PRJ Posted December 24, 2006 Share Posted December 24, 2006 I have these Corsair TWINX2048-4400PRO that are running in a DFI SLI-DR Venus board ( Bios: 406-BTA ) I Just put in a FX-60 that goes stable @ up to 3080 MHz, so these memory are perfekt for the job, rated at 275 ( 3-4-4-8 2T ) FSB 275 1:1 x 11 = 3025 MHz But.... I cant get the memory to get stable in 3D applications at that speed and have to use 180 divider. I am using either default or Auto in all other settings than the rated timings, settings look like this... DRAM Frequency (Mhz)= 180 Command per clock (CPC)= Disable CAS Latency control (TCL) = 3.0 RAS# TO CAS# delay (TRCD)= 4 MinRAS# active time (TRAS)= 8 Row precharge time (TRP)= 4 Row cycle time (TRC)= Row refresh cycle time (TRFC)= Row to row delay (TRRD)= Write recovery time (TWR)= Write to read delay (TWTR)= Read to write delay (TRWT)= Refresh period (TREF)= Odd Divisor Correct= DRAM bank enterleave= DQS skew control= DQS skew value= DRAM drive strength= DRAM data drive strength= Max async latency= DRAM responce time= Read preamble time= Idlecycle limit= Dynamic counter= R/W Queue bypass= Bypass max= 32 byte granalarity= Nothing seems to make them 3D stable at 275 1:1 Do I have a bad module?? ( Lot nr. 0614266-1 ) Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 26, 2006 Corsair Employees Share Posted December 26, 2006 What happens if you lower the CPU Freq to 265-270 Mhz 1-1 with the memory? And have you tested the modules one at a time with http://www.memtest.org? Link to comment Share on other sites More sharing options...
PRJ Posted December 26, 2006 Author Share Posted December 26, 2006 Hi Ram Guy Welcome back from a short x-mas holiday... I havent tested much @ arround 265-270 1:1 since i cant use that setting, instead I have tested quite a bit at around 251 reason being ( 274 x 11 Div 180 = 3014 MHz / DDR502 ) This is highest 3D stable bandwidth settings @ 251 DRAM Frequency (Mhz)= 180 Command per clock (CPC)= Enabled CAS Latency control (TCL) = 3.0 RAS# TO CAS# delay (TRCD)= 3 MinRAS# active time (TRAS)= 5 Row precharge time (TRP)= 2 Row cycle time (TRC)= 7 Row refresh cycle time (TRFC)= 14 Row to row delay (TRRD)= 3 Write recovery time (TWR)= 2 Write to read delay (TWTR)= 1 Read to write delay (TRWT)= 3 Refresh period (TREF)= 3120 Odd Divisor Correct= Disable DRAM bank enterleave= Enable DQS skew control= Auto DQS skew value= 0 DRAM drive strength= Auto DRAM data drive strength= Level 1 ( reduce 50% ) Max async latency= 08.0 ns DRAM responce time= Normal Read preamble time= 05.5 ns Idlecycle limit= 016 Cycles Dynamic counter= Disable R/W Queue bypass= 16 X Bypass max= 7 X 32 byte granalarity= Disable ( 4 Bursts ) Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 27, 2006 Corsair Employees Share Posted December 27, 2006 There are a few settings that should be set accordingly! DRAM Frequency (Mhz)= 180 Command per clock (CPC)= Disabled CAS Latency control (TCL) = 3.0 RAS# TO CAS# delay (TRCD)= 4 MinRAS# active time (TRAS)= 8 Row precharge time (TRP)= 4 Row cycle time (TRC)= Bios Defaul or Auto Row refresh cycle time (TRFC)= Bios Defaul or Auto but no less than 15 Row to row delay (TRRD)= Bios Defaul or Auto Write recovery time (TWR)= Bios Defaul or Auto but no lees than 5 Write to read delay (TWTR)= Bios Defaul or Auto Read to write delay (TRWT)= Bios Defaul or Auto Refresh period (TREF)= Bios Defaul or Auto Link to comment Share on other sites More sharing options...
PRJ Posted December 27, 2006 Author Share Posted December 27, 2006 OK we are aiming for 275 again, here are default settings DRAM Frequency (Mhz)= 200 Command per clock (CPC)= Disabled CAS Latency control (TCL) = 3.0 RAS# TO CAS# delay (TRCD)= 4 MinRAS# active time (TRAS)= 8 Row precharge time (TRP)= 4 Row cycle time (TRC)= 13 Row refresh cycle time (TRFC)= 16 Row to row delay (TRRD)= 3 Write recovery time (TWR)= 3 Write to read delay (TWTR)= 2 Read to write delay (TRWT)= 3 Refresh period (TREF)= 3120 Odd Divisor Correct= Disable DRAM bank enterleave= Enable DQS skew control= Auto DQS skew value= 0 DRAM drive strength= Auto DRAM data drive strength= Auto Max async latency= Auto DRAM responce time= Normal Read preamble time= Auto Idlecycle limit= 256 Cycles Dynamic counter= Disable R/W Queue bypass= 16 X Bypass max= 4 X 32 byte granalarity= Disable ( 4 Bursts ) They dont work, and they are very loose timings. You suggest TWR @ 5 but TWR only goes upto 3 PRJ Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 27, 2006 Corsair Employees Share Posted December 27, 2006 Let's get them replaced. Please follow the link in my signature “I think I have a bad part! Or *New* Tech Support Express” and we will be happy to replace them or it, please note that you are posting from the forum! Link to comment Share on other sites More sharing options...
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