AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

Distinguished Contributor
Posts: 147
Registered: ‎10-06-2008
Message 1 of 4 (896 Views)

New computer purchase - 32gb RAM and/or SSD

896 Views, 3 Replies
01-16-2013 09:56 AM

We do large residental projects with very tight corridors (2-5' frequency due to curves and walls in some areas).  Our design files are averaging 30-60 meg for grading.  We seem to get hung up on Civil writing temporary save files (.tmp) about every 10-15 minutes (not ac$ files).


Would anyone suggest getting 32 gb of RAM on a new computer or would I even use that much?  SSD v Traditional HD? Here are the current specs we are looking at:


2nd Generation Intel® Core™ i7-3820 (10M Cache, Overclocked up to 4.1 GHz)

Windows® 7 Professional, 64Bit, English

32GB (4 X 8GB) Quad Channel DDR3 at 1600MHz

1.5GB GDDR5 NVIDIA® GeForce® GTX 660

1TB 7200 RPM SATA 3Gb/s




*Expert Elite*
Posts: 5,613
Registered: ‎10-12-2006
Message 2 of 4 (893 Views)

Re: New computer purchase - 32gb RAM and/or SSD

01-16-2013 10:05 AM in reply to: clay_carr

Not sure you would ever use that much RAM.  I can see one small bottleneck - 7200 RPM SATA II drive.  Go with a SATA 6 Gb/s drive, something with a large cache size.  Most motherboards have at least two ports for these.  If you have all your work, settings, etc. on a network and don't mind a *little* extra cost go with a SATA 6 Gb/s SSD for the OS and software.  Speaking of networks, might be an idea to make sure yours is up to snuff - no point dropping major cash on an overclocked RAM monster only to show little improvement.


And, the hardware forum:

If you are going to fly by the seat of your pants, expect friction burns.
Adopt. Adapt. Overcome. Or be overcome.
A good question will be halfway to a good answer.

Posts: 259
Registered: ‎07-19-2012
Message 3 of 4 (828 Views)

Re: New computer purchase - 32gb RAM and/or SSD

01-17-2013 01:38 AM in reply to: clay_carr

Personally I doubt you'd use the RAM. On my computer I went for 16 Gb which has been more than adequate (most of my work is with large surfaces and lots of gradings), but I made sure I had extra slots to go higher in the future if needed. 

I'd do a bit of research on the 3820 processor though. Initially I was considering this one for my build but quickly changed my mind after reading various specs/reviews. If you are just using C3D, then you are better off having a faster processing speed rather than more cores, as a lot of the time you're only utilising one core.

A SSD is great. There is some debate out there about long-term reliability, but I haven't had any problem with two computer running them for a year or so now. They are waaaaaay faster than traditional HDD's. I have a sata 6 HDD for data - I'm sure it's faster than the older drives, but it's not particularly noticeable.

Infrastructure Design Suite Premium 2015 SP1
Self-built i7-3930K, 16Gb RAM, P9X79 m/board
SSD(system), HDD(data), Win7Pro64, Quadro K4000 (and another with GTX680)
Valued Contributor
Posts: 84
Registered: ‎07-18-2012
Message 4 of 4 (793 Views)

Re: New computer purchase - 32gb RAM and/or SSD

01-17-2013 04:19 PM in reply to: clay_carr

I installed a SSD drive and it has been really worthwhile. No noise, no vibrations and astoundingly fast.

Hans Moller
Surveying & Management Services
Gladstone Australia
Clevo Metabox 16GB, Intel i7-3720QM 3.1Ghz, 256GB SSD, Nvidia GTX 680M
AutoCAD Civil 3D 2013
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