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Theoretical peak FLOPS

Question asked by niederb on Jun 6, 2013
Latest reply on Jun 6, 2013 by kd2

I have question regarding the theoretical peak FLOPS of my graphics card.

I have a Radeon HD 7970 GHz Edition which has a peak of 4096 GFLOPS.

 

Now I would wanted to calculate this number.

When I just multiply the core clock (1000 MHz) with the number of cores (2048) I get 2048 GFLOPS.

 

What am I missing to get the 4096 FLOPS? Does a MAD operation count as two operations?

Then again according to the AMD Accelerated Parallel Processing OpenCL Programming Guide it can execute 4 MAD, ADD or MUL operations per cycle (Page 5-23)?

Which would mean the number of FLOPS would be even higher.

 

Can someone explain how to calculate the theoretical peak FLOPS?

 

Many thanks!

Niederb

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