DogChainX Posted July 27, 2006 Posted July 27, 2006 EDIT: I got to 2700MHz, look down a few posts to see what tweaks i did to the BIOS to get there. Ok, I bought into the price reduction hype and am the owner of a brand-new spanking 3800+ x2 CPU. I was excited to get this because I'm usually multitasking quite heavily with Photoshop, Illustrator and a few other programs. However, I "upgraded" from an Opteron 146 running at 2900Mhz to this that won't overclock past 2400Mhz. Help? :confused: I have read the OC guide through and through, with little help getting past 2400Mhz. I also read somewhere a lot of people can't get past 2400Mhz with the 3800 x2's, and this is the place to come for expert help. Notice that I am using WATER COOLING, so heat should be a huge factor. I have tried DOZENS of settings, and can't find a way past 2400Mhz. Here is my system config settings. I also have my sig updated (yes, i read the forum rules!) FSB Bus Frequency - 240 LDT/FSB Frequency Ratio - x3 CPU/FSB Frequency Ratio - x10 PCI eXpress Frequency - 100Mhz CPU VID StartUp Value - Startup CPU VID Control - 1.5v CPU VID Special Control - Above VID * 102.4.% LDT Voltage Control - 1.3v Chip Set Voltage Control - 1.5v DRAM Voltage Control - 2.8v DRAM Configuration Settings: DRAM Frequency Set - 166 Command Per Clock (CPC) - enable CAS Latency Control (Tcl) - 3 RAS# to CAS# delay (Trcd) - 04 Bus Clocks Min RAS# active time (Tras) - 08 Bus Clocks Row precharge time (Trp) - 04 Bus Clocks Row Cycle time (Trc) - 12 Bus Clocks Row refresh cyc time (Trfc) - 16 Bus Clocks Row to Row delay (Trrd) - 04 Bus Clocks Write recovery time (Twr) - 03 Bus Clocks Write to Read delay (Twtr) - 02 Bus Clocks Read to Write delay (Trwt) - 03 Bus Clocks Refresh Period (Tref) - 3120 Cycles Write CAS Latency (Twcl) - auto DRAM Bank Interleave - Enabled DQS Skew Control - Auto DQS Skew Value - 0 DRAM Drive Strength - Level 8 DRAM Data Drive Strength - Level 4 Max Async Latency - 8.0 Nano Seconds DRAM Response Time - Normal Read Preamble Time - 6.0 Nano Seconds IdleCycle Limit - 256 Cycles Dynamic Counter - Disabled R/W Queue Bypass - 16x Bypass Max - 04x 32 Byte Granularity - Disable(4 Bursts) Quote Share this post Link to post Share on other sites More sharing options...
olympic Posted July 27, 2006 Posted July 27, 2006 Only thing I can suggest is try lower dividers, which you've probably done anyways. It's very possible that 2.4 is all that 3800 can do. Quote Share this post Link to post Share on other sites More sharing options...
Voltes-5 Posted July 27, 2006 Posted July 27, 2006 I thought the '06 steppings were supposed to be good. Try to take the ram out of the equation for now and concentrate on the cpu. Quote Share this post Link to post Share on other sites More sharing options...
DogChainX Posted July 27, 2006 Posted July 27, 2006 Ok....here's my tweaks that got it to 2700MHz! I hope this has a bit more left in it though... DRAM Frequency Set - 166 Command Per Clock (CPC) - enable CAS Latency Control (Tcl) - 3 RAS# to CAS# delay (Trcd) - 04 Bus Clocks Min RAS# active time (Tras) - 04 Bus Clocks Row precharge time (Trp) - 04 Bus Clocks Row Cycle time (Trc) - 08 Bus Clocks Row refresh cyc time (Trfc) - 16 Bus Clocks Row to Row delay (Trrd) - 04 Bus Clocks Write recovery time (Twr) - 03 Bus Clocks Write to Read delay (Twtr) - 02 Bus Clocks Read to Write delay (Trwt) - 03 Bus Clocks Refresh Period (Tref) - 3120 Cycles Write CAS Latency (Twcl) - auto DRAM Bank Interleave - Enabled DQS Skew Control - Auto DQS Skew Value - 0 DRAM Drive Strength - Level 8 DRAM Data Drive Strength - Level 4 Max Async Latency - 10.0 Nano Seconds DRAM Response Time - Normal Read Preamble Time - 8.0 Nano Seconds IdleCycle Limit - 256 Cycles Dynamic Counter - Disabled R/W Queue Bypass - 16x Bypass Max - 04x 32 Byte Granularity - Disable(4 Bursts) Quote Share this post Link to post Share on other sites More sharing options...
combat squirrel Posted July 27, 2006 Posted July 27, 2006 its so strange that those few tiny tweaks got you to 2700mhz, how on earth did you find them out ? Quote Share this post Link to post Share on other sites More sharing options...
DogChainX Posted July 27, 2006 Posted July 27, 2006 its so strange that those few tiny tweaks got you to 2700mhz, how on earth did you find them out ? Googled and found a guy who had an X2 3800+ on water doing 2900MHz. He said, and i quote : "You could try lower the max async latency and read preable like I did, I thought it didn't matter since my Ram can run stable @ 250Mhz but putting mem divider makes it unstable even when the RAM is running lowever than 240Mhz." Funny thing is, I can't find where i found it...some forum somewhere. Well, whoever posted it, thanks! I saved it to a text file, printed it off, and changed a few settings and now i'm up to 2700MHz vs my old limit of 2400MHz. Not bad for $150! Now, I think my HT is limiting me at 270MHz....anyone have any idea on how to tweak to raise the limit? -Shaun Quote Share this post Link to post Share on other sites More sharing options...
combat squirrel Posted July 27, 2006 Posted July 27, 2006 interesting, ill try your settings now to get my FSB up Quote Share this post Link to post Share on other sites More sharing options...
Guest Retratserif Posted July 27, 2006 Posted July 27, 2006 I have to try that with my 3700+. I am hitting a litmit aroudn 2800. I can get it to boot at 2900 but very unstable. Quote Share this post Link to post Share on other sites More sharing options...
combat squirrel Posted July 27, 2006 Posted July 27, 2006 just tried your settings, WORKED ! 286mhz FSB now, SO SO strange, why do those settings make all the difference ? Quote Share this post Link to post Share on other sites More sharing options...
DogChainX Posted July 27, 2006 Posted July 27, 2006 Well, i've tried numerous other settings. Looks like the HTT(fsb) craps out at 272MHz. I think this CPU could go a higher if it weren't for that limit. Anyone with known tweaks to up the HTT? Quote Share this post Link to post Share on other sites More sharing options...
h_Us3r Posted July 27, 2006 Posted July 27, 2006 Well, i've tried numerous other settings. Looks like the HTT(fsb) craps out at 272MHz. I think this CPU could go a higher if it weren't for that limit. Anyone with known tweaks to up the HTT? == New ram:angel: ! Quote Share this post Link to post Share on other sites More sharing options...
cybervicke Posted July 27, 2006 Posted July 27, 2006 u can always try some other ram and see the difference. Quote Share this post Link to post Share on other sites More sharing options...
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