This product review originally appeared on CADdigest: 
http://www.caddigest.com/exclusive/cad_hardware/110314_lenovo_thinkstation_p300_review_perry.htm
While I have used Lenovo workstations a few times in the past, unfortunately the only thing our campus' IT department ever granted me was the power to specify a graphics card. (At that, it took years of convincing to gain that concession for the Engineering department’s equipment.) While the computers we were provided with always performed reliably, I was pretty excited at the opportunity to review a proper workstation, and not just a stock office machine with a better graphics card. 
In my case, the workstation was the ThinkStation P300 tower workstation from Lenovo (see figure 1). The company changed its naming scheme this year; no more C and S and D models: just P for performance. The number, such as 300, indicates the performance level, kind of like BMW's model numbering does. And so the P300 is their lower-end workstation. Just by being a workstation, however, it already is more powerful than most regular desktops.
| Figure 
   1: The P300 tower workstation from Lenovo |  | 
I have to compliment Lenovo on its packaging. The machine was easy to 
 unbox, and it was simple to conserve the foam inserts and other materials 
 for reuse when I send it back following my review, or if I had to have it 
 transported across the campus to a user. (Some packing materials from 
 other companies open up okay, but then trying to fit them back in as they 
 came? Not quite so simple.) Everything arrived in good condition and 
 functioned immediately upon startup. I have had workstations in the past 
 that sounded like jet engines revving for takeoff, so it was a relief when 
 firing up this powerful machine that it hummed along quietly.
 The tower measures just under 7"x17"x17". In the box came the power 
 cable, USB mouse, USB keyboard, setup guide (which includes safety and 
 warranty information), and Windows Recovery Media discs. It is rare today to 
 have recovery disks included; usually, we need to make our own after 
 starting up the computer for the first time.
Specifications
The ThinkStation P300 sent to me for testing was set up as follows: 
 
  CPU: 3.60GHz 4-core 8-thread Intel Xeon E3-1276v3 
  RAM: 8GB (Samsung 1600Mhz)
  Graphics Card: NVIDIA Quadro K4000 (PCIe and SSE2)
  Drives: 1TB hard drive
  Power Supply: 450W
 
In addition to the specs you see listed here, there are multiple 
options 
 available from Lenovo for individual configurations, from operating 
system 
 to processors, and the tower has space to insert additional storage 
devices 
 inside. Of the customization options, the most popular ones are likely 
to be 
 monitors (choice of 22", 24" or 30" LED), hard drives (500GB, 1TB, or 
2TB SATA HDD), and sets of memory (2GB, 4GB, or 8GB). The motherboard 
has four 
 slots available for memory.
 Regarding the power supply, 
if a significant hardware component upgrade 
 will be in your future, you 
might find 450 watts to be lacking. Higher 
 capacity power supplies are required to run newer, more energy hungry 
 elements, such as very high end graphics boards. Granted, this is otherwise 
 a good system, and for most users 450W will not be a limitation at all.
 The P300 arrived with Windows 7 installed and with Windows 8 provided on 
 a disc. While I really would have liked to have tried a touchscreen monitor 
 with Windows 8, I ultimately decided to use the out-of-the-box setup, 
 because I wanted the Lenovo configuration to match as closely as possible 
 the machine to which I am comparing it.
 For those who are looking for Autodesk approved workstations or graphics 
 cards, be sure to check
 
 www.autodesk.com/graphics-hardware, which is the only justification my 
 IT department would accept for springing for "nonstandard" (to them, anyhow) 
 components. Autodesk has not yet completed evaluations for its 2015 line of 
 software, and so the computer I am reviewing shows up as approved hardware 
 for vanilla AutoCAD 2015, but not yet for the Design Suite. (The older ThinkStation E32 
 is supported for both.) The graphics card in the P300 is certified for 
 AutoCAD, so no worries there.
The Workstation
My first, and only, disappointment came when I instinctively attempted to 
 hook the tower up to my high-def television, using an HDMI cable which I 
 keep handy for this purpose. Perhaps I have been a laptop worker at home for 
 too long, because the lack of an HDMI port on the Lenovo box startled me. 
 Instead, it has VGA and two DisplayPort ports. (There are two more 
 DisplayPorts ports on the motherboard, as well as a punch out for an HDMI 
 port, if you order it.)
 To solve this, I had to go out and overpay for a DVI cable from a big box 
 store, no matter how that made me shudder. The cable allowed me to attach the computer to a monitor I borrowed. Once I 
 did get everything hooked up, I had no complaints at all about the picture; 
 DisplayPort does a better job than HDMI, because it handles higher 
 resolutions as well as more monitors than HDMI.
 I considered critiquing the fact that one quarter of the USB ports are located at the 
 rear of the machine. This is an issue, because most cube farms on my campus 
 store the towers under the desk in order to maximize the work surface. But then I realized 
 that most users who are aware only of the front-facing ports, would not be 
 the type of user provided with a workstation like this, anyway.
At any rate, there are 
 two USB 3.0 ports on the front, four USB 3.0 and two USB 2.0 ports on the 
 rear (see figure 2). Audio inputs and outputs are available both front and 
 back.
| Figure 
   2: The back panel of the Lenovo tower | 
To get inside the case is very simple. There are two screws at the back 
 of the left panel, large enough for most people to turn by hand. Once 
 loosened and removed, the side of the panel slides opens at the push of the release button, to allow us easy 
 access. It was obvious that the components are placed to allow maximum 
 airflow (see figure 3).
| Figure 
   3: Inside the Lenovo P300 | 
Software OOTB
The preloaded software installed along with Windows 7 operating system 
 consists of Adobe Acrobat Reader, CyberLink Power DVD, Cyberlink Create, 
 Microsoft Office 2013 (trial only), Norton Internet Security 2014 (trial 
 only), Skype, ThinkVantage System Update, Rescue and Recovery (ready to 
 install), Lenovo Reach (only for those machines purchased in the US or 
 Canada), Lenovo Solution Center, and PC Device Experience.
 As I said, everything appeared to fire up just fine. Though, just to be on the safe side, I 
 did start out by running the Lenovo Solution Center, because this software 
 scans the hardware for problems. It took five minutes to complete this scan 
 and all of the components checked out just fine.
In order to best emulate my experience, I installed the Autodesk Design Suite Premium 2014, with all software packages selected (including the programming tutorials, but, only the Imperial template files for each). It took me five minutes to walk through the installation configuration, and then another 44 minutes to 
 install the 61 components.
I couldn't resist checking the boot time with all 
 this Autodesk software in place. The computer's startup time increased from 
 24 seconds to 68 seconds.
The Numbers
I decided to compare this new workstation with my daily-use desktop 
 computer, a Dell OptiPlex 790 that also run 64-bit Windows 7, but with 4GB 
 RAM instead of the 8GB the Lenovo possesses. Both have AutoCAD 2014 
 installed with the same options. It is not an apples to apples comparison, 
 but I wanted a starting point from which to provide some perspective.
 The fastest way to compare systems is through the Windows Experience 
 Index. When looking at WEI, it is important to keep in mind that the given 
 number reflects the lowest scoring category, so be sure to click for more 
 details. The scale runs from 1.0 to 7.9.
 
  
   | Workstation | WEI | 
   | Dell | 5.4 (see table 1) | 
   | Lenovo | 5.9 (see table 2) | 
 
  | 
Table 
  1: Windows Experience Index for Dell Optiplex 790 
 | 
  | 
  Component    | 
  Details    | 
  Subscore | 
  | 
Processor    | 
  Calculations Per Second    | 
  7.4 | 
  | 
Memory (RAM)    | 
  Memory Operations Per Second    | 
  7.2 | 
  | 
Graphics | 
  Desktop Performance for Windows Aero    | 
  5.4 | 
  | 
Gaming graphics    | 
  3D Business and Gaming Graphics Performance    | 
  6.7 | 
  | 
Primary hard disk    | 
  Disk Data Transfer Rate    | 
  5.9 | 
 
  
   | 
Table 
   2: Windows Experience Index for Lenovo P300 | 
   | Component | Details | Subscore | 
   | Processor | Calculations Per Second | 7.8 | 
   | Memory (RAM) | Memory Operations Per Second | 7.8 | 
   | Graphics | Desktop Performance for Windows Aero | 7.6 | 
   | Gaming graphics | 3D 
   Business and Gaming Graphics Performance | 7.6 | 
   | Primary hard disk | Disk Data Transfer Rate | 5.9 | 
The Lenovo clearly performs better, scoring near top marks every 
 category, save for the disk data transfer rate. That is the same for both 
 computers. In workstations these days, I do prefer to see solid state 
 drives, even in mid to high range laptops. (If not a full SSD, then at least 
 a hybrid drive, where a small-capacity SSD speeds up the operating system to 
 improve startup performance, and then a standard "spinning" hard drive for 
 the remainder of my storage needs.) Unfortunately, cost is usually a consideration, and 
 some options translate into much higher price tags, so you'll have to balance your priorities against your budget.
 As far as I know, Revit does not have any internal testing capabilities, so I was unable to test it. If you want to try a Revit benchmark yourself, there is one available for download on 
RevitForum. 
AutoCAD, however, does have some internal testing capability.There is an undocumented application which accompanies the AutoCAD family 
 of products, called 
GsTest.arx. Use the 
AppLoad command to load it, 
 and then type 
GsTestBenchmark. It only takes a moment to run,
 then displays the results in the Command Line interface.
When compared to my desktop, 
 the numbers speak for themselves. Lower milliseconds and higher 
 frames-per-second indicate better results. The Lenovo won every benchmark, 
 running about 7x faster than my machine.
 
  | Benchmark | Dell Optiplex 790 | Lenovo P300 | 
  | 3D Wireframe | 919 milliseconds | 125 ms | 
  | 
198 frames per second    | 
1,460 fps | 
  | 
Hidden Line Removal | 
934 ms    | 
126 ms | 
  | 
195 fps    | 
1,447 fps | 
  | 
Flat Shading | 
818 ms    | 
125 ms | 
  | 
223 fps    | 
1,462 fps | 
  | 
Gouraud Shading | 
859 ms    | 
116 ms | 
  | 
212 fps    | 
1,575 fps | 
For those folks in the audience who perform renderings and want some more 
 assurance on the Lenovo's performance I also ran Maxon's Cinebench Version 
 15.0 benchmark.
 
  
   | Workstation | CPU Score | OpenGL (FPS) | 
   | Dell Optiplex 790 | 439 | 28.77 | 
   | Lenovo P300 | 769 | 119.24 | 
Again, the Lenovo clearly outperforms my daily machine.
Summary While the lack of an HDMI port made me sad initially, and I would have preferred to see 16GB RAM and an SSD as the baseline for a workstation out of the gate, the solid configuration and ease of use make this sturdy machine quite suitable for the kinds of daily engineering tasks I would undertake with AutoCAD MEP and Revit MEP.
I like a tower that is easy to work with, is quiet, expandable and has accessible ports. The improvements I experienced and benchmarked over my existing workstation earn the ThinkStation P300 an endorsement from me. 
Additional Information   http://shop.lenovo.com/us/en/workstations/thinkstation/p-series/  
About the Author
Melanie Perry is a freelance Technical Editor and an
Archibus System Administrator for the Facilities group of a financial services
firm. She also blogs about AutoCAD with Facility Management and conducts the
Annual Salary Survey for 
AUGIWorld Magazine. She can be contacted via 
mistressofthedorkness@gmail.com
or found on Twitter as @MistresDorkness