Need a little RAM help

November 15, 2012 at 22:00:17
Specs: Windows 7 home, i7 @ 2700k

I have a "custom" gaming PC that is currently using 16 GB of RAM. Because there's room for another 16 and 32 just sounds bigger than 16, I've ordered 2 more sticks of 8 GB RAM - - to make sure I purchased compatible hardware, I called the manufacturer of the PC ( and they recommended Mushkin blackline RAM. Embarassingly enough, I've never messed with the RAM in this particular computer, and I'm nervous.Theoretically, I know what I'm supposed to do - - but I'm afraid of messing it up. I was hoping someone could give me some tips/advice...
The computer has a Gigabyte ZXD7-UD7-B9 mobo, triple GTX 580s (in triplr SLI), extensive liquid cooling. The case itself is physically huge - - at least 80 lbs. The CPU is a sandy bridge i7- 2700k at 3.5. I don't want to screw up my beloved machine, but I would like to update the RAM... almost forgot: running windows 7 pro.
any help would be appreciated. thanks.

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November 15, 2012 at 22:54:07

Verify the brand and model number of your motherboard. I searched the Gigabyte site and can't find anything close.

Where are you located?

I assume you have the 64 bit version of Windows 7 pro?

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November 16, 2012 at 05:32:55

Memory upgrades are subject to the "law of diminishing returns". Most modern systems will do just fine with 4-8GB RAM. Once you step beyond 8GB, you will see increasingly smaller performance benefits unless you run programs that can actually take advantage of that much RAM. IMO, anything over is 16GB is a waste...the only benefit is bragging rights. Have a look at the following chart:

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November 16, 2012 at 05:50:14

Probably this one:
You should be able to enlarge the image on both links if it will help. Gigabyte should have a tech help link on the site as well if you need it.

For gaming you probably do not need more than 16GB of memory.
To install the memory you open the case.
Ground yourself on the side of the case or a metal light switch cover screw.
Unplug the computer.
Turn the computer on its side.
Locate the open memory slots.
If you need to move any wires out of the way, do so gently.
Move the tabs on the end of the sockets outward.
** If your heat sink or one of your graphics cards blocks one of the sockets, stop and do not bother **
Orient the memory so that the notch aligns with the tab in the slot.
Press the memory straight into the slot evenly on both sides until the end tabs click into the ends of the memory. If one of these do not completely engage, then press that side a bit more. If it does not fully seat without extreme force, push the tabs out and remove the memory. Recheck the size of the memory and location and orientation of the notch. Never force it in. It will take a fair amount of pressure but you do not want to break the memory, socket, or motherboard by putting too much force or letting it twist as it goes in.

You have to be a little bit crazy to keep you from going insane.

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November 16, 2012 at 06:55:35

Fingers, neither of those boards can be correct. The OP stated he has "triple GTX 580s (in triplr SLI)".

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November 16, 2012 at 21:50:27

thanks for all the help -- and I did put down the wrong mobo -- sorry. I wish they'd give 'em actual names instead of a numeric sequence. As for the guy who mentioned the ceiling effect; I feel like I've had that argument 30 times since I made public my desire to go up to 32 GB. Both sides make excellent points (but only one side has bragging rights ;P) Besides, it's fun to tool around inside your system.
I want to thank all of you for taking the time to devote a tiny bit of your gray matter to this - admittedly not-so-interesting problem - and to do so in a way that wasn't insulting or degrading....

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November 17, 2012 at 05:16:11

So, what is the correct model number for the board? I assume you still have the same question?

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November 17, 2012 at 06:03:50

OtheHill, I don't SLI and I have only superficially looked at the process, but it does have 4 PCIe 16x slots (2@16X or 4@8X) and as far as I know that should be enough.
Actually Gigabyte says this: "Support for 2-Way/3-Way ATI CrossFireX™/NVIDIA SLI technology" so it could be the board.

You have to be a little bit crazy to keep you from going insane.

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November 17, 2012 at 09:17:58

Fingers, I don't run SLI either. That said, boards with thre PCIe x16 slots also have triple channel RAM. Boards with quad graphics have quad channel memory. So, I don't think dexi would run only 3 cards in a system that uses quad memory architecture.

The current installed RAM doesn't figure for triple memory architecture though so you could be right.

If dexi will post the board model we can figure it out.

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