How do i read memory latency?
How do i read memory latency?
I'm checking various 32GB kits for my 7800x3D. Advice suggests focusing on 6000MHz C32/30 models. Understanding memory latency is key—when using a C30, aim for kits with values near "30."
The memory timings indicate the clock speed in cycles per second. CL 30 signifies a CAS Latency of 30 cycles. The real performance of DDR5-6000 operates at 6000 MHz, which translates to a frequency where speed and timing closely align. Converting 3000 MHz yields approximately 3 billion cycles per second; dividing by 30 gives roughly 100 million cycles per second. At 1 billion cycles per second, that equals about 0.001 seconds or 10 nanoseconds. Therefore, the actual CAS Latency is around 10 nanoseconds. Generally, smaller numbers in RAM timings are preferable, though this comparison depends on the clock speed. DDR4-3200 CL16, DDR5-6400 CL32, DDR5-6000 CL30, and DDR3-1600 CL8 all match in actual CAS Latency, making the nanosecond value the key factor.
When discussing latency, the smaller the number, the better. You're advised to seek kits with a CL of 30 since they typically offer strong value for money. If you spot a lower-numbered kit that performs better, it's probably too costly for the extra performance it provides.
You hail from a global area, and affordable kits are commonly accessible.
Yes, that's correct. You wanted it simple, and the previous part was already addressed.
SPD latency refers to the actual time it takes for a signal to travel from the source to the destination, while tested latency is the measured value during evaluation or testing.