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G.Skill Pi PC3-17600 4GB Dual-Channel Memory Kit

By: Shawn Baker | DDR-3 Memory in RAM | Posted: Dec 10, 2009 6:06 am
TweakTown Rating: 93%Manufacturer: G.Skill Technology



Getting to 2200MHz, we needed to achieve a BCLK of 220 if we wanted to continue using the same memory divider we always use. Unfortunately we didn't have much luck getting to 220 BCLK. In saying that, though, our other option is a 183 BCLK which is where you'll get pointed to if you use the Extreme Memory Profile (XMP). So with our BCLK at 183, our memory was clocked at 2202MHz DDR at 7-10-10-28-2N which is the default timings. Not being able to achieve the 2200MHz DDR clock at the 220 BCLK, this was no fault of G.Skill; our CPU simply didn't want to play at that BCLK nicely.




You can see the validation here.


When it came to testing, our numbers were a bit all over the place. Because we had to drop the BCLK, our CPU MHz dropped and in turn it dropped our performance.




So when it came to trying to get more speed using the same divider, we saw what we could do. What we ended up with was a BCLK at 190, a 3993MHz CPU clock and our memory sitting at a very nice 2282MHz DDR which is 82MHz DDR over the already insanely high stock clocks on offer.


You can see the validation here.




What we also did from there was move the divider to the one we would normally use and try and get just as much MHz out of the CPU we could while moving the memory with it.


We ended up with a CPU clock of just over 4400MHz and a memory clock of 2102MHz DDR. To try and achieve the highest clock, we disabled hyper threading which let us get the BCLK slightly higher than when it was on.


You can see the validation here.


Important Editor Note: Our maximum overclocking result is the best result we managed in our limited time of testing the memory. Due to time constraints we weren't able to tweak the motherboard to the absolute maximum and find the highest possible FSB, as this could take days to find properly. We do however spend at least a few hours overclocking every motherboard to try and find the highest possible overclock in that time frame. You may or may not be able to overclock higher if you spend more time tweaking, or as new BIOS updates are released. "Burn-in" time might also come into play if you believe in that.


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