CAS 20 Ram
CAS 20 Ram
It seems there might be some confusion about the RAM specifications. The timings you checked were for CL18, but now they appear to be CL20. Both values are lower than CL18, which is typically better for performance. If you're concerned about compatibility or performance, it might be worth reaching out to the manufacturer or checking the official website for confirmation. Whether you should return them depends on your specific needs and whether the issue is resolved.
Case 18 at 3600 is average, case 20 runs a bit slower. Adjust timings manually and check performance against your goals.
If it's a mistake by the shop, should return it. The performance difference is not huge though.