JStamp, JStik and SaJe are all high speed native-execution modules based on the aJile 32-bit core. JStik has a 32-bit wide data path to external memory (vs JStamp's 8-bit path) so it can fetch opcodes and data in one cycle. This makes JStik 4-5X faster than JStamp at the same clock rate. SaJe also has 32-bit wide external memory and has higher speed SRAM so it's access to SRAM is about 20% faster than JStik. When accessing flash SaJe and JStik are the same speed. All these systems are highly deterministic and are excellent for hard realtime control.

TStik is based on a much lower cost 8-bit 8051 super core, the Dallas/Maxim DS80C400. TStik executes an interpreted JVM, so it is significantly slower than native-execution systems -- but it also costs less. TStik hits an unbeatable cost/performance point - for about the same price as a PIC-based Javelin you get megabytes more memory, real Java support, ethernet, CAN, and a lot more. But - don't use TStik for hard realtime control.

SNAP fits between TStik and JStik in terms of cost and performance.

Which is best for me? It depends on your needs of course, but here is our general answer to this common question: Best overall value: TStik. Best for battery operation: JStamp. Best realtime performance: JStik or SaJe. Best for fitting an existing BASIC stamp socket: Javelin. Best performance upgrade for an existing TINI SIMM72 socket: SNAP. Best for robotics: JStamp. Best floating point performance: JStik or SaJe.

For some comparative benchmarks see: http://www.practicalembeddedjava.com/benchmark/benchmark.html