CAS Latency 5 or 6???

[EarlZ]

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BTW,

Im also using a Kingstone value ram DDR2-800Mhz 6-6-6-18, been running it at 850Mhz 5-5-5-15 1.95 ( 8GB total ) and i have no stability issues with it what so ever.

[dmelsie]

naa paman lain value sa ram gawas ana 5-5-5-15 naa pa sumpay ana hehehe
dili gyud meaning na if 5-5-5-15 pas pas na gyud e consider pod ang uban values like akoa na bantayan sa kingston 127ns to isa ka value kato sa corsair kay 105ns

[poldopunk]

Just a little correction to EarlZ, its actually CAS Latency (Column Address Strobe). The first and most responsive in memory latencies. Think of your memory as an excel file where there are rows and colums, now think of CAS latency as the main column.

Basically, the numbers you see printed on the memory or its packaging are the following:

tCAS-tRCD-tRP-tRAS CMD

Ayaw nalang ipa elaborate nako kay naka proxy ra ko sa office ron because of a dead mobo but they're the following: CAS (Column Address Strobe), RCD (RAS to CAS Delay), RP (RAS Precharge), RAS (Row Address Strobe) and CMD (Command Rate -- 1T, 2T, etc.)

Generally, getting a memory with lower latencies with high bandwidth = better performance but if you compare it with SDRAM generations, its not necessarily so. You may have noticed that the DDR3 SDRAMs have latencies as high as 7 or 9 as compared to DDR2-800s that can go as low as CAS5 or CAS4, most people would think that obviously the DDR2-800 is faster because its got lower latencies but comparing the amount of data they can move, the DDR3 is the winner. If you add their total delays versus the data they can move, you'll basically see the difference.</p>

[EarlZ]

[QUOTE=poldopunk;4263608]Just a little correction to EarlZ, its actually CAS Latency (Column Address Strobe).

CL ( Cache Latency ) is the general term for all timings, but yes if you are into specifics the first and important timing is the CAS latency of the entire CL chain.

[poldopunk]

^ i see what you mean now. i thought you were responding to the CAS 5 or CAS 6 from the thread title.

[kabz]

now its more clearer hahay daghan na jud ko nakat-onan ninyong duha mga sis........ lolz okay going back to the topic mga bro so compare daw kuno ang 1066 to 800mhz asa man jud ang pas2x ani bro.... im a little bit confuse about the smaller latencies u will get the better...

[EarlZ]

now its more clearer hahay daghan na jud ko nakat-onan ninyong duha mga sis........ lolz okay going back to the topic mga bro so compare daw kuno ang 1066 to 800mhz asa man jud ang pas2x ani bro.... im a little bit confuse about the smaller latencies u will get the better...

Depende pila sad ang latency sa 1066 and 800

[poldopunk]

sakto si EarlZ

assuming you have overclocking RAMs that can go 1066 (533) @ CAS 6 or 7 but if you set it as 800 (400 MHz) that can go as low as CAS4, I would prefer the faster response over memory bandwidth in this case.

do a benchmark using SuperPI since this tests memory bandwidth (single core on processor), try to test with higher memory bandwidth versus lower memory latency. the delays in seconds/minutes should be clear enough unsa imo preferred, there are some programs though that prefer faster response over more data bandwidth and vice versa.

[kabz]

ah ic thanks kaau sir........

[tiger_yap8]

thanks sa inyong mga reply bro..