danielperez

Aham.. I see. Then there´s something I don´t understand: What are the advantages of using a Tesla or a Quadro then? I guess they are not the best ones for rendering, am I wrong? Another question: In case render engines don´t really take much advantage of fp64 Cuda Cores, the 780 is suppossed to be much faster when rendering than the 580 due to its Cuda Cores amount (x4 the amount of the 580), right? Does it depend on the render engine we use? What am I missing here? This is something I´d love to understand to make a better decision the next time (I am afraid it won´t take long until I have to change my graphics card again). Thanks!

I ended up buying a 580 3GB for 160€, but now I don´t know if it was the best option. In the same range of price I could have gone for a second hand 660Ti or 750Ti. Would them have been a better option than the 580 3GB? Maybe I can still cancel it. I was absolutely sure yesterday about the fact that the most important when rendering were the fp64 type Cuda Cores, but now I see I was wrong (according to what you say, and I am sure you are right). So what really counts is the total number of Cuda Cores regardless of its kind? Or in the past (5 years ago) render engines used fp64 but now that´s changing and makes no sense to use a 580Gtx due to its fp64 Cuda? Thanks!

Mmm, I understand. First of all, thanks a lot for your extense and complete answer. It clarified all of this a lot to me. So basically you are saying that I should go for the 580 unless I am gonna use super complex scenes? Correct me if I am wrong: Due to its Cuda fp64 core numbers the 580 renders fasters but can´t handle scenes as big as the 780 can (but this one renders slower). After reading a lot, that's what I got. So this means: In case I could get a 3gb 580; would it be the best option to go for? The thing is: If renders speed is not that different between 580 and 780, I would go for 780 due to its ram amount. If the 580 is way faster, I don´t know if the 780 is worth the extra money. So, resumming, what would be the best of these three options for my purposes? -580 1,5gb -580 3gb -780. Thanks a lot again.

Hello everyone. It´s been a long time since I begun to read this forum but until now I never decided to write, and I am doing now because I have a big doubt and the more I read the more confused I get. I´ll try to be clear: I am a 3D artist (still studying and learning) and I primarily use 3Ds Max and Vray or Mental Ray to render (still deciding which one I like the best). I´d like to begin to use Vray RT and I am trying to find out which card of the following ones you would recommend me and why: GTX 580 1,5 gb vram (120$) GTX 590 3 gb ram (split into 2 cores) (210$) GTX 780 (3gb monocore)(260$) I have read that the 580 and 590, when rendering, are about the same and they work in a very similar way since the 590 is dual core and it divides the amount of ram (and 3ds max or vray Rt can´t take advantage of both cores, just of one of them, resulting in a maximum of 1,5 gb of ram). My questions are: 1- Does Vray RT take advantage of both core´s Cuda Cores or just of one of them as it does with ram? Does it add both core´s Cuda Cores number when rendering? 2- What are the advantages of a 590 when compared with a 580? This is a little confusing to me. It behaves like two 580s in Sli. 3- What advantages does this have in relation to using a simple core Gtx 580? Is it worth it the extra cost? 4- And about 780, which has a simple core with 3gb of ram; should I go for it? 5- What about the behaviour of the viewport? Does it drastically change when using one or another of the listed cards? Thanks a lot in advance! I´d really appreciate if someone could clarify this to me.