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post #11 of 26
Quote:
Originally Posted by arekieh View Post
umm wow,
am i just an idiot,
or does anyone else not know what 1t and 2t are????
...are you just going to make a needless comment or are you going to elaborate?
post #12 of 26
Quote:
Originally Posted by killa_concept View Post
...are you just going to make a needless comment or are you going to elaborate?
???
the question is,
what is 1T and what is 2T
sorry if it wasnt obvious
    
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post #13 of 26
Command Rate is the amount of command (cycles) it takes for a RAM module to react to a command from a program or user. 2T and 1T are how most modern modules are classified. 1T is the faster rate. Think of it this way. When you click to do something in Guild Wars, that command is issued to the processor and depending on availability, it is issued to the RAM at some point. That information reaches the RAM, but it takes either 1 cycle (hertz) or 2 cycles (hertz) to trigger a reaction. Now, considering DDR2-800 runs @400MHz x 2 as explained below, that means that it would take approx a 8th of a millionth of a second for the RAM to respond if the command rate was 1T, and a 4th of a millionth of a second if it was 2T. Sounds like a very small number, but add it up... If Guild Wars issues 600 million commands per second to the processor, the RAM has to do that. That can mean the difference between 20 frames per second (FPS) and 40 FPS. Now it sounds more important right? If you are comparing two modules of RAM, one having a 1T and the other having a 2T command rate, and your budget can be pushed or allows for the 1T, go with that. Motherboard settings can be tweaked to allow for faster performance in 40% of the applications you will use because of command rate.

Ref : http://guildwars.incgamers.com/forum.../t-442997.html
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post #14 of 26
Quote:
Originally Posted by arekieh View Post
???
the question is,
what is 1T and what is 2T
sorry if it wasnt obvious
and then the question became "are you going to elaborate?"

which you haven't

never mind it got elaborated
post #15 of 26
Quote:
Originally Posted by arekieh View Post
???
the question is,
what is 1T and what is 2T
sorry if it wasnt obvious
hang on !!!!!!!

he's asking what they are or what they do ....how is he supposed to ''elaborate''
on a subject he dosen't know about .....
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post #16 of 26
Thread Starter 
Quote:
Originally Posted by orbiter View Post
Command Rate is the amount of command (cycles) it takes for a RAM module to react to a command from a program or user. 2T and 1T are how most modern modules are classified. 1T is the faster rate. Think of it this way. When you click to do something in Guild Wars, that command is issued to the processor and depending on availability, it is issued to the RAM at some point. That information reaches the RAM, but it takes either 1 cycle (hertz) or 2 cycles (hertz) to trigger a reaction. Now, considering DDR2-800 runs @400MHz x 2 as explained below, that means that it would take approx a 8th of a millionth of a second for the RAM to respond if the command rate was 1T, and a 4th of a millionth of a second if it was 2T. Sounds like a very small number, but add it up... If Guild Wars issues 600 million commands per second to the processor, the RAM has to do that. That can mean the difference between 20 frames per second (FPS) and 40 FPS. Now it sounds more important right? If you are comparing two modules of RAM, one having a 1T and the other having a 2T command rate, and your budget can be pushed or allows for the 1T, go with that. Motherboard settings can be tweaked to allow for faster performance in 40% of the applications you will use because of command rate.

Ref : http://guildwars.incgamers.com/forum.../t-442997.html

Thanks Orbiter, good info.
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post #17 of 26
No Probs
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post #18 of 26
Quote:
Originally Posted by orbiter View Post
Command Rate is the amount of command (cycles) it takes for a RAM module to react to a command from a program or user. 2T and 1T are how most modern modules are classified. 1T is the faster rate. Think of it this way. When you click to do something in Guild Wars, that command is issued to the processor and depending on availability, it is issued to the RAM at some point. That information reaches the RAM, but it takes either 1 cycle (hertz) or 2 cycles (hertz) to trigger a reaction. Now, considering DDR2-800 runs @400MHz x 2 as explained below, that means that it would take approx a 8th of a millionth of a second for the RAM to respond if the command rate was 1T, and a 4th of a millionth of a second if it was 2T. Sounds like a very small number, but add it up... If Guild Wars issues 600 million commands per second to the processor, the RAM has to do that. That can mean the difference between 20 frames per second (FPS) and 40 FPS. Now it sounds more important right? If you are comparing two modules of RAM, one having a 1T and the other having a 2T command rate, and your budget can be pushed or allows for the 1T, go with that. Motherboard settings can be tweaked to allow for faster performance in 40% of the applications you will use because of command rate.

Ref : http://guildwars.incgamers.com/forum.../t-442997.html
Thank you very mch +rep, great explanation,
However one more question, how do you find out if ur ram is 1T or 2T??
and once again, sorry if this is a retarded question, but i truly have no clue
    
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post #19 of 26
Quote:
Originally Posted by arekieh View Post
Thank you very mch +rep, great explanation,
However one more question, how do you find out if ur ram is 1T or 2T??
and once again, sorry if this is a retarded question, but i truly have no clue
It might say on the actual sticks themselves, for example mine says 4-5-4-11 2T, and you can always check it in the BIOS.
    
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post #20 of 26
Quote:
Originally Posted by gamer7 View Post
I ran the crysis benchmark tool at medium res, medium settings to get an idea of how much difference there is between 1t and 2t.

Same exact same settings, clocks and timings at 5-5-5-15 with g-skill ddr2 800, only variable was 1t or 2t did 3 runs these are the averages:

1t Average fps: 27.7

2t Average fps: 27.685

I honeslty expected like a 5% hit at 2t. But given these results I'd say it's a very small difference especially since you might get away with higher clocks with 2t.
Few games are going to show a noticeable performance difference from altering memory speed or timings. Crysis will probably show one of the least.

All other things being equal, you could probably go from single channel DDR2 533 @ 5-5-5-15-2 to dual channel 1066 4-4-4-12-T1 before you saw a 5% difference in Crysis on medium.
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