What command rate should I use?

Published by Charlie Davidson on

What command rate should I use?

The command rate determines whether a chip select can be executed in a single clock or whether it needs two or more clocks. Typical DDR2 memory runs at a command rate of 2T, but a 1T command rate can yield as much of a gain in performance as any other adjustment.

Should I disable gear down mode?

Power Down Mode doesn’t necessarily improve performance, but it can improve memory stability. I would leave this disabled if you are at all overclocking your RAM.

Is 2T faster than 1T?

In theory 2T should be noticable slower than 1T but on new chipsets there is almost no difference ( other than you can find in some benchmarks ). Most producers set profiles to 2T because of compatibility.

What is command rate on ram?

Command rate – is the delay (in clock cycles) between when chip select is asserted (i.e. the RAM is selected) and commands (i.e. Activate Row) can be issued to the RAM.

What does power down mode do?

Power Down Enable is a power saving feature that powers doen the ram slots to a lower voltage when the computer is not in use. It causes lots of compatibility problems, that’s why it is disabled by default.

What is 1t and 2t for DRAM?

The 1t/2t is how many clocks the memory controller spends sending a given command to the ram. 1t means that the controller sends the command on one clock cycle, 2t means it sends it for two clock cycles. The end result is that running 2t instead of 1t is like adding 1 to nearly every ram timing.

Is my RAM 1t or 2t?

Is 1t the same as 24 months?

While 24 months is the same as two years, when it comes to children’s clothes, it isn’t. And it confuses parents everywhere. These sizes are designed to fit a child that is up to the top end of the age range.

What is the command rate?

Command rate – is the delay (in clock cycles) between when chip select is asserted (i.e. the RAM is selected) and commands (i.e. Activate Row) can be issued to the RAM. Typical values are 1T (one clock cycle) and 2T (two clock cycles). Command Rate: Also called CPC (Command Per Clock).

What does 2N mean in RAM?

command rate
2N is the command rate (CR) and is the time it takes a signal in memory to be issued to a ram module. A lot of memory now will only run properly at a 2T or 2N command rate, 1T or 1N rates can be attaind and do perform better however stability issues can arise with these settings.

What is XFR Ryzen?

XFR 1. In AMD CPUs XFR, or eXtended Frequency Range, is an automated overclocking feature in AMD’s Zen CPU architecture first introduced on AMD’s Ryzen CPUs. For AMD Zen based CPUs that have XFR enabled, XFR will boost clock frequencies above the advertised turbo frequency based on the capabilities of the CPU cooler.

What is VDDP voltage?

As far as I know the cLDO VDDP is the voltage to the physical-layer interface that converts information from the memory controllers to a format the DDR4 memory modules can understand.

Which is better for gaming 1T or 2t?

First up is the influence of the Command Rate setting, it’s a comparison of results using the 1T and 2T. We use our normal gaming tiles with normal image quality settings like you use them at home. So does a command rate of 1T help over 2T?: The average performance increase is ~3.5% for 1T Command Rate over 2T.

What’s the difference between 1T and 2T memory?

Postulates, ideas, opinions etc. not much else, but an interesting read IMO! 1T gives roughly 18% memory performance over 2T, just FYI. be interested in hearing your latency results at 2T vs 1T….

What’s the difference between timings and command rates?

Timings are as valuable as always, it’s just that the improvements they make pale into insignificance when compared with the improvements another 200 or so MHz made. If you have come from the celeron 133 era as I have, it can be a tricky one to get your head round.

How often should I change my command rate?

If you’re lucky maybe 5% _total_ on a specific app after dialing in every setting from default. Also worth noting is many of the timings should be changed in lockstep with others, not sure if that korean reviewer did that (doubtfull). Some are actually frequency dependant as well (considering tburst).

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