Overclocking i7 950 with 24GB of ram

[amrgb]

I've read many times in many places that populating the 6 dimms, especially with 4GB modules, will do all sorts of things to your overclocking ability. And none of them good

So, what do you think would be a decent (not record breaking ok) goal for a 24/7 overclock of an i7 950 with 24GB of ram on air, and for the ram as well?

[acebmxer]

all depends on how far you feel you wanna push qpi/vtt voltage. Its allready gotta be through the roof with 24gb ram.

[Johnny87au]

Take a look at these two links
http://forums.anandtech.com/showthread.php?t=2064891
http://www.xtremesystems.org/forums/...d.php?t=249146

[Aphex_Tom_9]

^ first thread isn't very helpful, second one has actual results
"Went with 6 x 4GB DDR3-1600 from G.Skill (Ripjaw series) and it overclocks like a champ to 4.0Ghz on the MSI X58 Pro-E board with all 24GB onboard. Just did a simple 191 multipler to 4.02-ish and everything is great."

[fl0w3n]

Just out of curiosity, what is your need for 24gb?

Good luck anyways

[amrgb]

The need is about the same as the need for a quad or hex core cpu: not needed, but nice to have on occasion.

So, it looks like there's not much experience with that much ram. Most of what I've read is just theories or vague statements from those who actually have a setup like this running.

[fl0w3n]

The need is about the same as the need for a quad or hex core cpu: not needed, but nice to have on occasion.

So, it looks like there's not much experience with that much ram. Most of what I've read is just theories or vague statements from those who actually have a setup like this running.

Ah, in that case I would have went SR-2

[amrgb]

My pockets are not so deep. Besides, I doubt I could find one of those here in Portugal. I'm not in the US anymore.

[fl0w3n]

My pockets are not so deep. Besides, I doubt I could find one of those here in Portugal. I'm not in the US anymore.

Ah I see.

Well good luck with your endeavors. I hope all sticks are well.

[amrgb]

How about 1790Mhz well?

[Aphex_Tom_9]

if it's not really needed, i'd go with 12 or 16 gb to make things easier to manage. i'm about to put 12gb in my system because i actually need it for 3d rendering.

[amrgb]

I use it for simulations in matlab. That is, I might use it in the future.

In the meantime, it's sweet (or shold I say, insane) to run a VM from a ram drive.

[Johnny87au]

Overclocking with 24gb ram isnt gonna be all that great tbh, gonna require massive amounts of vtt to get all 24gb to run @ the speed you want..

[amrgb]

Overclocking with 24gb ram isnt gonna be all that great tbh, gonna require massive amounts of vtt to get all 24gb to run @ the speed you want..

How much do you mean by massive? Sorry, but I've been out of the game for almost 5 years.

[miahallen]

Based on feedback from guys trying with my overclocking guide, I would venture a guess that DDR3-1600 9-9-9 should be fairly straightforward. Going up towards DDR3-2000 9-9-9 or tightning down to DDR3-1600 7-7-7 would be where the going will get tough. But it's really hard to speculate as it's all determind by the robustness of the IMC in the CPU you try to use....they vary widely. The only way to know for sure is to try

[Johnny87au]

How much do you mean by massive? Sorry, but I've been out of the game for almost 5 years.

24gb, u see the higher the ram speed the higher ur NB "IMC" needs to be, If your going with 24gb get a speed of 1600, im not sure if u can get 2k kits but trying to get it to run @ those rated speeds would be quite hard and couldnt imagine you pulling a decent overclock on your cpu..

[amrgb]

OK, it looks like I won't get what I was looking for, some unbiased feedback (unbiased by my results, that is).

So, I'll just move on and post my results, so you can comment on them.



This screen was just to post here. I've run LinX for 18 hours using the 22GB of ram, overnight Prime 95 blend again using 22GB of ram with this setup, but never saved any screens.

Memories are Corsair XMS3 2000Mhz CL9 and this is aircooled with a Termalright Silver Arrow.

What you think? Above/below your expectations?

[fl0w3n]

OK, it looks like I won't get what I was looking for, some unbiased feedback (unbiased by my results, that is).

So, I'll just move on and post my results, so you can comment on them.



This screen was just to post here. I've run LinX for 18 hours using the 22GB of ram, overnight Prime 95 blend again using 22GB of ram with this setup, but never saved any screens.

Memories are Corsair XMS3 2000Mhz CL9 and this is aircooled with a Termalright Silver Arrow.

What you think? Above/below your expectations?

Slightly above my expectations, nicely done. However, I think you should test 12gb high frequency lowest possible timing as well, to see if you like the difference and if it is noticeable. Also, I try seeing if the 12gb setup will allot you more headroom on the CPU and QPI.

[Johnny87au]

quite impressed actually! your chip has a strong controller

[amrgb]

Yeah, I must say I wasn't expecting this either. Seems like an average overclock for the usual amounts of memory.

Judging by the voltages people seem to be using I think the limit on the cpu side are the temperatures. It's already too hot to up the voltages further.

fl0w3n, someday the curiosity will hit me, and I'll do that. But I've been testing the computer for a week and now I need to work on it Another problem is that 2 memory modules are covered by the Silver Arrow (4 if I count the fan which has to be placed just right to fit in the case), and are a pain to take out.

Edit: I'm also stable with x21 uncore (3760) but that needs 1.32v-1.34v, and I don't think it's worth it.

[fl0w3n]

Yeah, I must say I wasn't expecting this either. Seems like an average overclock for the usual amounts of memory.

Judging by the voltages people seem to be using I think the limit on the cpu side are the temperatures. It's already too hot to up the voltages further.

fl0w3n, someday the curiosity will hit me, and I'll do that. But I've been testing the computer for a week and now I need to work on it Another problem is that 2 memory modules are covered by the Silver Arrow (4 if I count the fan which has to be placed just right to fit in the case), and are a pain to take out.

Edit: I'm also stable with x21 uncore (3760) but that needs 1.32v-1.34v, and I don't think it's worth it.

Oh yes, I forget sometimes that there actually is a purpose to building these computers sometimes, and that is not to just test

haha I also forget the inconveniences of good air coolers because I have been spoiled by water

[amrgb]

Oh yes, I forget sometimes that there actually is a purpose to building these computers sometimes, and that is not to just test

I can guarantee you that on the first week my wife thought the computed was just to run LinX

She was shocked when she saw me actually working on the computer.

[recent]

Btw, very nicely done ? so it seems like, if i want 12 GB on x58 OC, is the 6 x 2 or 3 x 4 gb better ?

[Johnny87au]

Btw, very nicely done ? so it seems like, if i want 12 GB on x58 OC, is the 6 x 2 or 3 x 4 gb better ?

4x3gb

[Aphex_Tom_9]

lol what? 3gb dimms? did they ever make those?