zx-ice Posted December 6, 2004 Share Posted December 6, 2004 All, I have the following combo: A64 3500 / Abit AV8 3rd Eye 2 x 512 Corsair Twinx PC4000 Antec True Control 550w 9800 Pro Mach II When running at full speeds i.e. DDR400 in the DRAM cmos settings I can memtest without a problem. I can clock to around 260HTT so about 2.9Ghz. When I try and run Prime at anything over 215 it crashes almost immediately. If I step the memory down to DDR333 and DDR266 it primes with flying colours - even hugely OC'd. Memtest is working at the DDR400 speeds so, as you can imagine, this is doing my head in. The memory has been tested in a 775P4 rig to 245FSB. Any advice greatly appreciated, Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 6, 2004 Corsair Employees Share Posted December 6, 2004 What do you have the HT frequency set to? You might try it at 3 and see if that helps. And I would set the Dim Voltage to 2.8 Volts as well. Link to comment Share on other sites More sharing options...
zx-ice Posted December 7, 2004 Author Share Posted December 7, 2004 Dim at 2.8v and I have tried all the HT settings providing you mean the FSB x5, 4, 3, 2 ,1 ? Thanks Link to comment Share on other sites More sharing options...
zx-ice Posted December 7, 2004 Author Share Posted December 7, 2004 I've now downloaded Memtest86+ (1.4) and am seeing errors in tests 5 and 7 when running in DDR400 mode. Can you advice me of the right memory settings as SPD does not detect correcty for some reason? Thanks, Link to comment Share on other sites More sharing options...
Wired Posted December 7, 2004 Share Posted December 7, 2004 SDRAM CAS Latency: 3T SDRAM RAS to CAS Delay (tRCD): 4T SDRAM Row Precharge (tRP): 4T SDRAM Active to Precharge Delay (tRAS): 8T SDRAM VDIMM: 2.75 or 2.8 All other settings are motherboard defaults. Maximum recommended VDIMM: 2.9 Link to comment Share on other sites More sharing options...
zx-ice Posted December 7, 2004 Author Share Posted December 7, 2004 This is what I have: DRAM CLOCK: DDR400 DRAM COMMAND RATE: 2T CAS LATENCY:3 CLOCKS RAS TO CAS: 4 CLOCKS MIN RAS ACTIVE TIME: 8 CLOCKS RAS PRECHARGE TIME: 4 CLOCKS ROW CYCLE TIME: 11 CLOCKS ROW REFRESH CYCLE TIME:14 CLOCKS RAS TO RAS DELAY: 2 CLOCKS WRITE RECOVERY TIME: 3 CLOCKS WRITE TO READ DELAY: 2 CLOCKS READ TO WRITE DELAY: 4 CLOCKS I presume that is all correct? Thankyou for taking the time to help :D Link to comment Share on other sites More sharing options...
Wired Posted December 8, 2004 Share Posted December 8, 2004 looks right for those settings. Link to comment Share on other sites More sharing options...
zx-ice Posted December 8, 2004 Author Share Posted December 8, 2004 It's either faulty ram or motherboard then. Dang! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 8, 2004 Corsair Employees Share Posted December 8, 2004 I would check with ABIT and see if they have a new bios, and if that does not solve the issue, then I have no problem replacing your modules if you like. Please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! Link to comment Share on other sites More sharing options...
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