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RAM help. Timings and OC.

post #1 of 13
Thread Starter 
Hello!

I've been fine tuning my CPU's OC lately and I really have no idea what I'm doing with RAM.

I have 6GB's of 1866MHz 7-8-7-20 Corsair Dominator GT RAM. I've heard people say tighten timings over faster speeds but what ARE tight timings? Anyone care to give me an in depth idiot-proof explanation and help me OC my system further?


Thanks in advance.
post #2 of 13
tight timings are are running your memory at 1866 at 7-8-7-20 the lower the number the faster the computer clocks data through the mem

lose timings are running your memory at 2000 at 9-11-9-24 so depending on how fast you can increase the clock cycle it may be worth the loose timings to get a higher multiplier out of your memory for cpu OC

each has different advantages as you can see, when you are OC your mem timings can be adjusted to suit the multiplier so it is always imporatant to buy the best memory with the lowest cas so that you have more options when OC your mem

once you have found the absolute most voltage and multipliers your willing to give your CPU then we turn to our memory and see what timings we can loosen or tighten depending on whether the multiplier took it above rated speed or below thats the need to tighten or loosen as far as idiot proof its always a gamble on whether the clock cycle gods are happy or not

as you know we cruise the unanswered thread postings to gain REP if we help then maybe you can boost our REP

Hence Thanks in advance might be more appropriately stated as Have Some Rep Man
post #3 of 13
Thread Starter 
Okay, thanks. I understood that fully.

Thanks for your time, +rep.
post #4 of 13
Quote:
Originally Posted by ibew112 View Post
tight timings are are running your memory at 1866 at 7-8-7-20 the lower the number the faster the computer clocks data through the mem

lose timings are running your memory at 2000 at 9-11-9-24 so depending on how fast you can increase the clock cycle it may be worth the loose timings to get a higher multiplier out of your memory for cpu OC

each has different advantages as you can see, when you are OC your mem timings can be adjusted to suit the multiplier so it is always imporatant to buy the best memory with the lowest cas so that you have more options when OC your mem

once you have found the absolute most voltage and multipliers your willing to give your CPU then we turn to our memory and see what timings we can loosen or tighten depending on whether the multiplier took it above rated speed or below thats the need to tighten or loosen as far as idiot proof its always a gamble on whether the clock cycle gods are happy or not

as you know we cruise the unanswered thread postings to gain REP if we help then maybe you can boost our REP

Hence Thanks in advance might be more appropriately stated as Have Some Rep Man

His original ram is 7-8-7-20 @ 1866. "Tight" timings would not be 7-8-7-20. "Tighter" timings, would be something like:

6-7-6-18 or 6-8-6-18 etc.


Lastly, asking for rep is rude.. if he finds your post helpful, he might throw you a bone (or rep in this case). I guess we have different agendas; I cruise the forums offering my opinion/time/help without second guessing "if I'm going to get rep or not", because I don't need it for my ego. And likewise, if someone helps me, offers to help, etc. I give rep because it was helpful to me, not because someone asked for it.

Just my $.02.
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post #5 of 13
Thread Starter 
I was going to rep the answer regardless if it was helpful, and yes, asking for rep is a bit rude. I need to "loosen" my timings on my ram so I can clock higher, I think it's my ram that's holding me back and giving me instable speeds. I've gone back to 3.8GHz for the time being until I water cool.
post #6 of 13
Quote:
Originally Posted by fr0st. View Post
I was going to rep the answer regardless if it was helpful, and yes, asking for rep is a bit rude. I need to "loosen" my timings on my ram so I can clock higher, I think it's my ram that's holding me back and giving me instable speeds. I've gone back to 3.8GHz for the time being until I water cool.
I understand - it wasn't a bad answer.. I just feel "asking" for rep.. is...eh.. never mind.


Well, if you want to clock your ram higher, starting with very loose timings is a start. You can increase the divider, and see what happens. You may or may not need a voltage bump in dram and/or vtt. You can also change the divider to something like 1600ish, and tighten the timings instead. Depends on what you want to achieve.


What kind of temps are you getting at 3.8 and where you "were" before?
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post #7 of 13
Thread Starter 
Uhhhh, IIRC I was on... 1.225 @ 4GHz and temps were like 70's.
It was a very rough over clock, just wanted to see how much my PDD would go up, it didn't by much so I took it back to my 3.8GHz clock. I get like 60-70's on 3.8, but my voltage is 1.25, which is a tad to high for my chip. TBH I can't be bothered to lower it until I water cool.
post #8 of 13
Quote:
Originally Posted by fr0st. View Post
Uhhhh, IIRC I was on... 1.225 @ 4GHz and temps were like 70's.
It was a very rough over clock, just wanted to see how much my PDD would go up, it didn't by much so I took it back to my 3.8GHz clock. I get like 60-70's on 3.8, but my voltage is 1.25, which is a tad to high for my chip. TBH I can't be bothered to lower it until I water cool.
Have you tried a top tier air cooler like the Silver Arrow?

70's on a 4.0 OC isn't bad.. Some folks use 85c as their threshold, and so do I. I'm sure I can get near 4.5 @ 85c on my little Eco. I'm in the upper 50's @ 3.8 on my i7.
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post #9 of 13
Thread Starter 
I've pretty much got my mind set on WC'ing. It's summer now too and it's about 30-40 deg C in my room so my temps are a bunch hotter.

It's not the temps that lour me into water cooling, it's the noise.
post #10 of 13
Quote:
Originally Posted by fr0st. View Post
I've pretty much got my mind set on WC'ing. It's summer now too and it's about 30-40 deg C in my room so my temps are a bunch hotter.

It's not the temps that lour me into water cooling, it's the noise.

Your room is 86-100F?

Not even WC can fix that.. You might want to invest in a window A/C unit.


And by "noise" you mean lack there of? If you want a dead silent loop, you'll need an XL rad.
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