Performance Issues, Possibly Caused by Page File

[ZurokSlayer21]

I use Blender on a regular basis, however my computer starts to lag after I reach around 100,000 polygons.

Now my computers specs are:
Motherboard: Supermicro X8DAH+-F
CPU: 2 x Xeon X5687 with 3.66 Ghz and 8 logical cores each
RAM: 40 GBs ECC (5 sticks each processor)
Graphics: ATI Radeon R9 290x Double D 3Gb Edition

There should be no reason that I would be experiencing lag, where my side computer, with only 4 Gbs of RAM, starts to lag at 500,000 polygons.

Now I heard from my IT guy that it may be because of my page file, and that Blender is taking time to access my HDD. It is also just blender, because Unreal Engine works just fine, which is way more taxing than Blender.

My question is should I move my page file, or disable it. Or could it be because the Xeon's are triple channeled, but I have 5 sticks per processor.

 

[SinxarKnights]

Use something like GPU-Z to monitor the VRAM usage when it starts lagging. Sounds like it is running out of VRAM to me but i've never used Blender so I can't say for sure.

 

[ZurokSlayer21]

Use something like GPU-Z to monitor the VRAM usage when it starts lagging. Sounds like it is running out of VRAM to me but i've never used Blender so I can't say for sure.

I'll try this, but my question is why would it be running out of VRAM if it is 3 GB and dedicated, while my other computer is about 1.5 GB and is shared from actual RAM?

 

[ZurokSlayer21]

I installed GPU-Z, but was only reaching around 250 MB. Far from the 3GB of my card.

I however fixed the problem by downloading a newer version of Blender, which is version 2.78c, where I was using 2.75. Now it starts to lag at around 15 million polygons. I don't know, but it may have just been that version.