High rate data stream and memory deficiency

I have a program that accumulates traffic from network interface in 800 Mb/s. This program is developed by Delphi, also in 32bit platform(Delphi does not support 64bit architecture). I'm writing received date on the memory(RAM) and after a while (unknown and depends on received data), write a block of received data (unknown size and depends on received data) into开发者_Go百科 hard disk and free the memory(RAM).

When I run the application, after some times, it throws "Out Of Memory" exception. What should I do to prevent this exception?

That's a very high data rate - I assume it's Mbits (100 MBytes/second). Only the fastest SSDs will be able to keep up, and that's only if your programming is 100% efficient. Check the table of sequential write speeds: http://www.anandtech.com/storage/showdoc.aspx?i=3702&p=9

If you can throw more RAM at the problem, I'd suggest going to 64-bit mode and allocating your entire RAM buffer all at once.