What is a good tRC?

What is a good tRC?

tRC (Bank Cycle Time) – [Auto, 1 ~ 63] This is arguably one of the most important timings when it comes to memory performance with NVIDIA chipsets. The rule when it comes to tRC is you should set it no lower than tCL + tRAS + 2.

What is tRAS in RAM?

Row Active Time (tRAS) Also known as “Activate to Precharge Delay” or “Minimum RAS Active Time”, the tRAS is the minimum number of clock cycles required between a row active command and issuing the precharge command. This overlaps with the tRCD, and it is simple tRCD+CL in SDRAM modules.

What is tRC in RAM timing?

However at the same time the datasheet declares the Row Cycle Time (tRC) to be 45.75ns(min.) and the Row Active Time (tRAS) to be 29.125ns(min.). The frequency of 1200Mhz dictates a 0.83ns cycle, which means the tRC translates to roughly 55 cycles and tRAS to 35 cycles.

Is higher CAS latency better?

Is a Higher or Lower CAS Latency Better? CAS Latency definitely affects performance. The lower the number, the lower the latency and, hence, the better the performance. The RAM having a lower CAS Latency number will perform better.

How do I get tRFC?

Formula is: time (ns) = cycles * 2000 / DataRate. tRFC time in units of ns is the outermost left and right columns.

What is CAS and RAS latency?

The RAS to CAS delay determines the time between memory accessing RAS (Row Address Strobe) and CAS (Column Address Strobe). The lower the number, the better, but tRCD timing plays a less significant role in overall performance compared to CAS latency.

What is DRAM tCL?

CAS Latency (tCL/tCAS): This is the number of cycles it takes to read the first bit of memory from a DRAM with the correct row already open. Unlike the other numbers, this is not a maximum, but an exact number that must be agreed on between the memory controller and the memory.”

What is RAS and CAS in DDR?

RAS : Row Address Strobe, a terminology holdover from asynchronous DRAM. CAS : Column Address Strobe, a terminology holdover from asynchronous DRAM. TWR : Write Recovery Time, the time that must elapse between the last write command to a row and precharging it.

How is TRC calculated?

The OSHA Total Case Rate (or Total Recordable Injury Rate) is calculated by multiplying the number of OSHA recordable cases by 200,000, and then dividing that number by the number of employee labor hours at the company.

Is 16 CAS latency good?

DDR4 3200 CAS 16 is still well within the range of ‘fine’ but it’s slower. You’d have to pay attention to both numbers.

Does tRFC scale with voltage?

tRFC doesn’t scale with voltage for Micron. The main way to bridge the performance gap is to raise tREFI, which you cannot do on AMD. The performance gains from raising tREFI are significantly higher than lowering tRFC for Micron.