magneto Posted May 8, 2015 Share Posted May 8, 2015 Hi, This card seems like it's half the price of GTX 980. Is it a good card to upgrade from GTX 580 compared to GTX 980 which is a lot more expensive? I remember reading a lot of issues about it when used for Houdini so not sure if things have changed. Thanks Quote Link to comment Share on other sites More sharing options...
henrik.g Posted May 8, 2015 Share Posted May 8, 2015 Yup. As of now it works fine. I played only a little bit with the whole GPU acceleration for fluids. So I cant really say anything about that. Most of the Stuff I had to do needed mor ram than the 8Gigs that come with the card… If you have any specific questions I am more than happy to reply. 1 Quote Link to comment Share on other sites More sharing options...
magneto Posted May 8, 2015 Author Share Posted May 8, 2015 Thanks. I thought it only had 4GB? Do you use 2 of them? Also I read but it seems like some people compare these to GTX 780 for some reason. I am not up to date with the GFX cards to know much. Apart from GPU rendering, is there any advantage to having more GPU RAM? I know a faster card helps but not sure how having more memory benefits Houdini. Quote Link to comment Share on other sites More sharing options...
henrik.g Posted May 8, 2015 Share Posted May 8, 2015 There is the Sapphire R290 Vapor X version which holds 8Gigs. I was thinking this could help with doing RnD in rather Low Resolutions. Not rendering but Simulating using OpenCL. The OpenCL support is afaik better on the AMD side than on the Nvidia Side of things. 1 Quote Link to comment Share on other sites More sharing options...
acc3d Posted May 8, 2015 Share Posted May 8, 2015 There's also an MSI 8GB Radeon R9 290X for around $380 USD. I've been looking for a good GPU for OpenCL acceleration of pyro simulations. Rumor has it AMD is about to announce the R3 series of GPUs this quarter though...might be wise to wait a bit. 1 Quote Link to comment Share on other sites More sharing options...
cojoMan Posted May 12, 2015 Share Posted May 12, 2015 (edited) not x290, but 280x here - still worth taking a look at this thread (maybe from the beginning) : this is my test - http://forums.odforce.net/topic/21726-sli-for-opencl/page-3 PS. working with no issues, really happy with it, and great improvement in the openCL sims. Edited May 12, 2015 by cojoMan Quote Link to comment Share on other sites More sharing options...
magneto Posted May 13, 2015 Author Share Posted May 13, 2015 Thanks a lot guys really helpful info. Quote Link to comment Share on other sites More sharing options...
acc3d Posted May 13, 2015 Share Posted May 13, 2015 (edited) More observations about OpenCL performance in Houdini 14.0.291: I tried running the same pyro smoke simulation (1500 frames, no caching, straight to disk) on the following hardware. Results are in minutes:seconds format: Software mode: 29:20 - Intel i7-5960X CPU @ 4.3GHz OpenCL Mode: 7:20 - GeForce GTX 660 2GB (OpenCL 1.2 CUDA) 7:19 - Radeon R2 290 4GB (OpenCL 2.0 AMD-APP, 1642.5) 8:30 - Intel i7-5960X CPU @ 4.3GHz (OpenCL 1.2, Build 57) I was really surprised that the Radeon wasn't any faster than the GeForce. The other surprise was how fast the CPU is with the Intel OpenCL driver. For now, I'm going to use the CPU/OpenCL and wait for the next gen graphics cards to be released. Edit: There's also a big discrepancy in the look of results from the OpenCL vs software mode simulations. The OpenCL-generated ones don't seem to dissipate density properly. Can anyone else confirm this? Edited May 13, 2015 by acc3d 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.