Pages: [1]
Print
Author Topic: GPU Physx Card and Video Memory  (Read 5035 times)
joeyshorty2
Newbie
*
Posts: 45


View Profile
« on: July 30, 2013, 09:44:24 am »

Hey guys, I've got a question, i've been looking around and I can't seem to find a straight answer and you guys might know better anyways. When you run a second gpu as a physx card. Is the video memory on it allocated at all? I'm guessing for Physx Games it of coarse is but outside that probably not. Just wondering if anyone has an idea?
Logged
Zogrim
Administrator
Hero Member
*****
Posts: 564


Expert Scrounger


View Profile WWW
« Reply #1 on: July 30, 2013, 11:04:43 am »

Yes, GPU PhysX calculations do indeed allocate a certain amount of video memory to store collision geometry, contact data, etc.
Exact amount depends on specific application. Around 128-256 mb, I believe.
Logged

PhysXInfo.com Team
joeyshorty2
Newbie
*
Posts: 45


View Profile
« Reply #2 on: July 30, 2013, 09:59:47 pm »

Thought so. What about games that are not physx? I've been trying to test this myself but I don't have anything that uses even all my video ram off the main card.

Again I'm figuring not but thought I'd ask.

Also I don't know why I didn't try this earlier but last night I found out I can hook up my second monitor to the other card, which is a really nice thing as it frees up some usage of my other card. I felt really stupid for never trying it before haha.
Logged
Zogrim
Administrator
Hero Member
*****
Posts: 564


Expert Scrounger


View Profile WWW
« Reply #3 on: July 31, 2013, 01:40:03 pm »

Thought so. What about games that are not physx?

I think that games that are not using CUDA-based physics acceleration or any other specific-GPGPU API (I'm not aware of such games) are not allocating any memory on a dedicated card, unless they are running in SLI or Crossfire mode.
Logged

PhysXInfo.com Team
Pages: [1]
Print
Jump to: