Discussion Forums > Technology
How to build pc?
NaRu:
--- Quote from: Freedom Kira on January 09, 2012, 08:10:50 AM ---
--- Quote from: krumm on January 09, 2012, 04:23:59 AM ---I guess ill explain what I was talking about in my post questioning the logic of filling the black slots first. First ill start off with a different question. Why if I have 2 dimms and 4 slots would I use a solution that gives lower performance, when the higher performance solution has no adverse effects?
There is really no reason to not use dual channels. If I had a 4GB dimm and 2 2GB dimms of the same speed and placed the 4GB dimm in the first black slot like in the picture from clannad, I would get the same performence from putting the 2 2GB dimms into both black slots. But, if I was to put one of the 2GB dimms in the first black slot and the other dimm in the first blue slot I would get more performance at no sacrifice. There is no reason to go out of the way to pick up another ram stick and place it in the same channel. If you want more ram on the other hand go for it, but at least put it in the other ram channel(the blue slot).
Ill end with acknowledging this. Does it really matter? Probably not for most people. You may only get 1-2 seconds faster decompression of your pirated Photoshop, but ill take it.
--- End quote ---
I think the issue here is a misunderstanding of what the colors mean. If I understand correctly, you believe that each color denotes a particular channel, while I think that each chunk of two denotes a particular channel, where the colors denote what slots run in parallel in separate channels. In this situation, putting one stick in a black slot and one stick in the blue slot next to it will mean that they end up running in the same channel, while putting them both in black slots would mean they run in parallel in separate channels. I hope that made sense.
Your logic makes perfect sense. There is absolutely no reason why you should not dual channel your RAM when given the option. That, along with the common instructions for users to fill in like-colored slots first, is why I believe you are incorrect in how you think channels are denoted.
For some further proof, take a look at the colors on any six-DIMM LGA1366 motherboard. As you probably know, LGA1366 is known for being triple channel. I have never seen an LGA1366 board with three colors for their RAM slots. There is also no reason for mobo manufacturers to break convention just for a particular socket.
--- End quote ---
The point of the colors is show you which slot to use for dual channels. Example: you have 2 1GB sticks (same speed) and you have 4 slots for ram. The first slot is blue, second is black, third is blue, fourth is black. If you want dual channel you need to put your 2 sticks in the blue slots. If you put it in the first 2 slots it will still work but it will be in single channel.
With newer boards they took away the colors because now if you want triple channel you need to fill up 3 slots. The 1st slot, 3rd slot, and the 5th slot. The 2nd, 4th, and 6th slot is there for you to add even more ram for that channel. 1st and 2nd slot is channel 1, 3rd and 4th slot is channel 2, 5th and 6th slot is channel 3.
Freedom Kira:
^ Yep, we have the same idea. I hope my post was not that poorly worded.
They still have the same color scheme AFAIK. For a six-DIMM board, it's usually color/black/color/black/color/black, where color can be blue, red, yellow, or whatever.
krumm:
Ignore what I said about slots to put it in, but not the dual channel part. My mix up is my fault do to working on too many amd computers. It is vary rare for me to see a computer with more then 2 slots, and they are usually amd with more slots. I pulled out a couple mobo manuals(5amd, 2intel) to check and the intel ones do skip slots in my small sample. Following the colors does seem to be correct. I guess the lessen for me is don't assume brands follow the same standard. I always look at the manual anyway for best compatibility(I got a amd mobo that likes slots 3 and 4 more).
Sorry for the misinformation, but I was corrected so no harm done.
Freedom Kira:
AMD has a different convention, huh? I'll have to keep that in mind. At the same time I wonder if your particular board is just special like that.
It's really weird though, since motherboards are typically not manufactured by Intel or AMD, and most board manufacturers produce for both companies.
v That's really odd. Looks like I'll have to keep my eyes open. Did they at least all have the colors representing the same thing (i.e. it's better to fill in like-colored slots first)?
krumm:
--- Quote from: Freedom Kira on January 10, 2012, 10:12:18 AM ---AMD has a different convention, huh? I'll have to keep that in mind. At the same time I wonder if your particular board is just special like that.
It's really weird though, since motherboards are typically not manufactured by Intel or AMD, and most board manufacturers produce for both companies.
--- End quote ---
It's not just my board but, all 5 AMD boards I happened to have manuals still for. On all of them slot 1 and 3 were a channel and slot 2 and 4 were a channel. So for dual channel they all used slots 1 and 2 except one that ran better with slots 3 and 4. These boards range in age and manufacture. a biostar with DDR ram, a ASUS and DFI with DDR2 ram, and 2 MSIs with DDR3 ram. The 2 intel boards I looked at are like you guys were taking where slot 1 and 2 are the same channel.
I looked at some other boards on newegg and looked at the slot colors. It turns out that not all AMD boards are like this, if what you guys tell me about the colors is true. Some have 2 same color slots side by side and others alternate. The intel boards all seem to alternate color or are all the same color.
I have no clue why this seems to be, but im too lazy to research further.
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