The Apacer Real500 modules are intended to operate at 500MHz frequency, but with all the motherboards that we used (ASUS A8N-SLI, Abit AN8 Fatal1ty, etc) we got 400MHz running frequency as standard value. We had to change some BIOS settings to get the 500MHz frequency (2x250MHz, dual channel). We used the Abit motherboard, as before.
We used 3-3-3-8 timings and ran MemTest to check the stability of the system. After several error messages, we changed to the factory default timings (3-4-4-10) to get the memory running stable at 500MHz.
We re-ran some tests with the memory operating at 500MHz to see if there was any performance boost.
The Apacer Real500 showed their true value when running at 500MHz. Outstanding performance, even faster than the award winning Corsair XMS memory. This is the fastest DDR1 memory module that CDRinfo has tested. The only drawback is that you need to fiddle with the BIOS settings to get that high performance.