re FPGAs

Stefan Ziegenbalg stefan.ziegenbalg at ztex.de
Wed Jan 20 09:54:06 EST 2010


Hi Paul,

cristian paul peñaranda rojas wrote:
> On Sat, Jan 16, 2010 at 09:47:48PM -0500, Carlos Camargo wrote:
>> Yes, implementing CPUs an FPGA is not efficient, Xilinx and Altera
>> provide
> 
> not efficent at all or just for specific tasks?

you need to define efficiency.

If you are talking about efficiency in using silicon it is inefficient
at all.

If you talking about costs it is usually inefficient. In particular if
one needs a general purpose processor. Only in special cases
implementing a CPU in a FPGA makes sense, e.g.
* Crypto-processors and some other cases in HPC, i.e. if fixed
   computations need to be run on huge amounts of data
* If you only need a more or less small processor and if a FPGA is
   already existing.

Regards Stefan



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