Just caved and bought a G5

http://cgi.ebay.com/ws/eBayISAPI.dll?Vie...em=220379705119

thats my new baby right there.

Ok now for discussion.

I wanna upgrade the video card to something with 512 MB of VRAM which card can I flash to use with this G5?

ATI x1900?


also I have hear rumors of G5 liquid cooling systems leaking, does apple still fix these under warranty?

There is a 64KB Mac ROM for the Radeon X1900XT, it looks like a great choice. As for coolant leaks, you should read this page carefully:
http://www.xlr8yourmac.com/systems/G5_coolant_leaks.html

where can I find this rom?
I saw a thread on this somewhere but it was for the macpro so it won't work for me. There is a G5 edition of the card sold by ATI but I rather just flash a PC version so I don't have to pay so much.

I didn't mean to mislead you, the ROM I was referring to is for Intel-based Macs and it seems you're getting a PPC Mac??? If that's the case your flashing options are very limited. The best flashing forums went offline before PCI-e cards became the norm. There are lots of AGP ROMS available but I don't know of any reduced PCI-e ROMS for PPC 512 MB cards. You might want to max out your RAM and try your G5 with the GeForce card for a while before trying to upgrade the video card.

I plan to max the RAM this summer when I get a job
RAM is pretty cheap for this thing and it can take 16 GB which hopefully will be enough for me

ATI make a G5 Edition of the X1900

which means there has to be a ROM out there that someone pulled off the G5 Edition. the G5 I bought is only 3 years old which means its a 2006 model meaning that it is one of the most power G5s apple has made (the quad core one being the fastest). So its gonna be able to have lots of card options as long as there are ROMs

http://ati.amd.com/products/radeonx1900/RadeonX1900G5/index.html

it exists now I just need a ROM and I can just buy a PC one and boom.

I have a 6800 Ultra which I might part with. Make me an offer if you like......

[censored]" target="_blank">http://cgi.ebay.com/Mac-ATI-Radeon-X1900...%3A1%7C294%3A50

its a little pricey but its the card I want, though I would much rather have 512 of VRAM.

Be careful, make sure the seller will guarantee the card will run in a PPC (non-Intel) G5.

i know it will work because it says its only compatible with dual-core and quad-core G5s which mine is a Dual-core.

My mistake, the 6800 I have is an AGP card, but it is a genuine Apple one if anyone else might be interested.

The 2.3 is not watercooled so coolant leaks are not something you need worry about.

....not yet! mod that biatchhhhhh!

just got it today. it is water cooled it has a radiator and pumps in it and the whole shabang.

One more thing.

does anyone know the pinout fo the PSU because I don't have the G5 C19 AC power cable so I'm modding a standard AC power cable to work and I wanna know which pin is hot and which is ground etc.

UPDATE:

my modded power cable works!!!!!!!
hahahahaha Engineering power!!!!!

ran into some hiccups when booting this machine.

1. no OS
2. had to clean the contacts on both ram modules to get it to boot.

other than that smooth sailing and pure speed!!!!

Um. I'm pretty sure the only water cooled G5s were the Dual 2.5GHz, Dual 2.7GHz (both single core, dual CPU) and the Quad 2.5GHz (dual dual core CPU). The service manuals confirm that I am not going insane. Are you sure you have a dual 2.3GHz and not something quicker?
PM me the serial and I'll look it up for you......

I want to say watch out for that because i made that mistake, make sure yours is a late 2005 model just in case

Mine is a Late 2005 model Dual-Core 2.3 GHZ liquid cooled Powermac G5.

It has the 16x PCI express slot and architecture

up to 16GB of RAM.

there is a radiator in there.

[censored]" target="_blank">http://cgi.ebay.com/Mac-ATI-Radeon-9800-...8#ht_500wt_1182

<[censored]" target="_blank">http://cgi.ebay.com/Mac-ATI-Radeon-9800-...8#ht_500wt_1182