@Doffo and Mark

h264 1080p is certainly doable on a 2.5 or 2.7GHz machine. It's even ok on my 2.3GHz.

What about some examples of these files that wouldn't play at full speed ?

Better make sure you enable cache in mplayer or have sufficient i/o speed of course. These files may not play fluently over a slow smbfs link (for instance... :)).


[ Edited by Fab 05.06.2013 - 06:46 ]

rms,
Quote:

I heard and saw what is required to do it, which convinced me that - if I would own a G5 with liquid cooling - I would leave that to experts.

It is not only about the knowledge. I guess everybody can remove an reattach such cooling, when he takes his time. It is more the detail work and the tools you need.

Basic plumber skills come in handy. You need to know a way to get any air from the system. All connections must be clean and fit perfect. The pipes need to be cleaned from the inside. The cpu mounted cooler need to be cleaned from the inside. You need proper material to seal everything, cooling paste and finally you need specific software to calibrate the system again. Well, this also implies that you had a custom made wrench to reach the places to unmount the entire stuff in the first place.

Same btw goes for the air cooled system. If you remove a broken fan, just replacing it will not helpl. Without running a proper recalibration the system will run the other fans still at maximum speed.

After hearing about what it takes to do it right, I would hand over the system to someone who knows what he is doing and at least did that a few times with his own systems. I am unable to do it myself.

If someone thinks he is qualified, because he dismantled and rebuild a PowerMac G4 from scratch, then he is totally wrong. The G5 systems are not only speed wise playing in another league.

Geit


[ Edited by geit 05.06.2013 - 10:27 ]

Well... I guess it's not extremely difficult to try.
Though Powermacs G5 are another world (yup!) compared with G4 (and with anything else, I suppose..) I'd rather sure to perform all operations.
I have to say I've dismounted two G5 dual 2.7 (one of them is a skeleton now!) to recover parts of one and to clean and check for leaking of the other. You need the right tools, spare parts, ASD disc for calibrate cpu and fans and a whole set of patience. Obviously, reading carefully every sort of documentation that it's possible to find online and go step by step.
Interesting thread about repairing a LCS of a dual 2.7:
http://forums.macrumors.com/showthread.php?t=1109014
Pumps for liquid cooled system (just in case...):
Swiftech 12V DC Water Cooling Pump - MCP350
Viton O-Rings to replace:
Viton O-Rings
Video about how to calibrate a G5:
Powermac G5 fan calibration
and so on.
Yes, this is not an easy operation but I would (and probabily will) do to my G5.

Quote:
i tried the mp4 file that is created on keepvid.com . just picked a youtube video and had the other site save it in 1080p. I will have to try another format. 1080p was playing but desync

geit,
Quote:

May I ask why? I believe on MacOS X the G5 powermacs are NAP, but the G4 ones not.

Quote:

Ok, i'll try that. With a high bitrate, it's still possible some H264 full hd files are too demanding for a G5. To be checked.


[ Edited by Fab 05.06.2013 - 17:48 ]

>> PowerMacs G5 run at full speed. PowerBooks, iBooks and Minis do not.

> May I ask why? I believe on MacOS X the G5 powermacs are NAP,
> but the G4 ones not.

Because on MorphOS, Nap support probably isn't implemented for G5 (yet?).
Regarding Nap support for PowerMac G4 on OSX, the situation is more complicated apparently:

http://www.xlr8yourmac.com/feedback/MDD_CHUD_feedback.html

Hello,

On warm boot the cpu of my powermac mdd is ~34/35°. Yesterady evening I did a try by viewing a 1080p video avi of big buck bunny, prometheus trailer and an other one. The g4 seemed able to play them without any slowing down. After 1 hour the temperature was ~44/45°. I want to clarify that I have not removed the processor card nor changed the thermal paste. So would I have a problem with the cpu sensor ? When I got my powermac mdd it was very dusty. I used an air bomb to clean it, I removed the fan and I cleaned it. When it works I most ear the power supply fans, very rarely the cpu fan.

Someone has told about asd software to calibrate the cpu sensor. Where is it possible to find it ? Is it free or not ?

Brumiga

[ Edité par Brumiga 06.06.2013 - 14:56 ]

Hi Brumiga!
Apple Service Diagnostic (ASD) software is/was only distributed to service providers for repair and maintenance of apple machines. So it's not really a public software... Obviously it's possible to obtain it in a certain way.. though it is really hard!
Moreover one has to use the appropriate disk for his own system.
Here a (brief)list concerning G4 and G5 machines:

Dual Boot 2.1.5 (2003)
PowerBook G4 (12-inch), PowerBook G4 (17-inch), iMac (17-inch 1GHz), Power Mac G4 (FW 800), Xserve (slot load), eMac (ATI Graphics), and Power Mac G4 (Mirrored Drive Doors 2003), iMac (USB 2.0), PowerBook G4 (15-inch FW800), PowerBook G4 (17-inch 1.33GHz) and PowerBook G4 (12-inch DVD)

ASD 2.5.7
PowerBook G4 (17-inch 1.5GHz), PowerBook G4 (17-inch 1.67GHz), PowerBook G4 (15-inch 1.5/1.33GHz), PowerBook G4 (15-inch 1.67/1.5GHz), PowerBook G4 (12-inch 1.33GHz), PowerBook G4 (12-inch 1.5GHz), iBook G4 (Early 2004), iBook G4 (14-inch Early 2004), eMac (USB2.0), Power Mac G5, Power Mac G5 (June 2004 Series), Power Mac G5 (Late 2004), Power Mac G5 (Early 2005), iMac G5, iBook G4 (12-inch Late 2004), iBook G4 (14-inch Late 2004), Mac mini, and iMac G5 w/ALS (Ambient Light Sensor)

ASD Dual Boot 2.6.3
PowerBook G4 (17-inch 1.5GHz), PowerBook G4 (17-inch 1.67GHz), PowerBook G4 (15-inch 1.5/1.33GHz), PowerBook G4 (15-inch 1.67/1.5GHz), PowerBook G4 (12-inch 1.33GHz), PowerBook G4 (12-inch 1.5GHz), iBook G4 (Early 2004), iBook G4 (14-inch Early 2004), eMac (USB 2.0), Power Mac G5, Power Mac G5 (June 2004 Series), Power Mac G5 (Late 2004), Power Mac G5 (Early 2005), iMac G5, iBook G4 (12-inch Late 2004), iBook G4 (14-inch Late 2004), Mac mini, and iMac G5 w/ALS (Ambient Light Sensor

So it's not necessary to have all disks but only the one you need.

MarK,
Quote:
Is it a Pegasos I or II? G§ or G4? How did you get it supersilent? I would like to have my G4 also supersilent.

Quote:

Well, it was in a very expensive tower in it's days, and that's all the magic. My Pegasos was G4. Unfortunately, these towers aren't built anymore, and i haven't seen anything simmilar in these days.

Martin.

So this tower was full of denoising stuff? Like egg walls in a sound studio? I would like to do it in a midi tower if possible.

Quote:

I just put "Apple Service Diagnostic 2.5.7" into isohunt.com and the full 25GB set of discs and docs is the only result.

Intuition,
Quote:

Afaik the full 25 GB set is not necessary since you will going to download disk from early mac to mac pro/macbook pro covering apple machines from 2003 to mid 2010. Of course you can download all of them if you desire.
For example since I have a Powermac G5 dual 2.7 I only need the disk with that machine diagnostic. The problem is... there are three different disks: 2.5.7, 2.5.8 and 2.6.3 with early 2005 models (like dual 2.7) diagnostic. Reading here and there I found my disk is the first one (2.5.7) but I've decided to download all of them just in case....
I have downloaded the 2.5.7 and the 2.5.8 yesterday and tomorrow I will try with the third one.
By the way the full 25 gb set has full documentation inside (from "how to" to "test result guide").

@Mods

Please delete this post.

[ Edited by Intuition 09.06.2013 - 20:09 ]

My G5 2.7 GHz runs mostly around 79,5 C. Even when doing very processing intensive work.

And I will let a professional look at the system and maintain it. Even though it works well right now.

Intuition,
Quote:

I just booted ASD 2.5.7 on my 15" 1.67GHz Powerbook 5,8 and was greeted with a message saying "This machine is not supported". :(

I'll try 2.6.3 and see if that works.

"-1.0 C" on my PowerMac 3,1 G4@400 MHz.

-0.8 C today. Broken sensor or PowerMac 3,1 not supported?

Edit: did a SMU (?) reset on the motherboard, made no difference except for reseting time/date. Still -0.8 and still fans on full speed.

[ Edited by magud 05.07.2013 - 12:41 ]

Powermac G5 2.3ghz DP - 72c constant, not much variation.
Fan design on this model is very well designed, and very quiet.
Love it.

@magud

PMac G4 fans are not SW-controllable (atleast not Quicksilver and older, no clue about MDD/FW800), not sure wether there is a way to get CPU-temp on these either.

Kronos,
Quote:

Thank you. I have a Sawtooth M5183.

Yes, I've have noticed that the chassis fan only has two wires and a sensor directly near the center of the fan.

The release notes for 3.0 tells you this: "Delivers support for 4 temperature sensors in a PowerBook and 1 in a PowerMac.". But maybe not exactly my PowerMac model.

I've cleaned some dust and moved the HDD to the left/front instead of sitting directly under the fan/sensor.


The next step is to replace the chassis fan. Edit: replaced. Slightly better, I think.

Next step: change the PSU fan.

[ Edited by magud 05.07.2013 - 21:45 ]

I've found this link
https://discussions.apple.com/thread/3842869?start=0&tstart=0
about refurbishing a Powermac G5 LCS. Nice idea! I bought evrything I needed to start and did the work! Here some photos (sorry, I did them with my mobile...).

Photo 1
Photo 2
Photo 3
Photo 4

After thermal calibration my G5 double 2.7 run stable at 81.1 C (in this room I have almost 33 C) even playing Quake (HiRes texture) and Duke NUkem (HIRes textures).

For the life of me I could not get that LCS to bleed all the air out.. :S Or manager to force any of it inward. How did you go about it?

Quote:

What would be great and help a lot would be the links where to buy all the stuff. Do you think you could post this?

Regards
Christoph