Out of interest, has any of you tried a riserless board with non-blower-style GPUs? Surely they're too close to eachother to work efficiently, i.e. heat cross-contamination must be terrible?...
I will be doing just that - and yes, they are awfully close together. I'm planning on using supplemental fans to blow air either down onto the cards or across from the side opposite where the video jacks are.
some riserless boards by onda have more spacing than others. the b250 d8p v1 has 2.5 spacing, some other models ive seen are only 2.
the d8p gives a decent amount of room between cards if they are double wide. i still use fans to force more air through though. all non blower type cards here.