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Memory speed at OC?

post #1 of 6
Thread Starter 
I went from a stock 2.66GHz (and my memory at 8-8-8-24 at 1600MHz) to a stable 3.8GHz. I am new to OCing so I was unaware that when I upped my multiplier my memory speeds changed. I do not have a memory multiplier setting in my bios, I can only select my speeds from a drop down. I no longer see 1600MHz in the list. It goes from 1400 something to 1700 something. I am using 1400 since I do not want to strain the memory controller at 1700, and I heard that going above 1600 with my memory causes instability.

All in all I have not been that impressed with my OC. I am stable, but I do not see that much gain from the OC in the first place. I left HT on since I do a good bit of video editing and encoding. When converting a video file from an MTS file to an MP4 file, I didn't see much speed gains from the OC. Is this normal?

Is it because I now have the memory speed lower than the original 1600MHz when my system was stock?

I don't really want to go above 3.8GHz with my OC b/c of the heat increase while HT is left on, but should I do so to get back to the 1600MHz ratio for the memory when I up my multiplier?

Thanks!
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post #2 of 6
Stress test your memory at 1700 and see if it works. And you should be able to get to 4 ghz pretty easily on most i7 chips. (if you do then I would go back to the lower memory ratio)
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post #3 of 6
Thread Starter 
So you think the reason I am not seeing better results when converting video at my 3.8GHz OC is due to the memory speed?
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post #4 of 6
Thread Starter 
I guess a better question is, what should I expect out of the OC? I have never OC'ed before and I have no clue what to expect.

Should I notice a difference when going from 2.66 to 3.81? Where would I see the increase?

My PC did not really seem much "snappier" than it did when it was just stock?

And as in the original post it didn't encode much faster?

Need some insight from those of you who have OC'ed.
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post #5 of 6
I have oced an i7 920 to 4ghz and you are right, it will not seem *snappier* as most of the snappy OS feel will be from hard drive / ssd feel

I noticed several things:
Faster encoding/compiling/rendering times. I know you said you didn't see this much, but I wonder if the program you are using is utilizing your cpu to 100% then, because you should definitely see the increase here. I saw very improved speed in my CAD rendering

More PPD. I dont know if you fold, but I definitely noticed this.

More FPS. I don't know if you game, but CPU intensive games ran much better.

What type of encoding program/programs are you using where you dont see the speed increase? Did you actually time it, is it just feel, or are the encoding processes long enough you would notice a 10-25% increase whether you timed it or not.
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post #6 of 6
Thread Starter 
I have an SSD drive for my OS, and had it before I OC'ed, so I guess that explains what you were saying. It was already extremely snappy due to the fast read times.

I don't fold or game, but do lots of weekly encoding.

I have to downconvert lots of video to a web format to be able to upload it to Vimeo. It is recorded in high def and I can't downconvert it on the camera (long story...a camera was purchased that is way overkill for it purposes) so I have to encode it to MP4 format. Right now I am using Mediashow Espresso as it is the fastest program I have seen thus far.

So right now, I am just judging by the feel. I did a quick time test and it wasn't that neglible. Is there a program recommended that will utilize your PC 100%? I really am just encoding to another format, that is it...
Edited by kleecomputer - 7/26/11 at 10:53am
First Ever OC
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First Ever OC
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Vertex 2 60GB + WD Caviar Green 500 GB Windows 7 Pro x64 Corsair CMPSU-650TX Cooler Master HAF 922 
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