how do you install more than 4 GB of ram on your motherboard?

J

junwang0808

New Member
hey guys i have Asus P5N-E SLI nForce® 650i SLI motherboard.
it has only 4 ram slots. it takes pc 6400 ram. i am wondering if i want to install 8 GB of rams on it. how do i do that?:confused:

what i am guessing is there are ONE stick of ram that has the capacity of 2 GB? if i am right. can you guys please show me some examples of them and where i can buy them? do they sell them on ebay? thanks guys.!!!
 
First you have to make sure the mother board is capable of handling that much ram. Look up the specs on your MB and see what the max it can handle is. Why do you need 8 gig?
 
For one 2gb dimms generally see a price about 3 times the cost of a pair of 1gb dimms. Depending on whether you are running a 32bit or 64bit version of Windows will be the determining factor when going over a 4gb total. Try about $250-$400 for a pair of 2gb dimms roughly depending on brand and type.

Newegg only has a few brands seen at the present time at ??? 8gb did you say? Try a much higher $569.99 for one of the worst brands seen at http://www.newegg.com/Product/Product.aspx?Item=N82E16820144074

For a pair of 2gb DDR2 800 dimms(far better too), Corsair, Kingston, OCZ, Mushkin are mixed in with(Geil crap) and other brands seen at http://www.newegg.com/Product/Produ...170147+1052416064+1052315794&name=4GB(2+x+2GB)
 
yes i believe my motherboard can handle 8 GB MAX and i have window vista ultimate 64bit. so that will work right? but anyways thank guys.


oh do you guys think the onboard sound card is good enough? if not, then what sound card? do you guys suggest i should buy? ( for gaming )
 
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For most people the onboard sound is good enough.

Yes your board can take up to 8GB using 2GB DIMMs.
 
May I ask why you need 8GB of ram? I'd consider someone extreme if they used 4GB of ram. However, if you are bent on it, here is a decent stick. You'd just buy 2 of these:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820227195

OCZ says this:

An 8gb load is a very high load on your memory controller. To run 8gb you will require BIOS tweaks, proper voltages and 2t timings. This is not difficult and we can guide you. Please see the OCZ Support Forums at the link below and we will be glad to help. Thanks
Click to expand...
 
The capacity seen on newer boards allows for software engineers and other professions to utilize that increase. Planning for some projects here I was looking at 4gb to have a surplus. For the average user even on gaming system a good 2gb is quite adequate with a thought of 4gb for Vista whether 32 or 64bit there. CAD, server type OSs, graphics design, etc. like that would consider a need for a large amount of ram.
 
i have 3 Gb right now. 2 x 512 from Corsair( no heatsink) and 2 x 1 GB( heatsink) from G.skills. so, i guess i don't need any tweek right??? i am thinking about overclocking my quad core 2.4 ghz. any suggestions on how to do that? i am a beginning at OCing...


thanks
 
I'm an AMD fan here. Many back down on the cpu multiplier and then bring up the memory clock for ocing the memory. The one thing often run across on oc forums is to simply back everything down to the lower settings and then proceed to oc one or the other until it maxxes and then back down to the best and most stable setting. From there raise the other to the best.
 
Ionno i doubt gaming computer will ever need that much ram since they just keep making chips with better memory allowing it to reach higher speeds. Id say tops 2GB for the dual channel stuff.
 
The best way to overclock is to lower your Ram divider, and then raise your FSB by steps of 3-5 Mhz until it doesn't boot. Then, you can either back it down a few Mhz on the FSB, or you can add a little bit more Voltage to the CPU, and then try again. You'll want to watch temperatures with Speedfan, and make sure your CPU doesn't get too hot.
 
tyttebøvs said:
If you install 8GB, you'll run into the same problem as those with 4GB and 32-bit systems. They usually loose about 1GB
Click to expand...

It's not that 1gb is lost but simply reserved by Windows itself. The more memory you add the more the board and Windows itself will take. It goes to some degree by percentage or simply think about a sale tax on an item. The bios itself will clearly show the total memory installed at post since that's where the board will conclude it's own detection process.

For ocing the first thing often advised is to lower cpu multiplier, fsb, moemory divider all down and then raise one thing at a time in small increments to find the max where the system remains stable. Jet touched on that there. Many leave the cpu low and see the memory clock brought up. You can then start bringing the cpu multiplier up in smal increments to see where you end stable from there.
 
PC eye said:
It's not that 1gb is lost but simply reserved by Windows itself. The more memory you add the more the board and Windows itself will take. It goes to some degree by percentage or simply think about a sale tax on an item. The bios itself will clearly show the total memory installed at post since that's where the board will conclude it's own detection process.
Click to expand...

The lost RAM is caused by memory mapped I/O. MMIO has priority over RAM, so when overlapping occurs, requests from the CPU will always go to the IO subsystem. This is all happening at the hardware level.

This can be fixed on boards that support memory remapping. A portion of the RAM will be given addresses above 4GB. But if the entire address space (which the chipset supports) is filled, there is no free space to remap this RAM to.

Windows have nothing to say in this.
 
tyttebøvs said:
The lost RAM is caused by memory mapped I/O. MMIO has priority over RAM, so when overlapping occurs, requests from the CPU will always go to the IO subsystem. This is all happening at the hardware level.

This can be fixed on boards that support memory remapping. A portion of the RAM will be given addresses above 4GB. But if the entire address space (which the chipset supports) is filled, there is no free space to remap this RAM to.

Windows have nothing to say in this.
Click to expand...

Windows has nothing to do with...? :confused:

Ask Dan: What's with the 3Gb memory barrier?
You can install at least 4Gb of memory on most motherboards today, but apparently you shouldn't install more than 3Gb if you're not running a 64-bit operating system.
Why? http://www.dansdata.com/askdan00015.htm

Besides any limiattions seen on 4gb, 8gb, or 16gb capable boards it seems even the 64bit verions of Windows still see folly? This is one reason I refer to those as still being in their infancy at this time.
 
The lost RAM is not a Windows issue.

Dan is talking about the upper limit of a 32-bit system. Without PAE, it can only address up to 4GB of memory space, and some of this space is filled with other things.

If you fix the problem with memory remapping, you'll need a OS that can address more than 4GB. That means 64-bit or 32-bit server Windows.

It is not because Windows reserves it
 
Windows reserves certain memory addresses for system processes reducing ram available there for games and programs. The 64bit versions are still new and need to be worked out while the server versions have been known to support upto 128gb being a different type of OS.
 
You're not hearing me. Windows doesn't reserve anything that causes the missing RAM when you install 4GB on a 32-bit system.

Edit: about what amount the BIOS will show. It depends on the BIOS. If there is no memory remapping, and it prints the usable amount of RAM, then it won't show all of it
 
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Windows doesn't reserve anything that causes the missing RAM when you install 4GB on a 32-bit system.
Click to expand...
It doesn't really reserve anything but it does map the memory addresses that would be used to address the last 1GB or so. I suppose you could say that's reserving it
 
MMIO is configured by BIOS. I think he might be talking about the ram that is used for storing PTE tables, kernel and stuff, and this is not part of the missing ram
 
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