Server Adapter vs Computer Adapter: What’s the Difference

Server adapter and computer adapter are two types of network interface cards. Both the two types can serve the same purpose that connects the server or computer to the internet for data communications. Then do you know what’s the difference between the two NIC card types? Here first introduces the two network adapter types, then explains their differences in transmission speed, CPU utilization and reliability.

What Is Server Adapter?

Server adapter, as the name implies, is installed on the motherboards of a network server. Nowadays, newer server motherboards may have multiple network interfaces built-in, which can bring functions like load balancing, separation of traffic and so on. This makes server network more reliable and secure. Network interface card is an indispensable component of a sever. Server cannot work without a network card, since the primary mission of the network server is to query, calculate and analyze the computer instructions from the internet, then deliver the final results via the network card to the destination clients like a computer, or a network switch. Therefore, a NIC card means everything to the server.

server adapter

Figure:Example of server adapter.

What Is Computer Adapter

Computer adapter is the device that allows a computer to be connected to a network. Most computers are designed with one network interface that has been built into the motherboard. Unlike the network server, computers without a network adapter can still function. For example, two computers may exchange data with each other via bluetooth, or USB flash disk.

Server Adapter vs Computer Adapter: What’s the Difference?

The main differences between server adapter vs computer adapter are shown in three aspects, transmission speed, CPU utilization and reliability.

Transmission Speed

Commonly, Ethernet card supports transmission speeds including 10M/s (out of the stage of the history), 100M/s, 10/100M/s self-adoption, 1000M/s, 10G/s or even higher speed. A network server usually needs to support several or even hundreds of Ethernet switches or computers. It is responsible for all incoming and outgoing data between the internet and clients, dealing with large data traffic. So it requires the server adapter with higher speed like 10G, 25G, 40G or even 100G for data delivery. For ordinary PC use, 100M/s, 10/100M/s self-adoption and 1000M/s network adapters are enough.

CPU Utilization

As mentioned above, network server needs to handle large amounts of data. For example, a website receives hundreds or thousands of access requests from people over the world, and the server has to response those request at the same time. If not, the server may be paralyzed and may result in big loss for service providers. So it’s very important for server adapter to has low CPU utilization. Server adapter card is designed with a special network control chip which can take over many tasks from CPU, reducing the working burden of CPU and ensuring the server’s performance won’t be affected. On the other hand, for desktop adapter, it doesn’t have any requirements in CPU utilization since one computer doesn’t need to manage the mass of data as the server does.


An accidental shutdown of a server may result in huge loss of business since the server deals with lots of data. To avoid it happens, the important components like network adapter, power supply of the server usually use redundancy designs. Thus server adapter features with NIC bonding, loading balancing, etc. And it may come in dual or quad port design. As a result, the server adapter’s reliability can be ensured which helps avoid server network paralysis caused by malfunction. But the most common computer adapter only has one port for delivering data.

Network Interface Card Price

The price of server and computer adapter varies greatly. Server adapter costs more than PC adapter, since the server adapter requires higher speed, lower CPU utilization and higher reliability. For example, a 10/100/1000Mbps Gigabit network adapter named 5722 from DELL only costs about 75 dollars. But Dell’s server card like 57416 type is much more expensive. It’s a 10G server network card with dual ports with a price of about 764 dollars.


Both server and computer adapter can provide connectivity between a server/computer and the internet. But the server adapter features with higher transmission data, lower CPU utilization and higher reliability, and it costs more than a computer adapter. Knowing their differences may help you purchase the correct device for your server or computer, and allows you to provide the best possible experience for your network.

25G Server Adapter Selection Guide

25G server adapter, also known as 25G NIC (network interface card), is usually a separate adapter card that can be plugged into one of the server’s motherboard expansion slots. Since the server adapter establishes a network node, it must have a MAC address. The MAC address is burned into the server adapter at the factory, so it cannot be changed. So far, if you’re interested in 25G server adapter, you may wonder why and how to choose a suitable 25G server adapter for your network, here is the recommendation for you.

alt25G Server Adapter Selection Guide

Why Is There a Need for a 25G Server Adapter?

Storage space needs faster speed, especially when it comes to flash arrays. 10G is not fast enough, and many customers are looking for 25G, 50G, or even 100G capabilities. Public cloud builders are also looking to increase bandwidth and reduce link aggregation from their servers. It’s better and cheaper to have a single low-power adapter that has two 25 Gb/sec ports than to have four 10 Gb/sec ports on multiple adapters. That’s why the industry is very concerned about 25G products. The cost per bit and power consumption per bit of 25G products are lower.

What Is the Function of a 25G Server Adapter?

The main function of the 25G server adapter is to convert server data into electrical signals then send to the Ethernet switches, and vice versa. 25G server adapter is a kind of fiber-optic server adapter, usually used for fiber-optic networks. In most networks, fiber-optic server adapters are still too expensive for desktop use. So, they’re usually used for high-speed backbones. If a server connects to a high-speed fiber backbone, it will need a fiber-optic server adapter that matches the fiber-optic cable being used.

alt25G Server Adapter Selection Guide

How to Select the Best 25G Server Adapter for Your Network?

Whether a 25G server adapter can be properly selected, connected, and set up during networking is often the prerequisite for proper network connectivity. Here we name some mainstream 25G server adapters that are available on the market for your reference.


As we see from the chart, those server adapters are almost the same. Most of them have a dual port SFP28, and just one of them has a single port SFP28. For users, it makes sense to have a dual port SFP28. In this case, the server adapter can handle more network traffic.

However, the most important factor lies in the interface PCIe. PCIe, shorts for Peripheral Component Interconnect Express, is a standard type of connection for internal devices in a computer. A PCIe based device physically slides into a PCIe slot on the motherboard. The PCIe interface allows high bandwidth communication between the device and the motherboard, as well as other hardware. And there are various versions of PCIe, for example PCIe 1.0, PCIe 2.0, PCIe 3.0, PCIe 4.0. Among them, PCIe 4.0 provides the fastest speed, supporting a bandwidth of 15.752 Gbit/s per lane (1969 MB/s). PCIe 3.0 is amazingly fast compared to PCIe 1.0 and PCIe 2.0, it can support a bandwidth of 7.877 Gbit/s per lane (984.625 MB/s). Since the server adapters mentioned above have the same version of PCIe, you can choose any one of them.

Selection Guide

Due to the limited number of 25G server adapters available on the market, when you are looking for one, keep in mind the matching products offered by the above companies. Generally, companies that provide more matching products are more reliable to your network. It can provide more options when expanding your network and prevent problems such as 25gbe switch and cables compatibility. If you are interested in FS 25G server adapter, feel free to contact us at FS.COM. We provide cost-effective 25G server adapters and a complete range of matching products just for your needs.

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