To sort entries in the spreadsheet, everyone can switch the view of the spreadsheet to "list" (by clicking the 2nd entry in the 3rd pull-down menu).
With the "list"-view you can sort the data by clicking on the column names.
Although filtering with the auto filters is possible but not very feasible in the moment, cause there are not much columns with consolidated data.
I found that out myself just 5 minutes ago, perhaps you can simply include a hint in the header section of the sheet to help people like me who are not using google docs frequently.

The main problem for my personal use case is, that I can't find out fast and easy if someone else got a simular card and found out some better OC/Cudaminer setup than I have.
To support that, it would be cool if auto-filtering to the base card model could reduce the list to relevant entries.
Therefore a dropdown list in the survey form where people have to pick the card model might had helped.
But I guess we have to life now with it as it is.

Since you opt'ed for having only OC-offsets in the sheet I need some good guess (which variant of the card model is it) and google to find out what he actual clocking might be, in order to compare it with my situation. Remember some manufacturers are producing the same card model with different bios versions and clock speeds under the same marketing product name. Different cards are easier to distinguish by their part numbers like "GV-N670OC-2GD", but in an extra column for that we might not see much entries. Still  having the absolute clock values in the sheet would be much easier for my purpose.

Thanks for the template!

Some thoughts and suggestions for improvements:
- TDP
 I am not sure how to directly influence TDP and where we read the actual values for the input field.

- Power Consumption
 You should define what to fill in there.
It is hard to compare different PC-Systems and with a simple consumption measurement device we only get the total consumption of the whole PC-System. I suggest to define the Power Consumption as the increase of consumption when cudaminer is working.
PowerConsumption_additionalForMining := PowerConsumption_mining - PowerConsumption_idle

- Frequencies
clock speeds of the graphic cards of the same model differ between manufacturers. It would be easier to evaluate absolute values instead of adjustments to an unknown base.
Some tools show effective memory clock speeds much higher than the real ones which are usually listed as a  part of the vendor information. It should be clear what to insert in the sheet. Personally I am using Firestorm, so  I vote for using the real values

Thanks guys, for the huge improvement!

I did some experiments with the 2013-12-18 version of cudaminer with my puny system:
Windows 8.1 Pro 32-Bit
GTX 650 Ti (1GB Version)
Nvidia Driver Version 331.65
System power consumption (idle): 93 Watts

cudaminer.exe -H 1 -i 0 -C 2 -l <see table>
I played with different -H settings but on my rig -H 1 is the way to go for max. KH/s.

Autotune isn't working very well for me, it always come up with odd settings like 5x20 and 20% less KH/s.

While playing with different launch configs, it seems for my card anything with a total of 128 apples? like 8x16, 16x8 or 4x32 works best.
For my situation NxM=128 and N<M, my card doesn't like N>M very much.

With the new 2013-12-18 version I had to set the Fan Speed to 100%.
With the old 2013-12-10 version 27% was sufficient to keep the temperature below 60° C.
The Power Consumption went up, but we now get more KH/s per Watt with Version 2013-12-18. Great Job!
A bit strange, K8x24 with the new version gives wild alternating readings on my Watt measurement unit.
At any other config in the table the readings were alternating only about +/- 0,5 to 1%.

Is there a way to reduce the power consumption of the graphics card by deactivating of video signal components?
I got only one card, but I am searching for a way to have a energy saving mode optimized for mining, while the system is only mining.
The usual Windows system settings for energy saving regarding the graphics cards are to coarse grained, at least I can't find good ones since we dont want to hibernate or shut down the entire system for 0 KH/s.

Cheers, Oskar.

Well, I am getting old. Since I hadn't found the forum rules at the usual place, it tooked me 20 minutes to find this very informative thread to hopefully help me out of the sandbox.
Very annoying policy...