Thanks for the very valuable input, hatter.
Glad to know about the potential pitfalls with the 8800. That's too bad; the 8800 GTS looked very promising, but even the seller warns about possible transport damage "because they're so sensitive".
Not afraid of flashed cards at all. I've been running an nVidia GeForce 7800 GS 425MHz 256 MB "mutant" flashed graphics display card for a bunch of years on a Dual G4 without a single issue.
I am checking on Madvidcards. Thanks for the tip. What are your thoughts on this offering of theirs? :
Nvidia GT120 for 2006 & '07 Mac Pro 1 GB RAM
The hatter wrote:
I stil think you might want to stay with Apple's ATI 5x70
Not sure what that means, "stay"? Staying with the existing stock card is not an option. Photoshop 13.0.5 is already giving me warning messages about its inadequacy. But I realize I have a different card from the one you're suggesting.
Would your suggested "Apple's 5X70" include an "Apple XFX ATI Radeon HD5770 1GB GDDR5 PCI-e for all models Mac Pro 2006-2012"
Sorry, I must be having a senior moment.
Your help is greatly appreciated.
Reviving this old thread just to report that I did go with the hatter's advice and got the Apple 5770 video card and I couldn't be happier with it.
It's performing flawlessly in my 2006 Mac Pro 1,1. Obviously, it has been a HUGE step up from the stock NVIDIA 7300 GT both in regard to graphics and overall performance of the computer. Photoshop 13.0.5 loves it.
Thank you again, hatter!