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Ultimate Thread: 4890 in Mac Pro

No need to chicken out - cooling wise, the cooler will go to 50%, 70%, 100% should the temperature rise. If you notice the fan spinning and causing alot of noise, use the Catalyst control center in Windows to monitor the exact speed and card temperature. The difference with the Accelero is like 20%, so your card will at most sound bad at 100% load, but certainly not fail.

The problem with too high clocks is more the fact that you will get artifacts and graphic glitches.

950 is a little pushing for the normal Sapphire. 900 is safe, and is what the Sapphire OC card is using. I'm going to make such a ROM later.
 
Cindori said:
No need to chicken out - cooling wise, the cooler will go to 50%, 70%, 100% should the temperature rise. If you notice the fan spinning and causing alot of noise, use the Catalyst control center in Windows to monitor the exact speed and card temperature. The difference with the Accelero is like 20%, so your card will at most sound bad at 100% load, but certainly not fail.

The problem with too high clocks is more the fact that you will get artifacts and graphic glitches.

950 is a little pushing for the normal Sapphire. 900 is safe, and is what the Sapphire OC card is using. I'm going to make such a ROM later.
Click to expand...

So using the 950mhz OC ROM will result in a noisy noisier card during load and corrupt gfx?
I'm quite please how well the card performs with the 850mhz ROM...Crysis has very decent framerate...it crawls on my Phenom II X4 955 rig with dual GF 8800GT OC in SLi :)
 
Cindori said:
I have the sapphire non-oc. It runs great in wow and osx with the OC rom. But I haven't stressed it yet in like Crysis. But there should be no problem to go ahead and try the OC rom for yourself. Should it be too high, you will start getting artifacts a long time before the card is in any danger.
Click to expand...

I can second this also. Im not sure here are my results after playing Heroes of Newerth for 3 hours.

clock.jpg


also no noise whatsoever.
 
Hello guys, could someone help me finding a good 4890 in Italy? (or that can ship to Italy, of course)

I would like to flash it and install on my Woodcrest Mac Pro (1,1) 3GHz and connect to an Apple Cinema Display HD 23.


Thanks :)
 
Alot of ebay users ship worldwide. Look for a card that looks like mine in the first post.



@Pressure: The Sappire runs 850 standard. 50Hz is a good clock to be 100% safe. 100MHz clock is pushing it for these standard cards. If you are looking for more, try a Asus card, up the volt in RBE and you'll hit 1GHz. No-one has tried one yet, though :)
 
Cindori said:
@Pressure: The Sappire runs 850 standard. 50Hz is a good clock to be 100% safe. 100MHz clock is pushing it for these standard cards. If you are looking for more, try a Asus card, up the volt in RBE and you'll hit 1GHz. No-one has tried one yet, though :)
Click to expand...

Your mileage may vary but my Sapphire reference design Radeon HD 4890 hits 1Ghz Core and 1.1Ghz memory.

Of course I may have just gotten lucky here but I have seen several users getting the same without a lot of effort.
 
This one looks like yours... but it's not the same card (this one has 2 DVI output and one HDMI and has got a different cooler design).

I was wondering if there is a way to buy a 100% working card (ie: the same card someone else bought :)). Item and EAN codes are good for this?

I've found this one too. Should I care of built-in connectors? DVI, HDMI, S-Video... damn :D
 
None of those cards look like mine :D


@Pressure

thats funny... have not seen a single report of the sapphire 4890 going that high without issues. did you try furmark?
 
@ Cindori

Is your card like this or this?

I'm finally finishing to read this tread and since I occasionally need dual video (one DVI Apple Cinema Display 23", sometimes I connect an analog TV trough a DVI to S-Video adapter... soon I'll but an HD LED TV so I'll occasionally need dual DVI connection). Correct me if I'm wrong: there is not a 4890 that works with 2 displays; does the Apple 4870 works with 2 displays? (using the right mini-adapter of course)
 
Guys, dual displays is working, I said so on the previous page. The main post is also updated; go check it out.


And yes, both of those are my card.
 
Got some minor artifacts when setting the GPU clock to 950mhz with ATI Overdrive and used Furmark to test so I guess the components on my card isn't up to the task of that clock speed?
Same thing happened when I set Mem clock to 1090 or higher.

GPU @ 940mhz and Mem clock @ 1080mhz seem solid though..running it constantly now in winblows 7 x64
 
Cindori said:
@Pressure

thats funny... have not seen a single report of the sapphire 4890 going that high without issues. did you try furmark?
Click to expand...

No, I used to play games with it. Not looking at useless programs that manages to bypass the failsafe on certain graphic cards (especially the Radeon HD 4870 and Radeon HD 4890) ;)
 
So,this retard has one question : Does the flashing work under 10.5.8?

Just asking this because most of the peeps seem to be under snowleonowadays.

Finally found one SAPPHIRE TECHNOLOGY RADEON HD4890 - 1 GT DDR5 - PCI-EXPRESS 2.0 for 159€s and now thinkin pulling a trigger here.


As my optical bay is a bit crammed now (1HDD there) and I have allready leached the molex cable for dual sata power cable, is there any other ways to get power to the ATI?
There are apparently 2 6pin powerslots in the MP1.1 mobo,is that right? Just beside the ODD sata ports? But does it need some hard-to-find-connector or what?
The extra problem is that the sata cabling for the optical bays HDD is a bit blocking one of the slots...

Sorry for asking dumb questions.Just wanting to be sure before I burn the money and start to tinker around..
 
It should work np, as for the power... already been covered in this thread. get cables from ati.v
 
I've got some original cables, I'd rather sell them in sweden/scandinavia though....
 
Ok,so the sapphire card would have 2 week delivery time but i found a this at a local store

ASUS Radeon HD4890 1GB GDDR5 EAH4890/HTDI/1GD5 / 90-C3CGY0-L0UAY00T

P_500.jpg



Go or a no go?
 
Well,being the dumb *unt that I am,walked into the store and asked questions about the asus card...
They couldnt say a damn what kind the power connector layout it has.
But in the end I walked out of the store with the card and a plastic bag full of different types of powercords. And 14 day money back guarantee...



Now sitting here with the open macpro and pondering.
The card has a 8pin and a 6pin slots in the card. Uuh.
And the cables that I thought would fit the MP mobo and,well,obviously they dont fit.
So now it is time pry oben the optical bay and check out the situation on the
4-pin cabling there. Problem is that I allready have HDD there and a optical disk.
Was thinkin of removing the optical disk because I have a spare FW DVD drive hanging around in the house for emergency bootups/installations.
That way I might have enought juice out of that cabling so I wouldnt wear out the psu...



Damn...I start to sound like an idiot here...
 
The Mac Pro Motherboard>PCI 6pin cables are unique and you wont find them in a computer store.

You can either use them or use the molex in the optical bay.

There are cables to convert 6pin PCI to the 8pin PCI that will fit your asus.
 
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