Found the place in the K10 dev doc. MaxAsyncLatency is labeld MaxRdLatency in the doc (verified it with wprcedit). Chapter 2.8.7.8.4 describs how to calculate the value used during ddr2 training and a method to optimize the value after dram training. In case you are interested and don't already know.
The value varies up to 2ns between reboots here that makes ~100 MB/s difference in everst mem read.
44 seems to be the max i can use here. I gain ~300 MB/s in mem read compared to the 50ns the bios detects.
Thank you for the mem-tuning link, gona try that method soon.
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