All 6.x versions of boinc see correctly 620 gflops from my ati 5670 card (like wiki and amd information). Now with 7.0.18 boinc see 1240 gflops peak from the same card. I haven't update the driver.

The GFLOP value changed used before was calculated as double precision value, while not all ATI GPUs can do this. So it was changed to show peak performance when doing single precision calculations.

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So it was changed to show peak performance when doing single precision calculations.

5670 is NOT a DP card.
And 620 gflops is SP power of gpu
http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units

So, why 1240?

The 620 value is not peak value. I don't know what value that is.
But at least the value that's used in BOINC is being calculated from the values found in the drivers.

x = attribs.numberOfSIMD * attribs.wavefrontSize * 2.5 * attribs.engineClock * 1.e6

became

x = attribs.numberOfSIMD * attribs.wavefrontSize * 5 * attribs.engineClock * 1.e6

and

x = opencl_prop.max_compute_units * 16 * 2.5 * opencl_prop.max_clock_frequency * 1e6;

became

x = opencl_prop.max_compute_units * 16 * 5 * opencl_prop.max_clock_frequency * 1e6;

I know your GPU isn't a double precision GPU. I never said it was. I only said that the previous flops value for all GPUs was the double precision value and is now the single precision value.

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