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6/27/2025, 3:39:09 AM
>>105716958
1:1 mode is where the dram ,memory controller clock and data fabric clock are equal, technically 1:1:1
eg. 3600mt/s(1800mhz) = uclk 1800mhz = fclk 1800mhz
2:1 mode , is where the memory controller speed is halved,
eg 3600mt/s(1800mhz) = uclk 900mhz = fclk (asynchronous)
when in 2:1 mode with the uclk halved and the fclk is asynchronous, a significant latency penalty is incured ~15 ns , which is not worth it at all, as it requires extreme ddr4 speeds to overcome ( >5000mt/s)
1:1 mode is where the dram ,memory controller clock and data fabric clock are equal, technically 1:1:1
eg. 3600mt/s(1800mhz) = uclk 1800mhz = fclk 1800mhz
2:1 mode , is where the memory controller speed is halved,
eg 3600mt/s(1800mhz) = uclk 900mhz = fclk (asynchronous)
when in 2:1 mode with the uclk halved and the fclk is asynchronous, a significant latency penalty is incured ~15 ns , which is not worth it at all, as it requires extreme ddr4 speeds to overcome ( >5000mt/s)
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