Question Negative results from faster ram

Oct 28, 2018
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Hello all! I had 2 spare 8gb modules of 3200mhz ram and decided to put them in my friend's pc. He has an i5 7600k on an Asus Strix z270e motherboard. I installed the ram and enabled xmp but his pc actually performed worse in Time spy, Firestrike and Cinebench r20. Once I swapped back to his old 2400mhz modules his performance went back to normal. Any ideas why this may be happening? Thanks in advance!
 
Oct 28, 2018
12
0
10
The 3200mhz is 16-18-18-36 and im not sure about exact timings of the 2400mhz kit but it was definitely c14. That said the pc was also a bit laggy while running multiple tasks using the 3200mhz kit.