Dell Pro Slim Plus QBS1250 vs. Dell Pro Tower Plus QBT1250

Comparison and Differences

Dell_Pro_Slim_Plus_QBS1250.jpg case front and back pannelDell_Pro_Tower_Plus_QBT1250.jpg case front and back pannel
Model
Form factorSmallMini Tower
CPU optionsIntel Core Ultra 5/7/9Intel Core Ultra 5/7/9
ChipsetQ870Q870
Dedicated GPU *AMD Radeon RX 7400NVIDIA GeForce RTX 5060
RAMDIMM DDR5-5600UDIMM DDR5-5600
RAM slots44
RAM speed5600 MT/s5600 MT/s
RAM max128 GB128 GB
USB ports(4x) USB-A 2.0; (3x) USB-A 3.2 Gen 1; (1x) USB-A 3.2 Gen 2; (1x) USB-C 3.2 Gen 2; (1x) USB-C 3.2 Gen 2x2;(4x) USB-A 2.0; (3x) USB-A 3.0; (1x) USB-A 3.1; (1x) USB-C 3.1; (1x) USB-C 3.2;
Video ports(3x) DisplayPort 1.4a;(3x) DisplayPort 1.4a;
Other portsRJ45 (1 Gbps); Global headset jack; SD-card reader; Serial (optional);RJ45 (1Gbps); Audio; SD-Card 4.0 (optional);
Optional portsRJ45 (5Gbps)/Fiber/USB-A/USB-C/Thunderbolt 4/HDMI 2.1/VGA/DisplayPort 2.1RJ45 (5Gbps) / Fiber Optic / 2x USB-A 3.2 / USB-C 3.2 DP / Thunderbolt 4 / HDMI 2.1 / VGA / DisplayPort 2.1
SATA ports22
PCI slotsPCIe 4.0 x16 (half-height); PCIe 3.0 x4 (half-height); PCIe 3.0 x1 (half-height);PCIe 4.0 x16; PCIe 4.0 x1; PCIe 4.0 x4 open-end; PCIe 4.0 x4 (optional);
M.2 slots(2x) M.2 2230/2280 (PCIe 4.0 x4, NVMe); (1x) M.2 2230 (PCIe 4.0 x4, NVMe); M.2 2230 (WiFi/BT)(1x) M.2 2230 (PCIe 4.0 x4, NVMe); (2x) M.2 2230/2280 (PCIe 4.0 x4, NVMe); M.2 2230 (WiFi/BT)
Drive bays3.5in; 5.25in (slim);3.5in; 5.25in (slim);
PSU260/360 W260/360 W
Weight6.58 kg (14.51 lb)7.17 kg (15.81 lb)
Released20252025
Manuallinklink
Price**Check PriceCheck Price

** As an Amazon associate we earn from qualifying purchases.
* Dedicated GPU warning: Check if your particular power supply model has enough power. Additionally some PSUs don't come with an auxiliary PCIe power connector and you may need to buy a SATA to PCIe power adapter.

Differences between Dell Pro Slim Plus QBS1250 and Dell Pro Tower Plus QBT1250

Both computers, the Dell Pro Slim Plus QBS1250 and the Dell Pro Tower Plus QBT1250, were released during the same year - 2025.

If you are looking for the smaller form factor the Dell Pro Slim Plus QBS1250 is the right one for you. It is smaller than the Dell Pro Tower Plus QBT1250 and will fit more easily under your desk.

Processor

The two models have the same generation of Intel processors. We think that the 16 generation of Intel Processors have enough power to execute all of the home and office tasks that most people will care to do.

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.

None of the desktops has an advantage when it comes to the speed of the RAM being used. Both models support RAM speeds of up to 5600. In addition, you will be able to install the same amount of RAM in both models, and most probably 128 GB of RAM will be enough for most people. However, if you will be needing more RAM, make sure to check other desktop models too.

Ports

Both models have the same amount of USB ports for total count of 10. If this is not enough, using a USB hub is always a viable option. Both of the models have USB 3.1 ports which will allow you to exchange data with your peripherals at up to 10Gb/s. This is especially crucial if you are using external drives on a regular basis.

The DisplayPort is usually the more popular video port used with desktops and laptops, while the HDMI is used predominantly in consumer electronics. That's why, it is good to see that both of the models come with a DisplayPort.

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 slots are located on the motherboard and it is where SSD, HDD and Optical Disk Drives are connected. Each of the two models being compared have 2 SATA slot(s). Keep in mind that having too few SATA slots might limit your options for connecting additional memory drives.

When your goal is to have the fastest SSD transfer speeds, an M.2 interface is crucial. Thus, it is good that both models have M.2 SSD slots. Today M.2 SSDs are not much more expensive than the average SATA drives, so it really does not make sense to invest in SATA drives anymore.

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

Looking at the Power Supply Unit (PSU) of the two models we don't see any differences. For either of them you get a maximum power of 360 Watts. However be careful, many models have more than one power supply option. When buying your computer, it is a good idea to get a version with the most powerful PSU. This will potentially allow you to upgrade to a more powerful GPU for example.

Motherboard

Dell_Pro_Slim_Plus_QBS1250_motherboard.jpg motherboard layoutDell_Pro_Tower_Plus_QBT1250_motherboard.jpg motherboard layout