I added a geforce 6200 to my cube to replace the Radeon 7500 I had in there, did it more for the Core Image support
You don't have more than one, by chance, do you?![]()
Can i reopen this thread from here?
I want to upgrade my cube 450 MHz. The links to cubeowner seem to invalid .
What do I need to upgrade my cube to let's say a G4 1,25 Ghz?
(Single or dual)
Is the following any good?
https://www.ebay.com/itm/152436690718
What do I need to upgrade my cube to let's say a G4 1,25 Ghz?
If it were to even work. As far as I know, the CPUs from regular PMG4s can't be swapped into the Cube, at least not the Quicksilver and MDD ones. The 1.25GHz is an MDD one, so that's never even going to work at all.G4 Cubes have a 100MHz FSB (like the Sawtooth) so 1.25ghz upgrades aren't possible (with stock apple hardware at least) as far as I know. Not sure about heat from such a fast CPU either. 1.25GHz CPUs are only found in 167MHz FSB Macs so good luck with that... (Kinda sad how CPU upgrades are such a pain in the Mac world)
The G4 cpu speed is set as a multiple of the bus speed. The cube has a 100MHz bus, so the stock 450MHz cpu is set at 4.5x with a set of jumpers called pll_cfg. The 533MHz cpu is from a machine with a 133MHz bus, so if you put it straight into a cube it would run at 400MHz. Make sense? So you want to change it from 4.0x to 6.0x, and if you google something like "G4 pll_cfg" you can find stuff like this:
http://www.xlr8yourmac.com/G4ZONE/sawtooth/SawtoothCPUdesign.html
http://power-mac-g4.com/g4digitalaudioclockup.html
I have a friend with a dual 1.6 CPU in a Sawtooth that he might sell to you.Makes sense with bus speed and clock speed.
Having said that, do I then also need to replace my 1,5 Gb Ram with 133 MHz Ram?
My G4 Cube runs a (normal, not a special one for the Cube) Sonnet Encore ST G4 at 1.8 GHz. The catch is the VRM was also upgraded to accommodate this, and those are just as rare / expensive if not more so than the CPU upgrades themselves. If you don't also upgrade this, you take the risk of overloading the original and that's one reason why there were never dual CPU upgrades sold for the Cube (another reason is they won't make good contact with the Cube's heatsink, although I have seen workarounds such as this one and using a copper plate).I have a friend with a dual 1.6 CPU in a Sawtooth that he might sell to you.
I'm 99 percent sure the CPUs on the Sawtooth and the Cube are interchangeable. See if you can get a fan from Sonnett, or my friend might actually still have one.
I just converted one of the 533 cards for use in a cube so I took some measurements while I was at it. It would boot at 650 but was not stable. I didn't tweak any voltages. The cube running the stock CPU (28v input, 7400 at 450MHz):
0.8A idle
1.5A max load (power fractal)
7410 at 600 MHz:
0.8A idle
1.2A max load (power fractal)
A few benchmarks at 600MHz:
nbench:
MEMORY INDEX : 5.759
INTEGER INDEX : 5.040
FLOATING-POINT INDEX: 5.975
TenFourFox45 javascript:
Richards: 1392
DeltaBlue: 2365
Crypto: 1167
RayTrace: 3493
EarleyBoyer: 1780
RegExp: 204
Splay: 1149
NavierStokes: 1289
Score (version 7): 1280
Powerfractal w/262k max count:
2563Mflops
SkidmarksGT
54 71 58
geekbench (because for some reason this terrible program is popular):
425
Did it run stable at 600? I have acquired a 500 card:
Apple Power Mac G4 Processor Module for 533Mhz Digital Audio 820-1175-A 661-2403
Ouch! That'll run at 400MHz as the Cube has a slower FSB (100MHz vs 133MHz). You'll have to change the multiplier to get full speed. Ask people around here for instructions but it needs soldering :/
Yes, flyrod in this forum offered help with soldering as my soldering skills are suite bad
My G4 Cube runs a (normal, not a special one for the Cube) Sonnet Encore ST G4 at 1.8 GHz. The catch is the VRM was also upgraded to accommodate this, and those are just as rare / expensive if not more so than the CPU upgrades themselves. If you don't also upgrade this, you take the risk of overloading the original and that's one reason why there were never dual CPU upgrades sold for the Cube (another reason is they won't make good contact with the Cube's heatsink, although I have seen workarounds such as this one and using a copper plate).
Did it run stable at 600?
Yes. It runs perfectly stable at 600. I even stressed it as much as possible and let it get pretty hot, as I was just running it with no fan and only the copper heat spreader attached to it (not installed in a cube with the main heat sink contacting).
Powerlogix (NewerTech) made a variety of cube CPU upgrades (single and dual) that were powered by the 28v main input instead of 5v through the VRM. I think they called this a "VRM bypass" and some of their other CPUs had a 12v molex for power which is basically the same thing. In fact most of these cards can be installed in cubes with some mods. For example, any of the CPUs that look like this will work in a cube:
http://www.ebay.com/itm/162422268410
You can run dual 500's or a single 1GHz with some cooling upgrades. A base fan and VRM relocate and/or strategic heat sinks on the VRM works for this. Sanding or machining the cube heat sink flat helps too. See my posts above. I ran a dual 1.92GHz 7447 CPU for a number of years. This was the most extreme in terms of heat. Now I run a dual 1.8GHZ 7448 CPU which is much cooler, but still requires a fan. The 7410 at 600MHz is a nice, cheap, easy boost and can remain fanless. In fact they run cooler than the original 450. With a SSD the cube can be completely silent.
Jumpers are pretty simple to set and I don't mind doing it for people, but there's shipping involved and I'm not set up to test every possible configuration.
[doublepost=1531229243][/doublepost]my cube is finally running on a 600 mhz CPU and a SSD from OWC, the real trouble with the SSD was finding a IDE --> SATA converter that works! (link can be provided)G4 Cubes have a 100MHz FSB (like the Sawtooth) so 1.25ghz upgrades aren't possible (with stock apple hardware at least) as far as I know. Not sure about heat from such a fast CPU either. 1.25GHz CPUs are only found in 167MHz FSB Macs so good luck with that... (Kinda sad how CPU upgrades are such a pain in the Mac world)