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Look for german sellers on eBay - I won't say the nicknames, but you will easily find them.

An example:

$_1.JPG


Previously I got some reference ASUS GTX 980Ti from some private seller from UK flashed with wrong EVGA SC+ rom with OC speeds, core clock was about 100 MHz too high for it - as a result, card was overheating like crazy and had noisy fans. Also there was no way to dump rom from it or reflash it back to PC rom. It showed "ROM reading on this device is not supported". I was able to downlock the core under Windows with EVGA Precision X, but under macOS that was a nightmare.

Now I got original MVC card which works great. Rom revision matches, clocks are fine and it's super silent and cool despite hot summer days.
 
Look for german sellers on eBay - I won't say the nicknames, but you will easily find them.

An example:

$_1.JPG


Previously I got some reference ASUS GTX 980Ti from some private seller from UK flashed with wrong EVGA SC+ rom with OC speeds, core clock was about 100 MHz too high for it - as a result, card was overheating like crazy and had noisy fans. Also there was no way to dump rom from it or reflash it back to PC rom. It showed "ROM reading on this device is not supported". I was able to downlock the core under Windows with EVGA Precision X, but under macOS that was a nightmare.

Now I got original MVC card which works great. Rom revision matches, clocks are fine and it's super silent and cool despite hot summer days.
Yea, you are not supposed to mismatch bioses like that. It would be one thing if it was the same board type like icx sc to ftw. But that's too far. I guess everyone should know to definitely avoid this seller at any cost.
 
PCIe 2.0 is the cMP’s hardware limit. Nothing to do with MVC. In macOS, the Nvidia graphic card’s will neogitiate at PCIe 2.0 Speed with the web driver regardless of flashed or not.

However, in Windows, only the flashed card can run at PCIe 2.0 speed on the cMP.

And I believe the main reason to use a flashed card still because of the boot screen. But not it’s PCIe 2.0 ability in Windows.

Thanks for this tip, however after installing a GTX 1070 Founders Edition on a cMP 2009 (2012 upgrade) with the latest Web Driver, I can confirm that video card still runs at 2.5 GT/s. How were you able to get your card to run at 5 GT/s?
 
^^^^It runs at 5 GT/s. 2.5 GT/s is displayed, but use CudaZ or Cl!ng and you'll see. There are many threads on this.

Lou
 
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I definitely agree with this, especially the part about updating Nvidia Web Drivers. A total pain in the rear end without a boot screen.

Some say not really. I disagree. You need a boot screen if:

1. You update firmware.

2. You ever use startup manager.

3. having the Mac EFI makes it much easier to upgrade Nvidia Web Drivers.

Lou
[doublepost=1546840498][/doublepost]The 2008 model can run up to Mojave using dosdude's patcher, although I think High Sierra is the last OS that runs optimally on it. I know, I have this machine and am running high sierra on it. Your point is well taken, though, since the only officially supported Mac Pro tower for Mojave are ones with the 5,1 identifier. (2010/2012 models) 4,1s (early 2009)will run it if you flash the firmware to 5,1 (technically a hack) I suspect that the 5,1 will be off the officially supported list at the next major OS release, but may be unofficially supported for a release or two beyond that, depending upon how much hardware requirements change.

QUOTE="kingtj, post: 26286606, member: 23140"]I came *really* close to buying one of his cards for a 2012 Mac Pro tower my work owned, that needed some upgrades to keep it viable for the video/photo editing work people were using it for. (It reached a point where it was just sitting on the desk, unplugged, because our users had better luck using their modern Macbook Pro laptops for the work than bothering with it.)

Ultimately? We just decided to "end of life" the Mac Pro instead. By the time you looked at the fact it really needed more RAM, plus the cost of one of these flashed video cards (which would already be used and with a really questionable warranty if it failed), it just didn't make good financial sense. The base model 2018 iMac Pro was regularly on sale for $1,000 off at stores like Micro Center, making it a far superior investment. (Will work with new OS X releases for the next few years without any hassles. New warranty coverage. Really nice display panel. Newer generation of processor. Modern set of ports.)

It's sad to see the classic Mac Pro towers go obsolete, but really - their days are numbered at this point. I'm using a 2008 model right now to write this message -- but that's only because the "geek" in me wanted to preserve this one from going in the trash. Even with hacks, I can never use an OS X release on it newer than El Capitan -- and I have to keep hiding a security update patch that breaks the hack that keeps it going. It's not practical anymore, except as a curiosity.[/QUOTE]
 
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