Linked by Thom Holwerda on Wed 7th Mar 2012 22:59 UTC
Apple And it was that time of the year again - Apple held one of its product announcements. This one focussed on the iPad mostly, and while some will call it a disappointment merely because virtually everything had already been leaked, I'm still in awe over the fact the newly announced iPad has a 2048x1536 display. My mind is blown.
Thread beginning with comment 510154
To view parent comment, click here.
To read all comments associated with this story, please click here.
RE[3]: CPU
by phoenix on Fri 9th Mar 2012 22:29 UTC in reply to "RE[2]: CPU"
phoenix
Member since:
2005-07-11

In the realm of ARM, "quad-core" graphics literally means "4 GPUs". Especially when it comes to the PowerVR GPUs. An SGX543 has 1 GPU "core" (ie, 1 GPU). An SGX543MP2 has 2 GPU "cores" (ie, 2 GPUs). And, an SGX543MP4 has 4 GPU "cores" (ie, 4 GPUs).

In the ARM GPU sphere, "multi-core" means "multi-GPU". Think of it in terms of nVidia's SLI and Ati's CrossFire. Not in terms of processing units inside the individual GPUs.

Reply Parent Score: 2

RE[4]: CPU
by vivainio on Sat 10th Mar 2012 07:55 in reply to "RE[3]: CPU"
vivainio Member since:
2008-12-26

In the realm of ARM, "quad-core" graphics literally means "4 GPUs". Especially when it comes to the PowerVR GPUs. An SGX543 has 1 GPU "core" (ie, 1 GPU). An SGX543MP2 has 2 GPU "cores" (ie, 2 GPUs). And, an SGX543MP4 has 4 GPU "cores" (ie, 4 GPUs).


Now we are on to something.

People that know about this PowerVR convention are not the ones being targeted by the Apple marketing speak in the launch comms. Apple is using it to steer the eye away from the fact that they only have a dual core CPU.

Nothing wrong with that, of course.

Reply Parent Score: 2

RE[5]: CPU
by phoenix on Mon 12th Mar 2012 06:25 in reply to "RE[4]: CPU"
phoenix Member since:
2005-07-11

People that know about this PowerVR convention are not the ones being targeted by the Apple marketing speak in the launch comms. Apple is using it to steer the eye away from the fact that they only have a dual core CPU.


What's wrong with "only having a dual-core CPU"? It's not like there's a heavy demand/need for multi-tasking on a tablet. Especially considering the lack of "true" multi-tasking in iOS. The biggest "need" in a tablet with this high of a resolution is graphics hardware. And that's what the A5X comes with: the ability to pump pixels faster than just about any other ARM GPU out there right now (things will change with the Adreno 300-series and the ARM Mali-T-series).

Anandtech has some blog posts about demonstrations by ... someone (TI?) with 4 videos playing at once, and not being able to stress the quad-core CPU inside.

Fast, power-efficient dual-core CPU with uber-fast GPU with all kinds of hardware decode capabilities is where it's at for tablets (and, most likely, cell phones).

Will be interesting to see how ARM's big.LITTLE architecture plays out near the end of this year/beginning of next year. High-frequency, dual-core Cortex-A15 matched with low-frequency Cortex-A7 (with some kind of next-gen GPU) should pretty much be nirvana for any mobile task. ;)

Reply Parent Score: 2

RE[4]: CPU
by zima on Wed 14th Mar 2012 23:53 in reply to "RE[3]: CPU"
zima Member since:
2005-07-06

But it still isn't much of a differentiator - graphics are inherently parallel, also internally for GPUs, so one GPU might as well be faster than collection of four (heck, one can be as fast as, say, a thousand using the same amount of silicon; or it might very well end up faster, overheads and all)

It is, at most, an easy & digestible number to differentiate from the previous Apple SoC ...so, yeah, marketing.

Edited 2012-03-14 23:54 UTC

Reply Parent Score: 2