What is the most RAM a computer has ever had?
Jacob Chaudhary
Jacob Chaudhary
Updated Sep 26, 2017 · Upvoted by Ed Bell, 30+ years professional experience supporting DOS/Windows computers. and Venkata Kusumitha Veeragandapu, Mtech Electronics & Very-Large-Scale Integration, International Institute of Information Technology…
Originally Answered: What is the highest amount of ram a computer has ever had?

I'm going to assume you're not talking about supercomputers, but rather a computer that is feasible (but still very expensive) to consumers.

Supermicro makes motherboards with 4 CPU sockets Each CPU socket has 8 memory slots, for a total of 32 memory slots.

Many companies (i.e. Samsung and Kingston) make 32GB sticks of ram. That means each one of those slots can have 32GB of ram in them.

32GB sticks * 32 slots = 1024 potential gigabytes of memory.

That's one TERABYTE of memory. That's more memory than some people have storage.

EDIT: It's been brought to my attention that Crucial does in fact make 64 GB DIMMs. So, the most amount of RAM a computer can have is 2048 GB, or two terabytes of memory, theoretically. I didn't even bother checking if the motherboard could support this amount of memory.

EDIT 2: To quote Matt Kuhar: “Actually, we have a few servers at my work, HP DL380 Gen 9, that support 3 TB of ram (24 Slots, 128GB Sticks in each). pretty sweet to me!!”

EDIT 3: There's some good questions about what operating systems support this amount of memory.

Red Hat Enterprise Linux (RHEL)

These are probably a good basis, looking at RHEL6's capabilities, they're covered here, titled: Red Hat Enterprise Linux technology capabilities and limits

NOTE: [5] The architectural limits are based on the capabilities of the Red Hat Enterprise Linux kernel and the physical hardware. Red Hat Enterprise Linux 6 limit is based on 46-bit physical memory addressing. Red Hat Enterprise Linux 5 limit is based on 40-bit physical memory addressing. All system memory should be balanced across NUMA nodes in a NUMA-capable system.

Kernel docs

Also if you take a look at the kernel docs, https://www.kernel.org/doc/Docum...

Virtual memory map with 4 level page tables:

0000000000000000 - 00007fffffffffff (=47 bits) user space, different per mm

So 247 bytes = 128TiB = approx. 140 TB
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Нео, това ще е компютъра на следващото двадесетилетие, ще е поне колкото лека кола скъп. Е, как ще се наричат тогава операционните системи не знам. Квантовия ще се появи доста по нататък и едва ли за персонална употреба, не че не ще има персони които ще могат да си го позволят. Е, може и да греша но поне казах каквото мисля. Компютърът никога не е бил евтин не е бърз и не е ефективен особено ако задкомпютърната част не е читава.

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