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But since I don't have a PCIe G5 to test my SSUBX in, would you be willing to buy one and the custom PCIe adaptor to give it a try yourself? You can get a 256GB SSUBX and adaptor for less than 50 Euros (see next paragraph).
So i can call myself lucky now to have been able to get my hands on even "the real thing" for 50, (another) adaptor included? 🤩

Ok, likely still more than most people would pay for the whole machine today. But it's all for science!
 
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Are you referring to this?

The auction I linked to earlier includes just the SSD. In that case you'll need to purchase the adaptor as well. Just saying. :)
No, referring to this...allready on it's way to me! 😁

But at least i could resist to also purchase the Sonnet, as his second picture was able to destroy the last blinks of thinking, this card could eventually be four-lane too.

...and i really wouldn't have needed the adaptor. The ones i have here to collect dust look much nicer with their black PCB, activitiy LEDs visible from the outside and matching passive cooling.
 
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Two lanes are a limitation of the Sonnet’s Marvell 88SE9182 controller.
 
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In short: first, boot from 10.5.8 (i.e., from an external FW drive or maybe a spinner drive on the OEM SATA bus which you don’t plan to use). Run through the steps needed to get the SL-PPC installer prepped for installation onto a destination location on your G5. Run the installer via that route. If you’re still having trouble, post onto the Snow Leopard for Unsupported PPC Machines (aka, the Clouded Leopard) thread, and I’ll do what I can there to assist. Hopefully, other folks who run SL-PPC on G5s (something I have yet to do personally) will be able to help walk you through the steps.
At least i now know why the Quad hangs with the preinstalled image: "No driver found for plattform PowerMAC 11,2" and after that a long string beginning with SourceCache/xnu/...

But overall i seem to be not enlightened enough for this project. Starting with not even getting anything bootable out of the ISO of the Installer DVD. Leo's Disk Utility doesn't recover from ISOs. And if i mount the ISO and clone it to some physical disk via i. e. CCC, the result turns out not beeing recognized as bootable by the system. 😕
 
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We need to find a four- or eight-lane SATA 6 Gbps controller I guess... or forget about SATA altogether ;)
When i see, what even a twelfe-year-old gets out of PCIe 2.0 via NVMe, i think maybe SATA just isn't the way to go (anymore). But this here is about PPC and PCIe 1.0 (if any).
 
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Nice! ...but, as Joevt reminds "It says 5.0 GT/s which means Thunderbolt 1 is PCIe 2.0.". That's not, what we are talking about here.
Absolutely. But it shows the SSD does in fact use four lanes and OS X’s universal AHCI driver happily talks to it. :)

But on the other hand, the one i get, is 256, which seem to be remarkably faster than the 128-variant.
Mine is also 256GB as seen on the screenshots. I just included a random image from the web to show what the SSD looks like, and it happened to be of the 128GB variant. :cool:

This thing is from Aliexpress. It is some kind of clone of the 500 € HighPoint-card.
Can it also convert PCIe 2.0/3.0 ×4 to PCIe 1.0/2.0 ×16 when using one SSD? If it can and it works in the Quad, this might be an (expensive) way to leverage the ×8 and ×16 slots.
 
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Mine is also 256GB as seen on the screenshots. I just included a random image from the web to show what the SSD looks like, and it happened to be of the 128GB variant. :cool:
Already wondered about the write performance, which could not be as high for the 128GB card.
Can it also convert PCIe 2.0/3.0 ×4 to PCIe 1.0/2.0 ×16 when using one SSD? If it can and it works in the Quad, this might be an (expensive) way to leverage the ×8 and ×16 slots.
Maybe, it can. But i don't like to play around with vital parts of my main productive machine. And i - 100% for sure - will not purchase another one of these for the Quad, as my willingness of spending money in completely pointless and stupid things has reached an actual limit (again). 😉

And even if, it would, it wouldn't "help" anything, as the x16 slot is occupied by the 7800GTX, which also covers the x8. So only x4 slots are available.
 
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And i - 100% for sure - will not purchase another one of these for the Quad, as my willingness of spending money in completely pointless and stupid things has reached an actual limit (again). 😉
I totally get your point and agree. I was only theorising. ;)
 
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I’m just waiting for this thread to settle down with everyone finding what they’re looking for and testing successfully in PCIe-land for AHCI m.2 SSDs. Then, I’m going to re-read the entire thread, start to end, to fully soak in all the amazing things all of y’all are discussing. That’s the best way I’ll be able to glean. Catching this in singular, post-reply-instalments is impressive, but overwhelming for my hamster-wheel brain. :)
 
I’m just waiting for this thread to settle down with everyone finding what they’re looking for and testing successfully in PCIe-land for AHCI m.2 SSDs. Then, I’m going to re-read the entire thread, start to end, to fully soak in all the amazing things all of y’all are discussing. That’s the best way I’ll be able to glean. Catching this in singular, post-reply-instalments is impressive, but overwhelming for my hamster-wheel brain. :)
I can still 100% recommend the Accelsior S as a fairly satisfying easy way out...

...but tomorrow evening i'll know some more. 😎
 
I can still 100% recommend the Accelsior S as a fairly satisfying easy way out...
As far as SATA III is concerned: the Sonnet Tempo SSD Pro must be a four-lane card — it’s said to do 730 MB/s via PCIe 1.0 with two SSDs — and is also said to work with Leopard’s built-in AHCI driver so it should work in a G5 too.
It’s neither bootable in a G5 nor dirt-cheap though.
 
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"The truth is out there."

😇
The truth is, i could have saved some time and money! 😎

So here they are...

SM951_unmounted.jpg


...united and ready for business to torture PCIe 1.0 on four lanes...

SM951_mounted.jpg



...and business has been done! Just forget about the Tempo Pro!


QuickBench 4, Standard Test

QuickBench 4, standard.jpg


QuickBench 4, Large Test

QuickBench 4, large.jpg


QuickBench 4, Extended Test

QuickBench 4, extended.jpg


QuickBench 4, Extended Test, the numbers

QuickBench 4, extended, numbers.jpg


...and even the obsolete XBench

XBench.jpg
 
I wonder if we can figure out how to slim a Leopard partition down to the bare essentials to act as a boot helper disk to enable PCIe booting. i.e. Setting an rd=rdisk#s# to redirect the XNU boot process to the PCIe disk... Hmmm... May be a good idea to look at how XPostFacto does it.
 
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I wonder if we can figure out how to slim a Leopard partition down to the bare essentials to act as a boot helper disk to enable PCIe booting. i.e. Setting an rd=rdisk#s# to redirect the XNU boot process to the PCIe disk... Hmmm... May be a good idea to look at how XPostFacto does it.
https://forums.macrumors.com/threads/booting-from-ahci-ssds-on-powerpc-using-a-redirect.2370850/
https://forums.macrumors.com/threads/boot-leopard-from-pcie-ssd-on-g5-quad.2183549/
 
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