Need help OC'ing RAM

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feebeeteemoff

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Nov 29, 2012
14
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10,510
Hey Community
I recently just found out how to OC using BIOS, and i beefed up my CPU a little.
But now I want to OC my ram. I'm not sure how or figure out any timings.
For some reason windows shows my RAM at 952 MHZ but in BIOS its at 1833
the Defult was 1600, but I put it up to 1833, but im not sure what to do next



SPECS
http://valid.canardpc.com/ulqevs

 
Solution
Tradesman1
tRFC is all over the place, it's more a stabilizing timing than a performance timings and primarily varies depending on the number of sticks and the freq as well as how all your other timings are set up, i.e. 4x8GB 2133/9 set (stock) calls for about a tRFC of 278, though by playing with some of the other advance timings (and leaving base timings alone) have gotten the tRFC down to 255 with a slight performance increase (done out of necessity, back with some P67 mobos and early Z77s, that had a lock on the tRFC of 255, without the playing in the advanced timings, most folks had to take their primo 2133/9 sticks to 2133/10 and use additional voltage, the advanced DRAM timings take a long time to get familiar with and 'try' to learn to...
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feebeeteemoff

Honorable
Nov 29, 2012
14
0
10,510


And what do i do with my timing? its currently
"RAM Speed : 952.3 MHz (1:7) @ 11-11-11-28"
 
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S

schmuckley

Distinguished
BANNED
Jul 18, 2011
809
5
19,165
lower the settings one by one..one notch @ a time..reboot..lower 1..reboot..when it doesn't post..go back to the setting that worked.
when i say "the settings" I mean CAS,RAS to CAS,RAS pre,and TRAS..
and TRFC..generally TRAS will be sum of 1st 3..or with the sticks you have..2-3 lower than the sum..TRFC on Intel would be generally speaking double of highest of 1st 3 + TRAS
 
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Y

Y0GI

Splendid
Jul 22, 2013
4,745
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24,960


My timings (XMP) are 8-8-8-24 with tRFC of 128. I tried setting tRFC to 2 X (8+24) = 64 and it would not even post.

Could it be that the recommended tRFC is quadruple the highest of first 3 + tRAS?

Yogi

 
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Tradesman1

Tradesman1

Legenda in Aeternum
Jun 5, 2013
67,883
40
126,960
tRFC is all over the place, it's more a stabilizing timing than a performance timings and primarily varies depending on the number of sticks and the freq as well as how all your other timings are set up, i.e. 4x8GB 2133/9 set (stock) calls for about a tRFC of 278, though by playing with some of the other advance timings (and leaving base timings alone) have gotten the tRFC down to 255 with a slight performance increase (done out of necessity, back with some P67 mobos and early Z77s, that had a lock on the tRFC of 255, without the playing in the advanced timings, most folks had to take their primo 2133/9 sticks to 2133/10 and use additional voltage, the advanced DRAM timings take a long time to get familiar with and 'try' to learn to manipulate
 
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Solution
Y

Y0GI

Splendid
Jul 22, 2013
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Thanks for the explanation, Tradesman!



So true!!

Yogi

 
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schmuckley

Distinguished
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Jul 18, 2011
809
5
19,165


128 is too high for cas8 timings..should be around 88-96 or something..
It varies form platform to platform..Samsung cas11 sticks..yeah..trfc 108-128 @ cas 9-11 settings
 
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Y

Y0GI

Splendid
Jul 22, 2013
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OK - I'll play around with it some more at 88-96 range.

Thank you, Schmuckley!

Yogi

 
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