In the world of GPUs, there are a few main types of memory that are used. GDDR5, GDDR5X, HBM, and HBM2 are all common options. So, which one is the best? And what’s the difference between them? Let’s take a look!
We explain how video memory differs from system memory as well as clarify what different types of video memory are out there. You are going to be confused about which is the best choice with the abundance of different types of video memory.
We are going to look at the significance of random access memory before diving into the specifics of these memory types. It is important to understand why there are so many different types of memory and why one might be great for a particular user, but not so great for another. First and foremost, it is important to know what RAM and VRAM are used for.
Random Access Memory – RAM
All the way back to 1947, the first ram appeared. It has been vastly improved since then. What is the name of the computer program? Hard drives and optical discs are different from RAM in that they are used for data storage.
Data can be changed in any order and it can access data in the same time frame regardless of where it is located. Depending on how you prioritize memory, it’s possible that RAM ranks highly in terms of importance.
The data used with RAM is between cache memory and the hard drive. The cost of data transfer is lower due to the fact that the CPU will work on data first using cache memory for the simplest operations.
Video RAM – VRAM
Dynamic random access memory, also known as VRAM, is a specialized version of DRAM. VRAM is designed to help the graphics processor in terms of memory, just as RAM is used to supply the computer with data. VRAM helps the graphics chip by holding information such as shadow maps, lighting, and texture. The most obvious factor in determining the required amount of VRAM is the display resolution.
This is the oldest type of memory that we will be looking at, but that doesn’t mean it’s the worst. It still has uses, even though it’s no longer the best out there. The name of the memory is GDDR5 SDRAM, which stands for graphics double data rate type five synchronous dynamic random-access memory.
We will do our best to break it down, even though it might look confusing. The double data rate part of the graphics is easy to understand. If that isn’t enough, just know that a bus is performing data transfer at rising and falling edges of the clock signal. The performance of the previous standard SDR was doubled because the data transfer was available twice during a single clock cycle.
The memory type is a direct successor to GDDR5 and was initially dismissed as just another update. This perception quickly changed, and it is now clear that GDDR5X improved upon GDDR5 as much as GDDR6 did. The newest type at the time was called GDDR5X and it doubled the specifications.
The single-chip bandwidth for GDDR5X is 56 gigabytes per second, while the single-chip bandwidth for GDDR5 is 28gigabytes per second. It is doubled in the memory clock department, where it scores 14 Gb/s (1750 MHz) and its predecessor only 7 Gb/s, although this is still nowhere near HBM.
The initial reception was better than expected, but this update to GDDR wasn’t as eagerly-awaited as GDDR5X. Although the story of generational jumps has already been explained, let’s compare the numbers anyway for clarity’s sake. The data rate for GDDR5 peaked at 8 Gb/s with a peak bandwidth of 336.5 billion bits per second and 12 gigabytes of capacity. The numbers are from the graphics card from the company.
High Bandwidth Memory is what it is referred to as. This is still a type of video RAM, even though it doesn’t have the GDDR prefixes. The same role is performed by it, as it handles frame storing in the frame buffer and storing textures, lighting information, etc. GDDR5 requires chips to be placed directly on the PCB and spread around the processor on top of the graphics card. This method is quicker than any other method.
To increase the number of chips on the card, there will be more space on the card, which requires further data and power traces.
This causes manufacturing costs to go up and ends up being more expensive for the end-user. On the other hand, HBM’s stacked dies communicate via micropumps and through-Silicone vias, which, as the name suggests, goes through the dies and allows for quicker communication and less power consumption.
Just as GDDR5X is a sequel to GDDR5, so is HBM2 to HBM. The same could be said for the performance of both GDDR5X and HBM2. To avoid confusion, it is important to mention that HBM2E is not to HBM2 what GDDR5X is to GDDR5.
We are going to look at both HBM2 and HBM2E in this section. The maximum transfer rate for a single pin is 2 Gb/s, which is double that of HBM, which has a maximum capacity of 8 GB. The bandwidth was increased two-fold from 128 gigabyte/s to 257 gigabyte/s.
So, what’s the verdict? GDDR5X is currently the best option for graphics cards. It offers high bandwidth and low power consumption, making it perfect for gaming laptops and other portable devices.
If you’re looking to build a high-end gaming PC, however, GDDR6 is the way to go – it has even higher bandwidth than GDDR5X and consumes even less power. HBM2 is also an excellent choice for ultra-high-end builds, offering unparalleled performance at a lower price point than GDDR6. Finally, if you need something that can handle both gaming and professional applications, consider using HBM2 or GDDR5X in tandem. Thanks for reading!