Alienware X51 R2 vs. Dell Vostro 5090

Comparison and Differences

Alienware_X51_R2.jpg case front and back pannelDell_Vostro_5090.jpg case front and back pannel
Model
Form factorSmall GamingMini Tower
CPU optionsIntel Gen4 i3/i5/i7;Intel Gen9 i3/i5/i7/i9; Pentium; Celeron;
ChipsetH87B360
Dedicated GPU *GeForce GTX 1650 SuperGeForce RTX 2070 Super
RAMDIMM DDR3-1600 DIMM DDR4-2666
RAM slots22
RAM speed1600 MT/s2666 MT/s
RAM max16 GB32 GB
USB ports(6x) USB 3.0 Type A; (2x) USB-A 2.0; (4x)USB-A 2.0; (3x)USB-A 3.0; USB 3.0 Type C;
Video portsHDMI 1.4b;HDMI 1.4; DisplayPort 1.4;
Other portsRJ45; Headset; Line-Out; Line-In; S/PDFI optical/analog;RJ45; Hdph; Line-Out; Line-In;
Optional portsN.A.SD card reader
SATA ports34
PCI slotsPCIe 3.0 x16;PCIe 3.0 x16; (2x) PCIe 3.0 x1; PCI
M.2 slotsN.A.M.2 2230/2280 (PCIe 3.0 x4, NVMe); M.2 2230 (WiFi/BT);
Drive bays(2x) 2.5in; 3.25in; 5.25in;3.5in;
PSU240/330 W260/460W
Weight5.49 kgs (12.10 lbs)7.90 kg (17.42 lbs)
Released20132019
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 Alienware X51 R2 and Dell Vostro 5090

If you are looking for a more modern desktop, then you should go with the Dell Vostro 5090 which was released in 2019. The Alienware X51 R2 is older and entered production in 2013.

If you are looking for the smaller form factor the Alienware X51 R2 is the right one for you. It is smaller than the Dell Vostro 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 Vostro 5090 as it is running a newer generation CPU. This is not to say that Alienware X51 R2 is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

Both models have have equal amount of ram slots (2 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 Vostro 5090 is using the faster 2666 MT/s RAM. The Alienware X51 R2 is slower by supporting RAM speeds of up to 1600 MT/s. Additionally, if you will be needing a lot of RAM, better go for the Dell Vostro 5090 as it has the ability to run 32 GB of RAM. The Alienware X51 R2 can do a bit less at max 16 GB. Most of the times, this should be sufficient for the majority of users.

Ports

In total the Dell Vostro 5090 has 9 USB ports. The Alienware X51 R2 is inferior in this regard and packs 8 USB ports. In any case, if you miss USB ports, you can always purchase a USB hub. None of the desktop models has a USB 3.1 port (10Gb/s), so if you need a fast connection to your peripherals, like external Solid State Drive, you will need to look elsewhere.

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.

The Dell Vostro 5090 comes with an HDMI port, while the Alienware X51 R2 does not support the interface. Of course missing HDMI port is something that can be easily fixed with a good adapter (e.g. DisplayPort to HDMI).

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 Vostro 5090 is better equipped as it comes with 4 SATA slot(s), while the Alienware X51 R2 has 3 slot(s).

If you want the fastest transfer speeds for your SSD, an M.2 interface is crucial. Thus, if the M.2 SSD slot is a mandatory requirement for you, go with the Dell Vostro 5090. Sadly, the Alienware X51 R2 has no such slot, and you will be forced to use the SATA interface instead.

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 Alienware X51 R2 comes with a decent 330 Watt PSU, but the Dell Vostro 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

Alienware_X51_R2_motherboard.jpg motherboard layoutDell_Vostro_5090_motherboard.jpg motherboard layout