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| Author | 7.6.1 for Quadra 650 (Read 34911 times) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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johnnyboy5000
16 MB  Posts: 23 
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on: February 10, 2007, 08:15
Has anyone experienced 7.6.1 being slower on 68k machines then 7.5.5? Is 7.6.1 more for PPC machines? I currently have 7.5.5 on my Quadra 650 and it works good for the audio/midi app I'm using, Studio Vision Pro 3.5. But since I've visited this site, I'm tempted to upgrade to 7.6.1. |
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wove
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1024 MB Posts: 1363
Reply #1 on: February 10, 2007, 14:42
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Quote from: "johnnyboy5000" Has anyone experienced 7.6.1 being slower on 68k machines then 7.5.5? Is 7.6.1 more for PPC machines? I currently have 7.5.5 on my Quadra 650 and it works good for the audio/midi app I'm using, Studio Vision Pro 3.5. But since I've visited this site, I'm tempted to upgrade to 7.6.1. OS 7.6.1 is more forward looking than System 7.5.5. OS 7.6.1 has more native PPC code and will provide better performance than System 7.5.5 on PPC hardware. For a general purpose machine performing a variety of tasks it makes sense to upgrade to a new OS with a richer feature set right up to the point that the newer OS begins to degrade performance. Studio Vision Pro 3.5 is an industrial strength application. For a computer that is used with a very specific application focus it is generally best to go with the leanest OS that supports the application. I believe that in the case of a Quadra running Studio Vision a very lean install of System 7.5.5 would provide better performance. bill
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johnnyboy5000
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16 MB Posts: 23
Reply #2 on: February 11, 2007, 07:15
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Yeah, I think that was the reason I never got 7.6 back in 1997. Later that year I got a Beige G3 that had system 8 on it, so 7.6 was just an after thought... I still think system 7 is awesome. It's so simple and the machines it runs on don't seem all booged down, unlike machines with system 9.1. That machine takes forever to boot up. Though, 10.4.8 on the Mac Pro is everything I always wanted in a Mac! Except the price, can't beat system 7 machines for that;)
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johnnyboy5000
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16 MB Posts: 23
Reply #3 on: March 01, 2007, 07:01
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I got a copy of system 7.6.1 and installed it on one of my partitions on my Quadra 650. It's noticable slower than 7.5.5. 7.6.1 has cooler features, like a system profiler and support for newer web browsers..
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madmax_2069
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16 MB Posts: 28
Reply #4 on: March 04, 2007, 08:37
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i have 7.6.1 installed on my Performa 475 and it seem's pretty fast. at first i was having problems and they some hoe fixed them self and is now running great. my P475 spec's are Full 040 40mhz (running at the stock 25mhz speed still, soon to be 33mhz or 40mhz it it will work at that speed) 132mb ram 1mb vram 1.2gb HDD Apple PDS ethernet card LaCie external scsi CDRW drive
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johnnyboy5000
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16 MB Posts: 23
Reply #5 on: March 06, 2007, 06:37
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My quadra was kinda broken after a ruff shipping adventure via ups. I took it totally apart, then put it back together and it healed itself. Though the 250mb hard drive died. I had a sonnet 40mhz upgrade that I put on backwards and fried when I took the computer apart and put back together. I got a new over clocking device from Output Enablers http://www.io.com/~oe/. Now my quadra is at 42mhz. I could go to 44mhz, but I discovered that my midi and audio were getting out of sync...
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dpaanlka
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1024 MB Posts: 1646
Reply #6 on: March 06, 2007, 06:41
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How did you manage to put a 68040 on backwards? They have a key pin!!
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johnnyboy5000
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16 MB Posts: 23
Reply #7 on: March 06, 2007, 08:06
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Yup, I found the intructions after I put it on the wrong way and started up the machine. FYI, it won't do the apple chime when it's on backwards..
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dpaanlka
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1024 MB Posts: 1646
Reply #8 on: March 06, 2007, 08:49
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That's really weird because 68040s have one corner with fewer pins - they can't physically fit in any way other than the correct way: http://macfaq.org/img/pinouts/68040pga.gif
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johnnyboy5000
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16 MB Posts: 23
Reply #9 on: March 06, 2007, 20:48
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I think maybe we are talking about two different things. The Sonnet, Output Enabler accelerators that I have are a cover/cap that goes on top of a chip on the mother board, right next to the most inside nubus slot. It fits backwards and forwards, but if it's on backwards, it will be ruined. I didn't take off the processor itself, just the accelerator.
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dpaanlka
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1024 MB Posts: 1646
Reply #10 on: March 06, 2007, 21:21
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I wasn't aware Sonnet made any such product. The only thing I ever heard of was the Sonnet QuadDoubler - which is an entire replacement 68040.
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johnnyboy5000
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16 MB Posts: 23
Reply #11 on: March 07, 2007, 07:36
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It was the Sonnet QuadraBooster 40Mhz. Got it in 1997. It was $49 back then. I think it's been discontinued for a while.
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madmax_2069
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16 MB Posts: 28
Reply #12 on: March 12, 2007, 08:56
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i plan on trying to clock my P475 at 40mhz once i can afford to buy a 80mhz (40mhz bus) PLL replacement. i do have a 40mhz full 040 cpu in it so it should be able to handle being at 40mhz quite well. i was going to buy one of those clip-on oscillators. but wasn't for sure what to buy. does your Mac have any video issues running at 42mhz (like a limited sreen rez, or not booting with video) im not entirely sure if replacing the PLL wil be enough for me to get to 40mhz with out the clip-on oscillator or not
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johnnyboy5000
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16 MB Posts: 23
Reply #13 on: March 28, 2007, 08:04
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Everything is running fine. When I had it 44mhz, every once in a while, the mouse arrow would stay in a spot. Not frozen, because I could move the mouse. It was like the screen didn't re-draw correctly. All that went away when going down to 42mhz.
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