Z97WS integrated graphics conflict with graphics card?

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Ian_Rob

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Jan 25, 2014
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I recently built a CAD workstation around an Asus Z97WS/i7 4790K and
though it works, there is a problem that I first noticed when using Autodesk Inventor Pro that seems to relate to more intensive usage. The program works fine upto the point I enter dynamic simulation, but as soon as I enter that mode, the cursor starts to flicker, quickly switching between an arrow and an egg-timer before hanging. I have Nortons Internet Security and it pops up with "high CPU usage(100%)" at this point.

Other programs seem a bit slow in the more intensive operations, eg Autocad LT when hatching.

Autodesk suggests that I reinstall Inventor but my instinct is that the problem is related to the hardware/operating system rather than to the programs.

I have installed the latest drivers and program updates and tried it with the AV software and the Logitech mouse software disabled but the problem persists.

The graphics card is an Nvidia K620 (which is certified for Inventor by
Autodesk.). Somebody has suggested that there might be a conflict
between the integrated graphics of the motherboard and
the Nvida card. Is it necessary/possible to turn off the integrated board graphics in favour of the Nvidia card?

The computer spec is:

AsusZ97WS.
i7 4790K.
Nvidia K620 2Gb.
250Gb Samsung Pro SSD.
3Tb SATA Hardrive.
16Gb RAM.
Corsair RM 750.
Windows 7 Pro (64bit).

Surely this build should be more than sufficient to handle these program without any problems?

I can't get to the bottom of this problem and would be grateful for any suggestions.

Thank you.
 
Solution
terry4536
In the BIOS, you can set the graphics location to Auto, integrated, or PCI EXPRESS X16.

When set to Auto, it should automatically switch to the PCi express if it detects a graphics card present there otherwise it uses the integrated graphics if possible.

When you manually select the graphics source location, it will expect the graphics there. Some times this is given as a priority list (like the boot drive priority). Some motherboards do not have integrated graphics as a motherboard feature.
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Ian_Rob

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Jan 25, 2014
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Thanks Terry

My AV software doesn't report any issues, the graphics card is powered and there is nothing else running in the background but the problem continues. I think that I will have to try reinstalling but I am not convinced that it is the solution....
 
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terry4536

terry4536

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Mar 28, 2010
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Do you have program icons in the Windows taskbar? You probably do . Those programs are all loaded on Windows startup, and are running in the background waiting on you to click the icon and open them.

Your initial question was why your CAD software was freezing with CPU usage 100% .

The things that come to mind that would result in this are as follows. The CPU is inadequate for the task. The system memory is s inadequate for the task. The GPU is inadequate for the task. Or the system resources are inadequate in general.

But you said the system is certified to run the CAD software right?

My suggestion to start off with are these.
1. Try overclocking the CPU .
2. You don't specify what the RAM is. But either get faster RAM or more RAM. I don't think 32GB of RAM is unreasonable for a CAD system.
3. If necessary overclock the GPU.
4. Increase the allotment of virtual memory to the maximum.
5. Remove any unnecessary software, and reduce the programs that are loaded at startup.

All of these suggestions will increase the system resources and speed up the system.
 
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I

Ian_Rob

Honorable
Jan 25, 2014
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10,510
Thanks again for taking the time to help.

My sytem currently runs at 4.00Ghz which is reasonably fast. I have 16Gb of memory [Corsair Vegeanace Low Profile 2 x 8Gb x 1866Mhz] which I think should be OK?


My Inventor Pro experience is limited so I wasn't sure what to expect but having contacted a guy who has a series of tutorials on Inventor on You Tube he says that [by coincidence] he has just built a similar computer using the same i7 -4790K processor and reckons after a Xeon it is the best option. He has even sent me a video showing Inventor running in Dynamic Simulation mode without any of the problems I am experiencing.

I am sure there is somthing else causing this.

I have increased the virtual memory as you suggested - to 24487Mb, the max recommended but Inventor still hangs.

I bought low profile memory in anticipation of eventually overclocking but I need a better fan/cooler before trying this significantly.

Setting the BIOS to favour the GPU rather than the integrated graphics doesn't appear to be an option and as far as I can gather installing a GPU makes this switch automatically. Is this correct?
 
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terry4536

terry4536

Glorious
Mar 28, 2010
9,743
6
46,265
In the BIOS, you can set the graphics location to Auto, integrated, or PCI EXPRESS X16.

When set to Auto, it should automatically switch to the PCi express if it detects a graphics card present there otherwise it uses the integrated graphics if possible.

When you manually select the graphics source location, it will expect the graphics there. Some times this is given as a priority list (like the boot drive priority). Some motherboards do not have integrated graphics as a motherboard feature.
 
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