Hello Alan,
Glad to get your message.
The difference between the first version BP-VG3090FE and the second version BP-VG3090FE-V2 is the backplate, others are the same. And the function is nearly the same too.
About the cutout backplate version, that the water block can be contacted to the card directly with the thermal pad. It has a better thermal function than the one which contacts the card with a backplate and thermal pad too, at least 5c difference.
About the Mobius water block BPPRE-VG3090FEID, the design is different and looks much nicer. It could not be used with BP-EVB3090FE because the backplate could not be replaced. But you can use BP-EVB3090 directly on the backplate of BPPRE-VG3090FEID. About the discount, feel free to contact us too.
Glad that you like our masks. If you want to buy it, please send an email to follows address, we will send the quotation to you.
Any questions, feel free to contact us.
shopservice@bitspower.com.tw
Lily Wong
Thank you!