Question
Because the numbers arent nice and even, just derive or show the equation (from chapter 1) that would allow you to calculate what frequency the
- Because the numbers arent nice and even, just derive or show the equation (from chapter 1) that would allow you to calculate what frequency the AMD CPU in question 6 would need to be to match the Intel CPU IPS, but you dont need to try and resolve the calculation. 1 mark
- Typical air-cooling solutions range in heat dissipation performance from about 4.5 watts to 140 watts. A typical mid range processor dissipates about 90 watts, and a high-end version from the same processor family dissipates around 140w. These processors have the same capacitive load but operate at different voltages and frequencies (typically 1.2 volts for mid range, 1.4 for high end). Derive an equation to show what the difference in frequencies might be between these processors (hint, this is the same equation as the power wall, except now we know Pnew and Pold, and dont know Fnew or Fold). 1 mark
CPU time problem
For a given CPU integer operations a+b, and a*b take almost identical amounts of time, for floating point (32 bit) multiplication takes approximately 3x as long. Floating point additions and integer additions take nearly identical times. (Yes, those are nearly real numbers for Intel Haswell CPUs). For a program that is 20% logic operations (which take the same no matter what), 40% additions and 40% multiplications, derive a formula to calculate the estimated performance of changing the maths from Integer to Floating point operations on the same CPU 1 mark
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