PowerPC :: 1.25GHz G4 IMac & H264 Encodes?
Aug 1, 2008
I've got a 1.25GHz G4 iMac with 1.5 GB of ram running on Leopard and I'm also an avid anime addict. Lately, more and more anime are being encoded in H264 and my iMac just can't handle it anymore. In some cases, I get sound but no video (processing power is enough for sound, but just not enough juice for the H264 decoding) and the sound plays with no stutter/lag. However, in other cases, everything is laggy.
Either way, is there no way around this? It's not my main system, and I can accept the fact that it's an outdated system, but I've been able to do most things I usually do with it without problems. I'll never get rid of this baby, so I would like to know if anything can be done to stretch it's potential
"you can donate it to [fill in your name here]" because the answer is "no", or "upgrade to something more recent" because the answer is "I already have something more recent".
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Mar 17, 2009
Question to the mac gods...
Recently purchased a new desktop so i wouldn't mind tinkering with my OLD iMac G4 1.25G Is this processor just a over clocked 1g G4? I would like to add more ram and over clock it to 1.5g or higher if possible. Is there anyone who would know how todo this? I assume i would need to change jumper setting within the computer right? What would the setting be?
I mainly use this for music and simple everyday tasks and its soooooo slow compared to my MBP and MP.
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Oct 27, 2009
I have been looking to purchase a iMac G4 1.25GHz 17" or 20" display to use as an iTunes server and play some movies on it. I have a late 2008 (purchased in Oct.) AEBS that I use for my wireless. My question is will the G4 be able to use the wireless capabilities of the AEBS? If not, what will I need for this to be successful?
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Apr 18, 2007
I'm about to purchase one and I keep getting mixed answers. I know there are two slots in this model, but i've been told it holds a maximum of 2GB, 1GB in each, and also that it only holds 1GB, 512MB in each.
Someone that has this model may know the real answer. Keep in mind, this is the 17", not the 20", so it may be different.
Also, are both slots accessible?
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Jun 10, 2010
i just opened my imac g4 1.25 ghz 17" (lamp imac) and found a wire that is taped at the end and apparently not connected somewhere.. as you can see in the pics, the one i'm holding with an orange tip at the tip.. i dont really know the history of this imac.. :c
is this a cause for concern on my part? i'm replacing/upgrading the dvd rom and hard disk.. that's why i saw that wire.
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Jun 30, 2008
so I'm thinking of upgrading to 4GB RAM for my Penryn MBP....and I'm wondering if i can swap my current two 1GB sticks in a 1.25GHz Powerbook G4 that my friend has? I double-checked and found out that the Powerbook G4 could take in 2GB of RAM max.
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Sep 12, 2008
I was wondering if anyone can give me advice on upgrading my old Powerbook G4. I don't have a lot of money to purchase a new MacBook Pro yet so I wanted to max out the current model I have now.
The Specs:
15" Aluminum
1.25 GHz G4
768 MB RAM
150 GB HDD
The things I want to upgrade is RAM and the HDD. Is it possible to go further than 2GB for RAM and 250GB for HDD?
I want to be able to run Leopard on it and even the latest edition of Adobe CS. Hopefully Adobe CS4 when it comes out.
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Mar 30, 2010
Title says it all really, just really slow when firing up safari, wasn't so slow a few weeks ago, not sure if the safari update killed it, or whether it is just the flashy websites killing the CPU, though the usage doesn't look too high, anyone got any other ideas what might be slowing it down, apart from those mentioned above?
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Jan 23, 2009
I have a bunch of videos that I need to convert for internet streaming. Opening them in QT Pro shows that they are .MP4 videos with a video codec of AVC Coding. WHen I tried converting them straight to .MOV H264 I got nothing, but I just tried .AVI and everything was good.
Does anyone have any codecs/applications for converting from AVC to H264 in one swoop?
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Sep 10, 2009
After I installed 10.6.1, my 17" uMBP doesn't play 1080p quicktime trailers if I use the 9400M chip. They play at really bad fps with QuicktimeX player. I use VLC to play them and they play as good as usual. So the 10.6.1 somehow broke the hardware acceleration part of 9400M for me. QuicktimeX player tries to accelerate the playback by hardware, which doesn't work, so it can't play them. VLC does it by CPU and it works.
I didn't have this issue with 10.6.
Anyone else with uMBP can test this out?
P.S. If I use the 9600 GT, they play nicely on QuicktimeX player as well as before.
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Apr 4, 2008
I have an iMac G5. Running Leopard 10.5.2. It's working just swimmingly... except that it won't play back h264 video. I have the latest versions of both Quicktime and VLC. Each app handles the video files differently. Quicktime will give me this message: "The movie could not be opened. An invalid sample description was found in the movie." VLC will play the audio, but not the video. My computer can handle HD playback just fine (I watch most of my movies in 720p AVI files,) so that can't be the problem. This is just driving me insane. Does anyone have a solution for me?
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Feb 19, 2010
I have just been given a MDD 2003 1.25GHz desktop and installed new ram, and HD's into it, powered it up and nothing no chime the large internal fan power's up and a red led on logic board is showing, checked that I have correct type of memory ie PC2700 for this model but that's as far as I get with it.
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Jan 16, 2009
I searched but couldn't find anything that I needed. I picked up some MDDs(dual 1.25 & FW800 1ghz) with bad power supplies and eying up another MDD(Dual 867) which is working. Will the dual 1.25 and single 1ghz processor daughter card work on the previous model? I know the System clock is different and heard about removing a resister on the first gens to 167mhz FSB. I will also try and transplant the PSU too to check to see if my 2 MDDs fully work or not.
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Sep 30, 2006
currently i have a blackbook and imac core duo, 17 ". My macbook beats the imac in everything except graphics. Before i got my imac i seriously considered a g5 dual 2.0, but the money wasnt there. I see an apple refurb dual 2.0 for 1599, and im sure i cud get one a lot cheaper used here or on another board. How much of a performance increase will i see IN APERTURE going to the PM, if any? i would need a good increase to justify it, and eve then im not sure my parents would be ok with me spending a few hundred bucks to upgrade
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Jan 1, 2010
I am doing a presentation for a class thingy in technology about new media and i'm trying to express how when macintosh youtubers started uploading video blogs when they switched to intel/intel made iMacs and about this media blah blah blah. In the pic attached is that a iMac G5 or intel. I see spot light on the top right so it's either running tiger or leopard. I thought I saw a apple remote magnetic thingy on the side. Did the iMac g5 have one?
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Jul 14, 2010
My intel 2006 iMac recently died, and I'm wondering if I could one of the 1GB RAM sticks into the a G3 iMac I own. And more importantly: If I could put the hard drive from the intel iMac into the iMac G3.
The intel iMac was made in late 2006 and the iMac G3 was made in 1999, 1998 or 2000.
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Sep 25, 2008
i am see if it was a good idea to trade my psp with a bunch of stuff for a g4 imac 700mhz 684 ram (or something close to that). i have a macbook but i want a desktop because i want something to run folding at home on and for a place to dump all my stuff. plus i dont play my psp anymore i did for a little while but now it just sets there. o and i was thinking of letting people use it that like theres computer just died or they want to see what a mac is like. so just wanting to see what people thought.
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Dec 15, 2008
My mother's G5 imac is slowly dying. It will not wake up from sleep at all (even hard reset won't work). Her local tech people say it is a faulty logic board. (and the cost of replacement wouldn't be worth it). She can still use it if it never sleeps, which she will do for a while. Can she buy a mini (or I give her mine) and use the imac monitor? She would rather spend as little as possible.
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Mar 17, 2010
I tried to replace my old fan but had some trubble. I also replaced the original HDD with an 2.5" drive. So, it's really quit for now. In fact, I wonder, if it's possible to leave the iMac G4 (800MHZ) without a fan, unless I figuered out my problem with the fan connectors. Ok, I know, the fan inside the iMac is not for nothing. But, is there anyone outside, who uses his iMac without a fan?
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Apr 18, 2006
Original thread:http://forums.macrumors.com/showthread.php?t=174605I just wanted to update readers on how it went (so far)So I was finally given the graphite iMac I found in the tech room (for free ).Good news:We booted it up and it ran ok, it even had OS X on it.It turned out to be the 13gig HD version, which I belive to be the first Graphite iMac (well one can?t have all the luck )Bad news:They didn?t have the keyboard and mouse any more (I borrowed someones at the office to check it out).
I only have wireless keyboard and mice, so I was forced to park it in the basement until I can get hold of some USB stuff.
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May 13, 2006
Just wondering if i can use my Imac G5 lcd as monitor for a pc? I want to learn 3Dmax and need to buy a pc,if i could utalise my Imac G5's display as display for a pc aswell would be a big help not only is it an excellent Lcd, but i could save $$.
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Oct 22, 2006
so as you can see from the tittle of this thread i maxed out my g5 on ram, which is only a total of 2.5 gb but i really like the performance, definitly helps alot with alot more demanding programs. =) im so hapy i finally got this done! any body else have there g5 maxed out?
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Dec 14, 2006
Is there any possible way to add usb 2.0 or firewire to my slot loading G3 iMac 350mhz? I would just rather use my iPod with my mac and usb 1 takes forever to put songs on it. I haven't been able to find anything and as far as I know there is no place for expansion cards, so I'm probably just gonna hear a no back on this one.
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Apr 1, 2007
I have a iMac G5 (Pre-iSight). I just got home and my computer was off, I didn't turn it off and I asked my mom, she said she didn't come into my room. I was posting something on here and my computer shut off on its own. What gives?
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Apr 15, 2007
Is it possible to isolate the LCD from an iMac G4 and use it as a monitor hooked to a Mac mini? The iMac's logic board probably needs to be replaced so I was wondering if I could use it as a monitor to the Mac mini, with some sort of hardware adaptation.
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Apr 19, 2007
my friend bought a new C2D iMac cause he thought his G4 was broken. So I took it off his hands and am trying to get it back to a working state. I'd like to try to restore OS X but if I can't then i'm just gonna install Ubuntu Currently when it boots it just goes to a gray screen with a small folder in the middle with a blinking question mark and Mac OS 9 logo. Next to my 20" monitor it looks like the 17" version and as far as I can remember it has a 1.25ghz CPU.
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Apr 23, 2007
I have a iMac given to me that had an 80 gb hardrive put in and OSX 10.4 installed on it. As you will probably know it wont run DVD's on its drive, but i was wonderin if it would accept an external DVD drive. Would it be fine with it and run smoothly or would it be a waste of money?
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Jun 6, 2007
I have an iMac G4 and it keeps crashing. I've zapped PRAM, bought more RAM, re-formated HDD, installed Mac OS X over and over, I don't know what else to do. Even if I boot it up and let it run, it will eventually crash, but at random times. If I re-boot right after it crashes, it crashes again, but if I wait, it doesn't.
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Jun 13, 2007
would it be possible to solder any wires to get power onto the USB ports on a G3 iMac? I have a blue 500Mhz model, if that would make any difference. the reason that I want to do this is because all of the iPods use USB now, and I would like to be able to charge mine while I am syncing it.
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Jun 26, 2007
I sorta have a project in mind I'd like to attempt, but I'd actually like to know if you think it is possible. I have plenty of computer engineers and computer savy folk around here to help me with it, but i'd like to know if it seems possible before i decide to start. I have an old g3 imac... that worked until the harddrive was taken out that is... haha. I got it from some old school equipment the were getting rid of. The harddrive and ram were taken out before it came into my posession.
Anyway what I would love to do... is basically use the casing and the screen , but swap out the processor to ATLEAST a g4 as well as put in a superdrive, more ram and a bigger harddrive... Really i'd like to put new components into a g3 imac casing. It would be really great if I could get g5 parts in there but I know that's a long shot especially keeping cost low (idealy would be intel parts, btu as they are newer I know i won't be finding a good deal on any scrap pieces from those)............
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