Dell OptiPlex 7040 SFF vs. Lenovo ThinkCentre M83 Small Pro

Comparison and Differences

Dell_OptiPlex_7040_SFF.jpg case front and back pannelLenovo_ThinkCentre_M83_Small_Pro.jpg case front and back pannel
ModelDell OptiPlex 7040 SFFLenovo ThinkCentre M83 Small Pro
Form factorSmallDesktop
CPU optionsIntel Gen6 i3/i5/i7Intel Gen4 i3/i5/i7; Pentium;
ChipsetQ170Q85
Dedicated GPU *GeForce GT 1030 Low ProfileGeForce GTX 1660 Super
RAMDIMM DDR4-2133 DIMM DDR3-1600
RAM slots44
RAM speed2133 MT/s1600 MT/s
RAM max64 GB32 GB
USB ports(6x) USB-A 3.0; (4x) USB-A 2.0; (4x)USB-A 3.0; (4x)USB-A 2.0;
Video ports(2x) Display Port 1.2; HDMI 1.4;(2x) DisplayPort; VGA;
Other portsSerial; (2x) PS2; RJ45; Headset; Line-Out; RJ45; Hdph; (2x) Mic; Line-Out; Line-In; Serial;
Optional portsVGA; Media Card Reader;Parallel; Serial; (2x) PS2; Media card reader (USB 2.0);
SATA ports34
PCI slotsPCIe 3.0 x16; PCIe 3.0 x4;PCIe 3.0 x16; PCIe 2.0 x1; PCIe 2.0 x16 (wired x4);
M.2 slotsM.2 2280 M-key (PCIe 3.0 x4, SATA 3.0) N.A.
Drive bays3.5-inch/(2x)2.5-inch; 5.25-inch (slim); (2x) 2.5/3.5-inch; (2x) 5.25-inch;
PSU180 WATX 280/450 W
Weight6.00 kg (13.22 lb)11.20 kg (24.69 lb)
Released20152013
Manuallinklink
* 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 OptiPlex 7040 SFF and Lenovo ThinkCentre M83 Small Pro

If a more modern desktop is what you are looking for, then you should go with the Dell OptiPlex 7040 SFF which was released in 2015. The Lenovo ThinkCentre M83 Small Pro is older and entered production in 2013.

If you are looking for the smaller form factor the Dell OptiPlex 7040 SFF is the right one for you. It is smaller than the Lenovo ThinkCentre M83 Small Pro 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 OptiPlex 7040 SFF as it is running a newer generation CPU. This is not to say that Lenovo ThinkCentre M83 Small Pro is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

RAM slots is where your insert your RAM sticks. Each of those two models has 4 RAM slot(s) which should be taken into account when planning how much and what combination of RAM you are going to need.

The Dell OptiPlex 7040 SFF is using the faster 2133 MT/s RAM. The Lenovo ThinkCentre M83 Small Pro is slower by supporting RAM speeds of only up to 1600 MT/s. Additionally, if you will be needing a lot of RAM, better go for the Dell OptiPlex 7040 SFF as it has the ability to run 64 GB of RAM. The Lenovo ThinkCentre M83 Small Pro can do a bit less at max 32 GB. Most of the times, this should be sufficient for most users.

Ports

In total the Dell OptiPlex 7040 SFF has 10 USB ports. The Lenovo ThinkCentre M83 Small Pro is inferior in this regard and packs 8 USB ports. None of the desktop models has a USB 3.1 port (10Gb/s), so if you need a fast connection to your peripherals you will need to look at other models.

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

The Dell OptiPlex 7040 SFF comes with an HDMI port, while the Lenovo ThinkCentre M83 Small Pro 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 port 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 Lenovo ThinkCentre M83 Small Pro is better equipped as it comes with 4 SATA 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 OptiPlex 7040 SFF. Sadly, the Lenovo ThinkCentre M83 Small Pro has no such slot, and you will be forced to use the SATA interface instead.

Remark: Make sure that the M.2 slot supports the PCIe (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 6 Gb/s, while the PCIe 3.0 x4 will support speeds up to 32 Gb/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 OptiPlex 7040 SFF comes with a decent 180 Watt PSU, but the Lenovo ThinkCentre M83 Small Pro has a more powerful one rated at 450 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.

Motherboard

Dell_OptiPlex_7040_SFF_motherboard.jpg motherboard layoutLenovo_ThinkCentre_M83_Small_Pro_motherboard.jpg motherboard layout

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