Unfortunately I have to buy a new motherboard.
Should I wait for the ryzen 3000? Or buy an i9 9900k now?
Will Vegas work with zen-2 and ryzen 3000?
What do you all mean?
Vegas works just fine already with the Threadripper family, and my Ryzen works great with it as well. Being that the lower end 8 core variant of the Ryzen 3k series outperforms the 9900k in cinebench, I'd probably wait for it, as even the 16 core is cheaper than the 9900k.
64-bit apps should work fine on AMD because AMD developed the original 64 bit instruction set. This is why many drivers' directories are named AMD64 when you are looking for the 64-bit version of the driver... Intel later adopted AMD's 64 bit ISA to work on their 64-bit chips, Intel did this fairly well & apps MUST work well on Intel since they have market share, so 64-bit apps work about the same on either AMD or Intel.
If there are problems with AMD, it is with running older 32-bit apps. AMD adapted Intel's 32-bit code to work on their 64-bit CPUs but sometimes poorly written apps hang-up on AMD whereas they seem to work OK on Intel. I have one such proprietary single-thread 32-bit app for a legacy device. It's hit & miss with AMD but mostly OK with Intel. Therefore I chose to upgrade one workstation to a 9900K vs. wait for Zen2. All my older apps work on this new system & I can always upgrade the next workstation to Zen2 if it gives more bang/buck than my 9900K upgrade.
BTW, I only paid $1350 USD to upgrade from a Xeon to a liquid-cooled 9900K, Vega64 Liquid-cooled, ASUS Z390 WS workstation-class motherboard & 32GB of DDR4 (placed in former XEON case...) I don't expect to be able to build a faster Zen2 system for that price until prices drop around Thanksgiving or even after the holidays... Demand for the new 7ns products will push prices up for a few months & I don't have time in the summer to build & test a system anyway...
AMD announced the 12-core Ryzen 7 3800X at Computex available July 7 for around $500 USD retail. The anticipated 16-core has not materialized. They are comparing the 3800X to the $1200 Intel Core i9-9920X. An overclocked (5.0 ghz) 9900K also compares favorably to the 9920X especially in Vegas & Photoshop... IMO PCIe 4.0 is more noteworthy. AMD's 7ns CPUs & GPUs are less power-hungry, run cooler, and may overclock well. We'll have to wait until July to see some real world benchmarks...