Here at CADspeed, we get a lot of questions about buying new hardware for CAD applications. While the answer to, “What CAD hardware should I buy?” varies widely based on the person asking the question, it always starts in the same place: with the requirements of the CAD software you plan to use.
Yet a list of minimum requirements can be, well, only minimally helpful in the quest for the right CAD workstation. Most CAD users need hardware that will not just meet the minimum specifications, but enable them to maximize their productivity.
CAD software developers know this, and they have a vested interest in making sure you get the bang for your software buck. So this series will explore recommended hardware for a variety of common CAD applications from the makers of the applications themselves.
We start this series with Autodesk, creator of 3D design, engineering and entertainment software that includes some of the most commonly used applications in the industry. Autodesk has developed a web site to help users find certified or recommended software for Autodesk applications.
The truth is, however, many CAD users don’t use just one CAD software application. It’s very common to use both AutoCAD and Revit on the same system, for example. The intriguing part of the Autodesk hardware site is you can select multiple products and find the common driver and hardware configurations that will work best for your system.
Certified vs. Recommended
On the Autodesk website, you’ll see two terms that you need to understand: certified and recommended. “Certified” hardware meets Autodesk’s minimum hardware requirements for the applicable Autodesk software product. At least one configuration (e.g., GPU + driver, or CPU + GPU + RAM + HD + BIOS) has passed tests designed to verify that the hardware supports the product’s features.
“Recommended” hardware meets Autodesk’s recommended system requirements for the applicable Autodesk product. At least one configuration has passed tests designed to verify that the hardware supports the product’s features.
A “Recommended” or “Certified” rating is based on the test results for a graphics card and driver or a complete system. Clicking the link for a card or system will reveal the results of each individual component tests.
|Recommended – Meets Autodesk’s recommended system requirements and has passed all Autodesk certification tests.|
|Certified – Meets Autodesk’s minimum system requirements and has passed all Autodesk certification tests.|
|Icon||Component Test Results*|
|Passed – When tested with this configuration, the hardware passed testing.|
|Passed with issues – When tested with this configuration, the hardware has some minor problems or features that are not supported.|
|Failed – When tested with this configuration, the hardware does not adequately support the product’s features.|
|No Results – This configuration has not been tested by the associated product.|
* Test results are valid only for the tested combination of hardware and driver. Certified or Recommended status does not guarantee that the graphics hardware will operate acceptably with other drivers or configurations. Driver-specific test results are available for some hardware and can be found by clicking on a product name in the Hardware List.
Other Terms to Understand
Before using the Autodesk Certified Hardware site, you should understand a few other common terms to make sure you are getting the right results.
- Workstation—Graphics hardware designated by the manufacturer as workstation-grade, typically meaning it is designed to work with 3D CAD applications
- Consumer—Graphics hardware designated by the manufacturer for desktop or gaming level use, typically meaning it is not designed or recommended for use with 3D CAD applications
- Mobile—Integrated hardware normally found in laptops.
- Workstation Desktop—Desktop system designated by the manufacturer as workstation-grade, typically meaning it is designed to work with 3D CAD applications
- Workstation Laptop—Laptop designated by the manufacturer as workstation-grade, typically meaning it is designed to work with 3D CAD applications
- Consumer Desktop—Desktop system designated by the manufacturer for desktop or gaming level use, typically meaning it is not designed or recommended for use with 3D CAD applications
- Consumer Laptop—Laptop designated by the manufacturer for desktop or gaming level use, typically meaning it is not designed or recommended for use with 3D CAD applications.
- Tablet—Touch-screen device with integrated components.
The Hardware List page contains only the hardware products that Autodesk has tested for use with certain Autodesk applications. Autodesk tests a variety of hardware, but focuses primarily on hardware the manufacturer has indicated is workstation-grade and designed to work with 3D CAD applications.
Unless otherwise noted, Autodesk hardware certification tests are run on systems containing a single video card with a single monitor attached. Autodesk does not currently run certification tests on systems with multiple graphics cards installed or multiple monitors.
Author: CADspeed Editors
The most compelling reason to install multiple GPUs is to drive multiple high-resolution displays. The secret’s out that “multi-mon” is the single best way to improve your productivity. Anyone who’s gone to two displays (or three — or more!) will tell you they could never go back to one. And more graphics cards can display more pixels across more monitors.
Which Graphics Card Works for You?
That said, you don’t necessarily need to populate two cards to run two monitors, so pay attention to the cards you’re selecting. NVIDIA’s Quadro with nView and Mosaic technology can support two displays across most of the product line. A single high-end AMD FirePro V7900, with its Eyefinity technology, can handle four on its own, thank you very much. As such, if your performance demands have you buying midrange or high-end cards, you might get all the screen real estate you want with one card. But if you’re much hungrier for pixels and screens than you are for polygons per second, you might consider two less-expensive, dual-monitor cards.
On top of multi-monitor support, you can use that extra slot to turn your workstation into a supercomputer. An exaggeration? Not to some. General-purpose computing on GPUs (GPGPU) technology is still evolving, but many of the applications that show the most promise are the ones of most interest to engineers and other CAD users: applications such as computational fluid
dynamics (CFD) and finite-element analysis (FEA). Simulation software developers such as ANSYS and Abaqus are porting code to harness GPUs to deliver big speed-ups — in many cases tenfold or even 100- fold increases — over CPU-only computation.
High-end graphics cards usually require more power than the 75 watts supplied by the typical x16 PCI Express interface. Workstation OEMs accommodate their extra needs via auxiliary power cables drawn from the supply. Some high-end and virtually all ultra high-end graphics cards are dual-slot thickness. They insert into one PCI Express x16 connector, but their thickness means an
adjacent x16 slot may be blocked and rendered useless.
Make the Right Choice
When purchasing a workstation online, the OEM’s product configurator should let you know if the chosen card or cards will mate to the chosen system, with respect to power supplies and connectors, the number of available PCI Express x16 slots, and whether a dual-slot card has sufficient clearance. For example, when outfitting graphics on a smaller chassis that can’t accommodate two dual-slot cards, chances are the OEM will only offer the option of two entry-level or two mid-range cards, both of which are single slot width.
For that matter, if you’re perusing the latest flavor of entry level workstation, full-length cards may not have clearance lengthwise. Again, the online configurator should ensure compatibility, so you shouldn’t have to worry about these issues.
Where do you begin your quest for the right workstation? This particular hardware search should start with your software.
Let’s be real: Nobody relies on just one application over the course of a day. We’re all bouncing between disparate tasks and windows. But for the majority of CAD professionals, there is one application — or maybe a couple — that consumes the bulk of your hours at the desk. What’s the app that dominates your day? Got it? Now hit the web site of the software developer and find the minimum and recommended system requirements for your killer app. AutoCAD users can find this information at http://usa.autodesk.com/autocad/system-requirements.
Minimum is the Starting Point Only
In most cases, an application’s minimum requirements set an extremely low standard, as the software vendors begrudgingly must address the least common denominator of the installed base. We don’t recommend you follow these guidelines, but it’s worth making a note of the minimum graphics, system memory and CPU requirements. On the other hand, it’s highly likely that any new workstation on the market today will meet or exceed these numbers.
More interesting is the list of recommended or certified hardware. For SolidWorks, Dassault Systèmes (as of this writing) specifies a minimum of 1 GB RAM, but suggests 6 GB. Well, if you go with 1 GB, you’ll be sorry — even 6 GB isn’t necessarily the best choice, depending on your budget, and especially given the incredible amount of gigabytes/dollar that can be had today.
Similarly, Autodesk isn’t going to stop you from running a PC gamer graphics card, but the company will tell you which cards are optimized for performance and built for reliability when it comes to supporting AutoCAD or Autodesk Inventor.
Increasingly, the only CAD-certified graphics cards are professional-brand NVIDIA Quadro and AMD FirePro. That’s because software developers have consistently seen the fewest bugs and problems with cards that, like the system overall, have been exhaustively tested and tuned for professional workstation applications. In fact, the major CAD software developers will help you address issues related to running a Quadro or FirePro card, but they dedicate no support cycles to fixing bugs on consumer-class hardware.
AMD launched the AMD FirePro A300 Series Accelerated Processing Unit (APU) for entry-level and mainstream desktop workstations. Featuring AMD Eyefinity multi-display technology, the AMD FirePro A300 Series APUs are designed for CAD and media and entertainment (M&E) workflows.
AMD FirePro A300 Series APUs combine CPU and GPU functionality on a single chip to blend workstation performance and application-certified compatibility required to help keep design professionals productive in their work.
“Design professionals demand workstation-class tools that enable productivity and flexibility in their workflow, and the AMD FirePro A300 Series APUs enable workstation integrators and OEMs an exciting new computing platform on which to design and build powerful, entry-level desktop workstation configurations,” said Matt Skynner, corporate vice president and general manager of AMD Graphics.
According to the company, the AMD FirePro A300 Series APUs are the first single-chip processors capable of delivering the workstation-class visual computing performance required for advanced professional design workflows. The introduction of AMD FirePro A300 Series APUs is designed to allow OEMs and workstation integrators (WSIs) greater flexibility, enabling new workstation designs that help save space, are energy efficient, and have low heat and noise levels without compromising true workstation-class performance and reliability.
AMD FirePro A300 Series APUs were developed for the entry-level and mainstream workstation segments, providing a blend of CPU and GPU performance and industry-leading features to keep design professionals efficient:
- Support for AMD Eyefinity Technology for enhanced efficiency and immersive, multi-monitor productivity;
- AMD Turbo Core technology, where CPU and GPU performance are dynamically scaled depending on workload demands, effectively providing a more responsive experience;
- Support for horizontal display resolutions up to 10,240 x 1600 pixels, enabling large desktop spaces across multiple high-resolution display devices for advanced multitasking;
- Support for Discrete Compute Offload (DCO), allowing additional compute capability by using discrete AMD FirePro GPUs in parallel with APU graphics for extended GPGPU performance;
- 30-bit color support to enable image and color fidelity for advanced workflows such as color correction and image processing when using displays capable of 10-bit-per-channel operation;
- Dedicated UVD (universal video decoder/VCE, or video CODEC engine) media encoding hardware for faster “fixed function” GPU processing of H.264/MPEG4 files and other motion media formats when using compatible software, to free up CPU resources for other tasks.
Pricing and Availability
The AMD FirePro A300 Series APUs will be available in systems from a number of workstation integrators starting in August 2012.
|AMD FirePro A300 Series APUs|
|APU Model||TDP||CPU Cores||CPU Clock (Max/Base)||AMD Stream Processors||GPU Clock||Unlocked|
|AMD FirePro A300||65W||4||4 GHz / 3.4 GHz||384||760 MHz||No|
|AMD FirePro A320||100W||4||4.2 GHz / 3.8 GHz||384||800 MHz||Yes|
Author: CADspeed editors
BIMx is GRAPHISOFT’s solution to explore, present, communicate and share design. BIMx enables architects and their clients to walk through professionally rendered 3D models with an easy-to-use navigation interface.
BIMx files can be exported from the ArchiCAD BIM software as a self-contained executable file for Mac or PC, or as a BIMx file that runs in the BIMx player app on iOS mobile devices such as the iPhone and iPad.
If you are not familiar with BIMx yet, you can try it now — just download a sample file along with the player environment from the Facebook-integrated BIMx community site.
How Large Can BIMx Models Be?
The maximum size of a model depends on the device where the project will be presented. BIMx uses OpenGL technology, so the video memory is often decisive. Still, due to smart optimization, even mobile devices can run amazingly complex models.
It is important to note that the BIMx file size is not indicative of the model complexity. What really counts is the memory usage of the geometry. When saving a BIMx file, this geometry size is calculated and labeled either Small, Medium, Large and Extra Large.
Small models run on any device. Medium size models will most likely run on mobile devices, but might be slower to navigate; while large models will only run on the latest mobile devices like iPad2 and iPhone4. Extra large models are not suitable for mobile devices, but will work well on desktops and laptops with powerful video cards.
How Can I Optimize Model Size?
By optimizing your model, you can achieve smoother navigation, especially on lower-spec devices. Optimization means lowering the size of memory needed to run your model. You can achieve this in three ways:
- Lowering the polygon count of the model
- Reducing the number and size of textures used
- Exporting model without global illumination.
Lowering Polygon Count
With the help of ArchiCAD’s PolyCount Add-On (which is a goodie tool — see ArchiCAD downloads under ArchiCAD’s Help menu), you can keep track of the overall polygon count of your model.
You can reduce the number of polygons by:
- Filtering elements — turn off layers of building elements that you don’t necessarily want to show in your model. Use the marquee tool to crop the model if you only want to show parts of it.
- Reducing the complexity of objects — many library objects have settings for level of detail. Curved elements also have resolution settings. Lower resolution means fewer polygons.
- Leaving out unnecessary details — plants, car and people objects are often very complex. Look for such objects with low polygon counts. Door knobs, faucets, taps are often very complex even though their model dimensions are small.
The number and size of textures can greatly inflate the model size. Here are some tricks to optimize textures:
- Use low-res, compressed images (e.g. .JPG files) as images. With an image editor you can reduce the texture map’s size to a size which still looks good enough in 3D, but results in a smaller .JPG file.
- Use as few textures as possible. Make sure that similar materials use the same texture map file.
- Don’t apply texture to elements whose model dimensions are small and therefore the texture doesn’t really improve the overall image quality.
Export Without Global Illumination
Global Illumination is an optional setting at model export that adds a more realistic lighting effect to the model, but uses considerable hardware resources. In the BIMx desktop viewer, you can check exactly how much video RAM it requires (see Figure 2). If a model proves to be too heavy with global illumination turned on, re-export the model a second time without this setting.
Author: Gergely (Greg) Kmethy, director of customer support at GRAPHISOFT