So, while you have a larger capacity, your overall performance may drop. You'll find a lot of debate online regarding using an equal number of RAM sticks.
You don't have to use an equal number, but it can harm your overall system performance if you decide not to. But don't worry, we have excellent guides to explain the differences.
The iPhone's base architecture is much different from Android. That's why you won't find Apple talking about how much RAM its iPhones have, while they're still as fast as the best Android phones.
Unfortunately, not all Mac models allow you to upgrade your system RAM. For many Mac users, this is never an issue, but it can become an issue for some.
You can do a lot with RAM: mismatched sticks, different speeds, different sizes, and so on. For the most part, you'll just end up with a slower computer. Still, it is always best to match your RAM sticks. That way, you'll receive the best performance available, and there is less chance of corruption or other issues arising from mismatched memory modules.
He enjoys copious amounts of tea, board games, and football. In this article, we'll attempt to answer them all. Let's bust some myths about RAM.
Share Share Tweet Email. Gavin Phillips Articles Published. Subscribe to our newsletter Join our newsletter for tech tips, reviews, free ebooks, and exclusive deals! Click here to subscribe. Apple Watch Series 7 vs. Clubhouse vs. I have the same question Report abuse. Details required :. Cancel Submit. Generally, it is not necessary to install RAM in pairs but most computers today support dual channel memory and there is a performance benefit to matched pairs.
In your case, I suspect that you have installed a combination that the motherboard doesn't support. Why do I have to install my RAM modules in pairs? Posted on March 1, by quill.
What happens if I do not? You would just be giving up the potential speed benefit of Dual Channel memory access Q. Is there higher than dual channel access?
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Search for:. RAM production is one of those things where there are not super super high barriers to entry in the market. If someone can make a stick of RAM that works at some given quality level and they can price it really low then chances are they can find somebody to buy it even if the quality sucks.
There are a lot of people out there on an extremely tight budget willing to chance it or enough people who aren't smart enough to choose good RAM who only care about the price. Those people will take bad RAM if it is cheap if they can possibly do so. For a lot of people, they view RAM as a commodity product where everything is visibly the same and the only thing to do is maximize your bang for your buck by minimizing cost.
In some ways it is and in some ways it isn't. PSUs are the same way. Many view them as commodities and don't understand why they should pay more for the same wattage. There is a good reason, they just don't know it. Yes, RAM internals are a lot the same regardless of maker, but different chips do have different properties. The chips made in Japan are pretty widely known to be better quality and higher price than the ones made in China are. That is just something people have come to accept as a fact of life for the most part.
Therefore the RAM cards that use chips from Japan will cost more and potentially be higher quality than those which use chips from China.
This matters because it applies most to the lowest common denominator, the chips from China. The people who are using unmatched RAM are maximally likely to be in the ultra low budget range. If they were in a higher budget range, they could just buy 4 x 4 GBs of some kind and just throw away the 2x 4GBs of a different kind they already have and they wouldn't care about it. The ultra low budget people I am one of those , however, tend to be the most incentivized to get maximal usage out of what they already have and maximally minimize the cost of new expenditures in order to achieve a given set of goals.
This often means they want to buy cheap RAM that doesn't match what they already have because what they already have is more expensive than something else that is available. So you are really talking about a low quality chip from China being stuck in with another low quality chip from China made by some other company. You get all the drawbacks and none of the advantages. It just takes one tiny defect on one RAM stick to prevent a system from booting completely.
From the point of view of the manufacturer of a motherboard, though, they don't want to service calls like this if they can possibly avoid it. All the motherboard maker can really tell you is to send it back to them, they will test it at their own expense, and they will ship it back to you at their own expense. It is in their interest to limit this to the greatest extent possible.
Quite often, if not most of the time, they just test things, figure out that there is nothing wrong with it, and they send it back with a note saying that. A lot of people just RMA things that aren't broken because they don't know what is broken and what is. Your motherboard maker could probably think that your bad ram is the cause of the problem, but they don't really have any desire to try and test your bad ram. They would rather just tell you to buy something else if at all possible so they don't have to test it.
Especially since bad RAM has a habit of working when you don't want it to and only not working when you do want it to work. They could test the sticks for 8 hours, find no errors, and send it back with a note that it is good when it isn't.
Really, having a QVL is the most pragmatic way that motherboard manufacturers can limit the amount of money that people on ultra low budgets can damage their bottom line, that is about all there is to it. Oct 9, 48, 2, , 9, Ram is sold in kits for a reason. Ram from the same vendor and part number can be made up of differing manufacturing components over time.
Some motherboards can be very sensitive to this. Although, I think the problem has lessened with the newer Intel chipsets. Still, it is safer to get what you need in one kit. Raiddinn: For PSUs there are various protections, higher continuous power at "elevated temperatures" and higher overall power output which raises cost and is differentiator.
Likewise for every single component in a PC. Hard disks do not come in matched pairs to be used as RAID 0, it will suffice if they are same model, and i haven't tried but maybe even different models.
Even crossfiring is possible with slightly different GPUs. This issue is with running dual or triple channel memory, and not only about generic ram makers, every reputed makers market twin ram modules. Why this is need? Each and every ram tested to work properly in single channel should work with same type in dual channel or should not be allowed to sell.
However the question still remains, Chinese make poor quality rams; what exactly is "poor" about them. So what makes their use in dual channel a matter of luck, but not only for generic rams, even branded ones have uncertainty, to a lower extent of course, if not "matched". What exactly differs in ram modules if they have identical tech specs? What is in "quality" that is not is tech specs, and what could go wrong that makes manufactures to ship matched pairs. I know this happens, I just dont know why?
There are not very many companies that make RAM from start to finish. Micron is one of the companies that does. If you go to Crucial's website www.
What happens is the Micron company makes say like 1 million of those little black chips on the RAM sticks. So Micron makes these things and Micron is one of the companies that tests every single part they make in QC.
They figure the cost of replacing the sticks is less than the cost of trying to manufacture RAM chips that are Every part that isn't within specs gets tossed into the "fail" bin. The ones that pass get sent to the next stage in the manufacturing process. Also, I want to point out here that the number and quality of tests performed does matter.
Some manufacturers like Micron run a dozen tests on each chip. Other manufacturers may only run 2 or 3 tests on each chip. Also, if given specifications say anything below 10 and above 20 is a fail in some metric, a maker can opt to fail anything below 12 or above The reading of 10 could have been a 9. If the maker puts the minimum at 12 they can be pretty confident that it would average above 10 if the chip were tested for 10 times as long or times as long. So what happens to all the chips that are in the "bad" bin?
Micron sells them to somebody else that wants them. The buyer doesn't have the capability to manufacture these black chips, but they do have the capability to put them on a board and use them for something if they work. It is easier to put them on a board than it is to make them. Going back to the prior example, if Micron sets the cutoff at 12 but anything above 10 is OK, then there are chips in the fail bin that are rated at both 10 and 11 which are acceptable for use, even though they are below Micron's tolerance level.
The buyer may buy a million of these fails for pennies on the dollar. To get a million fails would require many different production runs because a lot of what Micron makes isn't a fail. The buyer gets these little black chips at pennies on the dollar because a lot of them are actually bad just completely worthless, they have to buy those too just like they are buying the ones that got 11 good but not within tolerance.
The buyer has to try to test each of these parts to determine if they are a "good bad" one or a "bad bad" one. They throw the "bad bad" ones in a fail bin and sell those again to someone else if they can and they keep the 10s and 11s.
With those 10s and 11s, they put them on a board and sell them under their own RAM brand name. Those chips will cause the RAM to fail, but not as often as if the RAM would have been constructed with "bad bad" chips. The distributors who these companies sell to know that they didn't make the RAM chips themselves and they know that all the RAM chips this company uses were failed by Micron, so they won't pay the rates for the RAM from brand x that they would have paid for RAM from the Crucial brand.
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