Ahh, I have no equipment to measure. It is running stock voltage 1.125 and with std tdp bios mod to 65.5W (http://cryptomining-blog.com/1014-how-to-increase-the-geforce-gtx-750-ti-power-target-limit/) gpu-z is showing from 50 to 66% TDP.
The card has no additional power connector and is powered from my old mobo pci-ex 1.1 port.

Thanx for the hint. In my case with only 1gb of vid mem I can set max -i 23.3, it gives >900mb mem usage. But performance drops comparing to default -i 23 with >700mb. So I try to decrease it more to -i 22.8 with 630mb mem usage and it seems I'm getting slightly better hashrate now ...

UPD: best with -i 22.9 5975 mhs

I don't no why but now my poor gtx 750 can handle 1510/1574 engine/mem. It is 30 mhz engine clock increase from previous oc record. And it is stable! Maybe it is a latest nvidia driver. Or just vacuum cleaning my psu that helps ))
Now with latest sp_ commits I got 5960mhs quark )))

duplicate share dirty trick. Let's ban him

Just for fun: managed to run it on my gtx 750.
It gives 650 khs instead of 880khs with sp_'s ccminer. Not bad but cpu usage is huge.

In order to make it work I needed to change long long constants in Lyra2cl to unsigned long as long long is not supported in nvidia opencl

__constant static const sph_u64 blake2b_IV[8] =
{
  0x6a09e667f3bcc908UL, 0xbb67ae8584caa73bUL,
  0x3c6ef372fe94f82bUL, 0xa54ff53a5f1d36f1UL,
  0x510e527fade682d1UL, 0x9b05688c2b3e6c1fUL,
  0x1f83d9abfb41bd6bUL, 0x5be0cd19137e2179UL
};

Then it was an error in keccak1600.cl with

inline void keccak_block(ulong *s) {

I added static
inline static void keccak_block(ulong *s) {

and the problems seems to vanish.

Then it was an error with 2d array init skein256.cl

__constant static const ulong ROT256[8][4] = {
   46, 36, 19, 37,
   33, 27, 14, 42,
   17, 49, 36, 39,
   44, 9, 54, 56,
   39, 30, 34, 24,
   13, 50, 10, 17,
   25, 29, 39, 43,
   8, 35, 56, 22,
};

I've added more {} to form this

__constant static const ulong ROT256[8][4] = {
   {46, 36, 19, 37},
   {33, 27, 14, 42},
   {17, 49, 36, 39},
   {44, 9, 54, 56},
   {39, 30, 34, 24},
   {13, 50, 10, 17},
   {25, 29, 39, 43},
   {8, 35, 56, 22}
};

And it finally got compiled.
It works and receives "accepted" from the pool )))

I used "intensity" : "14",   "worksize" : "512",  "gpu-threads" : "1" to run ...
gpu_z shows 100% load for gpu engine and memory, the same is with ccminer )))

Very nice! Can't wait to try it. I was a little bit bored with all this offtop discussions about pools and markets, so your post is a breath of fresh air

Try "start /realtime ccminer.exe --cpu-priority 5"

>> I stand corrected. I couldn't get over 900K on a 980
My junior gtx750 can do 890khs lyra with sp_'s #50 heavily oc'ed to 1480/1575 cpu/mem

It's not a bug. It was implemented in such way by sp_. He tries to fix sum bugs in -g mode with this trick ... but for now -g mode has no pros.
sp_ still giving advice to run with -g in solo-mining mode ... but ...

I think this problem exists under linux only. On windows you have such third party tools as nvidia inspector that can change a lot in command line.

But flashing 60%TDP bios will not raise real power consumption. You just make safety wall to be higher ...

Without bios TDP mode you won't gain from overclocking due to some kind of throttling on heavy algos (scrypt, quark). Maybe under linux this behavior is not implemented in drivers ... i don't know ...

Also you need an option to set fan speed higher then default when overclocking. Default fan control rule makes card to go over 50C degrees under load (in my case). This is not good.

I think you are not right. When you change TDP in bios you just prevent card of being throttled. The actual wattage doesn't depend on bios set TDP but only on algo.
My GTX750 went in economy mode without any overclocking on heavy algos when it was with default TDP in bios. In economy mode performance is degrading.
So changing TDP in bios helps you to prevent throttling and leaves space for further overclock. The dark side is possible card burn if it is n't designed to work with such wattage for long time ...

Users report more then 16mhs on 290x with alt free but non-public miner ...

it does include scrypt and even sha256 You can try some litecoin or bitcoin solo mining

nist5 is kinda slow (((

-g hurts performance almost for everyone except sp_
-i 22 is less aggressive then default intensity. I think it was used by sp_ in -g mode to lower memory requirements.
I tried to increase -i in single threaded mode but it doesn't benefit comparing to default ...

In default mode #49 is better then #50 in quark for me (gtx750).
For other algos #50 is the best.

avx option is applied in 64bit mode and if your cpu doesn't support it then ...