On Saturday, March 8, 2003, at 11:46 AM, Bob Robeson wrote: > Hello Everyone, > > I've been away from the list for just about exactly a year. How time > flies. So many changes in a year! > > Anyway, last week I bought a DayStar, XLR8 400 mHz, G4 ZIF processor to > replace the 266 mHz G3 one that I had in my XLR8 carrier card that is > plugged into my S900. The installation of the new processor went > easily > with no problems, however, attempts to overclock the new one over the > 400 mHz were unsuccessful. I was able, using software, to set the bus > speed that the processor uses to access the cache on the processor card > from the default 200 mHz to 265 mHz. > > The instructions that came with the processor said to let it run for 24 > hours to test for system stability or whatever, to make sure everything > was functioning property. They said to give the processor a task such > as running Gauge Pro which will continuously test the memory of the > machine. I set up Gauge Pro and bang... bang... bang... it reported a > multitude of errors in writing and reading my memory. I set the cache > bus speed back down to default but that had no effect, the memory > errors > continued. I haven't had any symptoms of memory problems in the 736 > mb. > that I installed in an interleaved pattern over a year ago. I haven't > had a crash or data loss in all that time. Norton System Works is > running in the background, checking at startup and shut down, and never > reporting problems. > The majority of memory that I have was purchased over a year ago from > Velocity Upgrades when they were having those great sales on 128 mb. > sticks. I painstakingly did the RAM sandwich technique with all of it, > sending back some that tested bad, until I was satisfied that all the > memory in my S900 was solid and good. And now with retesting a year > later, I am getting so many memory errors. > > My questions: Can memory go bad, out of the blue, so to speak? Could > my original testing methods have been flawed to where I missed the bad > memory (I let the Gauge Pro run for thousands of passes)? Could the > memory error messages be related to the installation of this new G4 ZIF > processor? Could the memory be OK and Gauge Pro be hiccoughing? > > How do I begin testing to determine which memory sticks are good and > bad > in order to develop the RAM sandwich outer modules? Do I pull all of > the memory out except one stick and test that, one by one? or do I test > by pulling one module out at a time and testing the remaining modules > as > a group until I get no error messages? > > I'm not going to run any tests until I hear from you all with your > power > brain ideas for me. Unless this list has changed, this is one of the > deepest wells of experience and information available on supermacs and > electronics in general. > > As usual, I appreciate any information, direction, speculation, theory, > or past experiences that anyone is willing to offer. > > Thanks a bunch, > Bob Robeson
Welcome back, I can't give you much info concerning your "ram" we are probably using the same "Velocity" product. I have a GIG loaded on one machine, its buzzing along after about 21 months. Getting their was "difficult" If you followed "all those threads" you know what I mean. That "discussion" was exhausting but very helpful. I just posted to a thread about my XLR8 carrier, I to upgraded the "chip" to 450, tried to "overclock" not successful...I'm still very pleased with its performance, running at "default" 450, Cache at 2:1 (225mhz). I would set the "Cache" to a 2:1 setting see what occurs with that. Do you still have the "266" go back to that see what performance is like. When did you "install" Norton System Works. I would remove it. I on an occasion run "Disk Doctor" and "Speed Disk" and boot from the CD to do it. Very disappointed with that product. good luck, Phillip -- SuperMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | Service & Replacement Parts [EMAIL PROTECTED] | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> SuperMacs list info: <http://lowendmac.com/supermacs/list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/supermacs%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
