I've been searching now for 2 days and i've read so many different things it's ridiculous. All i need is for someone to confirm that YES it is possible to run dual 24" LED cinema displays from a single 4870.
One would hook up to the mini display port, and the other thru the DVI port.
Also, anybody have pics of their dual display setup?
I recently flashed my Sapphire 4870 1gb card and haven't been able to get dual monitor support working in Mac OS. Has anyone been able to get this working on a Sapphire 4870?
It works fine in Windows, not sure why it wont work in MacOS as I imagine the 10.5.7 drivers should be doing all the work.
I have an issue with my 4870 (Mac edition) that has been occurring since day one (when I purchased it last month), but it's not something that happens every single time.
I've run into a problem that the 4870 has trouble recognizing one or both monitors plugged in. If I shut off power to my displayport-connected main monitor, it'll throw the menu bar, all the desktop items, and application windows onto the second monitor (DVI-connected). This also happens when I shut off the second monitor (desktop items and app windows get shuffled to the main monitor).
The other issue is that on startup, it may just be slow to recognize one of them, and the above screen-swapping issues happen anyway, followed seconds later by the screen once again being recognized.
Are there still flicker issues
View 4 Replies View RelatedI recently purchased a second 22" Dell 2209WA to go with my Mac Pro. They are both running from the ATI Radeon 4870 on my Mac Pro (2009 Quad) but the Expose performance seems to be really quite poor. Displaying all the windows is very juddery and not smooth at all. Is that what I should be expecting now? I wouldn't have on a �2000 Machine. Going into Spaces is fine, it's just Expose thats poor.
View 10 Replies View Relatedwhich card I need in order to have dual dual-link DVI?
View 4 Replies View RelatedI have an issue with my 4870 (Mac edition) that has been occurring since day one (when I purchased it last month), but it's not something that happens every single time.
I've run into a problem that the 4870 has trouble recognizing one or both monitors plugged in. If I shut off power to my displayport-connected main monitor, it'll throw the menu bar, all the desktop items, and application windows onto the second monitor (DVI-connected). This also happens when I shut off the second monitor (desktop items and app windows get shuffled to the main monitor).
The other issue is that on startup, it may just be slow to recognize one of them, and the above screen-swapping issues happen anyway, followed seconds later by the screen once again being recognized.
Has anybody else faced this issue? Is there something that can be done? This shouldn't be happening, right?
Has anyone tried hooking up a two 30 ACD's to a 4870 on their MP.. just want to check if there are ANY issues with this setup.
[URL]
In the last 2 weeks before my MP shipped, I've asked 3 Apple Geniuses at Apple stores and Apple Tech support about running dual DVI 23" Cinema Displays with 4870's. They ALL said I would need a second card. When I attempted the install, there were only 2 power cord clips on the back face of the main board. Both being used by the onboard Radeon 4870. What to do next? Another call to Apple support offered me a nice Indian girl who I could not really understand. Finally, I called a local non-Apple shop that I frequent for hardware and service issues. The very nice service tech told me to take the 2nd card back, since that original 4870 will drive 2 monitors perfectly, in my case, with a simple Mini DisplayPort to DVI adaptor for the 2nd 23" display.
how would you install any 2nd graphics card, if a 4870 takes up both power clips?
I know apple says you need two GT 120's for a dual screen, but couldn't you have a MDP for the first screen, then get a DVI to MDP adapter for the second screen? or would OSX not recognize it?
View 3 Replies View Relatedjust came home from Apple Store today with new computer and superdrive, which is not showing up when plugged in. When I put a CD in it reads it for a few seconds then spits it out. I am on the road so getting to an Apple Store will not be easy for the next week.
Info:
MacBook Air (11-inch, Mid 2012), Mac OS X (10.7.4)
Does anyone know of any compadible Dual Layer DVD that work with a PPC G5 Dual 1.87ghz?I tried memorex DVD+R DL and it kept on spiting out the disk
View 1 Replies View RelatedI am looking for a tear down guide for my 4 core power mac. I need some instructions on how to remove the CPU's since I bought this for $100 and found the part for $250.
View 2 Replies View Relatedi replaced the motherboard on my dual 867MHz G4 MDD.the computer turns on now, and i did a fresh 10.4.11 install...but i noticed that it says "Dual 800" instead of "Dual 867" in my "About This Mac" now. i typed "sysctl hw.cpufrequency" in the terminal and discovered that it is actually running at 800MHz, and not 867MHz.
View 8 Replies View RelatedI've got a g5 2.5 dual mother replace to a 1.8 dual g5 tower, nothing happen except all the fans, did anyone know is it work, or my 2.5 mother board also dead?
Info:
PowerMac, Mac OS X (10.4.11)
I searched but couldn't find anything that I needed. I picked up some MDDs(dual 1.25 & FW800 1ghz) with bad power supplies and eying up another MDD(Dual 867) which is working. Will the dual 1.25 and single 1ghz processor daughter card work on the previous model? I know the System clock is different and heard about removing a resister on the first gens to 167mhz FSB. I will also try and transplant the PSU too to check to see if my 2 MDDs fully work or not.
View 3 Replies View RelatedI have a Powermac Dual G5 @2.0ghz, with 8gbs of ram, and 2 1tb drives running the latest version of 10.5. The problem I have is that I have 4 LCD monitors that I was using with my PC. I swapped that out with my mac, and while I am no novice, I didnt take into account that I cant just put any AGP and PCI video card into the system. What I need to know is if I can use two PCI video cards both with Dual Monitor outputs, and if so, which cards should I buy, and where? I found some video cards on ebay that are PCI, and it is quartz extreme compatible, but I am unable to use it with the AGP card already installed. The person selling the cards was unable to answer whether or not two of those cards could be used together. I only have about 75 per card to spend. Please help, I cant go on using this awesome machine with only one 19inch LCD. and I cant afford to buy new monitors
View 1 Replies View RelatedCan a 06 Mac Pro run it?
View 2 Replies View RelatedJust bought a couple weeks ago, 2.8ghz 8-core Mac Pro. My only complaint is the wimpy 2600 XT that it came with.
I know I could put in the 3870 or 8800GT but that would be a step down from my windows pc that I just switched from, which was running 4850.
I've heard the rumors that Mac will soon support the 4800 series ATI cards but my question is will the card work on my current Mac Pro or would this upgrade only be for the new Mac Pros that everyone is guessing will come out in January?
When I say I'd want the power of the 4870, I mostly mean gaming with that card. Now that I've typed this out, it sounds less and less like it would work.
View 3 Replies View RelatedI need some help getting some facts straight. I am considering upgrading from the 4870 to the 285. It's a fine idea except that the 285 is very expensive, but at least I could try and sell the 4870 and maybe get $300CAD for it. Then I thought, what about just getting a second 4870 and crossfiring them?
I have read through a good 3 or 4 threads on these forums about powering the second card, flashing PC cards and working with crossfire... that was a freaking long 3 hours of reading non-stop.
So I have these questions which I hope someone here can answer with reasonable certainty.
1) When doing crossfire, do the cards have to be very similar for them to work? If 1 card is 512 and the other 1GB will there be any advantage over just getting a card with 512?
2) If other cards of the same family work, would a crossfiring of the apple 4870 with a 4870X2 perform similar to 3 X 4870 in crossfire?
3) Could someone explain the cables and/or hardware needed to power the second card from the second optical drive slot? I think the best way to go is 1 cable from each card to the regular spot and 1 cable from each card going to the same connector in the optical bay.
4) Apparently 2 X apple 4870s don't work with crossfire. But does this apply to combining an apple 4870 with an unflashed PC 4870?
5) I thought I read about some attempts to modify the ROM of the apple card to enable crossfire with some success. Is that true and if so where is this ROM and does it negatively impact the apple 4870 in OSX?
6) If have read in the past (I think with the PC 3870s) that if you connect a second unflashed card to an apple card with the crossfire link that the card behaves in OSX (doesn't spin it's fans wildly). I don't need it to do anything in OSX except not blow up, I only care about it working in windows. I'd like to avoid flashing the PC card if I can.
guys would a flashed 4870 from this tutorial
[URL]
I just bought a 4870 for my Mac Pro 1,1. Is there any advantage to keeping the 7300 GT in there, or disadvantage? It does give me a few more DVI outs if I add a third monitor, I guess. What about Aperture or other apps that use the video card - my guess is that it doesn't add anything, but I don't know.
View 3 Replies View RelatedI just installed an ATI 4870 into my 2008 Mac Pro, I need a second power cable to connect the card to the logic board, does anyone know exactly what cable I have to order?
View 4 Replies View RelatedShew... I currently have the 4870 and am looking to upgrade to the 5870 for two reason:
1. I have duel ACD and need the dual mini display
2. I am an avid After Effects guru and need all the punch I can get (yes i know the QaudroFX, but it's just not worth it and they never update them).
How do you all think they will compare performance for price? Any early reviews comparing them both on the PC at least?
Is it possible, I'm considering buying the new Pro, but I just want to know whether I could install more than one Ati 4870 HD graphics card
View 9 Replies View RelatedIt's no big secret that today Apple announced that the ATI 4870 will be available sometime in the near future for the new Mac Pros and some of the other recent models.
So the question is for those of us who are running a single 3870, is it worth dropping it for the 4870 or better to go 2x3870 in crossfire. This is more of a question geared towards Windows usage and not OSX since OSX doesn't support crossfire.
Just a couple of weeks ago I purchased the Mac/PC edition of the 3870 from OWC and added the Accelero passive cooler to it and it's working out well.
I was thinking about buying an additional 3870 to crossfire sometime in the relatively near future solely for the purpose of Windows gaming since you can get PC versions of the 3870 for so cheap.
I'm guessing the Mac edition of the 4870 is going to be pricey so would the dual 3870 option make more sense?
Does anyone game on a Mac Pro with an ATI Radeon HD 4870? How is the performance? Can it play most games? I'd be gaming at 1920x1200.
View 1 Replies View RelatedEver since the 3870 came out last year, I've been waiting to see if anyone was able to dump the ROM from the Mac version and flash a PC version with it. But it seems no one was able to do it.
How come suddenly everyone and their brother is now able to flash the PC 4870? Anyone know what the differences between the two are, that would prevent the 3870 from being flashed successfully?
I have a 2009 - Mac Pro 8 Core with a 4870 Video Card. I know this card uses both the six pin power plugs. I want to add a ATi 2600 Xt card to be able to drive a third monitor and Wacom Cintiq tablet.
Will there be any problems doing this? Does the 2600 just plug into the PCI slot and fire right up? Do I have to adjust the card from 16 to 8?
