Upgraded iMac G4

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Hey guys and gals. Just got an iMac G4 (17' 1.25GHZ) on eBay the other week. It was running 756MB RAM and it ran Leopard quite slow. Just upgraded it to 2GB RAM and its still sluggish. Would it be better to downgrade to Tiger, or is there anyway I can sort of 'tone down' Leopard to work better on my iMac?

Thanks in advance :Cool:
 
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Your Mac's Specs
20" Intel iMac 2.4 Ghz/3G Ram/320HD, Snow Leopard. PBook G4, 1.5Ghz/1.5 Ram/250 HD, Leopard 10.5.6.
Tiger would certainly be much faster, and more ideally suited to that machine perhaps, but I run Leopard on my Powerbook G4 with less ram, and the same processor, and it's fine.
Is it only sluggish for certain tasks, or just generally? It may be a hard drive issue if so.
 
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Too many...
I know the solution...upgrade to a SSHD!
I have a power mac g4 with dual 533mhz, it's sluggish compared to my macbook pro, but not terribly slow. Maybe you should try cleaning up your hdd.
 
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Fletch-
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Well there is a new 250GB HDD freshly installed a couple of days ago, just seems to struggle sometimes :-/
 
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20" Intel iMac 2.4 Ghz/3G Ram/320HD, Snow Leopard. PBook G4, 1.5Ghz/1.5 Ram/250 HD, Leopard 10.5.6.
How fast is the drive?
 
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15" 2014 MacBook Pro, i7 2.5Ghz, 16GB RAM, 512GB SSD; iPad 3, iPhone 6
Well there is a new 250GB HDD freshly installed a couple of days ago, just seems to struggle sometimes :-/

Struggle with what exactly? 1080p video playback? Flash content? Final Cut Pro?

You're talking about a machine that's probably 5 or 6 years old, so it's not going to be the fastest - my Core Duo MacBook has slowdowns with certain tasks and that's the be expected.

Downgrading to Tiger will create more problems that it will solve - too many modern applications won't work on it fully now.
 
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Struggle with what exactly? 1080p video playback? Flash content? Final Cut Pro?

You're talking about a machine that's probably 5 or 6 years old, so it's not going to be the fastest - my Core Duo MacBook has slowdowns with certain tasks and that's the be expected.

Downgrading to Tiger will create more problems that it will solve - too many modern applications won't work on it fully now.

Well just in general, like now there is just firefox,itunes and utorrent open and its really sluggish if I open something else.
 
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15" 2014 MacBook Pro, i7 2.5Ghz, 16GB RAM, 512GB SSD; iPad 3, iPhone 6
Well just in general, like now there is just firefox,itunes and utorrent open and its really sluggish if I open something else.

Open your terminal, and type 'top' and press enter. Cut and paste the results here... it will look something like this:

xxxxxxxxx-macbook:~ xxxxxxxx$ tops
tops [-help] [-dont] [-semiverbose] [-verbose] [-nocontext] [-nofileinfo]
(-scriptfile script_name) |
(find <search_pattern>
[where (<symbol>...) isOneOf {(<match>...)...}] ...) |
(replace <search_pattern> with <replacement_pattern> | same
[where (<symbol>...) isOneOf {(<match>...)...}]...
[within (<symbol>) {...}]...
[error <message>]
[warning <message>]) |
(replacemethod <selector> with <new_selector>
{ [replace <symbol> with <symbol_replacement>]... }
[where (<symbol>...) isOneOf {(<match> ...)...}]...
[within (<symbol>) {...}]...
[error <message>]
[warning <message>])
[-classfile classfile]
[filename ...]
xxxxxxxxxxxxxxx





Processes: 75 total, 4 running, 71 sleeping, 379 threads 12:43:05
Load Avg: 0.34, 0.76, 0.61 CPU usage: 6.84% user, 11.87% sys, 81.27% idle
SharedLibs: 60M resident, 2684K data, 4064K linkedit.
MemRegions: 12178 total, 341M resident, 16M private, 220M shared.
PhysMem: 1197M wired, 560M active, 253M inactive, 2010M used, 37M free.
VM: 54G vsize, 436M framework vsize, 2595347(16) pageins, 258752(0) pageouts.
Networks: packets: 8215017/4387M in, 5472867/223M out.
Disks: 1271504/18G read, 966555/21G written.

PID COMMAND %CPU TIME #TH #WQ #POR #MREG RPRVT RSHRD RSIZE
4456 top 8.7 00:00.48 1/1 0 22 35 696K 288K 1208K
4452 bash 0.0 00:00.03 1 0 17 26 304K 268K 980K
4451 login 0.0 00:00.03 1 0 20 55 284K 268K 988K
4449 Terminal 3.3 00:00.51 6 2 108+ 122+ 2128K+ 8172K 6872K+
4447 quicklookd 0.0 00:00.29 6 2 88 123 6008K 4592K 8216K
4446 blued 0.0 00:00.15 2 1 49 49 868K 1900K 2352K
4399 prl_vm_app 5.1 03:32.20 30/2 1 191 246 62M+ 26M- 268M
4397 mdworker 0.0 00:00.29 3 1 50 69 720K 6552K 2696K
4393 mdworker 0.0 00:00.84 3 1 67 103 4060K 4900K 9448K
4390 prl_client_a 2.1 00:21.10 14 1 197 416 12M+ 43M 45M
4383 cupsd 0.0 00:00.05 3 1 35 58 216K 272K 880K
4355 Mail 0.0 00:13.89 7 2 250 334 7444K 21M 28M
4216 Safari 4.9 05:59.77 13 2 291 2210 86M+ 19M 154M+
3758 activitymoni 5.5 07:02.87 1/1 0 38+ 39+ 776K+ 268K 105
 
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This is what I got:

Processes: 53 total, 3 running, 50 sleeping... 222 threads 18:18:50
Load Avg: 2.52, 2.55, 1.95 CPU usage: 84.85% user, 4.04% sys, 11.11% idle
SharedLibs: num = 2, resident = 46M code, 0 data, 4252K linkedit.
MemRegions: num = 6008, resident = 179M + 21M private, 143M shared.
PhysMem: 142M wired, 453M active, 147M inactive, 742M used, 1306M free.
VM: 4193M + 142M 44302(0) pageins, 22(0) pageouts

PID COMMAND %CPU TIME #TH #PRTS #MREGS RPRVT RSHRD RSIZE VSIZE
733 top 5.1% 0:00.49 1 18 28 476K 200K 1068K 18M
724 bash 0.0% 0:00.01 1 14 19 244K 196K 992K 18M
723 login 0.0% 0:00.03 1 17 49 304K 200K 1056K 19M
722 mdworker 0.0% 0:00.39 3 51 34 616K 1908K 2024K 30M
702 Terminal 4.6% 0:04.41 4 104 169 3196K+ 9504K 9508K+ 173M
701 mdworker 0.0% 0:00.96 4 55 44 780K 2408K 2872K 31M
605 firefox-bi 5.3% 16:43.66 15 237 829 77M- 17M+ 136M 322M
499 iTunes 0.0% 0:13.62 7 285 337 13M 15M 31M 220M
481 ScreenSave 44.4% 25:16.96 2 81 87 1904K 12M 13M 129M
465 DiskManage 0.0% 0:00.39 1 33 39 468K 1580K 1852K 29M
463 CoreRAIDSe 0.2% 0:00.58 1 33 30 268K 396K 1372K 20M
462 System Pro 0.0% 0:04.23 3 108 234 5868K 10M 13M 172M
414 uTorrent 7.3% 13:58.96 9 124 408 8836K 23M 20M 212M
405 usbmuxd 0.0% 0:00.11 3 27 39 332K 488K 1068K 20M
138 pmTool 3.6% 10:19.29 1 24 27 440K 932K 1276K 27M
136 Activity M 7.5% 23:41.41 4 113 211 2900K 20M 11M 183M
 
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15" 2014 MacBook Pro, i7 2.5Ghz, 16GB RAM, 512GB SSD; iPad 3, iPhone 6
OK, so it's not a RAM issue, you have 1.3GBs idle. CPU usage is pretty high on average, uTorrent is a CPU hog, plus has constant disk I/O.

Your screensaver is using half your CPU - do you have a custom screensaver installed?
 
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Interesting side note, the ram being used is around 750MB, the amout that was in before it was upgraded. It's like the iMac hasn't noticed that theres 1.25GB of RAM waiting?!
 
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OK, so it's not a RAM issue, you have 1.3GBs idle. CPU usage is pretty high on average, uTorrent is a CPU hog, plus has constant disk I/O.

Your screensaver is using half your CPU - do you have a custom screensaver installed?

im using screeni so my screensaver is my wallpaper. Turned it off and nothing is much different :/
 
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Well your CPU was definitely being used by Screeni - you had 85% of your CPU being used when you took the TOP screen dump, whereas I had only 7% of mine being used. Incidentally, my machine was running Safari, Mail and Parallels which was running Quicken 2010, Word 2010, Excel 2010 and Firefox.

Your CPU is no speed demon, but it should not be choking at 85% with nothing really going on. After you've disabled screeni, what's the CPU usage?

One more thing... OS X works best if you cache applications (by opening them). It's always going to be a little bit slow when it first opens any application, especially on what is probably a SATA 100 interface and a really old HDD.
 
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It's really fluctuating anywhere between 80% idle to 5% idle, its really weird. I swear it wasn't this laggy before I had it upgraded!
 
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Your Mac's Specs
Silver M1 iMac 512/16/8/8 macOS 11.6
Go into Apple System Profiler 'About this Mac' and see what it says regarding memory. You did of course put Mac compatible memory in the iMac and not memory modules from a PC store?

Next step is to run Apple Hardware Test over the machine. If the original system discs did not come with the machine, go to the following link and download the iMac G4 .dmg file, it is the second one on the list, open Disk Utility, drag the .dmg file to the left hand column, pop in a CD and burn yourself a bootable Apple Hardware Test Disc. Boot by holing down 'C' with the disc in. Keep us posted?

http://www.info.apple.com/support/aht.html
 
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15" 2014 MacBook Pro, i7 2.5Ghz, 16GB RAM, 512GB SSD; iPad 3, iPhone 6
Go into Apple System Profiler 'About this Mac' and see what it says regarding memory. You did of course put Mac compatible memory in the iMac and not memory modules from a PC store?

Next step is to run Apple Hardware Test over the machine. If the original system discs did not come with the machine, go to the following link and download the iMac G4 .dmg file, it is the second one on the list, open Disk Utility, drag the .dmg file to the left hand column, pop in a CD and burn yourself a bootable Apple Hardware Test Disc. Boot by holing down 'C' with the disc in. Keep us posted?

Apple Hardware Test Images

His TOP extract already shows the memory is recognised, it's just not being used. That's why I asked to see it.

His issue is not memory related, it's CPU and possibly I/O.
 
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Hmmmm so what do you think there could be something wrong with the CPU? Hope not :(
 
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Hmmmm so what do you think there could be something wrong with the CPU? Hope not :(

Well nothing wrong with it, other than it's old and (by today's standard's) pretty slow... probably only about 5% of the speed of a 2.66 Ghz i5 in a MBP.
 
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Ok..... slight problem, was playing itunes fine then a grey screen came up saying the imac needed to be restarted. Turned it off then back on again and nothing. The gong noise plays other than that nothing :(
 

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