IInuyasha74 :
kenjitamura :
How does it compare to the ODROID-C1?
Overall better. The Odroid-C1 uses Amlogic S805 SoC, which uses Cortex-A5 cores. Those cores are even lower performance than Cortex-A7, and really are a poor choice for just about anything. Even web browsing.
It likely does have a faster graphics chip, but that doesn't matter when the CPU is so slow.
*sigh* No. I actually signed on with the intention of saying quite the opposite.
Let's start with the cores. They're both in-order single-issue cores, with the A7 being only about 21% more efficient. But the ODROID C1 is clocked 66.7% faster. So, the net result should be ~47% better performance by the C1.
Next, let's move on to to the RAM. The C1 uses DDR3, while Pi 2.0 uses LPDDR2. The chip used by the C1 is spec'd to run as fast as DDR3-2166. Unfortunately, I don't know how fast Pi 2.0's is clocked, but surely not that fast.
Now, for the biggest difference: I/O. I bought a nice, fast SDHC card for my Pi model B, and it's still dog slow. The problem is that it's connected over USB 2.0. The C1 features an eMMC interface that's many times faster. I don't (yet) have one, so I can't say exactly how much, but my experience with the Pi is that I/O to the SD card, USB ports, or anything else you try to connect has been one of its weakest areas. And yet, that's not changed in version 2.
Finally, there's the network. The Pi model B has a USB-connected 10/100 Ethernet port, as does version 2.0. The C1 features an integrated controller and a gigabit phy. I can't even get more than about 75 Mbps out of my Pi. Now, you can argue that 100 Mbps should be enough for most people (assuming v2.0 can even hit that), but you can't argue that it's better than the C1. I certainly don't enjoy waiting while I'm reading/writing files over the network.
An honorable mention is the C1's hardware H.265 decoder, although I'm not sure whether it yet has the necessary software support.
There's really no contest - the C1 is faster in every way. What the Pi has going for it is slightly lower power consumption and unmatched support among the user community. If what you want is an inexpensive, low power single-board-computer for running Ubuntu or Android, then buy a C1. But if you want to tinker and do hardware projects and have a lot of options for using the GPIO port, then get a Pi v2.0.