i7 with 12GB RAM

I have an i7 940 @ 3.6, with 12Gb PC12800 @ 1609 Mhz DDR3 G.SKILL Pi series, on an Asus P6T Deluxe. The system is XSPC Liquid cooled.

 
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I have an i7 940 @ 3.6, with 12Gb PC12800 @ 1609 Mhz DDR3 G.SKILL Pi series, on an Asus P6T Deluxe. The system is XSPC Liquid cooled.

Welcome to the forums - impressive/exspensive spec when considering the price of that CPU.

Did you stop at 3.6GHz deliberately or did you find that the 12gig restricted your clock?

I would have expected your CPU to be able to hit 4GHz - especially when considering your cooling. It would be interesting to know if you hit a brick wall because of the memory and if you did what your CPU did/would clock to with just 3 strips installed?
 
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Thanks Plec. I had the PC built for me to my spec. I do see i7 940`s on water cooling with less RAM achive higher clocks. I think 6 Gb is the sweet spot.
 
Thanks Plec. I had the PC built for me to my spec. I do see i7 940`s on water cooling with less RAM achive higher clocks. I think 6 Gb is the sweet spot.

Such as shame tbh I want to upgrade to 12GB in my new system but there doesn't seem to be any point to it lol. Oh well save money I guess :)
 
I'm currently running 12GB Corsair XMS3 @ 7-7-7-20-2T 1600MHz. CPU @ 4GHZ.

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CM HAF922 / i7 920 @ 4GHz / P6T / 1GB 4870 / 6GB Corsair 7-7-7-20-1T / DELL M1730

Really? How come your signature says something else?:rolleyes:
 
Well, my sig says 6GB @ 1T, I'm doing 12GB @ 2T, not sure if I want to use 12GB all the time, I got the additional 6GB to test. Don't want to keep changing my sig. Is that ok?
 
Well, my sig says 6GB @ 1T, I'm doing 12GB @ 2T,

Encouraging that your only compromise was dropping to 2T to maintain your 4GHz clock and holding on to 1600MHz – or were there others? Did you have to increase voltages and endure higher temps?

More and more ppl seem to be getting success at reaching 4GHz with all slots filled. When the 4gig modules come out at Xmas’ish - I think a lot of ppl will migrate to 12gig with new builds.
 
Plec,

I kept the DRAM, QPI, and CPU voltage the same as when I was running 6GB.

I'm just managing under 80'c in last few days when/while priming, the mobo temp has gone up slightly. Might have to put a fan blowing at the RAM if I kept the additional 6GB in this build, as the RAM does get hot.
 
Thanks - useful to know.

With the current weather those temps seem very good considering - good luck with it.

Are the modules only getting very hot while priming? - if so, you'll probably be ok for day-to-day abuse. But an addition of a fan is a cheap and effective mod for peace of mind.
 
Hey everyone :) Sorry been quiet...am touring the South Island of New Zealand (2 days till I return). Hope all's going well...

To all, got a question that may or may not seem random but, how long does a stock speed CPU last (electronic lifespan)? And also, how about the when its overclocked? Just been curious :)
 
mmm now i am temted to go for 12g with i7 920 D0 Stepping 2.66Ghz on Asus Rampage II Extreme Intel X58. But I dont have a water cooling , will i need a memory cooler ? or it works fine without.

What are the main advantages of having 12g (except cpu clocking) , vista only recognises 3 to 3.5 g , isnt it ?

I`m thinking to get this :
http://www.overclockers.co.uk/showproduct.php?prodid=MY-150-OC&groupid=701&catid=8&subcat=
is it better to go for this cooler ?
http://www.overclockers.co.uk/showproduct.php?prodid=HS-027-CM
 
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What are the main advantages of having 12g (except cpu clocking)

None, unless your doing heavy video editing or have need of a RAMdisk. 6gig will be ample for the average user.

vista only recognises 3 to 3.5 g , isnt it ?

If you only have a 32 bit version of vista yes.

You need a 64 bit OS to recognise anything over 3gig. Just d/l Win 7 64 bit.
 
Hey everyone :) Sorry been quiet...am touring the South Island of New Zealand (2 days till I return). Hope all's going well...

Lucky sod - are you sleeping rough/tents or hostels? (I wish I was a student again…)

To all, got a question that may or may not seem random but, how long does a stock speed CPU last (electronic lifespan)?

Years - and i'm not being flippant.

It depends on the CPU and its work rate/usage - but i would say anything from 8 - 15 years, at a guess. I've never witnessed one die yet… You would have to pretty unlucky for a chip to die on you within 5 years - and when they do it's usually because another component has wiped it out.

And also, how about the when its overclocked? Just been curious :)

Again, it depends on the CPU and the clock ratio and the components running and cooling the chip.

If it's a really aggressive clock i suspect it would shorten the life span considerably - but would probably still out live it's worth/use. (Unless it was insanely clocked - and was living on the edge with heat and voltages.)

A moderate clock would probably be negligible in terms of shortening the chips life span. I’ve clocked nearly all my CPU’s over a course of ~16 years and I’ve never had one die on me yet – and a lot of them are still struggling on in different systems (friends/family/charities.)

Basically, you may as well clock your CPU ;)
 
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There's me thinking 8gb is a jump, and you boys are cranking your machines up to 12gb....Damn..

im like a year behind you, spec wise...lol
 
There's me thinking 8gb is a jump, and you boys are cranking your machines up to 12gb....Damn..

im like a year behind you, spec wise...lol

8Gb is a jump and still not totally necessary unless your work requires it or you just fancy the extra bit of speed flitting between windows. However, it’s getting harder and harder to make an argument against 8Gb now that i7 systems have 6Gb installed by default.

Basically, you shouldn’t be suffering form RAM envy – with 8Gb you have oodles to spare. ;)
 
@Plec...

Lucky sod - are you sleeping rough/tents or hostels? (I wish I was a student again…)

Haha actually I went with family so more like sleeping in the motel :p But it was mean fun I tell ya! If you can make it to that place...GO!

Interesting info regarding the clock, I'm guessing that I could use Gigabyte's EasyTune OC feature and clock it up to like level 2 or maybe even 3...

----

@ukez...

There's me thinking 8gb is a jump, and you boys are cranking your machines up to 12gb....Damn..

im like a year behind you, spec wise...lol

As Plec mentioned...8GB is more than you could ask for - depending on what you do though :p
 
I've got 6gb with another 6gb on it's way, was thinking of having 8gb as working ram and the remaining 4gb as a ram disk with the page file on it, I'm only at 3.6 on my 920 as apart from benching there's no diffference between that and 4.2

workable ? advisable ?

cheers
 
Why don't you buy 6GB to start with and if you find that it isn't enough buy another 6GB...

No point wasting money just to add inches to your e-peen.
 
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