WinRAR Internal Benchmark	Source: RARLabs

This command generates random data, which contain specially introduced redundancy increasing load to processor and memory. Then data are passed through RAR compression and decompression algorithms and output of decompression algorithm is compared with source data. If any difference found, WinRAR reports "Errors found - Yes" in the command window. Also WinRAR displays a size of processed data and compression speed, current and resulting, in kilobytes per second. You may use the resulting speed value to compare RAR performance in different conditions.

WinRAR Internal Benchmark
Internal Benchmark	KB/s	Ranking
512MB System Memory	710
512MB System Memory 512MB ReadyBoost	780
512MB System Memory 1GB ReadyBoost	847
512MB System Memory 2GB ReadyBoost	898
512MB System Memory 4GB ReadyBoost	862
1GB System Memory	1013
1GB System Memory 1GB ReadyBoost	1115
1GB System Memory 2GB ReadyBoost	1107
1GB System Memory 4GB ReadyBoost	1112
2GB System Memory	1163
2GB System Memory 2GB ReadyBoost	1175
2GB System Memory 4GB ReadyBoost	1168
4GB System Memory	1173
4GB System Memory 4GB ReadyBoost	1184

WIth 512MB of system memory we finally see a good change from ReadyBoost! The baseline is 710 KB/s and with a 2GB ReadyBoost cache, throughput rises to 898 KB/s. Pretty good. With 1GB of memory we see some performance gains as well. As for the rest of the tests, the result is pretty nonexistent.

Windows Vista Boot Up Time	Source: Microsoft

This test is designed to see how long it takes for Microsoft Windows Vista to boot to desktop. Timing was done with a stop watch so it's not super precise, it will be good enough to test the effects of ReadyBoost.

Windows Vista Boot Up Time
Seconds	Seconds	Ranking
512MB System Memory	47
512MB System Memory 512MB ReadyBoost	44
512MB System Memory 1GB ReadyBoost	42
512MB System Memory 2GB ReadyBoost	40
512MB System Memory 4GB ReadyBoost	40
1GB System Memory	26
1GB System Memory 1GB ReadyBoost	26
1GB System Memory 2GB ReadyBoost	25
1GB System Memory 4GB ReadyBoost	25
2GB System Memory	25
2GB System Memory 2GB ReadyBoost	25
2GB System Memory 4GB ReadyBoost	25
4GB System Memory	25
4GB System Memory 4GB ReadyBoost	25

The last test of the day shows what if any impact ReadyBoost has on the boot time of a Vista computer. With a 2GB ReadyBoost drive installed in conjunction with 512MB of memory, boot up time was cut down by seven seconds. That in itself is significant and application load times within Windows was also noticeably faster too, that's something the other benchmarks don't really test. Reading between the lines, it is clear that Microsoft Vista works best with a minimum of 1GB RAM.