I ordered the MSI 4 GB GTX 680 video card.
If I don't like it's performance in my Mac Pro, I'll slap it into a PC.
It is a great card, you won't regret it. You can turn on every option in XP without fps loss except for those that uses up memory (number of objects, texture resolution,..). But that is only until xp is 64bit.
Since you run xp mostly in BootCamp, you will be very happy with the result compared to your HD 5870.
Goot luck with it.
I've been told this is a kepler based card -- will this work fine with the nvidia drivers on my Mac Pro 1,1? http://www.microcenter.com/single_product_results.phtml?product_id=0394070
Unfortunately the GT 640 doesn't have much power. The people who have it seem to like it. If you are looking for a card for gaming, this is not it.
A couple cards to look at that would work better are the Radeon HD 7770 and Nvidia's GTX 560 SE. They are in the $135 to $142 range according to Newegg.
Both cards get very good reviews.
They are both PC cards so I don't know how well they work (if at all) in a Mac Pro 1,1.
I am more than happy to have someone override or expand on what I just said.
I went ahead and bought (and installed) an Nvidia GTX 680 (EVGA basic reference board model). It worked fine on OSX, so I went ahead and booted up on Windows. The screen resolution and desktop graphics were messed up, so I downloaded and installed the driver package from Nvidia's website. Everything was fine, both on OSX and Windows, but I realized I had no sound! Well, none of the external outputs worked, on both OS. The only output that works is the HDMI sound, on Windows (and yes, I tried changing the output; through the preference pane on OSX, and the Realtek audio manager from Apple's Bootcamp package, on Windows). The only other thing installed in the PCI slots is a La Cie USB 3 card. I've reinstalled my old graphics card, and audio is fine now.
On OSX (with the GTX 680), sometimes the audio outputs wouldn't show at all on the sound preference window.
I'm waiting. I was hoping someone knows the answer as to why you have no sound with the 680.
I hope my 680 is going to work.
Sorry for the late reply, but I've fixed my audio issue by upgrading my Mac Pro 4,1 to 5,1 using the firmware hack from netkas.
Not looking for a hardcore gaming card, mostly just a modern replacement for the 7300 GT. I might play a quick game of D3 or CS:GO at 1680x1050 -- but that's about it. Looking to find out if the Nvidia drivers for OSX support the GT 640. I have a gaming PC -- this is just a secondary machine.
I upgraded to the new 304.00.00f20 driver, and noticed a few things.
1) The flickering box-like corruption in the upper or lower left corner of the screen is gone.
2) CUDA-Z seems to indicate that the card is now running at full PCIe 2.0 speeds.
Performance seems way up in the games I tried this morning (esp. Portal 2) so probably worth installing if you're using a GK104-based card.
I upgraded to the new 304.00.00f20 driver, and noticed a few things.
1) The flickering box-like corruption in the upper or lower left corner of the screen is gone.
2) CUDA-Z seems to indicate that the card is now running at full PCIe 2.0 speeds.
Performance seems way up in the games I tried this morning (esp. Portal 2) so probably worth installing if you're using a GK104-based card.
I upgraded to the new 304.00.00f20 driver after reading your post, Asgorath, and it's improve my OpenCL results in Luxmark (1167->1207 in sala), and OpenGL en Unigine Heaven (1227->1392).
Edit: I realised that I was in the wrong thread (I didn't have a KEPLER card but a FERMI)
SORRY
Help please! I'm already at OS X 10.8.2 through one of the Apple programs and when I try to install the driver, it stops and says I already have an Nvidia driver and won't let me install over it. I know 10.8.2 does not contain this new driver because I still have the blocky artifacts on the left and CUDA Z reports roughly half what you guys are getting on host/device- device/host speeds on my GTX 670 SC.
Any ideas on how I can get this thing installed by overriding or something similar? I have tons of backups but I'd hate to have to roll back everything.
Any help appreciated. Thanks.
Hey, it's still a good thing.
The OpenCl improvement is minor but that Unigine score shows OpenGl improvement or just the 2.5/5.0 GT/s going up if you aren't on one of our EFI cards.
And before someone asks, the new driver holds no magic for multiple displays. Still limited to 2.
You could try "Show Package Contents" on the 304.00.00f20 installer and run the enclosed .pkg directly, though it's unclear that this driver for 10.8.1 will actually work with 10.8.2 (given that's tied to the 10.8.1 frameworks etc). If you did this, I'd strongly suggest backing everything up first so you can restore if things go bad.