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iMac and 30" Display
- Thread starter joshwest
- Start date
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Yes, the maximum resolution will be 1280x800, just like the screen on MacBooks
Well I have a 1650x1080 resolution on my 20" external monitor.
Seems like your irony detector isn't powered properly
With just a very quick search you (joshwest) would have found out that the maximum resolution for external monitors connected via DVI to the current aluminum iMacs is
whereas the 30" Cinema Display is best driven by a resolution of 2560 x 1600. You'd be better of with a 23"/24" display
The maximum resolution you can run a 30" display connected to a non-Dual Link DVI port is 1280x800.
You of course could use it with a MacBook or iMac, but because of the higher native resolution of the 30" display the picture when driven by a lower resolution will probably be relatively poor (blurry). A 23"/24" display is a much better choice with a maximum output resolution of 1900x1200.
AGAIN, the maximum resolution you can run a 30" display on a single-link DVI port is 1280x800.
Is it really so hard to understand?
AGAIN, the maximum resolution you can run a 30" display on a single-link DVI port is 1280x800.
Is it really so hard to understand?
OhFrenchman said nothing to the contrary
Far as I can see, he quoted someone else who said it, but recommended getting a smaller unit that would correctly ouput the max external resolution.
Then you should read his second post more attentively. Especially the part where he said "Of course you can use it" refering to the possibility of using 1920x1200 on a 30" with SL DVI
Perhaps you should read it LESS attentively?! All he says is "you of course could use it" - you could use it - meaning the 30" unit in general, but "the resolution it will be poor/blurry, get a smaller unit with 1900x1200 max output" [paraphrased]
Uh oh, I'm right!
Uh oh, I'm right!
Easy to understand the words -- difficult to understand the logic:
- The 30" ACD specifies that it will accept a 1920 x 1200 DVI input.
- The iMac specifies that it will drive a 1920 x 1200 x 60 Hz DVI monitor.
- The DVI standard requires 1920 x 1200 x 60 Hz to use single-link DVI only.
http://www.apple.com/displays/specs.html
http://developer.apple.com/document...e_ref/doc/uid/TP40003994-DontLinkElementID_11
http://en.wikipedia.org/wiki/DVI#Specifications
So, what's the story? WHY doesn't 1920 x 1200 work on a 30" ACD?
No, it won't be pretty -- but Apple's specs seem to claim it should work.
...just curious,
LK
Apple's claim is that to run 30" display you need a DL DVI port. They aren't saying it would work @ 1920x1200, they just say it doesn't work with anything less than DL DVI.
Why 1280x800? I don't know, but I know its exactly 1280x800.
Mabe you should read up on DVI. The standard says:
1) You MUST use dual-link at 2560 x 1600 x 60 Hz.
2) You MUST NOT use dual-link at 1920 x 1200 x 60 Hz.
See link above.
No? Then WHY does the 30" ACL spec sheet say "1920 x 1200" ?
See link above.
WHERE does Apple say any such thing?
URL, please.
If it "doesn't work with anything less than DL", then it can't do 1280 x 800.
1) The DVI standard forbids using dual-link at that resolution. See link above.
2) The iMac has NO WAY to drive a dual-link DVI -- the mini-DVI output
DOES NOT supply the required Link-2 RGB signals. See link below.
http://en.wikipedia.org/wiki/Mini-DVI.
...BTW, large fonts are not a substitute for facts,
LK
I am sitting here in front of my ACD 30" which is attached to a Mini C2D with 4GB of RAM (3.3 if you want to be technical).
It has the same output through its single link DVI that an iMac does -- up to 1920x1200 @ 60Hz.
It will only run this monitor at 1280x800. End of story.
I could kill Multi for convincing me not to get my Mac Pro in August!
It has the same output through its single link DVI that an iMac does -- up to 1920x1200 @ 60Hz.
It will only run this monitor at 1280x800. End of story.
I could kill Multi for convincing me not to get my Mac Pro in August!
Does this help?
http://docs.info.apple.com/article.html?artnum=106564
BTW, I'm not saying 1920x1200 works (I don't have a 30" ACD or
any other 2560 x 1600 display) -- just wondering why the specs
(on both ends of the wire) say "1920 x 1200" if it doesn't work.
...who/what is "Multi" ?
LK
Not exactly. You should replace "at" with "for displays with maximum resolution"
http://www.apple.com/displays/specs.html
Here you go. Read the part with the words "Compatibility". It clearly states that 30" isn't compatible with computers that only have SL DVI (Mac mini, etc)
Because when used with a compatible computer, you can run 30" at 1920x1200 resolution, or any other from the list from the link I've given above.
The DVI link doesn't give a rat's rump about the "maximum resolution" of
the receiving device. DVI doesn't even care whether the receiving device
is a display at all -- or whether 'resolution' has any meaning to the device.
DVI cares ONLY about the bandwidth of the signal being transmitted. If
the required bandwidth is less than 3.7 Gb/s, it MUST BE transmitted in
single-link mode -- and the link #2 RGB signal pairs MUST NOT be used.
"Dual link capability" has absolutely no meaning at 1920 x 1200 x 60Hz
(3.3 Gb/s); whether it exists or not, the second link will not be used.
http://en.wikipedia.org/wiki/DVI
Here you go. Read the part with the words "can run." Its learned author clearly
states that 30" is compatible with computers that only have SL DVI. Sometimes.
https://forums.macrumors.com/showpost.php?p=4655836
So, how is 1280x800 different from 1920x1200? They're both single-link DVI
frequencies, and they're both listed on the iMac and 30" ACD spec sheets.
"Few things are harder to put up with than the annoyance of a good example."
- Mark Twain
.
Doesn't change the fact that the SL DVI can output only 1280x800 for a 30" display.
Yes, I said you can run a 30" display connected to a SL DVI, but the maximum resolution for it will be 1280x800.
Yes, you CAN run it, but only at 1/4 of it's native resolution, so NO point in doing it.
Just like, despite Apple's claim that Motion isn't compatible with integrated graphics, you CAN run it on MacBooks and Mac minis, but it's SO slow, that there's NO point in doing it.
As I already said in this thread, I do not know why the limit is 1280x800. And I have already said why Apple has 1920x1200 in ACD's specs page.
This is becoming rather annoying. Why continue this pointless discussion? Are you being stubborn for the sake of being stubborn? The OP has already got his answer, and that answer is confirmed by people who actually use 30" with SL DVI, like netdog