If you are still using Lightroom version 3.4 then the GPU has no real affect. The on board graphics is fine. I run LR CC 2015.4 on a 4+ year old Dell notebook with an i7 CPU where the only GPU is built into the i7 CPU. LR runs fine and so does the NIK software.
So why is my rendering in Color Efex so slow? Is it because of the slow CPU? I'm on Phenom II (I think), 4 GB RAM. The rendering is so slow that when I change e.g. the u-point radius it takes several seconds (!!) to take effect.
Thanks for answering.
Yes and limited RAM.
You really need to be running at least 8 GB RAM, and you should be using a 64-bit operating system. Tell us about your computer, include as much information about its specifications as you can. I'm using Lightroom CC on Windows 10, 8 GB RAM, and Color Efex Pro works quite well.
Why aren't you using the Silver Efex Pro 2 for B&W conversion?
I am using Silver Efex Pro 2.
The processor is AMD Phenom II 3.20 GHz, 4 GB RAM The graphics card is AMD 760G. Windows 7 Pro. That's enough for Lr 3.
So what's your suggestion? Get more RAM ad CPU and forget about graphic acceleration?
Thanks for answering
I haven't read the Google NIK page you are referring to, if you post a link to it I'll take a look, but I think they might be talking about the new Adobe LR 6 where they can use the GPU to supposedly speed up some aspects of LR.
There are so many Phenom II CPUs it isn't funny.
In your first post you said you are using Color Efex.
I am not familiar with AMD CPUs or the boards they go in. All I know is LR CC and the NIKs software runs fine on an older Dell notebook and a bit faster on my desktop that is 5 years old and does have a video card. Adjustments are nearly instantaneously rendered. But there is 8GB of RAM in the notebook and 16GB on my desktop. Both running Win 7 Pro
OK - thanks. I guess this answers my question.