The basic limitations are your scanner, computer and the selected repository. If you have a fast scanner with high throughput and you have a fast multi-core computer, ccScan should keep up with the scanner.  ccScan makes use of the power of your computer and each of its processor cores. It will run faster on a dual core processor than a single core processor. The same is true of triple or quad core processors. If you need maximum performance and have a very fast scanner (100 ppm, 200 ipm or higher), expect to read barcodes and run OCR, then use a very fast multi-core computer (2.4 GHz processor speed or more) with 4 GB RAM.