GPU-Z vs Afterburner?

[BruceUSA]

My stock RTX 5080 Core Clock-2295/2775mhz boost. Memory Clock-1875mhz. Overclocked with the following;
Core Clock +325mhz
Memory Clock +3000mhz. I export a video in Davinci Resolve Studio , GPU run at 100% full throttle. In afterburner, GPU Core Clock display 3240-3247mhz but most of the time it stay at 3240mhz which is normal. Memory Clock display 17801mhz. My question is why GPU-Z show different? Please see attach screenshot. I don't understand the 17801mhz, can some body explain?

 

[mackerel]

GPU-Z shows real clock, Afterburner shows some kind of effective clock. It's a bit like with DDR ram when you have CPU-Z showing real clocks, and most other places using effective clocks (MT/s). On GPUs the Afterburner value is 8x actual clock. On ram, MT/s is 2x actual clock.

 

[BruceUSA]

Thank you. Good to know about the difference between the two. By looking at the memory clock 2250mhz that got me confused but, after looking at the GPU-Z carefully I realized that I did overclock by +3000mhz which the GPU-Z did accurately shown the bandwidth of 1152 Ghps (36 Gbps) bandwidth stock was 960 Gbps (30 Gbps)