: For Iray rendering, an NVIDIA video card with 4GB+ VRAM and CUDA Compute Capability 2.0+ was recommended.

: It handles large datasets and high-poly models from the Genesis 2 and Genesis 3 generations more reliably than its 32-bit counterpart. System Requirements for 4.8.0.59

Daz Studio 4.8.0.59 (64-bit) was a landmark release in 2015 that introduced the NVIDIA Iray Render Engine

While a 32-bit version was released, the is essential for modern 3D work for several reasons:

Upon first launch, go to Window > Workspace > Select Workspace > Ultra (64-bit) . Then, navigate to Render Settings > Advanced and set "Ray Tracing Bounces" to 16 (default is 8). This gives you cinema-quality lighting without destroying render times.