Memory Maxed on 9600 = unstable system |
September, 16, 2003 1:30 AM |
esmith |
I have determined that for some reason OS X is unstable when my 9600 has it's memory maxed out. It is stable when I have 8 slots filled (1 gig) but when I fill the other 4 slots, it crashes alot. I have switched the ram around... used different slots etc etc etc... Used the ram in my 7500 and Power Tower Pro = both are stable. It is not an interleaved problem.. it seems to be related directly to increasing ram beyond 1 gig... Has anyone else had this same problem? |
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RE: Memory Maxed on 9600 = unstable system |
September, 18, 2003 8:21 PM |
dennis |
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I've been using my 9600 with 12 128MB chips (1.5 GB Total) for several months now, and absolutely no problems. I had problems when I first installed OSX on the machine, but I believe it was related to one of the jumpers on the new hard drive (it also crashed in OS9, but not as often). My machine is: PM 9600 Sonnet 800MHz G4 1.5 GB Ram 75 GB HD Radeon 7000 Dennis |
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RE: Memory Maxed on 9600 = unstable system |
September, 18, 2003 12:03 PM |
esmith |
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I went back to 1 gig... There seem to be big problems with 9600s and more than 1 gig ram... I had to press the CUDA buttom a couple of times to get it to boot again. Thanks for all your help... I'm staying at 1 gig, don't know whether there is any advantage anyways. |
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RE: Memory Maxed on 9600 = unstable system |
September, 18, 2003 4:25 AM |
luiggi.xavier |
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the ramdisk works fine on other macs whih more than 1Gb, it's not an OS limit_ gaugepro seems to be limited as i never had it to run on any mac 1Gb+ (maybe it just doesn't work when there's more than 1 Gb AND all slots are filled) anyway, is there really benefit for the 9600 to get more than 1Gb ?? |
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RE: Memory Maxed on 9600 = unstable system |
September, 18, 2003 1:45 AM |
joevt |
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Maybe it's an OS 9 limitation. Can an app take more than 1 GB of RAM in OS 9? Maybe it depends on how Gauge Pro asks for the RAM? |
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RE: Memory Maxed on 9600 = unstable system |
September, 17, 2003 3:47 PM |
esmith |
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So I put ram into 10 slots and it boots... but Gauge Pro would not want to check the memory... It ran, after I upped the memory, but it would not check the memory... Is this a Gauge Pro Limitation? |
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RE: Memory Maxed on 9600 = unstable system |
September, 17, 2003 10:03 AM |
Michael.Felsmann |
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Maybe it is because my Mac is of 9600 Mach 5 type, but it runs just fine with 1.25 GB, and Gauge Pro DOES test this amount of ram for me. Trying a ram disk does indeed create probs, as I just tested. This isn't a good sign, but I normaly have no use for a ram disk and have (so far) not run into other troubles. Mike |
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RE: Memory Maxed on 9600 = unstable system |
September, 17, 2003 4:02 AM |
luiggi.xavier |
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gauge pro will not run on any computer with more than 1Gb ram, you have to test dimms with 1 Gb ram max. anyway 9600 should not run with more than 1Gb Ram, as it must have difficulties to allocate more : as a test, there is the ramdisk feature in os9 wich crashes the computer when more than 1Gb is installed .. |
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RE: Memory Maxed on 9600 = unstable system |
September, 17, 2003 12:07 AM |
esmith |
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I put all the ram in... and Gauge Pro would not run at all. It crashed upon launch. Took the extra ram out and Gauge Pro ran again... Shifted the ram around into the vacent slots... Gauge pro ran... Seems to be a thing with 1.5 gig of ram... |
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RE: Memory Maxed on 9600 = unstable system |
September, 16, 2003 9:42 PM |
esmith |
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I am now running with all ram slots filled... 1.5 gig on a 9600 with the Sonnet 800 mhz... This is probably the fastest that this machine will ever go. I will run Gauge Pro overnight to see if there are any problems. |
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RE: Memory Maxed on 9600 = unstable system |
September, 16, 2003 8:34 PM |
chibi_delenn |
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If these RAM DIMMs are from OWC by any chance, start thinking about a refund/replacement, ASAP. I had several of their DIMMs come bad out of the box. |
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RE: Memory Maxed on 9600 = unstable system |
September, 16, 2003 7:51 PM |
powderhaus |
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You should also make sure that the your ram is the same speed as the others. when you have 1gb of ram you really have no say in interleaving, unless you change the speed of the ram or the type (EDO or FPM) some computers will take EDO and som,e will not. check your ram types and make sure they are all the same speed, and the fastest they can be because of the G4, it wants to access it fast, so fast RAM will help. |
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RE: Memory Maxed on 9600 = unstable system |
September, 16, 2003 6:40 PM |
esmith |
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I had run Gauge Pro Overnight... the last time.. Anyways I am going to populate the board with the extra ram and try again. BTW these were new RAM chips... Ed |
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RE: Memory Maxed on 9600 = unstable system |
September, 16, 2003 9:23 AM |
Michael.Felsmann |
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I have a 9600 currently running fine with 10 ram slots filled (1.25 GB). This works under 9.2.2 AND X, there is NO 1GB limit on these Macs. As it doesn't work for you, here are some possible reasons: bad dimms, dirty or oxydized slots. Also, every time you change your cpu and/or ram DO PRESS that CUDA switch before restarting! You said you shuffled your dimms around, so bad dimms are less likely. But still, a G4 cpu is more picky on ram than a G3 (it accesses faster). Have all the machines you tested your ram in had the same processor type? As for the (possibly) oxydized slots: press in and pull out a dimm into every slot a couple of times. This can scratch away thin layers of dirt of every kind. I would do a ram test using "Gauge Pro" under OS9. But you have to run the memory test continuesly for SOME TIME. This really puts some stress on the ram. If you get more than 400 test cycles IN A ROW without error, your ram should be ok. (This can be an over-night job...) This way I found an amazing number of dimms that were ok with a G3 but failled after a while (between 200 and 300 cycles in Gauge Pro) when used with a G4. After ruling them out, my Mac was always ok on 9 AND X. Hope this helps. Mike |