ericware

Well .. i have been seeing so many reviews and threads that corsair twinx1024-3200XL or 2x xms3208 v1.2 can reach 300Mhz @ 2.5-4-4-7 or even more .. but mine stuck at 260Mhz i can not push my ram further more .. i had tried to add more vdimm but it didn't work .. everytime i set 2.5-..-..-.. or ..-4-..-..-.. my pc can't boot at all even hang da bios .. and my purpose is to hit 300Mhz .. so i need any suggestion from you all who have experiences in it .. thankz

eva2000

sounds like same prob as Minnyboy here 1GB Kit Corsair TwinX 3200XL v1.2 niggles??

best to go and read my guide at http://i4memory.com/AMD64 and test your memory thoroughly as per instructions at http://i4memory.com/AMD64

Unfortunately, i never seen XMS3200XL do 300mhz at all unless you shove >3.1v vdimm which will kill TCCD memory such as this

i've tried 18x pairs of 2x512MB TCCD from gskill, centon and patriot and only 2 pairs manage 300mhz stable so it isn't as easy as you'd think...

i think average for 3200XL is like 275-285mhz at 2.8-2.9v max

ericware

Thankz for da quick reply .. actually since i used my old 2.4c i always follow your threads haha .. that's da main reason i join this forum .. so of coz i have read your overclocking guide but still i can not push more than 260 .. ok you said "i think average for 3200XL is like 275-285mhz at 2.8-2.9v max" then can you tell me what timing did you use to test it? since my fsb runs at 280 so i can aim 280Mhz for my corsair and sorry for da noob question .. but i always run my ram at 3.0 or 3.1 becoz i set some setting lower like drive strength etc etc is that able to kill my ram?

eva2000

typo mean never seen not used XMS3200XL heh

it's trial and error but try

chipset = 1.6v
LDT = 1.3v
LDT 3x

CPC = Enabled
CAS Latency(CL) = 2.5 or 3
RAS to CAS(Trcd) = 3 or 4
Min RAS# Active time(Tras) = 7 or 8 or 10
Row Precharge Time(Trp) = 3 or 4
Row Cycle Time(Trc) = AUTO, 7 to 16
Row Refresh Cycle Time(Trfc) = AUTO, 14 to 24
Row to Row Delay(Trrd) = 2
Write Recovery Time(Twr) = 2
Write to Read Delay(Twtr) = 2
Read to Write Delay(Trwt) = 3
Refresh Period (Tref) = try all combinations but start with 3072, 3684, 4708, 1816, 0648
Write CAS Latency(Twcl) = Auto or 1
DRAM Bank Interleave = Enabled or Disabled
Skew = AUTO
Skew Value = 0
DRAM Drive Strength = try all combinations
DRAM Data Drive Strength = try all combinations
Max Async Latency = 8ns
DDRAM Response Time = Normal or Fast
Read Preamble Time = 5ns or 5.5ns
Idle Cycle Limit = 16 or 256clks
Dynamic Counter = Enabled or Disabled
R/W Queue Bypass = 16x
Bypass Max = 7x
32 byte Granularity = Disable(8burst)

to start with and use my guide to test in memtest and then windows with apps suggested

ericware

thankz .. i'm gonna try those setting now .. thankz a lot eva .. you are da best

ericware

Still can not more than 260Mhz even 265Mhz .. i have confusion here .. i ran my ram @ 260Mhz 2-3-3-5 with 3.0v it's stable .. and i tried to run 260Mhz 2.5-4-4-8 it still required 3.0v what happen? well for make sure didn't you use XL in this thread http://www.houseofhelp.com/forums/sh...light=abit+ai7

eva2000

looks like that's max of your ram..

ah yes i did try XMS3200XL totally forgot about my AI7 testing

but that was v1.1 no BP PCB and both pairs were faulty it seemed... but never tried them on AMD64 only s478 Intel.

break

wow... I didn't think it was that bad.

Makes me feel a whole lot better about my cheap 3200c2 that does 290mhz stable with 2.9v and no active cooling (and both memory sticks actually have to sit in adjacent slots too!)