Is it possible to tighten my timings or raise my ram frequency?

Can anyone help me with this? I have tried tightening my timings and it cant get stable. Everything I have tried testing with memtest will give me errors.

What can I do to get it to run at 1866 MHZ or tighter frequencies?

I have tried to put my Dram at 1.6 - 1.65 volts it will post at 1866 Mhz or if I Tighten my timings, it will either crash/freeze or it will give me errors on mem test. Not even to 8-9-9-24-2T. will work. Any ideas on what I can do?

Does CPU/NB have anything to do with it? If so I believe I have tried 1.3 volts for CPU/NB also with 1.6 volts and it will still do the same. I dont think I have done it at 1.65 at that setting though. Yesterday was my first time putting it at 1.65 volts because I wasnt sure if it would be good to put it their w/ 1.25 cpu/nb and it still froze.

My build is in the sig. Could it be my Mobo is holding me back? I read that tightening the timings for this RAM should be easy but I cant even do anything to get it stable unless if its at its stock timings. Only thing I have managed to do is put it at 1T.


Prime95 was running in the backround. Temps are under load.

Try 1866 9-10-9-28 or 9-11-9-28 or 9-11-10-28, 1.65V , 2T
CPU-NB should be working fine on stock for these clocks but you can add 0.05-0.10V.

Probably higher memory clock won't help you much in performance. For higher performance it will probably run better @1600 8-8-8-24 2T ~1.65V and higher CPU-NB clock. 2400MHz CPU-NB should be stable for all FX series but you can try 2500-2600MHz ( in this case you have to raise CPU-NB voltage ).

I don't know what IC you have in your memory as these kits were mixed so you have to try some sets of timings yourself. Voltage on stock as I see is 1.50V so up to 1.70V should be still safe. Try to keep it at about 1.65-1.68V max for 24/7.

Woomack said:

Try 1866 9-10-9-28 or 9-11-9-28 or 9-11-10-28, 1.65V , 2T
CPU-NB should be working fine on stock for these clocks but you can add 0.05-0.10V.

Probably higher memory clock won't help you much in performance. For higher performance it will probably run better @1600 8-8-8-24 2T ~1.65V and higher CPU-NB clock. 2400MHz CPU-NB should be stable for all FX series but you can try 2500-2600MHz ( in this case you have to raise CPU-NB voltage ).

I don't know what IC you have in your memory as these kits were mixed so you have to try some sets of timings yourself. Voltage on stock as I see is 1.50V so up to 1.70V should be still safe. Try to keep it at about 1.65-1.68V max for 24/7.

Click to expand...

I have tried 12-11-12-27 for 1866 and it wont even pass mem test. I believe it froze when I tried that. I have had it at 2400 cpu nb before also just havent gotten around to changing it. 2600 and it wouldnt be stable at 1.3 volts.

I cant even get it to get to 8-9-9-24-2T with 1.65 volts. Would my CPU/NB raised to 1.3 volts help with that? I am still pretty new to OCing. Took me 2 months to finally get a stable 4.4 ghz on my PC. Build is in my sig.

Also what is IC?

Some of Vengeance 1600 are almost not overclocking ( as I said it depends from chips ) so if you can't make it stable @1800+ then try to set tighter timings @1600. For that you will need higher memory voltage but you shouldn't need higher CPU-NB voltage to make it as IMC is designed for memory clocks up to 1866. You can of course try it as maybe board is undervolting CPU-NB.

Try to change memory slots. If you have it in 1/3 then move it to 2/4 ( counting from cpu side ). Sometimes it helps.
Also try higher memory voltage but I doubt it will help much as going up from 1.50 to 1.65V didn't help.
Maybe 1600 9-8-8-24 or 9-8-7-24 will work.

Still best will be if you try to set higher CPU-NB clock.

IC = integrated circuit , simply memory chips in this case
IMC = integrated memory controller, in this case CPU-NB is IMC voltage

Woomack said:

Some of Vengeance 1600 are almost not overclocking ( as I said it depends from chips ) so if you can't make it stable @1800+ then try to set tighter timings @1600. For that you will need higher memory voltage but you shouldn't need higher CPU-NB voltage to make it as IMC is designed for memory clocks up to 1866. You can of course try it as maybe board is undervolting CPU-NB.

Try to change memory slots. If you have it in 1/3 then move it to 2/4 ( counting from cpu side ). Sometimes it helps.
Also try higher memory voltage but I doubt it will help much as going up from 1.50 to 1.65V didn't help.
Maybe 1600 9-8-8-24 or 9-8-7-24 will work.

Still best will be if you try to set higher CPU-NB clock.

IC = integrated circuit , simply memory chips in this case
IMC = integrated memory controller, in this case CPU-NB is IMC voltage

Click to expand...

Guess I am out of luck then. I tried it with 1.66 volts and tried to get 2600 cpu/nb at 1.375 voltage and that wouldnt even work. Higehst I can get is 2400 cpu/nb. Ram must of been a bad pair then fml.

I cant do 1/3 because my 212+ is in the way of that slot.

I managed to get it to 9-8-8-24-2T without any errors so far with 1.65 Voltage. I guess I wont be able to change my CAS latency which I remember reading thats the most important one. Can I still go lower to say 9-7-8-21-2T for example if I manage to get my ram stable at 9-8-8-24-2T. I have never done this with ram before. If I can get it stable would tightening the timings lower without lowering the CAS latency be ok? or should I not even bother. Like for example if can I do 9-7-7-18 or 21-2T without having to lower my CAS latency?

Also how does the Bank Cycle Time work when I lower that? How much should I do it at one time if I manage to tighten it a little more from stock?

Thanks for your time/help btw.

On this platform you won't see any special difference if you set memory @ 8-8-8 or 9-8-8 or 9-7-7. Try tightening other timings but I wouldn't really bother if it's for daily work.

Most FX series are running stable up to 2400 CPU-NB, some higher but usually no more than 2600 on higher voltage. Switch from 2200 to 2400 will give you more than going up to 1866 memory clock and 2200 CPU-NB.

I have managed to get the CPU/NB at 2400 but I get an error that says "FATAL ERROR: Rounding was 0.5, expected less than 0.4" on Prime95 Blend Test.

Could that bet my cpu/nb causing that since its at 2400 now? I have the voltage at 1.3 volts. Should I try and raise it to 1.325?

At 9-8-8-24-2T it is stable on Memtest. Now I am trying 9-8-8-21-2T. and looks good so far.

I use this PC mainly for gaming but have made OCing kind of my new hobby. If I am not gaming I find my self trying to OC and tighten my timings a lot to try and find what is the most stable set up for me. 2 months ago I was relying on AI Suite II to auto overclock for me and I have slowly learned more and more about OCing. Now I use the BIOS after I realized the Auto OC on that program set my CPU/NB at 1.7125 w/ 1.4125 Vcore Voltage. It did manage to get it to 4250 Mhz before it stopped on the stock voltage. Now I am at 4415 Mhz with the current voltage I am at.

Should I turn off CPU/NB LLC? Would that help my PC be stable at 2400 MHZ and not throw an error on Prime95? Before I left The CPU LLC off before and couldnt get a stable OC at 4415 Mhz because of Vdroop but now its stable after leaving it on. My temperatures are a lot higher now though. I am not sure about CPU/NB LLC since I dont know which voltage I should be looking at on HWmonitore for my CPU/NB.

This PC is almost on 24/7. I put it on hibernate or sleep when I go to bed then it will be back on when I wake up.