[Phantom_Dave]

You do realize that when you add 4 dimms vs. 2 dimms the stock timings rated for a single pack of dual channel memory increases? The stock timings stated on a pack of dual channel is only guaranteed for 2 dimms.

If you want guaranteed stock timings with 4 dimms you need to buy a quad channel pack.

 

[Phantom_Dave]

As I already said, you will almost always have to purchase a pack of quad channel memory in order for it to run at the specified timings/volts. What the OP described is exactly what usually happens if you try to use 2x packs of dual channel memory. The timings will increase at the specified voltage.

For example, this pack of dual channel G Skill runs at 6CL for dual channel but at 9CL for 4 dimms. (Check the reviews)

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231444
Quote:

Pros: bought a second kit of this memory. When running with 4 x 2gb sticks you will need to tweak your settings. Right now Im running 4 x 2gb @ 2133MHz 8-10-8-28 2n VDRAM 1.62 V. High quality memory, I recommend.

Cons: CAS 6 with 4 dimms is probably not going to happen, but G.Skill only guarantees these work with 2 dimms, fyi.

But here is a quad channel kit which I bought that guarantees the timings/volts for 4 dimms:

http://www.gskill.com/products.php?index=348&c1=&c2=&search=UmlwSmF3cw==

Note: these are only the guaranteed timings/volts. Naturally you can modify the timings/volts manually. But you may not be able to get it as fast as you expected from 2 dimms.

 

[Phantom_Dave]

Quote:

Originally Posted by pioneerisloud;14244725
Mine is 2 dual packs, and it works just fine. My last rig ran the same (Kingston Hyper X DDR2). And my rig before that was also 2 dual packs. I've NEVER bought a quad pack, simply because 2 dual packs is cheaper.

Not saying you're wrong, but I've NEVER experienced this problem, unless the memory itself was faulty.

If he's indeed, failing stress tests then its either a vcore issue or bad RAM. He said that it fails when running full system memory, which leads me to believe its a bad stick or two of RAM in there.

It's not always the case that the timings will change when using 2x dual channel. But often they will. I don't know why, I only know it does. Maybe higher quality (more expensive) ram is less likely to have issues with 4 dimms? IDK. But what the OP describes is what I've read in many reviews (namely from G Skill).

 

[Phantom_Dave]

Quote:

Originally Posted by pioneerisloud;14244835
Hmmm......

Here's what I've ran in 2 dual packs
4x1GB of Corsair XMS DDR400, 2.5-3-3-6 (ran stable at DDR580, 2.5-3-3-6-2T)
4x2GB Kingston HyperX DDR2-800, 5-5-5-18 (ran stable at DDR2-1100, 5-5-5-15-2T)
4x2GB GSkill Ripjaw X DDR3-1600, 9-9-9-24 (runs stable at DDR3-2133, 9-11-9-28-2T, and my sig speeds).

You could be onto something though. I can test it once my 16GB of Ripjaw X CL8 DDR3-1600 comes in next week. This would especially make sense, since this is my first set of GSkill RAM, and my first set of DDR3, and it just happens to be the budget junk RAM.

I don't doubt that you have ran what you have said. I do know that the only difference between between dual, tri, and quad channel memory is that the manufacturer grouped up ram that they tested and confirmed to run at the timings/volts they state on the package for the enclosed dimms.

It could be possible that you happened to get the exact same ram that would have been grouped into a quad pack and the OP got ram that would not have been grouped into a quad pack. There is no difference in the ram since the mobo determines dual, tri, and quad channel, not the ram (you probably already knew this).

Other than that, IDK. I only know what I've read in G Skill reviews. I was looking for G Skill exclusively so I haven't read reviews on other brands of ram lately. In any case, I feel this is information which should be shared.

 

[Phantom_Dave]

Quote:

Originally Posted by kazama;14247050
Seems then that using two kits memories becomes CL9?

I will try at home 9-9-9-24-2
dram voltage 1.6
vccio 1.10

I will do the linx (all memory) test again.

If crashed again maybe i have to up more the vcore? actually is at 1.33 in bios, rest fo values in auto.

Will be the vcore be less if i change the memories for a kit 4gbx2? i begin to think that more dimms more vcore needed.

If you are booting up at CL9 instead of CL7 with the ram settings to auto, then it's working as some other G Skill has been due to it being rated for 2 dimms and not 4 dimms. This seems to be an issue with some of their dual channel ram kits.

I thought from your first post that it was booting for you but only at higher timings like I stated above?

If it's not booting at all with 4 dimms then IDK what is wrong. But if you can boot with 2 at a time, and then switch them so you boot with the other 2 as well. Then the problem is likely not the ram.

 

[Phantom_Dave]

Okay, then yeah. It seems to be the problem I thought it was. It's an issue with 4 dimms vs. 2.

If you can make it faster and keep it stable by adjusting the volts as pioneerisloud suggested, then go for it. But as he already said, you aren't going to get a very noticeable increase in performance even if you got it down to CL7. You would likely only see it in a benchmark.

But as a last resort, you may be able to RMA it and get a quad channel kit that will run like you want.

 

[Phantom_Dave]

I agree. I only went quad channel to get 16GB or else I would have went with dual channel.

As far as brand I am biased towards G Skill. But Corsair is also good. Personally I would get the lowest CAS Latency I could get with 8GB in 2 dimms (2x4). But the difference is really minimal. Bang for the buck would be higher CAS Latency. I'm just an enthusiast.

I would definitely stick to 1.5v or less though... People say that 1.6v is running fine. But just because it's running fine doesn't mean it's not having an effect on the life of the CPU. Nobody can say for sure yet since it hasn't been out long enough to prove it either way. It's all speculation. So in those cases I follow what Intel recommends if I want to extend the life of my CPU.

You don't die from smoking cigarettes right away, but I don't think anyone will argue that it shortens your lifespan.

 

[Phantom_Dave]

Quote:

Originally Posted by Inteller;14248886
Actually, it's the memory itself.
If you buy a set of memory (2x4Gb), it will run fine at it's rated speed and voltage.
If you buy 2 of those same sets, they will not run at with the same timings. The timings have to be loosened, due to the amount of ram.

So your 2 combined sets of RipjawsX, wont run at 7-8-7-24
You have to loosen the timings, for them to run properly.

Thats why it will boot up and run, when you have the timings at 9-9-9-24
This means that timings of 9-9-9-24, are very close to, or at stable timings.

But 16Gb's even of the same brand and make, wont run at the 8Gb rated timings of 7-8-7-24

That's what me and pioneerisloud spent a page or two discussing already.

Which is why you buy quad channel for 4 dimms if you want specific stock timings to start with. Like the 16GB CL7 ram in my sig. That's stock speed.

 

[Phantom_Dave]

No problem. I took no offense at all. I'm just happy that someone else knows what I'm talking about.

 

[Phantom_Dave]

That's cool! I'm new to overclocking but have done some reading on it here and there over the years. I've never tried it yet though. I plan to with my new build once it's done.

But I'm very old school to computers. 1st puter was a TRS-80, 2nd was a commodore 64, the list goes on, haha! What's an operating system?