More details. Lots of stuff is broken here I think, not just the graphics card.
TKS for all the replies folks!!
i do get what you all are saying but the thing is, I'm having more issues than just the graphics card alone. Also am getting error after error in crash logs about one of the cores. which doesn't sound very good or fix-able if that is what it sounds like.
the graphic card is trash like everyone said. am furious that

even sold this and it was so expensive at the time at that, soooo

!!
for the heat issue though i did put on a very good outside vendor's fan and heatsink and thermal paste. i also put some extra heatsinks on & even installed one of those PCI fan things that fit into a pci slot. it has 2 fans on it, 1 aims at the card full blast & the other is a full exhaust fan that pushes the heat outside the case,
i even have used various hardware sensor monitoring programs that show the temperature all around the computer & really, I have the temps all down including that stupid gpu card into the range it should be in
BUT after all that work it still crashes & dies all the time. Like probably at least 10 full hard crashes per day. and that is the VERY LEAST. Many days it does it much much more, it is just
horrible to use.
if I shelled out for a new graphics card, it'd prob solve some of the problems. but i really don't think that it would end there.
I mean, the thing will crash on its first boot of the day after 10 minutes of checking email; not playing Quake or anything that'd make the gpu need to generate power. Then I restart it and boom, dead again within only a couple minutes of use.
it also crashes or more like just shuts itself down all the time for no reason. the screen will just turn black & thats that. i have to hard reboot. its so annoying & i save my work alot but still loose stuff all the time from this.
Ive gone through & really hardcore tested the memory with memtest and some other things. Them & the Apple Diagnostics CD all do their tests fine & report no errors
there are other problems too with the USB, somewhere in there
I've tested the HDs, reinstalled Mac OSX too many times to count & its running (and crashing) still as steady as always. Thats about all it seems to do steadily these days LOL. Ive made sure not to install any outside drivers or extensions, which I really don't even need these days. but again it keeps dying on me.
SO NOW heres why I am still leaning towards buying a new Mac Pro......
My biggest incentive is that I have a fast-closing window from a friend that can get me a mega hefty discount on 1 machine & a monitor. I'm talkin pretty steep price discount here. I forgot the date it ends but I think it is just after that Apple Developer conference thing. thats also good just in case they update anything I'm buying

I don"t think the Mac Pro is set to get updated again so soon since it like JUST did not long ago.
BUT I could use another monitor as well and was looking at the 30" Apple display. It sure looks nice

But no iSight camera in it?? I want that hopefully, plus that newer 24" LCD display that they pretty recently released. Anyone know how it compared in the real workplace to the older 30" one, besides the size difference; how does that LED technology actually LOOK up close? Does it look better then whatever, LCD is it?, that the current 30" model uses?
Because luckily I can wait till AFTER that Apple Developer thing to see if they finally update the other monitors (maybe all of them to that LED format, and with an iSight built in).
I ask this because the deal I can get is good for ONE "system". They say a "system" is either just the Mac, or the Mac AND Monitor,
BUT only if you buy them together at the very same time. So if I go with just a new Mac Pro only, that is that. I'd have to pay full price for the monitor when I get one. BUT, if it works out as I'm hoping so much

Apple will announce immediate shipping of some new similarly priced monitors; including a pretty nice big one like the current 30 incher; maybe bigger?!
So if I wait until my friend's deal expires, I'm going to be stuck with this crap Mac Pro that at least in my testing & mind, is NOT going to be getting any better & in all likelyhood will just get worse like everything does.
Does this change anyone's mind that commented before with the "just change the GPU" or something like that type of thinking.....now that I hope I explained my situation in probably 2 much detail
I really value MR members opinions & advice. And would be honestly grateful if anyone could share their thoughts and better yet, what they would personally do in this exact situation (I wish he had more than 1 deal "usage" thing that I could share with you guys. but he only gets 1 per year & doesn't want it this year so he's giving it to me, really nice guy!)
mostly just don't want to look back in a month when this computer is all but trash & components to take out, knowing that I COULD have had something newer, hopefully less flaws, & most of all this 1-in-my-lifetime discount offer that I could have used. except by then it'll be expired.
ah well. thanks again for posting the help before. And if I'm not asking too much, & probably I am really --- you have to READ all that ...sorry!!!

---- but if any one here has time to spare, please please I'm begging for all/any suggestions, comments, your thoughts & what you'd do if you were in my shoes right now.
THANK U FOR TAKING THE TIME TO READ THIS & offer up anything you possibly can, I'm open to hearing from anyone

so thank you in advance!!!!