Выбор оперативной памяти (#4) - [29] :: Выбор комплектующих

lizun

Цитата:

Чем-то еще?

На английском, но разберетесь
https://www.quora.com/What-component-determines-the-amount-of-maximum-RAM-on-a-motherboard

Цитата:

As others have said in their answers, there are multiple factors that control how much RAM can be placed on a motherboard, and the weakest link is generally the determining factor.

1st and foremost, is the CPU and the addressable memory by it’s instruction set. With the modern 64 bit processors, this is 2 ^ 64 bytes or 16 exabytes

Next is the physical address bus that the CPU (and it’s memory controller) permit. These are either 2 ^48 or 2^52 depending upon the processor, but there may be versions of CPU’s (perhaps laptop versions) that would not use all these address bits to lower power.

The number of physical memory slots you can have is limited. To minimize noise and to be faster (by being closer to the CPU without additional electronics), these must be close to the CPU, but that limits you to the number of slots you can have. Most desktop systems today have either 4 or 8 slots, laptops typically only 2. Related to this is the number of Printed Circuit Board (PCB) routing layers, and the size of the circuit lines used which may limit the number of address and data lines you can wire from the CPU to the memory slots.

The size of the memory that can be physically contained on one memory module. At this moment 16 GB / card is typically available at reasonably fast speeds, and start to slow down for 32 GB modules. While there are some 64 GB modules, these are hard to find on the commercial market.

The operating system may have limits that it can handle, but not normally. Upper RAM limits for the different 6x bit editions of
- Windows 10: Home edition-128gb, All others 2TB
- Windows 7: Starter and Home Basic-8GB, Home Premium-16GB,Professional and up-192GB

Finally, the BIOS needs to support the memory card size, configuration and initialization. For the most part, this will work for most memory modules made at the time of the motherboard availability

So practically, the main limitation is the number of memory slots and maximum memory module size that is allowed (and possibly a low end version of Windows). This means 8 memory slots and either 16 GB or 32 GB modules, so either 128 GB or 256 GB total.

Модерирует : Akam1, Dr_StandBy, vertex4
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