The x64 architecture supports much greater amounts of virtual and physical memory than the x86 architecture, allowing applications to store large data amounts in memory. Additionally, x64 expands the number of general-purpose registers to 16, providing further enhancements and functionality.A 64-bit system uses 64-bit memory addresses, which allows for a much larger addressable memory space compared to the 4 gigabytes (GB) limit of a 32-bit system. This means that a 64-bit system can utilize more random-access memory (RAM) and handle larger files and datasets more efficiently.It is commonly believed that native 64-bit applications are faster than 32-bit applications, but that's not always the case. In fact, some 64-bit applications are slower because data structures tend to be larger in 64-bit applications (again, due to the larger pointers) and moving them around can slow things down.

Is 64-bit software better than 32-bit : With 64-bit apps, you have up to 128 TB of virtual address space which the app and any add-ins running the same process can share. With 32-bit apps, you might get as little as 2 GB of virtual address space which in many cases isn't enough and can cause the app to stop responding or crash.

Why is x86 still used

> x86-64 CPUs keep real mode around so that operating systems can keep booting in the same way … It's part of the PC compatibility ecosystem that gives x86 CPUs unmatched compatibility and longevity. In comparison, you could re-use, update, and repurpose any old x86 machine to do whatever you need.

Are there any 128-bit processors : Thus, there are currently no mainstream general-purpose processors built to operate on 128-bit integers or addresses, although a number of processors do have specialized ways to operate on 128-bit chunks of data, and are given in § History.

Thus, there are currently no mainstream general-purpose processors built to operate on 128-bit integers or addresses, although a number of processors do have specialized ways to operate on 128-bit chunks of data, and are given in § History.

A 64-bit register can theoretically reference 18,446,744,073,709,551,616 bytes, or 17,179,869,184 GB (16 exabytes) of memory.

Is 128 bit faster than 64-bit

Between 128 bit and 64 bit versions of same graphics card, 128 bit would have better performance in games. Since GPU cache can not hold all the game content, eventually some data will be streamed from video memory to GPU. There, 128 bit will have advantage over 64 bit.32-bit applications optimized for a 32-bit system won't gain any advantage from running on 64-bit hardware. To the contrary, penalties from emulation and compatibility issues described above may apply. However, non-optimized applications may gain some performance from running on 64-bit machines.CPUs based in Intel's x86 instruction set still top the performance charts, at least in the consumer space. But when it comes to the performance per clock cycle of a single CPU core, the very latest Arm chips arguably have the edge.

There are trade offs here. x86 CPUs tend to have very fast computing power and allow for more clarity or simplicity in the programming and number of instructions, but it comes at the expense of a larger, more expensive chip with a lot of transistors.

Do 32-bit processors still exist : After more than 30 years, Intel has announced that it will be phasing out its 32-bit CPUs. The company made the announcement on January 25, 2023, and said that the transition to 64-bit CPUs will be complete by the end of 2025. 32-bit CPUs were first introduced in the early 1980s.

Is there a 256-bit processor : There are currently no mainstream general-purpose processors built to operate on 256-bit integers or addresses, though a number of processors do operate on 256-bit data.

Do 32-bit computers still exist

After more than 30 years, Intel has announced that it will be phasing out its 32-bit CPUs. The company made the announcement on January 25, 2023, and said that the transition to 64-bit CPUs will be complete by the end of 2025.

A 128-bit processor may never occur because there is no practical reason for doubling the basic register size. One of the reasons for migrating from 32-bit to 64-bit computers was memory (RAM) addressing; however, for all practical purposes, there was only a need for a few more bits beyond 32 (see binary values).As of 2022, there are no 128-bit computers on the market. A 128-bit processor may never occur because there is no practical reason for doubling the basic register size.

How overkill is 64GB RAM : 64gb is 2x overkill. Yes, I would not go higher then 32 GB to be on the safe side with future releases, just very little point in 64 GB for gaming currently. So if that system is going to last you a while may as well go for 32 if able. 16gb is plenty.