Linked by Thom Holwerda on Fri 22nd Jun 2012 18:16 UTC
Apple "Why did Apple just release new MacBook Airs, MacBook Pros, and a Retina MacBook Pro, but no new iMacs or Mac Pros? And why are the iMacs probably being updated this year while the Mac Pro update won't happen for 12-18 months? As usual, I have some guesses." Good points.
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Drumhellar
Member since:
2005-07-12

Apple is probably waiting for Xeons with on-CPU graphics. This would eliminate the difficulty of routing the PCIe available from the CPU or mainboard and the graphics from an add-in board to the same port.

With on-CPU graphics, it makes it much easier to add a thunderbolt port, and add-in graphics boards can still output via the integrated chip.

Reply Score: 2

tylerdurden Member since:
2009-03-17

Thunderbolt is basically a transceiver which allows PCI Express lanes to operate over longer distances.

I don't see why you think it would depend on the onboard graphics.

Reply Parent Score: 2

Drumhellar Member since:
2005-07-12

Thunderbolt isn't just PCIe; the controller multiplexes PCIe and a DP video signal, then send it over the cable. It is this video signal that is used to drive displays, not the PCIe data.

Reply Parent Score: 2