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Radeon 7500 & G4 Cube

beachycove

Well-known member
Well, Bunson has got me a-thinkin about a tinker with my G4 Cube again, with his reference to dual G4/500MHz cards in a Cube. I can get one of these shipped on eBay right now for about $35, which is even less than the post referenced quotes.

This, however, leads to other considerations, and first up is the graphics card question. I don't really see any point in shoehorning a dual G4 into a Cube without addressing the piteousness of the Cube's 16MB OEM ATI graphics card. Better to keep it lowend than to put the equivalent of a v8 in a VW Beetle. Which leads me to my question:

I once had a Radeon 7500 for about a year in a G4 Cube, after which service the card became unstable, i.e., subject to frequent random monitor freezes and even blackouts. This behaviour developed suddenly, so that in the end, the card would work for a very short while and then konk out. It had worked fine previously. Given the failure, I replaced it with the OEM card, and stuck the Radeon 7500 in a drawer. Is the Radeon 7500 card most likely dead, as I thought at the time, or is rehabilitation possible?

In other words, did the heat generated by usage fry the thing beyond repair? Is this what happens to an overheated graphics card?

As I say, I have the Radeon 7500 still, but unfortunately, I don't have a G4 tower or the like in which to try it out with the benefit of better cooling. Putting it in the Cube, as some will know, is something of a hassle, so testing it is not the easiest thing in the world for me to do.

The reason for asking is that I think I would not go to the trouble and expense of sourcing a dual G4 if I also need to buy a new graphics card for the machine, as with shipping et al., the two purchases would take me into expenditures of real money as opposed to beer money. I am trying to cut back on the former. Better to keep the Cube stock and live with its slight limitations. However, if all that is needed is a fan, then I think I could rise to that level, as the cooling effects of a fan are certainly compatible with thoughts of lost beer. :lol:

If I thought I could rehabilitate the Radeon 7500 merely with a proper cooling strategy, I think what I might try in the first instance is some sort of cooling base on which to sit the Cube in order to mechanically force (filtered?) air up through the assembly. The fan could presumably be powered from one of the USB ports; leaving the faceplate off the card would also allow some extra air to circulate though the side where the graphics card is located.

Thoughts?

 

H3NRY

Well-known member
First thought: mosey over to cubeowner.com and browse the video card forum. Second, that's the way a GPU that's been running hot seems to die. Unless you had a fan on that 7500, it's probably toast. Thirdly, a flashed GeForce 6200 is pretty cheap and about as good as anything that will run without extreme mods in a cube. Fourth, for most uses, a 500 dual G4 isn't much faster than a single - better to get a fast single than a slower dual G4. Duals do offer bragging rights. Anything you do to a cube pretty much requires adding a base fan, but run at 7V or 5V, it will be quieter than the HD. Even the 6200 benefits from a fan + heat sink, as it gets quite toasty under heavy load such as the Flurry screen saver.

 

madmann

Well-known member
I know under os9 that the dual is not much if any fast than a single cpu but under os x a dual 500 mhz would be like a single 700 mhz

please confirm.

ie my spare cube is complete disassembled with kernal panics over heating cpu i think

michael

 

ppuskari

Well-known member
The G4 cube was AGP right? I can't attest to the AGP version of the 6200, BUT I have done the reflash of a 6200 PCI for my B&W upgd G4 450 machine.. It's got the 66 mhz pci slot for video and it works great! OSX 10.4.9 gives you OpenGL on that card, and I've taken that machine to 10.4.11 with core image support and open gl. The 6200 is a nice fast board for the now older mac and yes as stated above, they are getting very cheap to obtain.

Anyone have any clue on OS 9 video drivers for the 6200? I get 256 colors in multiresolution and that's all under 9 but full usage under OSX.

Good luck!

 

H3NRY

Well-known member
Yes, the G4 Cube is 2X AGP at 100 MHz. I tried a couple of times to flash a PCI 6200 card for my B&W with Sonnet G4 500MHz. Both times, the card worked in the PC, flashed normally, but didn't work in the B&W, and never worked again. Apparently the B&W killed the cards I tried, an EVGA and an XFX. I thought it might be because the PC has 3.3V PCI slots and the B&W Mac has 5V PCI slots. The video cards were keyed for both voltages.

I haven't found OS9 drivers for NVidia. I use a couple of FX5200 PCI cards in the B&W, and they are limited to 256 colors and single resolution under OS 9, though they work fine under Tiger and support Quartz Extreme. They don't work under Jaguar and earlier.

 

MacJunky

Well-known member
I have a GF6200 256MB AGP in my Digital Audio. It will not work with my 10.4.0 disc (it is said that you need 10.4.3 IIRC) but works fine in the mid to later 10.4s and 10.5.

In OS 9 it lets me use thousands of colours and native res but no accel.

 
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H3NRY

Well-known member
You're right, a 6200 needs OS 10.4.3 or later. If yours works like mine, OS9 will give you 256 colors at the native display resolution, no choice. I have a 6200 in my Cube, and it's a very nice option for it.

 
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