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Looking into new memory for my Phenom II rig, how high can I go?

post #1 of 4
Thread Starter 
In bios memory tops out at 1600 on amd boards with out overclocking, i'm about to make the jump from 4gigs to 8 and i'm wondering just how fast I can go. I heard the NB frequency is the bottle neck for memory, witch is a problem because my NB will NOT go above 2.66ghz. So would I be wasting my money getting an 1866 or 2K DDR3 kit?
post #2 of 4
over clocking ram is really dependant on two things

1) the ram. ddr3 ram usually comes in, 1333 (thats the normal, and the "form factor/standard" for am3 so anything above IS an over clock, 1600, 1800, 2000, and i think 21/2200

2) the motherboard, not all mobos suppost 1600 or higher, i dont know your mobo personally however, new egg says this


DDR3 1866(OC)/1333/1066
*To reach DDR3 1866MHz or above, you must install two memory modules and install them in the DDR3_3 and DDR3_4 memory sockets.

which means you can only use TWO sticks if you are going higher then 1333, and you can only go as high as 1866, but it seems you cant run 1600, or every google response to this is wrong, although i dont know why you wouldnt be able to run 1600.

so, if ur only OCing 2 sticks, which is all it seems to be able to do, you shouldnt have to do any other OCing, (once agian, from google searches). however please dont warrent my statements with the death penalty if i am inorrect (once again, with this google searches)
   
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2600k  asus sabertooth p67 EVGA GTX570 EVGA GTX570 
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post #3 of 4
Youll just be downclocking your memory actually ..
Your board will set the memory to 1600..

If you want to get those timings and frequencies that they are rated at youll have to raise the buss speed....which means using that unlocked processor feature to lower the ratio and raise the bus to keep your specific GHz your wanting..
Try turning your HT link down to like 2000
Oh and AMD loves low latency memory(tight timings) so if this 1800MHz kit is rated nicely then you can go lower to 1600 and tigthen the timings that much more...just a thought..

My memory on my amd platform before i started selling it was pretty nice

GSkill flare 1800MHz CL 9-9-9-24
I got them at 1800 to cl 8-8-8-20
Then at 1600 to cl 6-7-6-20
Was the tightest i could get at both of those Frequencies..

But i did not try to go higher or above 1800MHz no reason to do so on amd systems
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LIttle Banshee
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post #4 of 4
Thread Starter 
Thanks a lot for the information, @ggoodd thanks for doing so much research, I am aware that if I want anything above 1600 il need to do buss overclocking and balance out with multipliers, its actually kinda fun.

@odin2free
I have heard from a load of sources that AMD loves low latency, because of that I think I will go with this C7 1600 kit and see how far I can push frequency with out touching timings. Funny that this kit is as much as I payed for my C91600 kit a year ago
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