Homebrew Possibility Of N3DS games on O3DS?

MRJPGames · Oct 11, 2015

Ok...
You can, but you shouldn't. It would not work properly, as soon as the game uses more RAM than the o3ds it will just crash. It will run incredibly slow. Basically no point.

m45t3r · Oct 11, 2015

masterz87 said:
I wonder hat the dmips on the new 3ds is in total, I know that older arm cores were only doing a tiny bit above 1dmips/mhz/core and the a9's are supposed to do 2.5dmips/mhz/core. I know the cache on the n3ds is going to be a major difference in terms of perf.

Yep, even at 444MHz the Vita CPU would easily beat the 800MHz ARM11 CPU on 3DS. It's like comparing an Atom at 2GHz vs a Core i7 at 800MHz, the Core i7 is still faster, and by a helfty margin.

zoogie · Oct 11, 2015

m45t3r said:
Yep, even at 444MHz the Vita CPU would easily beat the 800MHz ARM11 CPU on 3DS. It's like comparing an Atom at 2GHz vs a Core i7 at 800MHz, the Core i7 is still faster, and by a helfty margin.

comparing apples to oranges with cows to chickens?
cortex gives about a 50% mhz for mhz advantage over arm11. Vita beats (n)3ds by virtue of it's GPU.

m45t3r · Oct 11, 2015

zoogie said:
comparing apples to oranges with cows to chickens?
cortex gives about a 50% mhz for mhz advantage over arm11. Vita beats (n)3ds by virtue of it's GPU.

Not really, this is just a example and is not that far from reality (the Core i7 has 3-4x more IPC than an Atom CPU).

BTW, 50% is in Cortex-A8. Vita is a Cortex-A9, that has a 2.5MIPS/MHz (compared to ~1.2 from the best implementations of ARM11, or ~0.8 from the worst; and really, I don't think Nintendo went with the best ARM11 implementation out there*).

Of course, what Vita beast 3DS in graphics is the GPU. However the CPU should still be more powerful (it is difficult to compare anyway, you would need a good benchmark ported natively in both platforms).

*: in this case, best or better would be longer pipelines, better and bigger cache etc.

Alternator47 · Oct 11, 2015

A thread full of 11 year olds that don't understand hardware.

zoogie · Oct 11, 2015

m45t3r said:
Not really, this is just a example and is not that far from reality (the Core i7 has 3-4x more IPC than an Atom CPU).

BTW, 50% is in Cortex-A8. Vita is a Cortex-A9, that has a 2.5MIPS/MHz (compared to ~1.2 from the best implementations of ARM11, or ~0.8 from the worst; and really, I don't think Nintendo went with the best ARM11 implementation out there*).

Of course, what Vita beast 3DS in graphics is the GPU. However the CPU should still be more powerful (it is difficult to compare anyway, you would need a good benchmark ported natively in both platforms).

*: in this case, best or better would be longer pipelines, better and bigger cache etc.

We need empirical tests.

I did run the same sunspider JS test in Vita, N3DS, and 3DS though.
Vita 22000 ms
N3DS 15000 ms
3DS 90000 ms
(PS4 1000ms, my i5 lappy 250ms -- just for fun)

Yes, i know, the software is different, but it is interesting to say the least.

MRJPGames · Oct 11, 2015

zoogie said:
We need empirical tests.
I did run the same sunspider JS test in Vita, N3DS, and 3DS though.
Vita 22000 ms
N3DS 15000 ms
3DS 90000 ms
(PS4 1000ms, my i5 lappy 250ms -- just for fun)

Yes, i know, the software is different, but it is interesting to say the least.

It proves N3ds browser is better than Vita browser, not much more but still interesting!

m45t3r · Oct 11, 2015

zoogie said:
We need empirical tests.
I did run the same sunspider JS test in Vita, N3DS, and 3DS though.
Vita 22000 ms
N3DS 15000 ms
3DS 90000 ms
(PS4 1000ms, my i5 lappy 250ms -- just for fun)

Yes, i know, the software is different, but it is interesting to say the least.

The problem with SunSpider is that it generally shows more the performance of Javascript engine than the hardware itself. You can only compare performance with SunSpider using the exactly same browser on the exactly same OS (even them, I don't think this would be the best benchmark to compare hardware anyway).

Both Vita and 3DS uses WebKit, however I don't know if Sony/Nintendo even bothered to port JIT compiler from WebKit to those consoles. In the case of PS4 (since it does seems to use a JIT compiler, considering the results), it already used a x86 platform maybe it was easy to port*?

*: yeah, I know there is iOS and it uses WebKit too and of course it is ARM, however there is still the problem of memory of those consoles. I think the JIT compiler from WebKit is optimized for more RAM than 3DS even have (and Vita too, in a lesser case). Or maybe I don't know what I am saying, never bothered to look at WebKit source code.

doctorgoat · Oct 11, 2015

Misledz said:
As someone who had a PSP Phat overlocked for long term gaming, I can tell you, that

1. Your 3DS lifespan will drop down drastically.
2. Your 3DS battery life drain if you thought it was worse? Try 1.5hrs or 2hrs flat.
3. Possible overheat with the workload. It doesn't seem that obvious, but it's no different from a smartphone when you play any graphics hungry game longer than 5mins

... I hope you mean you had it overclocked >333mhz, because running at 333mhz was fine on a PSP. I think a few games even did it without modification.

hippy dave · Oct 11, 2015

Why is this thread back?

teampleb · Oct 11, 2015

Ain't gonna happen.

/thread

Noise964 · Oct 11, 2015

this question takes the cake honestly bravo OP bravo

gudenau · Oct 11, 2015

No, just no. The code is made to run on three/four cores for one, for two it is made to have access to 2 times the memory. This just will not work.

NekoMichi · Oct 11, 2015

Wait, so if N3DS has 4 CPU cores with 1 reserved for the OS, then that leaves 3 available for games. O3DS has 2 CPU cores with 1 reserved for the OS and 1 for games. Does that mean the N3DS has 3 times the number of cores dedicated to gameplay than the O3DS (of course, performance will be different to the 3x mark since the clock speeds vary)?

masterz87 · Oct 12, 2015

NekoMichi said:
Wait, so if N3DS has 4 CPU cores with 1 reserved for the OS, then that leaves 3 available for games. O3DS has 2 CPU cores with 1 reserved for the OS and 1 for games. Does that mean the N3DS has 3 times the number of cores dedicated to gameplay than the O3DS (of course, performance will be different to the 3x mark since the clock speeds vary)?

o3ds the syscore lets games request up to 70% of the cputime on that core,whereas the n3ds has 1 core entirely for the system all to itself. And when playing o3ds games I'm sure i still does the same thing of requesting cputime on the "syscore" even though it's not the syscore anymore.

tl;dr
o3ds 1 core+up to 70% of the core's work for games.
n3ds 3 cores to games plus the obvious advantage of the cache.

sweis12 · Oct 12, 2015

zoogie said:
We shouldn't even make that assumption until someone's already done it.

https://drive.google.com/file/d/0BwFYOpOwLKJ2QmJTSE43VThEbVk/view

Jwiz33 · Oct 12, 2015

Misledz said:
Actually, No.

Super Mario Sunshine 3D!?! HYPE!

sweis12 · Oct 12, 2015

Jwiz33 said:
Super Mario Sunshine 3D!?! HYPE!

Not to kill your vibe, but that picture has been confirmed fake for a while now.

Jwiz33 · Oct 12, 2015

sweis12 said:
Not to kill your vibe, but that picture has been confirmed fake for a while now.

Oh, I should start to read more then.

kje123 · Oct 12, 2015

Noise964 said:
this question takes the cake honestly bravo OP bravo

I can't ask a simple question without being chastised?
Fucking hell, some of you people really are rude.
(Thanks to the people who actually answered this question, and sorry if I posted a duplicate thread)

Homebrew Possibility Of N3DS games on O3DS?

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