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What is t1 and t2?

post #1 of 14
Thread Starter 
I see people talking about this a lot for memory

whats the difference and what does it mean?
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post #2 of 14
http://www.overclock.net/amd-memory/...ate-there.html Read this thread
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post #3 of 14
Thread Starter 
thank you, but that doesn't really explain WHTA it is.


so can ANY ram run at T1
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post #4 of 14
Right try this link its def more in depth http://www.dfi-street.com/forum/show...79&postcount=4

1T refers to the "command per clock"

Most memory should run 1T at stock timings and frequencies but not all can run 1T when overclocked (including mine)

Edit: Blatant plagerism.

Command Per Clock(CPC)

Settings: Auto, Enable(1T), Disable(2T)

Command Per Clock(CPC) is also called Command Rate. It may be best in some instances to Disable (2T) w/ 2x512 RAM modules. It has a large Influence on Bandwidth/Stability.

From Adrian Wong’s site: http://www.rojakpot.com/
“This BIOS feature allows you to select the delay between the assertion of the Chip Select signal till the time the memory controller starts sending commands to the memory bank. The lower the value, the sooner the memory controller can send commands out to the activated memory bank. When this feature is enabled, the memory controller will only insert a command delay of one clock cycle or 1T. When this feature is disabled, the memory controller will insert a command delay of two clock cycles or 2T. The Auto option allows the memory controller to use the memory module's SPD value for command delay. If the SDRAM command delay is too long, it can reduce performance by unnecessarily preventing the memory controller from issuing the commands sooner. However, if the SDRAM command delay is too short, the memory controller may not be able to translate the addresses in time and the "bad commands" that result will cause data loss and corruption. It is recommended that you try enabling SDRAM 1T Command for better memory performance. But if you face stability issues, disable this BIOS feature."

Hope you get the picture
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post #5 of 14
sometimes enabling 2T can provide stability where 1T could not. the only difference is the decrease in memory bandwidth, but most real world applications dont require so much bandwidth. do whatever it takes to get those MHz up. in the AMD world, MHz is king.
    
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post #6 of 14
Thread Starter 
so all ram can run at T1


and the 1 is just like ram timings right? the lower the better


so always try for T1 if you can't try T2 to get more out of it?

but T1 is the fastest right?
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post #7 of 14
Quote:
Originally Posted by xsabrewulf
so all ram can run at T1


and the 1 is just like ram timings right? the lower the better


so always try for T1 if you can't try T2 to get more out of it?

but T1 is the fastest right?
1. Most of the time (as long as it is compatible with the motherboard)

2. Yes lower is better

3.T1 is fastest

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post #8 of 14
Basicly yes
    
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post #9 of 14
T1 is fastest, but Like we have had polls about before. how much of a difference Can vary from system to system. Some ram will also run better on t2 than t1. TCCD for example, will hit 300+ on T2, it wont hit 260 on T1, you gain so much more in clock speeds that it out weighs the performance gain from the T1.
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post #10 of 14
Thread Starter 
Does anyone know if the ram I have supports T1? and mobo
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