Dell G5 5090 vs. Dell Pro Max Slim FCS1250
Comparison and Differences
Differences between Dell G5 5090 and Dell Pro Max Slim FCS1250
If you are looking for a more modern desktop, then you should go with the Dell Pro Max Slim FCS1250 which was released in 2025. The Dell G5 5090 is older and entered production in 2019.
If you are looking for the smaller form factor the Dell Pro Max Slim FCS1250 is the right one for you. It is smaller than the Dell G5 5090 and will fit more easily under your desk.
Processor
Usually the newer the generation of the CPU, the better the performance and efficiency is. If your budget allows it, you should go with the Dell Pro Max Slim FCS1250 as it is running a newer generation CPU. This is not to say that Dell G5 5090 is bad - it can still run some powerful CPUs, albeit being an older generation.
Memory
Both models have have equal amount of ram slots (4 RAM). Usually two RAM slots are more than enough for most cases. However, the count should be taken into account when planning how much and what combination of RAM you are going to need for your system.
The Dell Pro Max Slim FCS1250 is using the faster 5600 MT/s RAM. The Dell G5 5090 is slower by supporting RAM speeds of up to 2666 MT/s. Additionally, if you will be needing a lot of RAM, better go for the Dell Pro Max Slim FCS1250 as it has the ability to run 128 GB of RAM. The Dell G5 5090 can do a bit less at max 64 GB. Most of the times, this should be sufficient for the majority of users.
Ports
In total the Dell Pro Max Slim FCS1250 has 10 USB ports. The Dell G5 5090 is inferior in this regard and packs 9 USB ports. In any case, if you miss USB ports, you can always purchase a USB hub. What is nice about the Dell G5 5090, is that it has 2 USB 3.1 port(s) which allows transfer of up to 10Gb/s. Unfortunately, the Dell Pro Max Slim FCS1250 has no such port, thus restricting your transfer speeds significantly. For people who want to use external drives on regular basis, this might be an issue.
Unfortunately, only the Dell Pro Max Slim FCS1250 has a DisplayPort. The Dell G5 5090 does not have one? Don't worry though, nowadays video adapters are cheap and you can get almost any combination of conversion types.
None of the models has an HDMI port. If your monitor supports only the HDMI interface, you will need to buy an adapter. Such adapters are cheap so nothing to worry about.
SATA ports are placed on the system board and it is where you connect your HDD, SSD and Optical Disk Drives. More SATA slots will allow you to have more drives running at the same time. In this regard the Dell G5 5090 is better equipped as it comes with 3 SATA slot(s), while the Dell Pro Max Slim FCS1250 has 2 slot(s).
An M.2 SSD can be several times faster than a SATA one. Thus, we are happy to see that both models support the M.2 interface. However, the Dell Pro Max Slim FCS1250 has 1 M.2 slots while the Dell G5 5090 comes with just 1.
Make sure that the available M.2 slot supports the PCIe (also called NVMe) interface. This is important as there are M.2 slots which support only the inferior SATA III interface. For comparison, the SATA III interface has max speeds of 6Gb/s, while the PCIe 3.0 x4 will support speeds up to 32Gb/s!
Power Supply
Having a Power Supply Unit with high power rating is important, if you are going to use components which require extra power. The Dell Pro Max Slim FCS1250 comes with a decent 360 Watt PSU, but the Dell G5 5090 has a more powerful one rated at 460 Watts. Choosing either one depends on your specific requirements and use case. Also don't forget that some models might have more than one PSU option - try to always get the most powerful one, especially if you plan to upgrade to a powerful GPU.
Motherboard
