Ok, so the main and vital differences between a jtag and rgh is that firstly the rgh cannot boot without a coolrunner, matrix, etc. It resets the cpu allowing it to run and boot into unsigned code. Also there is a file which allows it to be reset and boot into a hacked dashboard which is the ecc image. This just allows a console after the 7371 dashboard to be turned into a jtag. But without the coolrunner it will not boot and you will just have an xbox that won't work unless you flash the original nand back to it. It still has your freeboot and such. Everything is the same running wise, you just can jtag newer consoles like a slim.
-FriedModz

FriedModz wrote Ok, so the main and vital differences between a jtag and rgh is that firstly the rgh cannot boot without a coolrunner, matrix, etc. It resets the cpu allowing it to run and boot into unsigned code. Also there is a file which allows it to be reset and boot into a hacked dashboard which is the ecc image. This just allows a console after the 7371 dashboard to be turned into a jtag. But without the coolrunner it will not boot and you will just have an xbox that won't work unless you flash the original nand back to it. It still has your freeboot and such. Everything is the same running wise, you just can jtag newer consoles like a slim.
-FriedModz

So then what is a Dual or Triple Nand, and thanks ^

Dual nand and triple nand are *add ons*. You must buy them separately, but what it does is allow you to literally have 2 or 3 xbox's in 1. They are mod chips containing another xbox nand that you can use as either to rgh, make a dev kit, or use as retail for online. The Xecuter Demon is a the new dual nand coming out. The tri-nand is the matrix trident which has two nands on the chip instead of 1 like the demon.