Dell OptiPlex 7040M vs. Lenovo ThinkCentre Edge 72 Small

Comparison and Differences

Dell_OptiPlex_7040M.jpg case front and back pannelLenovo_ThinkCentre_Edge_72_Small.jpg case front and back pannel
ModelDell OptiPlex 7040MLenovo ThinkCentre Edge 72 Small
Form factorMicroDesktop
CPU optionsIntel Gen6 i3/i5/i7Intel Gen2&3 i3/i5/i7; Celeron; Pentium;
ChipsetQ170H61
Dedicated GPU *N.A.GeForce GT 1030 Low Profile
RAMSODIMM DDR4-2133DIMM DDR3-1600
RAM slots22
RAM speed2133 MT/s1600 MT/s
RAM max32 GB16 GB
USB ports(6x) USB-A 3.0(6x)USB-A 2.0;
Video ports Display Port 1.2; HDMI 1.4;DVI-D; VGA;
Other portsRJ45; Headset; Line-Out; RJ45; Hdph; (2x) Mic; Line-Out; Line-In;
Optional portsWiFi antenna; Display Port 1.2; VGA; Serial; Serial+PS2; Serial; Media card reader (USB 2.0);
SATA ports13
PCI slotsN.A.PCIe 2.0 x16; (2x) PCIe 2.0 x1;
M.2 slotsM.2 2280 M-key (PCIe 3.0 x4, SATA 3.0); M.2 2230 (WiFi/BT) N.A.
Drive bays2.5-inch2.5-inch; 2.5/3.5-inch; 5.25-inch;
PSU65 WTFX 180 W
Weight1.41 kg (3.12 lb)6.0 kg (13.2 lb)
Released20152012
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 7040M and Lenovo ThinkCentre Edge 72 Small

If a more modern desktop is what you are looking for, then you should go with the Dell OptiPlex 7040M which was released in 2015. The Lenovo ThinkCentre Edge 72 Small is older and entered production in 2012.

If you are looking for the smaller form factor the Dell OptiPlex 7040M is the right one for you. It is smaller than the Lenovo ThinkCentre Edge 72 Small 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 7040M as it is running a newer generation CPU. This is not to say that Lenovo ThinkCentre Edge 72 Small 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 2 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 7040M is using the faster 2133 MT/s RAM. The Lenovo ThinkCentre Edge 72 Small 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 7040M as it has the ability to run 32 GB of RAM. The Lenovo ThinkCentre Edge 72 Small can do a bit less at max 16 GB. Most of the times, this should be sufficient for most users.

Ports

Total count of USB ports for both computers is 6. 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.

Unfortunately, only the Dell OptiPlex 7040M has a DisplayPort. The Lenovo ThinkCentre Edge 72 Small does not have one? Don't worry though, nowadays video adapters are cheap and you can get almost any combination of mode conversion.

The Dell OptiPlex 7040M comes with an HDMI port, while the Lenovo ThinkCentre Edge 72 Small 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 Edge 72 Small is better equipped as it comes with 3 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 7040M. Sadly, the Lenovo ThinkCentre Edge 72 Small 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 7040M comes with a decent 65 Watt PSU, but the Lenovo ThinkCentre Edge 72 Small has a more powerful one rated at 180 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_7040M_motherboard.jpg motherboard layoutLenovo_ThinkCentre_Edge_72_Small_motherboard.jpg motherboard layout

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