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CAS Timings De-Mystified, and other JEDEC Zins of DDR cRAMming...
Okay I have a little problem, What the heck are these CAS Timings and
How do I read them??? # Memory Size: 512MB # Memory Speed: 550MHz PC4400 ***# Memory CAS Latency: 3-4-4-8 # Memory Type: DDR Learn More # Pins: 184 == What does this mean: All ULTRA over-clocking memory modules deliver 5.0 nanosecond access times, and have been 100% tested and verified to operate at 400MHz in high-performance KT-400 motherboards (with ******* 2-3-3-7-T1 latency). What does this mean: ULTRA memory is SPD programmed at emerging JEDEC values for PC3200 rating. == # Memory Size: 512MB Total (2 x 256MB) # Memory Speed: 500MHz PC4000 ***# Memory CAS Latency: 3-4-4-8 # Memory Type: Dual Channel DDR Learn More # Pins: 184 == What does this mean: OCZ Gold Edition PC-4000 memory using state of the art HyperSpeed® technology is capable of achieving outrageous speeds of up to 500 MHz at *******CL 2.5-4-4-7. == # Memory Size: 256MB # Memory Speed: 500MHz PC4000 ***# Memory CAS Latency: 2.5-4-4-7 # Memory Type: DDR Learn More # Pins: 184 == # Memory Size: 512MB # Memory Speed: 433MHz PC3500 ***# Memory CAS Latency: 2-2-2-6-T1 # Memory Type: DDR Learn More # Pins: 184 == Okay, I think that is enough for now... I would like to understand how to read the (in my opinion) cryptic Memory CAS Latency (code?), any help would be most appreciated... Also, I would like to know what all this stuff is and how to "work it": DRAM Timing (ie.:By SPD | Manual ) DRAM CAS Latency (ie.:3 | 2.5 | 2 | 1.5 ) Bank Interleave (ie.isabled | 2 Bank | 4 Bank ) Precharge to Active(Trp) (ie.:2T | 3T | 4T | 5T ) Tras Non-DDR400/DDR400 (ie.:6T/8T | 7T/10T | 5T/6T | 8T/12T ) Active to CMD(Trcd) (ie.:2T | 3T | 4T | 5T ) DRAM Burst Length (ie.:4 | 8 ) DRAM Command Rate (ie.:2T Command | 1T Command ) DRAM Access Time (ie.:2T | 3T ) DRAM Queue Depth (ie.:2 Level | 4 Level | 3 Level ) tWTR for DDR400 ONLY (ie.:1T | 2T | 3T ) Write Recovery Time (ie.:2T | 3T) Thanks In Advance ~7~ |
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