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No problem neckarb I got it fixed seems the power connector for the odd was badly connected on the logic board. Now computer boots up with both 5870s :) the only thing I would like to know is how you removed the bulky front cover from the modular power supply cuz it seems its not able to fully fit back into the odd compartment which will cause a problem as the top bluray drive won't be able to eject properly. Thanks for your help :)

Yeah I had to do the same thing, sorry should have mentioned.
 
Take a look :)
 

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Ok guys so here's the issue. I have two Apple 5870s on hand, a modular power supply on order as well as a crossfire bridge connector. I am taking it upon myself to rearrange the mac pro with two 5870s and test whether or not crossfire will work under Windows 7.


Last year matthew.russo reported that he was able to achieve crossfire with two Apple 4870s with a modular power supply.

After reading this post in another thread :


Taken from this thread: 5870 Crossfire success stories






I opened my system and what was said was true. The space to route the cables to the ODD is too small....much smaller than on the 2006-2008 systems. So after analysing all possible situations, the only viable method to still attempt crossfire is a complete disassembly of the system including logic board removal. Trust me ... it is. I've spent seven hours so far and by now I know every nook and cranny of the 2009 Mac Pro. So I've removed all of the following:
- ODD
- Power supply
- Video card
- CPU/RAM board
- Hard drives
- small fan in front of graphics cards

**** The only stupid thing that doesnt want to come out is the bottom assembly which contains the two lower fans (front and rear). I removed the six screws but it just ain't coming out.... and I know there is a way cuz Apple technicians have to remove it in order to install/replace logic boards. It seems the fans are jamming the part from being taken out. ****

Please I need your collaboration in order to get this last piece taken out and then we are set on testing crossfire.

After seven hours of precision disassembly and analyzing, I must say the Mac Pro has a very tight fit and by noo means is it a highly expandable gaming rig.... but nonetheless for the pride of us Mac Pro users this experiment needs to be done and I need your help to be able to do so. So once again all experienced mac users please help :(

UPDATE: CASE IS FULLY DISASSEMBLED :)

UPDATE 2: PCI POWER CABLES ROUTED PROPERLY. LOGIC BOARD REINSTALLED. RAM CAGE AWAITING REINSTALL ( HAVING SOME TROUBLE ) ... SHOULD BE FINISHED BY TONIGHT :)

UPDATE 3: CASE IS FULLY ASSEMBLED AND 5870s are running fine.... Still awaiting arrival of CF bridge :)

is this the new egg epower ep-450cd 450w atx12/eps12v modular power supply $19.99 (CAN)?
 
is this the new egg epower ep-450cd 450w atx12/eps12v modular power supply $19.99 (CAN)?

Also can u post a youtube vid on how this was done. i have a 2010 mac pro 3.2 5870 on the way and i would like to do the same thing:eek:
 
I would still recommend people use my method, otherwise if you ever decide to remove the card/ replace the PSU/ remove the PSU and replace with an optical drive you have to COMPLETELY disassemble the computer, my method takes 10 minutes and no effort

macprocut.png
did u take the frame off the door to cut? And can u point me out to the smaller cables u bought
 
did u take the frame off the door to cut? And can u point me out to the smaller cables u bought

I did take the frame off the door, it's like 10 screws, very easy, and the smaller cables I bought I got in England so might not be relevant, check eBay, they will have some on there.
 
I did take the frame off the door, it's like 10 screws, very easy, and the smaller cables I bought I got in England so might not be relevant, check eBay, they will have some on there.

will this void my warranty if i try this crossfire set up?(thats if it works, still waiting on ildondeigiocchi results)i have a 2010 mac pro 3.2 5870 on the way.
 
will this void my warranty if i try this crossfire set up?(thats if it works, still waiting on ildondeigiocchi results)i have a 2010 mac pro 3.2 5870 on the way.

In all honesty I have no idea, I bought my Mac Pro second hand so I have no warranty to worry about, the door frame is completely replaceable and i sticking two cards in the computer wouldn't be warranty voiding... So theoretically if needed you could just replace the frame and send it back to apple like that if it ever came to that.
 
what memory should i buy for best gaming performance? 2010 mac pro 3.2 Nehalem 5870
 
what memory should i buy for best gaming performance? 2010 mac pro 3.2 Nehalem 5870

Basically buy the fastest ram you can afford, the most ram you can afford at buy it from a good company Kingston I personally use and would recommend.
 
i see memory with 9-9-9 timing and others with 9-7-9 or something.what is the differance and what is the best for gamimg. (2010 mac pro 3.2 5870)
 
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i think the thread started got hit by a bus UPDATES????????????:eek::(:confused::mad:

So sorry to leave you guys all hanging in the air. Last week was really chaotic with exams and I had no time to play around with the mac pro. However, today i finally had the time to sit down and work things out.

So let's put this in simple terms.... Crossfire works under windows seven. However, I am running into some issues with bootcamp. The minute I install Bootcamp drivers after the restart I get a crash. This applies to 3.0 and I am unable to install 3.1 so I just did a system restore to the point right before I installed BC drivers.

I insalled Catalyst Control Center and the newest drivers and switched on CF and it worked.

I'm sorry I haven't posted any pictures, I've been extremely busy but they shall be posted by mid-week this week along with a guide on how to go about achieving a 5870 CF setup.

Any ideas on how to install Bootcamp drivers without getting a crash saying "Dumping physical memory" ... something about CACHE. It's clearly apple's stupid drivers.


BUT if I can offer a gleam of hope to all users it is this. When PC gamers say Macs can't game... Tell them screw you cuz a 5870 Mac Pro CF system is achievable. :D
 
So sorry to leave you guys all hanging in the air. Last week was really chaotic with exams and I had no time to play around with the mac pro. However, today i finally had the time to sit down and work things out.

So let's put this in simple terms.... Crossfire works under windows seven. However, I am running into some issues with bootcamp. The minute I install Bootcamp drivers after the restart I get a crash. This applies to 3.0 and I am unable to install 3.1 so I just did a system restore to the point right before I installed BC drivers.

I insalled Catalyst Control Center and the newest drivers and switched on CF and it worked.

I'm sorry I haven't posted any pictures, I've been extremely busy but they shall be posted by mid-week this week along with a guide on how to go about achieving a 5870 CF setup.

Any ideas on how to install Bootcamp drivers without getting a crash saying "Dumping physical memory" ... something about CACHE. It's clearly apple's stupid drivers.


BUT if I can offer a gleam of hope to all users it is this. When PC gamers say Macs can't game... Tell them screw you cuz a 5870 Mac Pro CF system is achievable. :D

Any chances to get picture of that apple card, so I could determine if its Atis reference design or "V2".? Or if someone already knows the answer, please tell me. Im planning to do crossfire as liquid cooled.
 
Are you guys doing this mod ONLY to run in Windows for gaming? Through Bootcamp? Or as a VM? Really, really curious. I think it's cools when those of you have the nuts to attempt this type of major surgery...especially those of you with the newer 09/10 MPs. OP, if I understand correctly is modding an '06, is that correct?

Regardless, just curious if I'm the only one wondering WHY in the world you are doing this to a 4-6 thousand dollar Mac Pro...only to game in the Windows environment? Isn't it a bit cheaper to buy a high-end, i7 Windows gaming rig then doing these modifications and the time spent doing them?

Please, don't take this wrong...because honestly, If the answer is YES, I'm going to do the same thing to my early '08 dual quad 3.0ghz MP> I, too, am an avid flight sim dork...been playing MS Flight sim since it was available ONLY on my Apple IIE:) LOL. I think that was before MS had their own, truly available OS...so their releases were to Apple...anyway I digress. My experiences with Flight Sim X from MS and X-Plane 9 have been excellent...and I'm still using an 8800GT that came with my MP. I'm using 16gigs of RAM...does that make the big difference?

I actually sold a quad core (previous to the i3/5/7 series) Intel machine with the exact same 8800gt card...as my MP, in it's current config, ran circles around my Windows box. Literally...a low/slow flight out of a high rez market like Seattle...and through downtown at 12-1500 feet, decent settings (high to very high...and a target of 60fps)...I would draw from 12-16 fps on the Windows machine....same settings, would triple to quadruple the actual framerates on the MacPro. Again...same 8800gt, but double the RAM. An extremely playable 35-60fps, depending on building, ground, and other traffic considerations.

I've been just as happy with the performance with X-Plane running strictly on OSX.

I've not played Crysis...even though I bought it based on hype (I've not unwrapped it since purchase:))...and there are few other games that I've played...however, FSX (and every other generation before it), always tended to push the envelope of currently available hardware...and hardcore sim geeks (myself included) would often buy new hardware on the release of the sim, just to be able to play the damn game! LOL.

Anyway...sorry for the lengthy babble...I guess I'm just curious why those of you that have undertaken this experiment have actually done so, especially if it's just available to utilize under Windows. Why not JUST buy a Windows machine? Is it even faster on the Mac Pros because of the extreme processing power? Dual Quads, Dual Hex's et al? Or do you do it for the challenge?

What happens in OSX? Is it only one card that's being utilized with no issues or bugginess? Again, I'm on an '08...worth on the used market for about 2-2.5k. Starting to get close to the end of the warranty, etc. Soooo...to make a move like this that WILL in fact considerable increase the gaming speed on the ONE real game (MSFSX) that I still do take advantage of....as well, creates NO issues on my OSX tasks (FCP, Premier, PS, Aperture, After Effects, Cinema 4d, Motion, etc). I'm in!!!! However...if there is not a considerable difference in picking up say an "IBuyPower" rig for 15-1700 bucks with the new architecture to play these games and NOT have to modify my MP machine... yet the cost is similar...what's the upside?

Don't you have to buy Mac approved GPUs? Almost a thousand bucks! What about the wires, and new PSU? Time spent doing the mod? (7-10 hours as far as the OP....not sure what you bill out, but I suspect...as most of us are pretty technically savvy, $30 an hour doesn't seem to low or high...) Maybe $300. Time spent trouble shooting? Possibly none, I suppose if done right. Just seems like it's almost a wash??? Am I wrong? Again...are these Procs (Xeon twin quads, etc) that much faster than some of these i7 rigs, etc available on the Windows side?

Really, I don't want to come across as disagreeing with the process, but I'm truly ignorant to the Windows side of the coin and have been for the past 4 or 5 years, since making my switch to Mac. Again, other than the casual boot into Windows to play FSX.

Maybe that's way too many questions...but I guess I'm just wondering if it's worth it for performance sake? Or if it's more the challenge? Or...maybe it's as simple as not wanting two machines in the same area (space consideration)?

Thanks for any insight....I've been carefully considering a bump to the new Mac Pro 12 core...because of the intense video editing and compositing we've been rapidly becoming involved with over the last two years (We have 3 Mac Pros...same config, early 08 Dual 3g Quad cores, 16gigs RAM and 6TB storage, and ALL with the 8800gts. We are carefully considering our next update. To sell all of the MPs as they currently sit. Upgrade a couple to the new nVidia FX (4000?) card....the other to a 5870. OR...we are going to sell all three, buy two 12core and a single Dell Precision (to try out Adobe CS5 with Cuda, and more for me....to be able to get the most out of my flight sim program). However...if this mod can be pulled off on my end, I may keep the last MP (08)....and do this modification, as to have the best of both worlds:)

Thanks for getting this far...to the few that did, I appreciate it!!!! After reading through this thread I have Many Many questions!!!

And, lastly...are you guys talking about cutting a hole in the outside of the MP? The steel? If so, I'm OUT! LOL...can't deface this beautiful cheese grater. I wouldn't feel right:)

J
 
Regardless, just curious if I'm the only one wondering WHY in the world you are doing this to a 4-6 thousand dollar Mac Pro...only to game in the Windows environment? Isn't it a bit cheaper to buy a high-end, i7 Windows gaming rig then doing these modifications and the time spent doing them?
Because having two towers under a desk is annoying, and if you're running an Apple display you then have to mess around with a KVM or constantly switching the cables. Bootcamp is an elegant, single computer solution.

Don't you have to buy Mac approved GPUs? Almost a thousand bucks! What about the wires, and new PSU? ... are these Procs (Xeon twin quads, etc) that much faster than some of these i7 rigs, etc available on the Windows side?
Yes, you need a Apple 5870s. Yes you need wires and a PSU. It's not cheap, and that is what is stopping me from going CF from my single 5870. As for the CPUs, exactly the same units are available in PCs.

And, lastly...are you guys talking about cutting a hole in the outside of the MP? The steel? If so, I'm OUT! LOL...can't deface this beautiful cheese grater. I wouldn't feel right:)
No, you don't cut a hole to the outside at all. Just a small gap in the internal door frame - see the pics previously.
 
Yes, you need a Apple 5870s. Yes you need wires and a PSU. It's not cheap, and that is what is stopping me from going CF from my single 5870. As for the CPUs, exactly the same units are available in PCs.

would prob work with 1 apple 1 pc card. nothing stopping it from.
 
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