Video RAM is one of the many marketed features of graphics cards. Other features are the boost clock, CUDA cores or stream processors, etc.
You may also be curious and want to know what Video RAM is or how to check it.
Then you have come to the right place. This articles talks about what VRAM is, how it works, why it is important and most importantly how to check the amount of Video RAM your laptop has.
This will help you better understand the benefits of VRAM and how you can use that knowledge as leverage in buying a new laptop.
What is Video Random Access Memory (VRAM)?
Video random access memory, or in short video RAM is a type of random access memory used for storing and processing graphics.
VRAM is different from your laptop’s RAM. You could say it is the RAM of the video or graphics card purposely dedicated to processing graphic-related stuff.
For example, if you look at the spec sheet of the GTX 1070, it says GTX 1070 8 GB GDDR5. Meaning the video ram is 8 GB and the type of RAM is a GDDR5.
A VRAM can be single-ported or dual-ported. A single-ported VRAM can only complete one action at a time.
A dual-ported VRAM does this simultaneously, whiles images are being displayed, new images are being written onto the VRAM.
VRAM was created to be the solution to provide colour graphics at a reduced cost.
VRAM is also known as a frame buffer or video memory
How does Video RAM Work?
What an image or video needs to be displayed, it is first read by the processor as data from the main RAM which is not a video RAM.
The data is then written onto the video RAM and converts the data into analogue signals by a digital-to-analogue converter and sent back to the display.
If the VRAM is single-ported it completes an action before moving onto the next.
A dual-ported VRAM can do both actions simultaneously, one port is dedicated for read-only and the other is accessed by the computer.
Why VRAM is Important?
People mistakenly think that the more VRAM a graphics card has the more performance it will be able to provide.
This is not entirely true.
Higher VRAM allows you to enjoy higher resolutions and detail settings. The more VRAM a graphics card has the more space it has to store and write complex data.
It allows you to game at higher resolutions, max texture quality and visual options like anti-aliasing and FXAA switched on.
You could think of it this way. If you have two laptops with the same specs except they have different RAM sizes: 4 GB and 8 GB.
Guess what? The laptop with the 8 GB RAM will not suffer from performance issues when several applications are open.
But, the 4 GB will suffer if the number of applications opened is more than it can take. If that doesn’t happen, the performance will be much similar to the laptop with 8 GB of RAM.
More VRAM only matters if you know you are going to connect your laptop to multiple displays, play games on high resolution and maxing them out.
Software like Adobe Photoshop or graphics processing software to render complex graphics on very high resolutions also require a lot of video RAM.
But, apart from that if you are not going to use it to its fullest there won’t be a performance difference between a 3 GB GTX 1060 and 6 GB GTX 1060.
Types of Video RAM (VRAM)
All VRAM are not the same. Here are the types of VRAM.
Synchronous Graphics Random Access Memory (SGRAM)
Synchronous graphics RAM is a single-ported video RAM. SGRAM can synchronize itself with the central processing unit (CPU) clock speeds of up to 100 MHz.
The synchronisation is done by transmitting at prescribed intervals and provide a timing pulse with their packet.
SGRAM can act like a dual-ported VRAM by opening two memory pages at once. Examples of SGRAM are the GDDRX (where X is a number).
Multibank Dynamic Random Access Memory (MDRAM)
Also known as Multibank DRAM. A conventional VRAM is monolithic where the entire data is read at one-time. MDRAM stores its memory into an array of 32 KB parts or banks.
This design has made it possible for the banks to be accessed individually increasing the overall performance and can be configured in smaller increments reducing the cost of components.
Window Random Access Memory (WRAM)
Window RAM which has nothing to do with Windows is a dual-ported type of VRAM. It is a very high-performance VRAM and costs very less.
Additional features have been added to it to provide high performance in reading data used for text drawing and block fills.
It is used in the Matrox’s Millennium series video cards.
Rambus Dynamic Random Access Memory (RDRAM)
The fastest type of memory available made by Rambus Inc. The RDRAM can transfer data at speeds up over 1 GHz whilst the SDRAM transfers data up to 133 MHz.
Because of its high data transfer speeds, RDRAM is typically used for video memory on graphics accelerator cards, cache memory, and system memory in high-performance servers and workstations.
How to check Video RAM (VRAM)
Okay, so you know what VRAM is, how it works and the types of VRAM. Next, is to check how much VRAM your graphics card has.
Method 1 – Using CPU-Z
- Download CPU-Z. You can get it here.
- Install and run it
- Open the Graphics tab
- Look for the memory section. The memory section shows the size, type and vendor.
Method 2 – Display Settings
- Press the Windows key
- Click Settings
- Select Settings
- Look for display and click on it.
- Scroll down to the end and choose Advanced Display Setting.
- An Advanced Display Settings window will open. Select Display Adapter Properties for Display 1.
- A window will open showing the Adapter Information of your graphics card. Look for Dedicated Video RAM. The amount shown is the size of your VRAM.