nx7 官方推荐系统配置（英文）

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System requirements guidelines
Defining the minimum system requirements is difficult because key requirements, most notably memory, can vary dramatically from user to user. The following are general guidelines you may want to consider before purchasing a system.
Processor performance
Although raw processor speed has a major impact on system performance, other factors also contribute to overall performance; for example, the type of disk drive (SCSI, ATA, Serial ATA), disk speed, memory speed, graphics adapter, and bus speeds. The general rule is "the faster the processor, the better the performance," but this only applies when comparing like architectures. For example, it is difficult to arrive at performance expectations for an Intel processor compared to a Sun SPARC or IBM Power processor just by looking at their respective processor speeds. There is also a general trend today to de-emphasize processor speeds and move more to multi-core processors, which actually have lower processor speeds.
SMP
Having Symmetric Multiprocessing (SMP) turned on in a system with a single processor incurs a slight overhead and never makes the system run faster, so it is best to turn SMP off if you do not have an actual SMP system. SMP is supported in NX via Parasolid, and individual performance gains are difficult to quantify. You need to evaluate your actual performance gains using your own data.
Hyper-Threading
Using Hyper-Threading (HT) is not the same as having multiple processors (SMP), and the recommendation is to not turn HT on when running NX. NX will function without problems either way but turning HT off could improve performance slightly.
6 p2 Q5 E* \! d" s  kMulti-Core
Multi-core processors are similar to SMP, because there are two or more actual processor cores but they are delivered in single processor packages.  Siemens PLM Software has found that multi-core performance characteristics are similar to SMP. The one advantage of multi-core over SMP is that this technology has proliferated much faster than SMP and is now more common in workstations, servers, and even laptops. All major hardware vendors are already shipping multi-core processors.
Multi-core technology is complex and, depending on the configuration, can actually have a negative performance impact. This is due to the potential conflict of multiple cores sharing system resources. like cache and bus bandwidth, as well the need for the system to manage and control an increasing number of cores. Increasing the number of cores does NOT always translate into better performance. For example, a dual socket dual core could show better performance when compared to a single socket quad core.
Many systems enable you to turn off half the cores via the bios, which can enable you to compare performance with a different number of cores active. Some users may find turning off some cores will actually improve performance.
" I& |& ~$ x5 R0 ~5 {( [In summary:

• Turn SMP on only if you actually have an SMP system. Having it on in a single-processor system incurs a slight overhead.
• Turn Hyper-Threading off because it has little value for compute-intensive Parasolid (and therefore NX). This includes SMP systems with Hyper-Threading.
• Turn SMP on if you have a multi-core system.
• Never assume that by simply adding more cores you will see better performance. Always test first.
  

Memory
* R' w$ ~% N& z% TSiemens PLM Software recommends that you have a minimum of 1 GB of memory for 32-bit implementations and 4 GB for 64-bit systems. You should evaluate your usage patterns to determine if you need more memory than this. Having too little memory can have a serious impact on performance, so it is critical that you always have enough memory. Memory requirements for Microsoft Windows XP and Microsoft VISTA are different, with VISTA having higher resource requirements, so customers should adjust based on their operating system. See the VISTA section for more information about VISTA requirements.
The following table is a reference tool to show general memory and CPU limits supported by 32-bit versus 64-bit Windows.

General Windows memory and CPU limits ' r' Z5 T- S/ U0 b
General memory limits	32-bit	64-bit $ i5 D/ p& M& l, G# p
Total Virtual Address Space	4 GB $ x  [& c) h: W& s9 d5 W; P	16 TB
Virtual Address Space per 32-bit process (1)	3 GB (2)	4 TB 5 _# M& o4 o' T- p- r/ h$ a
Virtual Address Space per 64-bit process 3 Y2 j8 h) a$ ^6 v	n/a & \$ l) W% q& b) Z	8 TB
Paged Pool	470 MB	128 GB
Non-Paged Pool	256 MB 4 T7 [6 h/ d, o8 S* b. F0 e	128 GB # m( V/ ]/ x3 |! f/ x
System Cache	1 GB	1 TB

(1) NX is built to provide additional space for user data via LARGEADDRESSAWARE.
1 C1 z9 W% q, O(2) Requires /3GB switch in boot.ini file
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Graphics adapters
. S4 q# y% B: T% }$ X+ F3 @All the NX certified systems contain graphics adapters that meet all Siemens PLM Software requirements and are fully supported by our hardware partners. The graphics adapters supported are carefully selected by working with our OEM partners as well as our graphics vendor partners. We do not support low-end, consumer or game cards, since these graphics devices are developed for the DirectX market and are not well supported under OpenGL. Because a majority of platform/hardware problems are graphics related, it is critical that all the graphics adapters that NX supports are designed for OpenGL and have the highest level of support from our hardware vendors. We highly recommend that customers only use supported graphics adapters and Siemens PLM Software certified drivers.
Graphics adapters that are not recommended for use with NX, because they are considered mainstream/enthusiast cards used by home/office/gamer markets, include:
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• nVidia: GeForce, nForce, and Quadro NVS
• ATI: Radeon
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Customers running Microsoft VISTA will find that VISTA will generally require graphics adapters with more on-board memory especially when using the VISTA AERO turned on. See the VISTA section for more information about VISTA requirements.
For the latest information on certified graphics cards and driver versions, please visit the Customer Support (GTAC) Web site.
% b0 N1 c  B* ?# D; P+ SMultiple monitors
0 _1 ]9 n; k) m) p) wSiemens PLM Software supports multi-monitors but with limitations. These limitations were necessary due to the large number of configurations possible. This does not mean that other combinations will not work, just that these conditions are what Siemens PLM Software tested and are supported. In time these guidelines could be extended or relaxed.
The following is a summary of findings for the support of multiple monitors.

• NX 6.0.1 or higher, no older releases will be supported.
• Two monitors only.
• LCD monitors only
• Run with native resolution and aspect ratio.
• Workstations only, but the plan is to add laptop support as soon as possible based on the availability of drivers.
• Laptops will be tested without docking stations or port replicators (direct connection only).
• Windows XP-32 and Windows XP-64 are supported first, Vista and Linux will follow later.
• Horizontal Scan mode (not Vertical) and only with identical monitors.
• Dual View (Nvidia) or Extended View (ATI) modes, but the user must have the display window entirely in either the primary or secondary monitor.
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Customers do not have to comply with the configurations mentioned above but Siemens must be able to duplicate the problem on the configurations in our labs before being able to investigate customer issues.