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post #61 of 90
What are you doing with the computer? Are you gaming? I wouldn't bother with the ram it can end up being a problem later on. You really have to do 12-24HR prime runs at the end of each step. OCing the ram past 1333 just isn't worth it for most things. The processor was never designed to run 1333 let alone 1600 or 1866. Anything over 1066 is overclocking and you may or may not have success with it. I have a 920 D0 with 3 sticks of 1866 quad channel and to run the ram at anything past 1333 costs me something somewhere. I can run it to 1866 no problem but I loose overclockability somewhere else. Shoot for a high clock first with low everything else make sure it is 24HR prime stable and if you game that your system doesn't crash while gaming run it for about a week like that and then try upping the multiplier.

The problem with OCing the ram IS the multiplier. Whatever you find yourself at with the BCLCK you are going to be making huge jumps with the ram speed and it isn't going to be stable after 2 or 3 multipliers up from whatever is close to 1066.

So just run it at 800 for now then once you have your max OC up the memory multi one at a time till it is no longer stable then go back down. You don't get to play with the BCLCK with the memory because reducing the bclk will reduce the CPU speed which just isn't worth it.

Shoot for CPU then up the memory multi then QPI multi (if yours has several settings). But keep the QPI and memory as low as possible for at least a week after you find you max OC. On mine I ran the QPI on the super low speed (not all boards have this) and I got it back to around the stock speed after OCing.
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post #62 of 90
Thread Starter 
I dont plan on overclocking my RAM biggrin.gif no need for it. Im going to use a RAM multi of 8 to keep my RAM running at its default 1600mhz.
In the end My settings will look hopefully something like
200mhz bclock
21 multi
uncore 3208mhz (only 10mhz higher than default)
RAM freq: 1603mhz
qpi voltage: 1.275
Vcore: 1.225
DRAM: 1.5v
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post #63 of 90

Not sure why your changing the multi n bclk so much for. I would try it at 22 or 23 and just set your ram as close as you can. My motherboard struggles to hit the higher bclk so I do a high multi.

You seem worried about the ram, its not that important. Get your CPU at a stable setting, 4.0 - 3.8 or whatever, and then go from there.

 

I run DDR3 1600, however its at 1475, my default timings are 7-9-7, I run 6-8-6. If I bench my ram at default 1600MHz 7-9-7 vs 1475 6-8-6 the slower MHz is actually faster (like .02 ms lol). You can underclock your ram and tighten timings, it tends to give the same results. However with memory unless its a drastic jump in MHz we are literally talking miliseconds difference, nothing you will see in real world use. Thats why you should focus on your CPU for now.

 

 

I run stress tests overnight. IBT is good for quick stability, but I have passed IBT and then errored on Prime95 after 5 - 6 hours..

 

Once I can run 8 - 10 hours Prime95 I call it stable..

 

I have ran the clocks in my sig 24/7 for over 2 years.. No stability issues so far.. 

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post #64 of 90
If I grab DDR-3000 throw it in my PC and expect it to run at DDR-3000 (1500mhz) and keep my max OC I am going to be in a big surprise.

You are over locking the ram controller... That chip is designed to run 1066 memory. Around 1333 is usually fine but after that you might start to loose out in other areas. Can your board and chip handle 1600 sure probably but not necessarily at your max CPU speed.
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post #65 of 90
Thread Starter 
Im just following the steps in the guide (sample 2 is my goal excluding the 2000mhz RAM) [ http://www.techreaction.net/2010/09/07/3-step-overclocking-guide-bloomfield-and-gulftown/4/ ]
I havnt done anything to multi yet or RAM. I am still testing for stable bclock .
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post #66 of 90
What is your goal for the CPU OC?

Because at 23*174=4002MHz
If your memory multiplier is set to 5x2=10 you would have 870MHz (DDR-1740) which is much higher than your rated memory speed and much much higher than the CPUs IMC rated speed. I don't even know if you would know where to begin on your timings to try to get that speed. You could try 9-9-9-27 at 1.65v (rated specs of the 1866 version of that kit) but instead you could go for a multiplier of 4x2=8 which would leave you with 696MHz (DDR-1392) which is still significantly higher than the rated speed of the IMC then you can shoot for tight timings. You know your ram can handle 1400 since it is rated at 1600 and you know it can handle at least 8-8-8-24 at 1600 so you might be able to achieve 7-7-7 timings at the lower speed.

Remember to read up on the warnings about ram voltage and it's relation to other voltages (since you can definitely damage the IMC).

If you are shooting for a 200MHz BCLK then the "sample 2" is not ideal at all... 200MHz

IF you bclck is stable up to 200MHz With a multi of 21 on the CPU and 4 or 8 (whatever it is called on your motherboard) for the memory 190-200MHz would leave you with 4.0-4.2GHz and DDR 1520-1600 and uncore of 3040-3200.

If you can't get that to work then you can run the CPU at 23 and bclk 174-182 for the same 4.0-4.2GHz with DDR speed between 1392-1456


Anyways IMO this is why you should forget about the memory and run it SUPER lower speed with the uncore set appropriately as well. This way you can find out really what is the MAX speed the CPU can go then you can play around with the different setting that get you closest to DDR-1600 and then see if it is stable and if not start playing around with multipliers to keep the highest OC you could obtain and get the highest ram speed that is stable. Finding out your ram is stable at 200 bclk and 4x2 multi isn't going to be very important if you end up getting to 4.3GHz because then your only options near 1600 will be 1500 and if you only make it to 3.9GHz you will be in the same exact boat of 1500.

You don't want to give up a shred of CPU oc for memory oc and your CPU OC is going to define you memory OC because the bclk is so high and the memory multi and cpu multi are so low... just not a lot of fine adjustment.
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post #67 of 90
Quote:
Originally Posted by 50shadesofray View Post

Im just following the steps in the guide (sample 2 is my goal excluding the 2000mhz RAM) [ http://www.techreaction.net/2010/09/07/3-step-overclocking-guide-bloomfield-and-gulftown/4/ ]
I havnt done anything to multi yet or RAM. I am still testing for stable bclock .

im not one for testing blck because nearly all boards unless you got a crappy one will do up to 200 most will go up to 210 and the real good ones will do 230 if it was me id be testing the overclock i want.
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post #68 of 90
Thread Starter 
Can i have some recomendations from those experienced with bloomfield? i keep having people tell me dont do that and do this then there are people telling me to do the oppossite. Just give me one clear concise answer PLEASE SOMEONE.
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post #69 of 90
I think you're just wasting time with this. Use the max multi and just clock up the Bclk
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post #70 of 90
Thread Starter 
You're right about wasting time. But on the other hand that doesn't elaborate on how to stay stable with max multi and raising the block
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