find any documentation online for my specific Mac. Appreciate any help!

[@dosdude1]

The 7440 does not have the same pinout as the 7400/7410, despite having the same number of pins and footprint. Therefore you cannot use a 7440/7445/7447/7448 on boards designed for a 7400/7410.

[@David-gr8rh]

Silly question but can these Mac's run windows like xp or 7. If so how

[@TheHouseOfMoth]

Go to 1.7GHz and slap on some water cooling! ;)

[@dosdude1]

What I really need to do is just finish my 745x-744x interposer design, so I don't have to deal with this external L3 cache nonsense. Then I can have some serious 7448 fun.

[@TheHouseOfMoth]

@@dosdude1 cook me up one of those too? ;)

[@dosdude1]

@@TheHouseOfMoth Sure, just have to finish the design. It's a huge pain to route LOL.

[@MasterSchuster]

Dosdudet1

[@Madhawa333]

Hey dosdude… please send me your email to talk about my new innovations about apfs partition.

[@nish_nabotna]

Go ahead and…
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