Rtx 2080 has an actual clock of 1750mhz, but its effective memory clock is 14ghz. Don't you calculate the effective memory clock of graphics cards by multiplying the actual clocks by 4 (quad pumping)? Why is it octo pumped on the rtx 2080?
Yes, you need to multiply by 4. One general example, not for your GPU though. The effective speed of a QDR memory can be calculated as given below: QDR = Quad Data Rate or Quad-pumped:
QDR_Effective_speed = Real_speed x 4.
e.g., 1750*4 = 7000 Mhz. Its DOUBLE DATA RATE and Quad pumped. Not octo.
It's GraphicsDoubleDataRate6 memory/RAM. GDDR6 is Double Data Rate memory.
So the effective frequency is 2 x 2 x base frequency = 2 x 2 x 1750 = 7000 MHz.
Make a note. It is GDDR (Graphics Double Data Rate,), so the memory will communicate on both the leading/ trailing edge of its pulses. MSI Afterburner will show you effective memory speeds, but GPU-Z on the other hand will show you the actual frequency. Double that number and it will match.
So it’s 1750 times 2 times 4?Why don’t other gpus have an effective memory clock 8 times the actual clock? Rx570, for instance, also has an actual clock of 1750mhz, but it’s effective clock is only 7000mhz.