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[Laptopmag] Thunderbolt Graphics Technology Turns Your Ultrabook Into a Gaming Rig. - Page 7

post #61 of 68
9/11/12 at 10:17pm
Hey.... weren't lucid the people who were making a chip to run dual GPUs regardless of brand/model a couple years ago?

Looks kinda cool.. But if i'm at my desktop I'll be using it.. Rather than running my notebook off of it.
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post #62 of 68
9/11/12 at 10:57pm
Quote:
Originally Posted by i_hax View Post

Quote:
Originally Posted by lordikon View Post

Nothing that draws 200 watts of power will output 200 watts of heat. A lot of that power would go towards calculations.

Electronics don't obey the laws of thermodynamics?

They do obey the laws. Not all energy becomes heat, you put 200w of energy into a GPU and you'll get some heat back, as well as work done (which isn't heat).

http://en.wikipedia.org/wiki/Laws_of_thermodynamics

I believe the first law of thermodynamics would be the important one in this case.
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post #63 of 68
9/11/12 at 11:14pm
Quote:
Originally Posted by watsoverclockin View Post

Hey.... weren't lucid the people who were making a chip to run dual GPUs regardless of brand/model a couple years ago?
Looks kinda cool.. But if i'm at my desktop I'll be using it.. Rather than running my notebook off of it.

They don't work together in rendering etc. They may have made having a dedicated PhysX card work with an AMD card rendering? not too sure on that one there
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post #64 of 68
9/11/12 at 11:51pm
Quote:
Originally Posted by rainbowhash View Post

They don't work together in rendering etc. They may have made having a dedicated PhysX card work with an AMD card rendering? not too sure on that one there

I think he's talking about Hydra, which IIRC intercepted DirectX calls and split the workload between GPUs. Of course it was mostly regarded as utter crap and the world seems to have mostly forgotten about it
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post #65 of 68
9/12/12 at 1:23am
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Quote:
Originally Posted by rainbowhash View Post

They don't work together in rendering etc. They may have made having a dedicated PhysX card work with an AMD card rendering? not too sure on that one there

they did.......but scaling was crap....a gimmick but maybe useful for some budget people as it allowed people to SLI/CFX or combine different cards into multi GPU configs even if it didn't have official support.
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post #66 of 68
9/12/12 at 2:05am
This is awesome for people who only have laptops... thumb.gif It could also save you some money on whatever laptop you decide to buy. A dedicated GPU usually costs an extra $100-300 when you configure a laptop. You might as well get a laptop with a good CPU+ram and save the rest for this device. Or just get an AMD trinity laptop... thumb.gif
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post #67 of 68
9/12/12 at 3:32am
Quote:
Originally Posted by Mattb2e View Post

I haven't been out of the loop for long at all, I own a SB laptop now. My statement was generic, let me refine it a bit. I was more talking about lower spec'd ultrabooks that utilize I3/I5 and low tdp I7 processors. Processors that are made for lower power consumption and longer battery life. Apparently there should be no bottleneck with top of the lines Ultrabooks equipped with the high end I7 mobile CPU's , but their are far too many processors used in Ultrabooks that aren't high end I7's that are more what I am curious about.
The I3'/I5 and low power I7 processors are dual cores with hyperthreading, take this "ultrabook" for instance http://www.meridianavstore.com/pd-acer-nx-ryxaa-003-aspire-s5-391-9880-us-13-3-ultrabook-computer.cfm
(I7 3517U http://www.notebookcheck.net/Intel-Core-i7-3517U-Notebook-Processor.74462.0.html)
Are you still telling me that a 17 watt TDP mobile processor is going to perform as well as a desktop I7 IB processor, and it will not bottleneck a GTX680?
Furthermore, I am not stating that there will be a bottleneck present in any of these setups, I am merely stating my curiosity as to whether one will exist.
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post #68 of 68
9/12/12 at 11:29am
Quote:
Originally Posted by lordikon View Post

They do obey the laws. Not all energy becomes heat, you put 200w of energy into a GPU and you'll get some heat back, as well as work done (which isn't heat).
http://en.wikipedia.org/wiki/Laws_of_thermodynamics
I believe the first law of thermodynamics would be the important one in this case.

Correct, but you said "a lot" of energy will go to the work done.

The 'work done' is the data signals (DVI/PCIe lane signals, etc) - it's not going to be a lot of energy. How many watts does it take to send a bitstream down a DVI cable? It's going to be a stupidly insignificant portion of the total wattage. Unless one wants to be pedantic, when you put 200W into a GPU you do essentially get it all back in heat.
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