GPU Memory clock speed

[Stimpy127]

I have a gtx 770 Founders Edition. When I was looking at a 1080ti speeds, and I saw that the memory clock speed is only 1376mhz and I was like wtf does that say, so I open up my MSI afterburner and see that mine is running at 3500mhz. So I then look up my GTX 770 memory clock speeds and I see 1753 mhz. So why does my MSI Afterburner say that Im getting 3500mhz when the speeds are only 1753mhz? Can someone explain to me how GPU memory speeds work.

 

 

 

https://www.techpowerup.com/gpudb/2877/geforce-gtx-1080-ti  1080ti

https://www.techpowerup.com/gpudb/1856/geforce-gtx-770  770

[Jurrunio]

the clock speed mentioned in techpowerup as "actual clock speed" is the I/O bus speed of each memory module. Afterburner takes that fact that GDDR5 is double data rate, that each of its memory channels sends data twice per clock cycle into account, hence it doubles the memory speed.

[Stimpy127]

Thanks. I had the same problem with my system ram except the opposite. Cpu z said my ram was running at 1200mhz even tho i have 2400mhz ram.