jimmil43 Posted March 20, 2006 Posted March 20, 2006 I purchased 2g of OCZ PC4000 Gold GTX memory and now have it running in my machine with the stock memory settings. My question is if I want to run it at the PC4000 rate, FSB 250 does this mean I'm OCing? Where can I find more info for this? I tried to use some settings from the OCZ forum but I can't seem to unlock the CPU voltage and other voltages. Does this require that I use a different BIOS? I tried to do a search but apparently I'm using the wrong search criteria. Share this post Link to post Share on other sites More sharing options...
SageI Posted March 20, 2006 Posted March 20, 2006 You will not be O/Cing mem but you will be O/Cing CPU. Make sure you use default mem timingings. When you first boot you should see 3,4,3,8 as timings. You will have to go into BIOS and increase voltage on CPU most likely to run at 250 FSB. VDIMM mem voltage should be around 2.75V Share this post Link to post Share on other sites More sharing options...
jimmil43 Posted March 20, 2006 Posted March 20, 2006 You will not be O/Cing mem but you will be O/Cing CPU. Make sure you use default mem timingings. When you first boot you should see 3,4,3,8 as timings. You will have to go into BIOS and increase voltage on CPU most likely to run at 250 FSB. VDIMM mem voltage should be around 2.75V I've tried to increase the voltage on the CPU core but the BIOS has it blocked out., somehow I need to turn it on Share this post Link to post Share on other sites More sharing options...
mcq_01 Posted March 20, 2006 Posted March 20, 2006 Blocked out? You looking on the right field i.e. CPU VID? I think new A64 chips can run ram at higher frequencies without uping the fsb. Share this post Link to post Share on other sites More sharing options...
jimmil43 Posted March 20, 2006 Posted March 20, 2006 These are the settings that the guy at OCZ said to use, it calls for a CPU voltage of 1.4, not the CPU vid, not sure if its right or not. FSB Bus Frequency............................. 250 MHz LDT/FSB Frequency Ratio....................... Auto CPU/FSB Frequency Ratio....................... 8 PCI eXpress Frequency......................... 100 CPU Voltage .................................. 1.400v LDT Voltage .................................. 1.30v ChipSet (NF4) Voltage ........................ 1.60V DRAM Voltage ................................. 2.60v +0.03 if not 3.2V ............................ enable Memclock (DRAM Frequency) .................... 200 1T/2T Timing (Command Per Clock).............. 1T CAS Latency (Tcl)............................. 3T RAS# to CAS# delay (Trcd)..................... 4T Min RAS# active time (Tras)................... 8T Row precharge time (Trp)...................... 3T Row Cycle time (Trc).......................... 11T Row refresh cyc time (Trfc)................... 16T Row to Row delay (Trrd)....................... 3T Write recovery time (Twr)..................... 3T Write to Read delay (Twtr).................... 2T Read to Write delay (Trwt).................... 3T Refresh Period (Tref)......................... 3120 DRAM Bank Interleave.......................... Enabled DQS Skew Control.............................. Auto DQS Skew Value................................ 0 DRAM Drive Strength........................... Normal 3 or 4 (called Level 6 or 8 in other bios') DRAM Data Drive Strength...................... Level 2 Max Async Latency............................. 8ns DRAM Response Time............................ Normal Read Preamble Time............................ 6ns IdleCycle Limit............................... 256 Dynamic Counter............................... Disable R/W Queue Bypass.............................. 16x Bypass Max.................................... 7x 32 Byte Granularity........................... Disable (4 Bursts) Share this post Link to post Share on other sites More sharing options...
njack Posted March 20, 2006 Posted March 20, 2006 maybe try this: Command Per Clock (CPC) - Enable CAS Latency Control (Tcl) - 3 RAS# to CAS# delay (Trcd) - 4 Bus Clocks Min RAS# active time (Tras) - 8 Bus Clocks Row precharge time (Trp) - 3 Bus Clocks Row Cycle time (Trc) - 7 Bus Clocks Row refresh cyc time (Trfc) - 14/15 Bus Clocks Row to Row delay (Trrd) - 4 Bus Clocks Write recovery time (Twr) - 3 Bus Clocks Write to Read delay (Twtr) - 2 Bus Clocks Read to Write delay (Trwt) - 4 Bus Clocks Refresh Period (Tref) - try 3120 or 4708 ( Write CAS Latency (Twcl) - Auto,1 ) DRAM Bank Interleave - Enabled DQS Skew Control - increase DQS Skew Value - 255 DRAM Drive Strength - 7 DRAM Data Drive Strength - 1 Max Async Latency - 08.0 Nano Seconds DRAM Response Time - Normal Read Preamble Time - 06 Nano Seconds IdleCycle Limit - 16 Cycles Dynamic Counter - Enable R/W Queue Bypass - 16 x Bypass Max - 07 x 32 Byte Granularity - Disable(4 Bursts) 2.6 - 2.7v Share this post Link to post Share on other sites More sharing options...
jimmil43 Posted March 20, 2006 Posted March 20, 2006 My problem is "do I need to up the CPU voltage". Share this post Link to post Share on other sites More sharing options...
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