NVME speed on Mac 5,1

I bought a WD BLACK SN750 2 TB into a Wolftech Pulsecard running mojave and these are the readings I’m getting. Is it normal? I get 1102mb/s sometimes tops. Was hoping to get 14xx writing like I see with evo 970 but I couldn’t get that in my country coz it’s out of date. Is this just to do with

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