IPhone 4S for chess....

[JuLieN]

What are some of the kn/s results from start position for various chess apps?

Stockfish: 221 Kns in the start position

For comparison:
iPhone 3GS: 65 Kns
iPad 2: 277 Kns.

[Ralph Stoesser]

Chess Tiger: 170.9 Kn/s

Can Stockfish use both CPUs running on iPad 2 and iPhone 4s??

Btw: Android smartphones are nice for chess, but if you like
to listen to hifi sound from the headphone out, the iPhone is by far the best device. Very enjoyable with good head phones - or better - very good inear phones!

[Cubeman]

I have the ipod touch 4 and the latest version of Stockfish peaks at about 86 kn/s, is the 221 kn/s result from just one core, because I think Stockfish does not yet use 2 cores for iphone versions.I know that the ipad version can use 2 cores on the ipad 2.

[mclane]

reminds me all on eliza.

[JuLieN]

I have the ipod touch 4 and the latest version of Stockfish peaks at about 86 kn/s, is the 221 kn/s result from just one core, because I think Stockfish does not yet use 2 cores for iphone versions.I know that the ipad version can use 2 cores on the ipad 2.

Yes, it uses both cores on the iPhone 4S, that is really like a mini iPad 2

And it has a slightly lower nps because it's clocked at 800 MHz instead of 1 Ghz, for battery use reasons.

[Tord Romstad]

I have the ipod touch 4 and the latest version of Stockfish peaks at about 86 kn/s, is the 221 kn/s result from just one core, because I think Stockfish does not yet use 2 cores for iphone versions.I know that the ipad version can use 2 cores on the ipad 2.

There is no iPad version of Stockfish. There is only a single iOS version, which works on all devices. It will use both cores if your device has a dual-core CPU.

[Cubeman]

I have the ipod touch 4 and the latest version of Stockfish peaks at about 86 kn/s, is the 221 kn/s result from just one core, because I think Stockfish does not yet use 2 cores for iphone versions.I know that the ipad version can use 2 cores on the ipad 2.

There is no iPad version of Stockfish. There is only a single iOS version, which works on all devices. It will use both cores if your device has a dual-core CPU.

Thanks for the clarification, I suppose that Stockfish is the only chess app that can do dual core at the moment.Lets hope that some of the commercial apps follow suit.

[S.Taylor]

Wael, don't you think that the choice is between iphone 4s and iphone 5s, rather than between iphone 4s and iphone 5?

Isn't the first year of a new number, for people who want the newest gadgets, and the second year, with s at the end, for people who prefer stability, and maybe a longer lasting product, too?

[JuLieN]

Wael, don't you think that the choice is between iphone 4s and iphone 5s, rather than between iphone 4s and iphone 5?

Isn't the first year of a new number, for people who want the newest gadgets, and the second year, with s at the end, for people who prefer stability?

I agree, there's a two years cycle. Mostly because of carriers contracts.

[M ANSARI]

I have the ipod touch 4 and the latest version of Stockfish peaks at about 86 kn/s, is the 221 kn/s result from just one core, because I think Stockfish does not yet use 2 cores for iphone versions.I know that the ipad version can use 2 cores on the ipad 2.

There is no iPad version of Stockfish. There is only a single iOS version, which works on all devices. It will use both cores if your device has a dual-core CPU.

Yes, and I find it extraordinary that some developers will require you to buy the same program you bought for the Iphone to use on the Ipad ... just to get the native resolution of the Ipad. Surely that must be trivial to do! Imagine that if you bought a PC program, you would have to buy a new one every time you changed your monitor size !!!