Z390 vs x299 – are these older intel mb chipsets worth it?

As an essential computer part, a motherboard has many different features you must pay attention to. Since there are a lot of motherboards on the market, it can be difficult to choose one. Tech specs don’t make the choice easier, especially if you are not tech-savvy. In this article, we can help you by comparing two great Intel chipsets — Z390 vs X299. 

Z390 vs X299 – Quick Comparison

Intel chipsets are categorized into chipset series. Chipsets in each series usually offer specific features — they either support the same technologies or are compatible with certain computer components. 

Intel Chipset
Intel Chipset

That said, we must emphasize that the two chipsets in our comparison belong to different series. The Z390 belongs to Intel 300 Series, and the X299 belongs to the Intel 200 Series of Desktop Chipsets. What this also implies is that they were not launched at the same time. 

X299 was launched in 2017, and Z390 was launched in 2018. Since technology improves each year, naturally, these two chipsets have some differences. So, let’s dive deeper into this comparison. 

Intel Z390

Intel Z390


  • Supports USB 3.2 Gen 2 
  • Includes a vast range of supported CPUs
  • Overclocking support
  • Variety of form factors


  • No USB 3.2 2×2 support
  • No support for PCI-e 4.0 or DDR5

Intel X299



  • Supports both SLI and Crossfire
  • Maximum RAM capacity of 256 GB
  • Up to 8 memory slots
  • Up to 8 SATA 6 Gb/s slots


  • Only up to 5 Gb/s data transfer speeds
  • Doesn’t support PCI-e 4.0 or DDR5

Socket and CPU Compatibility

Socket Type Supported

Why should you pay attention to which socket type a motherboard supports? Well, this will let you know whether you can connect it to your CPU or not. CPUs and motherboards have to be compatible because they support the same socket type. 

If two chipsets belong to two different series of chipsets, they will most likely support different socket types. This is the case with chipsets in our comparison. The Z390 chipset supports the LGA1151 socket (or Socket H4).

LGA 1151 Socket
LGA1151 Socket

As an older chipset, the X299 supports a different socket type — LGA 2066

LGA2066 Socket
LGA2066 Socket

This basically means that these two chipsets don’t support the same type of processors. Let’s learn more about that in the next segment. 

CPU Support / Compatibility

So, since they don’t support the same socket type, these chipsets are compatible with different types of processors. Let’s compare them in the table below. 

Z390 Compatible ProcessorsX299 Compatible Processors
9th Generation Intel Core i9 ProcessorsIntel Core X-series Processors
9th Generation Intel Core i7 Processors
8th Generation Intel Core i7 Processors
9th Generation Intel Core i5 Processors
8th Generation Intel Core i5 Processors
9th Generation Intel Core i3 Processors
8th Generation Intel Core i3 Processors
Intel Pentium Gold Processor Series
Intel Celeron Processor G Series

As you can see, the Z390 chipset supports the 8th and 9th generation of Intel Core processors, as well as the Intel Celeron G Series processors. X299, on the other hand, only supports Intel Core X-series Processors. 

Form Factor

Unfortunately, motherboards don’t come in one standardized size or design. They come in a variety of sizes, shapes, and designs. The most common motherboard form factors are: 

  1. Mini ITX
  2. Micro ATX
  3. ATX
  4. EATX

Mini ITX is the smallest, whereas EATX is the largest. But why exactly is form factor important? First of all, its size and shape determine the computer case it can fit in. 

Secondly, they consume power differently. Smaller form factors require less power, whereas larger form factors need more power and a better ventilation system. Also, larger form factors usually support multiple GPU use and overclocking. 

Lastly, they offer different numbers of PCI-e and RAM slots, with larger motherboards usually having more. 

In our Z390 vs X299 comparison, both chipsets offer a variety of form factors. But X299 motherboards typically come in the larger ATX or EATX form factors. 

GPU Compatibility

SLI / Crossfire Compatibility

Nvidia’s SLI or AMD’s Crossfire technology basically means multiple GPUs used on the same motherboard. If a motherboard supports either of these two technologies, you can connect up to four GPUs to it. 

However, as good as it sounds, opting for these technologies can result in some negative effects. Two main disadvantages are increased power consumption and increased risk of overheating. So, take these facts into account when considering SLI or Crossfire use. 

In our comparison, both chipsets usually support either of these technologies and often both of them. For example, EVGA X299 DARK supports both Crossfire and SLI (it’s 2-Way, 3-Way, and 4-Way capable). 

Since these two chipsets are a couple of years old, they also support older CPUs and GPUs. Therefore, SLI or Crossfire support can significantly improve their performance compared to newer GPUs. More recent GPUs already have enhanced features and provide high performance independently without the need for multiple GPU use. 



Overclocking is pushing your computer components over the limits set by their manufacturers. When the computer components’ specs have the speed measured in hertz, megahertz, or gigahertz, those are their clock speeds.

Basically, you can make any of those components work faster, over their set limit, by using the overclocking process. The most commonly overclocked components are processors, graphics cards, and memories. But you can overclock other components, such as monitors, and increase refresh rates. 

Enhancing a computer component for free sounds great. But are there any downsides? Yes. Overclocked components use more power, so be prepared for increased power consumption. They also generate more heat, so the risk of overheating is significantly increased, especially if you don’t have a good ventilation system.

But, most importantly, you could permanently damage your components if you don’t perform overclocking the right way. Also, bear in mind that the manufacturer’s warranty doesn’t cover damage caused by overclocking. 

Note that both Z390 and X299 support overclocking, which is a great feature. Especially if we take into account that these motherboards are not that recent. So, you can squeeze out better performance from your computer in order to play newer video games or use resource-hungry apps. 

Data Transfer Speed

There are a lot of different USB variations when it comes to data transfer speeds. Usually, chipsets support a wide range of USB speeds – from 480 Mb/s on USB 2.0 all the way up to 20 Gb/s on USB Gen 3.2 2×2 ports. 

USB Specifications
USB Speeds Chart

Let’s see how chipsets in our comparison stand in this segment. 

Chipset2.03.03.2 Gen 13.2 Gen 2Total number of USB ports
Z39014 portsN/A10 ports6 ports14 ports
X29914 ports10 ports14 ports

The total number of USB ports and the number of USB 2.0 ports is the same when it comes to both chipsets. However, X299 supports up to 10 USB 3.0 ports, with speeds of up to 5 Gb/s. 

7 usb 3.0
USB 3.0

But, Z390 excels in this category since it supports newer USB 3.1 Gen 1 and USB 3.1 Gen 2. That means that Z390 can achieve USB speeds of up to 10 Gb/s

Memory Speed / Compatibility

These chipsets support DDR4 RAM memory, but they support different speeds. Z390 supports speeds of up to 2666 MHz, whereas X299 supports speeds of up to 2667 MHz

However, in reality, motherboard manufacturers usually go over these numbers. So, it is no surprise to find one of these motherboards that support speeds over 4000 MHz. 

But, the aspect in which these chipsets differentiate is the maximum capacity of memory and number of memory slots. Z390 usually comes with four memory slots and a maximum capacity of 128 GB

X299 excels in this category and often offers a capacity of up to 256 GB and 8 memory slots. 

Other Features

Wi-Fi Compatibility

Z390 has an integrated Intel wireless 802.11ac solution. A lot of Z390 and X299 motherboards support Wi-Fi, and they usually support Wi-Fi 5. 

However, you need to check this info for each motherboard you intend to buy. In general, you have a 50/50 chance of encountering Z390 or X299 motherboard with an integrated Wi-Fi solution. So, it is better to make sure if this feature is important to you. 

Connectivity Options

As we mentioned earlier, X299 supports USB speeds of up to 5 Gb/s, whereas Z390 supports up to 10 Gb/s. They have the same total number of USB ports. But let’s see how they compare when it comes to other connectivity options. 

Connectivity OptionsZ390X299
Number of USB ports1414
Transfer SpeedUp to 10 Gb/sUp to 5 Gb/s
SATA 6.0 Gb/s Ports68
PCI Express Lanes2424
Ethernet YesYes

Besides the fact that they both support Ethernet, they also have the same number of PCI express lanes. They also both support PCIe 3.0 generation. 

But they differ when it comes to the number of SATA ports. Z390 supports up to six SATA ports, and X299 supports up to eight SATA 6 Gb/s ports


When you add new hardware to your computer, it usually requires a BIOS update in order to run. However, BIOS update is also required for other reasons, such as bug fixes or security patches. 

Intel has recommended that you update your BIOS if you plan to boot the 9th generation of Intel Core processors. 


Even though both of these chipsets have some advanced features, we can’t call them future-proof. They support only PCIe 3.0, whereas today’s minimum would be PCIe 4.0. They don’t support more recent CPU generations nor DDR5 memory. And neither of them offers USB Gen 3.2 2×2 ports. 

If you want to opt for more future-proof chipsets, why don’t you check out Intel 600 series, such as the B660 or H670 or the H670 or Z690

Asus PRIME Z390-A

Asus PRIME Z390-A is an ATX motherboard that supports 128 GB DDR4 RAM via four memory slots. It has three PCIe x16 slots and supports both SLI and Crossfire. It has four USB 3.1 Gen 2 ports and six SATA ports

Asus PRIME Z390-A
Asus PRIME Z390-A

Asus ROG Strix X299-E Gaming II

Asus ROG Strix X299-E Gaming II is a great ATX gaming motherboard. It supports 256 GB DDR4 RAM via eight memory slots. It also has three PCIe x16 slots and supports both SLI and  Crossfire. It comes with four USB 3.2 Gen 2 ports and six USB 3.2 Gen 1 ports. It also supports Wi-Fi 6 and Bluetooth 5.0

Asus ROG Strix X299-E Gaming II
Asus ROG Strix X299-E Gaming II


To conclude this Z390 vs X299 comparison, let’s see what their best features are. 

Z390 offers fantastic data transfer speeds of up to 10 Gb/s via USB 3.1 Gen 2. You can count on overclocking features with these motherboards. You can also choose from a variety of form factors and supported CPUs.

X299 supports up to eight SATA 6 Gb/s ports. You can count on great RAM capacities of up to 256 GB, and it has 8 memory slots. These motherboards are also great for multiple GPU use since they usually support both SLI and Crossfire technologies. 

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About Alex

Hello, I'm Alex and this is my website, Spacehop. I started the site as a way to talk about myself, and a few years later we're now a team of 6! I still work full time at a major PC retailer in the UK, and I'm a bit of a tech whizz (self-proclaimed, unfortunately!).

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