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Discussion Starter #1
OK, I am having problems getting a good overclock with my PC. I have a DFI Lanparty Ultra-D..3700 Sandiego CPU and 2 x 1GB EB Platinum. <br />
What I am thinking is that I possibly have some of the secondary timings.drive strength settings wrong in the bios for this combo. I am finding that this seems to be a particularily troublesome trio, and your help would be much appreciated. Up to date, my best OC is 260X10. It is prime stable and gives me a 31 seconds 1M superpi score. <br />
<br />
What I am asking is if anyone else runs this 3some (dfi ultra-d/3700sandy/ocz eb PC4000 Plats)<br />
and is gettings prime stable OC to 2700mhz+ if they could post there full memory timings and drive strengths here. This would be greatly appreciated, and thanks a bunch in advance!!<br />
<br />
P.S. Please also let me know if your superpi score is 32 or better, cause I am able to get 2.7 stable, but only with my memory so slow that I get a 34-35 second pi run.
 

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1. <a href="http://www.overclock.net/faqs/38268-info-dfi-nf4-dr-motherboard-introduction.html" target="_blank">http://www.overclock.net/faqs/38268-...roduction.html</a><br />
2. <a href="http://www.overclock.net/faqs/31782-how-find-limits-my-cpu-memory.html" target="_blank">http://www.overclock.net/faqs/31782-...pu-memory.html</a><br />
3. Check out the A64 tweaker and Gogars too <img src="/images/smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" />
 

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Discussion Starter #3
OK, sry. I guess I didnt make myself very clear. <br />
I have been fighting with this CPU since I got it. (and learning lots)<br />
My max cpu OC is 2.9GHZ (with my memory WAY down at 100mhz divider)<br />
My Max HTT is 312<br />
My Max ram that passes memcheck is 280<br />
<br />
but I am not able to get a stable run when I push the CPU to anything over 2.7 with my memory over 200mhz. I have tried 9x 10X and 11X and I always get to the same speed...2700mhz. I have read that there are some issues with the sandy and the eb platinum PC4000s, and I was wondering if anyone else has had success with these specific components. <br />
<br />
Thanks
 

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well my kab2e stops at 2750mhz. or i think it does. tried 2800 but doesnt past prime so i stopped there. you have good ram, dont know y u running low frequency. do t2 and lower the timings and be at 200 or 166 mhz.
 

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Sorry, no info on that spicific RAM/MB and if there is an issue with it or not.<br>
IMHO it's either as you suspect or the Genie settings are the issue.
 

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Discussion Starter #6
If I go to 2t and lower my mem speed WAY down,. I can get stable at say 2.7 or 2.75 and even get a pi run at 2.8, but because my memory is so slow at 2T on a divider that keeps the ram operating under 200mhz, then my pi speed is slower then when I run 260X10 @1:1 Thats why I was hoping that someone else with a 3700 Sandiego and Platinum EB PC4000 ram on a DFI lanparty could post there timings.<br><br>
I can run 260FSBX10 at 1:1 mem speed, 9hrs+ prime stable with the following settings.(I stop prime with no errors)<br><br>
200 (1:1 divider)<br>
enable (1T)<br>
3<br>
03<br>
08<br>
02<br>
10<br>
16<br>
03<br>
02<br>
02<br>
03<br>
3072<br>
auto<br>
enabled<br>
auto<br>
0<br>
level 8<br>
level 2<br>
auto<br>
DRAM Response Time: normal<br>
auto<br>
256<br>
disable<br>
16<br>
07<br>
disable<br><br>
In Genie Bios:<br><br>
260fsb<br>
3xhtt<br>
16 16<br>
10xmulti<br>
101<br>
disable<br>
vcore 1.500v<br>
ht 1.20v<br>
chipset 1.40v<br>
ram 2.6v<br><b><br>
and yet I cant run the following settings at 246fsbX11.</b><br><br>
180mhz divider(which means I run down at 225mhz actuall ram speed)<br>
enable (1T)<br>
3<br>
03<br>
08<br>
03<br>
11<br>
18<br>
03<br>
03<br>
02<br>
03<br>
3072<br>
auto<br>
enabled<br>
auto<br>
0<br>
level 8<br>
level 2<br>
auto<br>
DRAM Response Time: normal<br>
auto<br>
256<br>
disable<br>
16<br>
07<br>
disable<br><br>
In Genie Bios:<br><br>
246fsb<br>
4xhtt (have also tried auto and 3x)<br>
16 16<br>
11xmulti<br>
101<br>
disable<br>
vcore 1.64v<br>
ht 1.40v<br>
chipset 1.50v<br>
ram 2.6v (tried 2.7 2.5 2.8 2.83)<br><br>
I have tried 9x as well, and only get to 2700~mhz as well, on a memory divider as well
 

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Sounds like you've reached the limit of your CPU. There's a certain frequency all CPUs just can't run at.
 

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Have you tried 10 vs the "8" it wont effect performance but may add stability.<br>
Also... try those.<br>
Row Cycle time (Trc) - 12 Bus Clocks<br>
Row refresh cyc time (Trfc) - 24 Bus Clocks<br><br>
You could try the adjustments with A64 tweeker and quick test in windoew with OCCT, then further test for stability with memtest. ncsa has a memtest quick quide from the below link...<br><br><b><span style="color:#000000;"><span style="font-family:Arial;">Memtest:</span></span></b><span style="color:#000000;"><span style="font-family:Arial;"><br></span></span><br><span style="color:#000000;"><span style="font-family:Arial;">For any change it is recommended that you use Memtest to check if this configuration is stable.</span></span><br><br><span style="color:#000000;"><span style="font-family:Arial;">Some quick checks using this tool are:</span></span><br><br><span style="color:#000000;"><span style="font-family:Arial;">Get your Memtest CD - make sure CD boot is prior to HDD in BIOS.<br><br>
Boot system with CD in drive - Memtest should auto run and for 10-20 loops make sure that these key tests are OK – 5, 6, 8<br><br>
Once running, to select Test #5<br>
Type C 1 3 5 <enter> <enter><br><br>
Now Memtest will loop in Test #6<br><br>
And for Test #6<br>
Type C 1 3 6 <enter> <enter></span></span><br><br><span style="color:#000000;"><span style="font-family:Arial;">Now Memtest will loop in Test #8 (20 loops best)<br><br>
And for Test #8<br>
Type C 1 3 6 <enter> <enter></span></span><br><br><br><span style="color:#000000;"><span style="font-family:Arial;">If you get errors in any of these tests you will need to recheck you BIOS settings, timings and / or voltages. There is no silver bullet here as each system is different and will react & perform differently – time and patience is required <img alt="" class="inlineimg" src="/images/smilies/biggrin.gif" style="border:0px solid;" title="Big Grin"><br><br>
Above from...<br><a href="http://www.overclock.net/faqs/38268-info-dfi-nf4-dr-motherboard-introduction.html" target="_blank">http://www.overclock.net/faqs/38268-...roduction.html</a><br><br>
below from me <img alt="" class="inlineimg" src="/images/smilies/smile.gif" style="border:0px solid;" title="Smile"><br>
Memory can be a very time consuming process, I hope his guide, the OCCT and all can help speed things up a bit, but as I sure you already know, a full memtest in the end for sure.<br></span></span>
 

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Discussion Starter #10
Hey, thanks. THats what Im looking for. I will try those settings as soon as I get home. I dont think I need much, as I was able to get up to 2704mhz 8hrs prime, but was still getting internet explorer crashes. Maybe those settings will be enough to push me over the edge. Thanks again for the ideas.
 

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Best wishes... never know though, rarely some RAM is optimized for Intel systems and a pain in AMDs.
 

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Discussion Starter #12
Wierd..I just read through the Sticky OC database, and almost every 3700 Sandiego core overclock in there has G-Skill ram, and 1 or 2 has corsair, but not a single one has OCZ...Whats with that... does the Sandy hate the OCZ plats???
 

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Discussion Starter #13
I got my new board last night (rma'd my old one, cause the ram voltage would only adjust with the 4V dram jumper enabled, otherwise it was stuck at 2.39v) Anyways, I messed with some more memory settings, and tried to get it to run at 2.7 with 1.58v vcore..It was close. I was only able to get .5 an hour prime, but just could not pull that last few MHZ out of it. I jumped the voltage up to 1.62 and I ran 24 minutes prime stable @ 2728mhz. I went down to 2706mhz and ran 6 hours before it got an error. Today, I will try at 2695mhz. I think Im close. My memory is running at 3 3 8 2 1T @ 246mhz (I tried loosening the timings, but no difference) I am getting pretty good speed on my benchmarks, and I can run 30seconds superPi at this speed, so If I can tweek a bit more, I should be able to get stable above 2.7. Is 1.62 already to high for 24/7 , or should I bump it to 1.64?? My new board has the same temps (44c) for NF4 chipset, but a little cooler (36c)on the pwrm sensor. I made sure that my CPU cooler was seated really nicely. I only placed the heat paste on the very center of the CPU as per instructions, and was very carfull not to smear it around when I installed the heatsink. Now my CPU temps are down to 45c under load and 26c at idle, while at 1.62 volts vcore!! I am running with a Arctic Cooling Freezer Pro 64.<br />
Anyways, I am happy with this overclock. I guess I just dont have the CPU to run 2.8+, but I am sure its not my memory now, and besides...2.7 is not bad for a 92$ ebay CPU<br />
Thanks again for everyones help and suggestions!
 

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Discussion Starter #14
Well, its not my memory thats stopping me. On my new board, I just ran 9 hrs prime stable at 285mhz FSB X 9 = 2565MHZ at 1:1. So my memory runs great all the way up to 285 @ stock timings of 3 3 8 2 1T. I was amazed that it kept going. I guess I will just have to either be happy with the OC I have, or buy a new CPU...Thanks OCZ for the awesome ram <img src="/images/smilies/thumb.gif" border="0" alt="" title="Thumb" class="inlineimg" /> <img src="/images/smilies/thumb.gif" border="0" alt="" title="Thumb" class="inlineimg" />
 

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I have a 3700 clocked at 255 * 11 (2805mhz) running on stock volts. I have crappy kingston ddr400 value ram with a 6:5 multiplier (212mhz) and have the bus multiplier at 5x (1275mhz). I'm not sure what my ram timings are since I am new to overclocking and I am not at home right now. At this speed I get 31 in superpi. I'm sure that if I got some better ram that I could run 1:1 I would get down to 29 or 30.
 
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