There you go:
https://www.forbes.com/sites/jasonevangelho/2018/07/09/buyer-beware-nvidias-geforce-gt-1030-is-a-gro...
Sneaky!
As HP config info details DDR5:
https://support.hp.com/gb-en/document/c06093034
NVIDIA GeForce GTX 1030 (2 GB)Form Factor: LP (half height) PCB with ATX bracket (fan solution is dual slot)
Dimensions: 16.76 cm x 6.86 cm (6.6 x 2.7 in)
Rear I/O connectors: Single Link DVI-D + HDMI
Maximum resolution:
Memory size: 2 GB (64-bit)
Memory type: 256Mx32 GDDR5 @ 2 pcs
Total power consumption: <35 W
Supports up to two displays at the same time.
Engine clock: 1227 MHz (Base)/1468 MHz (Boost)
Memory clock: 3000 MHz (6 Gbps)
Cooling: Active fan-sink with 2 pin fan control
DirectX: DX 12
PCIe: physicalx16, electricalx4 Gen 3
You are best advised to save this page / make a screenshot - and raise with HP.
In the worst case it's the foundation to return the PC to them or supplier you bought it from (assuming you have warranty etc.)