1.
The obtained results are given in the table below. The CPU in these tests worked at 3.2GHz. The memory frequency was set as close to 1066MHz as possible. The timings were locked at 4-4-4-12-8-30-8-8-8. Transaction Booster was set to Auto, and DRAM Static Read Control – to Enabled.
2.
In order to find out what the situation looks like on Asus P5K Deluxe mainboard, we tested the memory subsystem performance with the FSB frequency increment of 10MHz. the memory frequency in this session was set with the 4:5 FSB:Mem divider (this is the minimal divider available in the entire FSB frequency range). The CPU clock frequency multiplier was set to 8x. The memory timings were set manually at 5-5-5-15-11-42-10-10-10, so that the memory could work stably at maximum frequencies. Transaction Booster was set to Auto, DRAM Static Read Control – to Disabled.
3.
In conclusion to our extensive discussion I would like to say a few words to those Asus P5K Deluxe owners who for some reason believe that it changes FSB Strap at 500MHz. In reality there is no Strap changing whatsoever and cannot be. All tests that allegedly prove this statement haven’t been performed correctly. The thing is that if the DRAM Static Read Control parameter is set to Auto, the mainboard changes its value at this frequency. That is why the performance drops, which is erroneously considered to be caused by Strap changing. To eliminate this unpleasant effect, you should set DRAM Static Read Control to Enabled in the BIOS Setup.

*Question: Performance wise, should we set AUTO, Enable or Dissable for the DRAM Static Read Control. There's no doubt that with Transaction booster enabled 0 or 1, there is a significant performance increase. However, from my personal findings and with some of others, we'll have a problem upon booting with no post and screen when both DRAM Static Read Control set to Enable or Auto and Transaction Booster set to Enable 0 or 1. Only by dissabling the DRAM Static Read Control will remedy the problem.