SPD timeings

[dwgwilliams]

Hi,can you explain SPD timmings and then how to overclock your memory?
Thanks dwgwilliams

<font color=blue><b>British and proud of it</b></font color=blue>

 

[fastingsetiman]

Hi. Don't know a darn thing about it. SPD= Serial Presence Detect; an 8 pin module on the memory chip pcb that sends info to the bios.../search SPD timings

Check this out



12/08/02 : Now running at 10x170MHz. Boots at 11,5x150 / 10,5x166 / 10x175 but windows hangs. Either the 1800Xp won't go over 1705MHz (at least at 1.85V) or the Hard drives have a problem following ;-). Next will be some more RAM tweaking I'm guessing that after a burn in period I can get 2T,5T,2T.

Athlon Xp XFX GF4 Ti4200 64MB Detonator driver Via 4 in 1 BENCHMARKS
Multi FSB Speed Vcore RAM Timings GPU MEM Bios 3DMark Comanche 4 1024x768 PCMark2002
(MHz) (MHz) (V) (MHz) (MHz) 2001SE Fps avg Tris/s avg CPU RAM HD1 HD2
11,5 133 1540 1,73 133,SPD,2,2,5,2,4,4,en,ultra 250 446 4.25.00.31.28 28.32 4.38 8945 4548 3100 419 419
11,5 133 1540 1,73 133,SPD,2,2,5,2,4,4,en,ultra 250 500 4.25.00.31.28 28.32 4.38 9345 28.49 5.675.093 4626 3185 430 430
11,5 133 1540 1,73 133,SPD,2,2,5,2,4,4,en,ultra 250 513 4.25.00.28.23 28.32 4.38 9330
11,5 133 1540 1,73 133,SPD,2,2,5,2,4,4,en,ultra 250 513 4.25.00.28.23 29.42 4.38 9495 35.09 6.990.313
11,5 133 1540 1,73 133,SPD,2,2,5,2,4,4,en,ultra 275 550 4.25.00.28.23 29.42 4.38 9643 35.26 7.023.076 4562 3126 452 452
11,5 140 1615 1,73 140,SPD,2,2,5,2,4,4,en,ultra 275 550 4.25.00.28.23 29.42 4.38 10278 37.02 7.374.634 4819 3368 391 391
11,5 140 1615 1,73 140,SPD,2,2,5,2,4,4,en,ultra 290 580 4.25.00.28.23 29.42 4.38 10498 37.06 7.382.039 4810 3319 446 446
11,5 140 1615 1,73 140,SPD,2,2,5,2,4,4,en,ultra 300 600 4.25.00.28.23 29.42 4.38 10603 37.11 7.391.774 4821 3330 451 451
11,5 140 1615 1,73 140,SPD,2,2,5,2,4,4,en,ultra 300 600 4.25.00.28.23 29.42 4.40 10646 37.43 7.456.401 4864 3356 450 450
11,5 145 1673 1,79 145,SPD,2,2,5,2,4,4,en,ultra 300 600 4.25.00.28.23 29.42 4.40 10839 38.89 7.747.883 5042 3535 415 415
11,5 145 1673 1,79 145,HCLK,2,2,5,2,4,4,en,ultra 300 600 4.25.00.28.23 29.42 4.40 10896 38.68 7.705.791 5050 3545 384 384
11,5 145 1673 1,79 145,HCLK,2,2,5,2,4,4,en,ultra 300 625 4.25.00.28.23 29.42 4.40 11014 38.72 7.712.211 5045 3504 446 446
11,5 145 1673 1,79 145,HCLK,2,2,5,2,4,4,en,ultra 300 625 4.25.00.28.23 30.82 4.40 10985 38.94 7.757.384 5048 3530 391 391
10,5 160 1685 1,85 160,HCLK,2.5,3,6,3,4,4,dis,normal 300 625 4.25.00.28.23 30.82 4.40 10516 37.78 7.525.389 5030 3396 447 447
10 170 1705 1,85 170,HCLK,2.5,3,6,3,4,4,dis,normal 300 625 4.25.00.28.23 30.82 4.40 10806
10 170 1705 1,85 170,HCLK,2.5,3,6,3,4,4,en,normal 300 625 4.25.00.28.23 30.82 4.40 10960
10 170 1705 1,85 170,HCLK,2,3,6,3,4,4,en,normal 300 625 4.25.00.28.23 30.82 4.40 11144 40.05 7.978.176 5159 3696 441 441
10 166 1670 1,85 166,HCLK,2,3,6,3,4,4,en,normal 300 625 4.25.00.28.23 30.82 4.40 10946 39.60 7.888.055 5053 3624 385 385
10 166 1670 1,85 166,HCLK,2,3,6,3,4,4,en,normal 300 625 4.25.00.28.23 40.41 4.40 11679 37.27 7.424.110 5054 4004 446 446
10 166 1670 1,85 166,HCLK,2,3,6,3,4,4,en,normal 300 625 4.25.00.28.23 40.41 4.43 11709 37.28 7.425.375 5050 4040 442 442
10 166 1670 1,85 166,HCLK,2,3,6,3,4,4,en,normal 300 625 4.25.00.28.23 40.72 4.43 11785 37.50 7.470.306 5044 3979 450 450
Installed 2 new Maxtor 30GB 6E030L0 Harddisks as striping RAID array
10 166 1670 1,85 166,HCLK,2,3,6,3,4,4,en,normal 300 625 4.25.00.28.23 40.72 4.43 5034 4010 1191 450
Installed new Seagate 60GB ST360021A Harddisk
10 166 1670 1,85 166,HCLK,2,3,6,3,4,4,en,normal 300 625 4.25.00.28.23 40.72 4.43 5034 4010 1191 830

Bios Settings for KT3 Ultra ARU :

Advanced Chipset Features :

DRAM Timing Control :

Configure SDRAM Timing by : USER
SDRAM Frequency : HCLK
SDRAM CAS Latency : 2
Row Prechange Time : 3T
RAS Pulse Width : 6T
RAS to CAS Delay : 3T
SDRAM Bank Interleave : 4
SDRAM Burt Length : 4QW
SDRAM 1T command : Enabled
Fast Command : Normal
AGP Timing Control :

AGP mode : 4X
AGP comp. driving : Auto
AGP Fast Write : Enabled
AGP Aperture Size : 128MB
AGP Master 1 W/S Write : Disabled
AGP Master 1 W/S Read : Disabled
AGP Read Synchronization : Disabled
PCI Delay Transaction : DISABLED


came out sorta jumbled, but that was at one of the searches called " Overclocking ". Might be rubbish ", but I don't like seeing someone with 0 replies