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It is looking to me like vias could fit in the middle of 4 pads, but I am new to this so not really sure. How many layers is this? Since a large number of these could fit on a single panel, wouldn't that save a significant cost? Anyway, it's fine if it's not economically viable, I still want...

Oops to answer one of my own questions, pretty sure the 750FX lacks pins for communicating with an external cache. So may as well just remove the cache chips from the board?

1GHz 750GX has a typical power draw of 8.3W @ 1GHz. 1GHz 7447A has a typical power draw of 16W @ 1GHz 533MHz 7410 has a typical power draw of 5.3W @ 500MHz I am also curious what (all the variants of) a ZIF socket will deliver. I would be worried about any G4 other than a 7410. Not sure what...

test

Looking to develop some midrange affordable ZIF upgrades. Seems like there might be a market for upgrades in the $100-$200 range. Will probably try to make 533MHz 7410s, and 733MHz 750FX. I mostly just want practice in PCB CAD software. I have been a technician for going on 20 years, doing a...

is 66MHz really the magic number for 9x? One of these is on eBay right now, and though it is rated as a 500MHz, the chip on it appears to be rated for 450MHz. I am guessing Sonnet certified it reliable to run at 500MHz. But if used in a 60MHz bus Mac (which is less than 66MHz), 9x would put...

So I'll start out by saying I don't actually have a question. Just put a lot of effort into finding ATX PSUs with high amp 5V rails, and figured I'd share my findings. That said, any additions to the list would be highly appreciated. My motivation wasn't to replace a dead PSU, rather, to free...

Also, how does the auto-configure on the Sonnet actually work? I think those G4s had a max multiplier of 9x. Say it's a 500MHz Sonnet. If I put it in a 50MHz bus machine, guessing it will auto-configure to 450MHz (9x). If I put it in a 60MHz bus, guessing it would auto-configure to 480MHz...

Looking into purchasing a ZIF upgrade or 2 for overclocking testing, but finding caveats with various upgrades out there. The Sonnet Encore G4 ZIFs apparently auto-configure their multiplier, and ignore any jumper settings. Is there a way to override this? I'd rather use the jumpers on my...

I think this table is imprecise (I could be wrong). I have found a link which suggests that within the PowerCenter series, there are 2 different mainboards used; "Catalyst", and "Catalyst Plus". Here is the link: https://www.macgurus.com/products/ram/mgpccramspecs.php So it seems to me, the...

I've got one of those XLR8 ZIF Carriers with a bunch of dip switches for manually setting the bus. I currently have 4 motherboards I am going to push the bus in to see how far they'll go, but I sure would like to compare them to a Power Computing unit. Apparently, there is a reasonably high...

Here's the link: https://www.macgurus.com/products/ram/mgpccramspecs.php " Note: Power Computing has modified and enhanced PowerTower and PowerCenter 166/180 MLBs (the so-called Catalyst Plus) to run at a maximum of 60MHz. Enhancements include ASICs and L2 cache certified reliable beyond...

Which Power Computing models are (basically guaranteed) 60MHz bus capable? A 60MHz bus Power Computing model is one of my grail machines. There is a Power Center 120 on eBay right now. Is this model 60MHz bus capable? According to everymac.com, the Power Center 180 has a 60MHz bus, all Power...

Amazing info. Do you remember what speed 60-80% of the Tsunamis would run at? 56MHz? Yes I like weird numbers. Were you able to try 50ns memory? Pretty sure those exist. I'll probably try things like looking for hot motherboard chips, and putting heatsinks on them and maybe the VRMs.

My motivation is, I want to experiment with overclocking the bus speed in 7500-9600 computers. When I was younger, I always wanted a Power Computing unit with 60MHz bus. When I got a beige G3, I ran the bus at 83.33MHz, and it worked perfectly. When I got a Gigabit Ethernet G4, I ran the bus...

Well, I think I found the answer at the following link: https://www.oempcworld.com/support/mac_memory_explained.html " 4400 takes 3.3V and supports EDO 5500, 6500, and PM 6400 take 5V and support EDO 7300 thru 9600 take 5V and will accept EDO modules, but they will operate in FPM mode 7200...

Are any Macs from the 7500 thru the 9600 capable of operating EDO memory in EDO mode? If not, do installed EDO modules simply operate in FPM mode? If they can operate in EDO mode, and you mix EDO and FPM memory, will the EDO capable modules still operate in EDO mode?

This is all good info. I am trying to avoid cutting plastic in case I or someone else ever wants the case in it's original form. I *might* consider doing a simple drill hole for small ports like ADB or maybe ethernet, but I definitely don't want to cut out a SCSI or VGA port out. Do drills...

Is there a centralized location that shows motherboard / case compatibility? My current situation is I am looking for a case for a 7600 motherboard. Will 650, 7100, 7200, 7300, 7500 all work? How about 800, 8100, 8500, 8600? 9500 and 9600? G3 desktop, G3 tower? I am curious about 68k...