About 4K video...

[RAMd®d]

4K video on a C2D? You, sir, are an optimist!

LOL, no, just ignorant of limitations.

I *know* that it won't play as I've tried. I was just curious to see what would happen.

My C2D is a Mid 2010. It plays 1080p no problem on my LED ACD at 2560x1440, and it does support 2560x1600. The Elysium trailer is 480MB HDTN. I've got a couple of others. They play fine on my Late 2013 mini, but obviously not at the native resolution.

[Chakravartin]

hal wrote:
I read through all of the 4k changes with 10.9.3 and got to the end to learn that the max refresh rate is still 30hz. Why buy a $3k monitor to run at 30hz?

Some can run at 60Hz and Thunderbolt 2 devices (possibly excepting this generation of MBP-R 13-inch) can push 60Hz.

[Filliam H. Muffman]

Chakravartin wrote: Some can run at 60Hz and Thunderbolt 2 devices (possibly excepting this generation of MBP-R 13-inch) can push 60Hz.

Thunderbolt 1.2 only identifies the possibility of 60 Hz refresh rates on the bus. Actual capability going forward will likely require a better than default GPU and CPU in the MacBook Pro and discrete GPU in iMac (ie.: as soon as Apple starts selling a new 2014 iMac, and hopefully new Mac mini). Using a Thunderbolt 1.2 bus for 4K means no storage device on that buss will run at it's maximum theoretical speed because 4K @ 60 Hz takes up over 50% of the rated bandwidth.

[pRICE cUBE]

I think 4k is a coming reality but I don't think most people will care or need it. It makes difference on very large screen.

TV makers have pretty much reached the point of diminishing returns. Thinner TVs can' get slightly thinner but they are very thin already. They can increases color and contrast but image quality is very good. Sets are using less electricity. Some can connect to the internet. Nothing left but to push a resolution standard.

[Chakravartin]

Filliam H. Muffman wrote:
[quote=Chakravartin]Some can run at 60Hz and Thunderbolt 2 devices (possibly excepting this generation of MBP-R 13-inch) can push 60Hz.

Thunderbolt 1.2 only identifies the possibility of 60 Hz refresh rates on the bus.
Thunderbolt 2.

60Hz.

http://www.anandtech.com/show/8023/apple...4k-display

With 10.9.3 Apple has not only broadly increased support for 4K displays, but also enabled 60Hz output to 4K displays on more systems. The Dell UP2414Q, a 24" 3840 x 2160 display, is now properly supported by OS X and Macs that can drive it at its native resolution...

Along with expanded display support, some new Macs also get the ability to drive 4K panels at 60Hz. By some I mean one: the 15-inch MacBook Pro with Retina Display from late 2013. This is the Haswell refresh of the rMBP15, and it remains the only portable Mac capable of driving a 4K panel at 60Hz over either of its two miniDP ports (HDMI is limited to 30Hz)...

Obviously the new Mac Pro works just fine with these displays as well.

[Mr645]

4k? I had to buy a new, large TV 2 weeks ago. My 71" DLP failed and parts are out of production (2005 Samsung model).
We looked at 4k but with the high cost and total lack of software, no way we could justify it. In fact with nice 1080p sets for $1600 in 70" we could not justify a 75" Samsung or 80" Sharp sets that were $3000

[Filliam H. Muffman]

Chakravartin wrote:
[quote=Filliam H. Muffman]
[quote=Chakravartin]Some can run at 60Hz and Thunderbolt 2 devices (possibly excepting this generation of MBP-R 13-inch) can push 60Hz.

Thunderbolt 1.2 only identifies the possibility of 60 Hz refresh rates on the bus.
Thunderbolt 2.

60Hz.

http://www.anandtech.com/show/8023/apple...4k-display

With 10.9.3 Apple has not only broadly increased support for 4K displays, but also enabled 60Hz output to 4K displays on more systems. The Dell UP2414Q, a 24" 3840 x 2160 display, is now properly supported by OS X and Macs that can drive it at its native resolution...

Along with expanded display support, some new Macs also get the ability to drive 4K panels at 60Hz. By some I mean one: the 15-inch MacBook Pro with Retina Display from late 2013. This is the Haswell refresh of the rMBP15, and it remains the only portable Mac capable of driving a 4K panel at 60Hz over either of its two miniDP ports (HDMI is limited to 30Hz)...

Obviously the new Mac Pro works just fine with these displays as well.
Misses the point, Apple is about 9 months behind in getting the OS up to date in supporting the hardware. And there is a very limited amount of hardware that can run 4K displays properly. This is not unexpected because it took Apple several months to get the original version of Thunderbolt working with OS updates, but the iMac had it instead of the Mac Pro. It's like they don't have enough engineers in the company to support rolling out their best technology in all their computers.

I still haven't seen any benchmarks that show if Thunderbolt 1.2 can drive a 4K panel at 60 Hz and run storage at full speed on the same bus. Hint: it can't, or otherwise the new iTrashcan could run six 4K displays. I still think it's a waste of bandwidth to push 4K video over the PCIe bus to Thunderbolt, it limits both video and data transfer rates.

[RAMd®d]

It's like they don't have enough engineers in the company to support rolling out their best technology in all their computers.

I think this is exactly one of Apple's biggest problems.

[vision63]

RAMd®d, I always need you to try to understand these things since it you that inspired me to get a HDTV back in 2008. When you upgrade it's time for me to upgrade.

[Chakravartin]

Filliam H. Muffman wrote:
I still haven't seen any benchmarks that show if Thunderbolt 1.2 can drive a 4K panel at 60 Hz and run storage at full speed on the same bus...

Thunderbolt 2.

Displayport 1.2.

The 10Gbps per channel limit on Thunderbolt 1 was just a nudge under the minimum (10.2Gbps) to drive a 4K display at 30Hz. A 20Gbps Thunderbolt 2 port should have plenty of bandwidth for file transfers even while driving a 4K display at 30Hz.

A 60Hz 4K signal hits 14Gbps and with 20Gbps to blow through there's still plenty of headroom for file-transfers (the equivalent of the full speed of a SATA bus) under Thunderbolt 2.

Unless you need to max out the bandwidth to a striped SSD RAID you're not gonna have much trouble with your file transfers while watching upscaled 1080p video on your shiny new 4K monitor.