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Memory won't budge

post #1 of 4
Thread Starter 
I finally got a nice, stable OC with my 8350 at 4.7Ghz, and the vast majority is from the fsb. I started this OC by lowering my ram from 1600Mhz to 1333 so it wouldn't interfere. Now that the rest of my computer is stable, I wanted to see if the ram could come back up.

The problem is that in the bios, I have to jump between 667, 800, and so on. There's no middle ground. This ram is rated at 1600Mhz, but now that my fsb is bumped up, I have to keep the multiplier at 667, which puts it at 1500 something. I tried doing everything I could to this ram to pinch out a little extra, like bumping up the clock and lowering timings, all at 1.65 volts. Not even the slightest tweak would let me boot.

So seeing as I'm not a pro at this, is there something I could have missed? Is there anything else I could do to this ram, or should I be happy that my value ram is sitting 100Mhz below it's rated clock speed?
post #2 of 4
You could try Overclocking by using a Higher Multiplier and a Lower FSB,

With the Lower FSB there is better chance the Ram Multiplier match the speeds on the ram that you desire.

I also thought by using ''More'' Multiplier then FSB you can ussualy run a bit lower voltage on Bulldozer/Vishera Chips.

Can it also be that your Northbridge/HTT speeds are going too high with a high FSB, and you need to choose a lower multiplier for those
Blazer
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Blazer
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post #3 of 4
Thread Starter 
Well the thing about using a lot of multiplier is that it becomes an empty overclock, when increasing fsb helps your whole system run faster. I'm happy with where my cpu is at right now, and It actually only got to about 4.8 relatively stable with just multiplier. And I'm pretty sure it's just the ram, because when I leave that alone my computer is %100 stable. I was just wandering, since I don't know much about timings and such, if there's some way to squeeze out a little more performance of these 2 sticks that I haven't thought of.
post #4 of 4
So i read that you say you lowered the Ram Timings, you can also try upping the Ram Voltage to 1.675v, or just leave it on DDR3-1500 and try to improve the timings,

Example: from 9-9-9-24 to 8-9-9-24 or 9-8-9-24, if you are certain you cant make it boot with higher then 1500MHz i would just try to tighten the timings and far as possible and call it a day smile.gif

I beleave AMD Memory is bottlenecked by the chip itself / FSB Bandwith, so even if you up your memory frequency to lets say 2000mhz, you would not notice that big of a difference. ( Unless you OC with a high FSB/ up the Northbridge/HTT Speeds)

Sorry if im a bit wrong about the NB/HTT speeds, i havent had a AMD cpu in a while and all my knowledge comes from lurking on OCN lol thumb.gif
Blazer
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Blazer
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CPUMotherboardRAMHard Drive
Intel i7 4790K MSI MPower Z97 Adata XPG 2x8GB DDR3-2600 Crucial M500 120GB SSD 
Hard DriveHard DriveHard DrivePower
Samsung 830 128GB SSD Cruscial MX200 250GB SSD WD 1TB HDD Seasonic M12II Evo 750W 
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