Lenovo ThinkCentre E73 Tower vs. Lenovo ThinkCentre M73 Small

Comparison and Differences

Lenovo_ThinkCentre_E73_Tower.jpg case front and back pannel

Lenovo_ThinkCentre_M73_Small.jpg case front and back pannel

Model
Form factor	Mini Tower	Small
CPU options	Intel Gen4 i3/i5/i7; Pentium;	Intel Gen4 i3/i5/i7; Celeron; Pentium;
Chipset	H81	H81
Dedicated GPU *	Radeon RX 550	GeForce GTX 1650 Low Profile
RAM	DIMM DDR3-1600	DIMM DDR3-1600
RAM slots	2	2
RAM speed	1600 MT/s	1600 MT/s
RAM max	16 GB	16 GB
USB ports	(2x)USB-A 3.0; (4x)USB-A 2.0;	(2x)USB-A 3.0; (4x)USB-A 2.0;
Video ports	DisplayPort; VGA;	DisplayPort; VGA;
Other ports	RJ45; Hdph; (2x) Mic; Line-Out; Line-In;	RJ45; Hdph; (2x) Mic; Line-Out; Line-In; Serial; (2x) PS2;
Optional ports	Serial; Media card reader (USB 2.0);	Parallel; Serial; Media card reader (USB 2.0);
SATA ports	3	3
PCI slots	PCIe 3.0 x16; (2x) PCIe 2.0 x1;	PCIe 3.0 x16; (2x) PCIe 2.0 x1;
M.2 slots	N.A.	N.A.
Drive bays	(2x) 2.5/3.5in; 5.25in;	2.5in; 3.5in; 5.25in;
PSU	ATX 180 W	TFX 240 W
Weight	7.5 kg (16.53 Ib)	6.6 kg (14.55 lb)
Released	2013	2013
Manual	link	link
Price**	Check Price	Check 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 Lenovo ThinkCentre E73 Tower and Lenovo ThinkCentre M73 Small

Both computers, the Lenovo ThinkCentre E73 Tower and the Lenovo ThinkCentre M73 Small, were released during the same year - 2013.

If you are looking for the smaller form factor the Lenovo ThinkCentre M73 Small is the right one for you. It is smaller than the Lenovo ThinkCentre E73 Tower and will fit more easily under your desk.

Processor

The two models have the same generation of Intel processors. We think that the 4 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 (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.

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 1600. In addition, you will be able to install the same amount of RAM in both models, and most probably 16 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 6. If this is not enough, using a USB hub is always a viable option. 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.

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 3 SATA slot(s). Keep in mind that having too few SATA slots might limit your options for connecting additional memory drives.

M.2 SSD interface allows you to transfer data with higher speeds compared to the old SATA interface. Unfortunately, neither the Lenovo ThinkCentre E73 Tower, nor the Lenovo ThinkCentre M73 Small has one. However, you can still use a SATA SSD drive which should give you satisfactory performance.

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 Lenovo ThinkCentre E73 Tower comes with a decent 180 Watt PSU, but the Lenovo ThinkCentre M73 Small has a more powerful one rated at 240 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.