NVIDIA Tegra3 Quad Core vs Apple's A5X Dual Core Heavyweight Battle Coming Soon

steelbom · Apr 5, 2012

jonmorris said:
Yes, you are right that it's perhaps the wrong word as it implies it could damage the device. However, while it may be within limits - it CAN cause the device to freeze and bring up the warning to let it cool down. Secondly, it can under extreme load actually drain power quicker from the battery than the charger can top it up.

That is an issue and the problem developers are talking about. Nobody wants to release an app that causes either of the above problems.

It can't become so hot that it'll show you that warning unless you use it in direct sunlight for an extended period of time while gaming, if it did give you that warning in normal use it would be approaching a temperature which is outside of its thermal specifications, and it'd be a real problem.

The developer has nothing to do with it, and they can't solve either of those things. Any 3D game will make the device quite warm, I don't see why the developers would worry about it.

The A5X only draws at most 3 watts per hour, it's the display which is drawing the majority of it, at 7 watts per hour, at 100% brightness.

I own an iPhone 4S and I think it actually gets hotter than the iPad 3 when gaming, but it's never bothered me before.

rushmore · Apr 5, 2012

Though the current iPad 3 (by most people) rocks, we all know a quad core will ship in the fall that should run cooler. The new iPad seems a bridge response to the Tegra 3, thanks to the Prime as the first example.

jonmorris · Apr 5, 2012

viber said:
And exactly what developers are you referring to?

I can't name them as they don't want to speak on record. We've been trying to convince them otherwise, but for now - there's no story.

If you choose to believe I'm making it up then that's fine as I am not going to get them in trouble and in turn have them refuse to work with us in the future.

I'm sure word will get out sooner or later.

My One X gets pretty hot too - and when you're running Tegra 3 optimised games (which look really nice) you can kill the battery in no time. In the space of just 20 minutes, I'd gone from a low battery warning at 15% to 1% and switching off!

steelbom · Apr 6, 2012

rushmore said:
Though the current iPad 3 (by most people) rocks, we all know a quad core will ship in the fall that should run cooler. The new iPad seems a bridge response to the Tegra 3, thanks to the Prime as the first example.

I'm not so sure about that. I think we'll see Apple's response to the Tegra 3 next year, or perhaps even in the iPhone 5 around October this year. I expect it to be either a dual-core or a quad-core Cortex A15 paired with PowerVR SGX600 series graphics.

The A5X was really just to compensate for the higher resolution display, it didn't actually bring any more performance to the table, in fact it actually brought less when factoring in the resolution, as some games (shady heavy ones, I believe) will need to run around 1536x1152, rather than the full 2048x1536.

viber · Apr 6, 2012

rushmore said:
Though the current iPad 3 (by most people) rocks, we all know a quad core will ship in the fall that should run cooler. The new iPad seems a bridge response to the Tegra 3, thanks to the Prime as the first example.

The Prime falls short of the iPad2. And there will be no quad core iPad in the fall. Never happen.

jonmorris said:
I can't name them as they don't want to speak on record. We've been trying to convince them otherwise, but for now - there's no story.

If you choose to believe I'm making it up then that's fine as I am not going to get them in trouble and in turn have them refuse to work with us in the future.

I know you can't name them.

rushmore · Apr 6, 2012

Most iPad games can get away with non native res due to the scaling features of the new gpu. This is why even most iPod apps and even lower res video and web sites look better than on the iPad 2 and Prime.

The scaling of lower res content IMO is one of the best features of the A5X.

Treknologist · Apr 6, 2012

The woes on the new iPad continue...
DailyTech - Apple's iPad Woes Continue, Users Now Reporting 3G Connectivity Problems

rushmore · Apr 8, 2012

Not having any issues with the wifi only version of the iPad "3" and have used the heck out of it to find a reason to return it. Still want a Prime as my main Android tablet, but will wait for the the revised panel version- assuming the revised version is not the lower spec 300.

Based on Anandtech graphics benchmarks of the Tegra 3, I might not bother with the 700. Seems the gpu will have a rough time with the higher res display.

Gooser91 · Apr 8, 2012

rushmore said:
Not having any issues with the wifi only version of the iPad "3" and have used the heck out of it to find a reason to return it. Still want a Prime as my main Android tablet, but will wait for the the revised panel version- assuming the revised version is not the lower spec 300.

Based on Anandtech graphics benchmarks of the Tegra 3, I might not bother with the 700. Seems the gpu will have a rough time with the higher res display.

I doubt they end uP using tegra 3 for high res displays. I would use the S4.

rushmore · Apr 8, 2012

I thought it was supposed to use the S4, but keep seeing the media spec the 700 with a Tegra 3. If Anandtechs benchmark results are accurate, agreed the Tegra 3 makes little since.

steelbom · Apr 8, 2012

rushmore said:
Most iPad games can get away with non native res due to the scaling features of the new gpu. This is why even most iPod apps and even lower res video and web sites look better than on the iPad 2 and Prime.

The scaling of lower res content IMO is one of the best features of the A5X.

What do you mean 'the scaling features of the new gpu'? An iPad 2 can't run a game at a lower resolution and look any good. As far as I know, the upscaling has nothing to do with the GPU.

viber · Apr 9, 2012

rushmore said:
I thought it was supposed to use the S4, but keep seeing the media spec the 700 with a Tegra 3. If Anandtechs benchmark results are accurate, agreed the Tegra 3 makes little since.

The Tegra line is overrated to begin with.

rushmore · Apr 9, 2012

steelbom said:
What do you mean 'the scaling features of the new gpu'? An iPad 2 can't run a game at a lower resolution and look any good. As far as I know, the upscaling has nothing to do with the GPU.

True for the iPad 2, but the new iPad handles scaling a lot better. There is a hack if jail broken to where the iPad 2 "kind" of does the same thing. The new iPad needed it in hardware due to the higher res display.

The New iPad Uses Retina Assets for Non-Universal Games | Touch Arcade

Added:

I have a lot of games I got for the iPod that may never update for tablets or be slow to get updated. More than not look good on the new iPad, but were fuzzy on the iPad 2. The scaling even works for lower res video and comics, but you get to a point where garbage in garbage out- depending on the source.

I notice that scaling apps on my Thrive and the Prime looks just like the iPad 2 (fuzzy). Perhaps the GPU that is used for the Asus 700 will have the same ability as the A5X gpu.

rushmore · Apr 9, 2012

viber said:
The Tegra line is overrated to begin with.

Seems the Tegra 3 is the perfect SoC for a 1280 X 800 display, since power efficient, great video (media) support & 3D for the display res. Catch is based on benchmarks, the gpu is already hitting its efficiency ceiling.

1080p or higher needs a lot more power to perform smoothly and not hit the ceiling in regards to diminished returns (the chip starts choking). Not seeing anyway the Tegra 3 is in the BOM for the Asus 700, unless it becomes a "Tegra 3X"- having a more robust GPU.

This of course would impact battery life and tie into Goose's point about the Prime being a better fit for portability/battery life. The Asus 700 will almost certainly have the same issues as the new iPad, since a 1080p display and 3D as well needs a lot more power.

Added:

I really hope the Prime is being shipped soon with a revised back panel and the 300 is not simply the real "fix". I am going to give my Thrive to my son and get the Prime.

steelbom · Apr 9, 2012

rushmore said:
True for the iPad 2, but the new iPad handles scaling a lot better. There is a hack if jail broken to where the iPad 2 "kind" of does the same thing. The new iPad needed it in hardware due to the higher res display.

The New iPad Uses Retina Assets for Non-Universal Games | Touch Arcade

That's not handling scaling better though, that's just using retina assets for the iPhone instead of the standard assets.

Added:

I have a lot of games I got for the iPod that may never update for tablets or be slow to get updated. More than not look good on the new iPad, but were fuzzy on the iPad 2. The scaling even works for lower res video and comics, but you get to a point where garbage in garbage out- depending on the source.

I notice that scaling apps on my Thrive and the Prime looks just like the iPad 2 (fuzzy). Perhaps the GPU that is used for the Asus 700 will have the same ability as the A5X gpu.

I don't think the GPU has anything to do with it. I'm not entirely sure what you mean, but the A5X is just the same as the A5 but with twice the GPUs. That aside, low res content should actually look the same on iPad 3 as it does on iPad 2, not any better though.

rushmore · Apr 9, 2012

So it is a placebo then. If this is sugar, it is some good sh...ugar

I notice a difference with games, comics and video. Fuzzy on the iPad 2 and not on the iPad "3".

steelbom · Apr 10, 2012

rushmore said:
So it is a placebo then. If this is sugar, it is some good sh...ugar

I notice a difference with games, comics and video. Fuzzy on the iPad 2 and not on the iPad "3".

That's because of the pixel density. I've got an iPhone 4S and when I look back at my 3GS everything looks a bit blurry.

viber · Apr 11, 2012

steelbom said:
That's because of the pixel density. I've got an iPhone 4S and when I look back at my 3GS everything looks a bit blurry.

For those that haven't experienced it first hand, they wont understand.

Going back to a low pixel density display makes you feel like you need glasses.

rushmore · Apr 11, 2012

viber said:
For those that haven't experienced it first hand, they wont understand.

Going back to a low pixel density display makes you feel like you need glasses.

I am hip with all that. I am talking about the quality of lower res apps, comics and video. They look better on the new iPad than the iPad 2. Even with the retina hack for the iPad 2.

It would be expected that the higher res would make things even fuzzier. Not the case.

steelbom · Apr 11, 2012

viber said:
For those that haven't experienced it first hand, they wont understand.

Going back to a low pixel density display makes you feel like you need glasses.

rushmore said:
I am hip with all that. I am talking about the quality of lower res apps, comics and video. They look better on the new iPad than the iPad 2. Even with the retina hack for the iPad 2.

It would be expected that the higher res would make things even fuzzier. Not the case.

You're talking about iPhone apps running on the iPad only? Or iPad apps as well? If the former, the reason is because the retina assets for the iPhone are being used, which means you'll see a big increase in quality. If iPad apps, well the only way that's possible is if it's using retina assets. It's not possible for it to look any better on a retina display when using lower resolution assets.

NVIDIA Tegra3 Quad Core vs Apple's A5X Dual Core Heavyweight Battle Coming Soon

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