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Timings VS. Frequency

post #1 of 16
Thread Starter 
I'm at a little dilema here. After having to RMA countless ram kits over the years, I really don't want to touch my vdimm at all. So, as my motherboard doesn't have an option for 1.35v, I'm forced to either do 1.3v or 1.4v.

My ECO's are rated at 1600MHz 7-8-7-24 @ 1.35v. And although I got them to boot at 1600MHz with 1.3v, I don't think they're 100% stable.

So my options are 1333MHz @ 1.3v w/ the tightest timings possible, or 16xxMHz @ 1.4v.

I know .05v isn't a big deal, but if there's not a significant performance loss I'd rather just keep my ram cool. What are your thoughts?
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post #2 of 16
Intel CPUs don't really care about timings too much...you want the 1600MHz bandwidth

I'd take 9-9-9-24 at 1600MHz over 7-8-7-24 at 1333 without a second thought.
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post #3 of 16
With the integrated memory controller on your chip, latencies are inherently reduced so frequency > timings (if you want to OC etc).

Also G.Skill states those sticks can handle up to 1.65v so bump it to 1.4v and don't worry about it.
Lastly, those are AWESOME sticks, I had them before I moved to an 8GB kit and you can OC the snot out of them
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post #4 of 16
I've used the G.Skill Eco kits before and they are awesome bang for buck sticks. If you grow some balls, you can push the voltage to 1.65v and run them at over 2000MHz like I've done in the past with better timings than almost every $150 2133MHz kit out there. People are way too scared with voltage nowadays...especially when overclocking ram. I think everyone forgets the ddr and ddr2 days when over 2v was pretty normal.
post #5 of 16
Thread Starter 
I don't doubt these are great overclockers, but I'm also running 4 sticks (4x2GB).

How much do you guys think that will hold me back?
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post #6 of 16
Quote:
Originally Posted by .Andres View Post
I don't doubt these are great overclockers, but I'm also running 4 sticks (4x2GB).

How much do you guys think that will hold me back?
I had 4x2 for a bit, but I didn't OC them at that point (only when I had 2x2).

What I can tell you though is that you're likely going to have to increase your IMC voltage to keep the chip stable while OCing w/ 4x2.
Won't be too much in all likelihood, I think I went from 1.28v to 1.31 and that did it for me.
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post #7 of 16
Thread Starter 
Quote:
Originally Posted by candy_van View Post
I had 4x2 for a bit, but I didn't OC them at that point (only when I had 2x2).

What I can tell you though is that you're likely going to have to increase your IMC voltage to keep the chip stable while OCing w/ 4x2.
Won't be too much in all likelihood, I think I went from 1.28v to 1.31 and that did it for me.
Would that be my QPI VTT/IMC voltage? I currently have it at 1.21v.
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post #8 of 16
timings vs frequency is asked alot these days.. for intel, timing won't matter as much as frequency..

However for some cases such as benchmarking... timings play a huge role. Especially the subtimings. 2d you really like to get a tight tRCD (second timing after cas latency).. for normal usage.. you'd benefit for as high frequency you can get and loose timings don't matter

EDIT: like candy says.. increase vtt for 4 modules installed.. try 1.3v
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post #9 of 16
Quote:
Originally Posted by .Andres View Post
Would that be my QPI VTT/IMC voltage? I currently have it at 1.21v.
Yep VTT, with 4x2GB you'll likely need to up it a bit to keep everything stable when OCing your chip (again YMMV, compared to mine so it would be adjust as needed).
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Stugots III
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post #10 of 16
You do know default voltage for ddr3 is 1.5v right?

Sent from my LG-VM670, Running IHO CM7.1.
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