Ufasoft is only miner that doesn't crash display driver or crash itself
around 120MHash overclocked, uses about 100watts additional power from idle
one of the miner's showed 127Mhash, forget which one maybe Phoenix, but all these crash after closing:
GUIMINER with phoenix
GUIMINER with OpenCL
GUIMINER with CUDA (rpcminer)
Phoenix 1.7.5 program freezes after a few seconds
Phoenix 2 - 123Mhash, freezes on close
Diablo Miner - 121Mhash with 98% GPU usage. throws a bunch of Invalid solution errors and says hardware error
CGMiner program just crashes before hashing (don't think supports CUDA)
[2012-09-15 06:17:35] CL Platform 0 vendor: NVIDIA Corporation
[2012-09-15 06:17:35] CL Platform 0 name: NVIDIA CUDA
[2012-09-15 06:17:35] CL Platform 0 version: OpenCL 1.1 CUDA 5.0.1
[2012-09-15 06:17:35] Platform 0 devices: 1
[2012-09-15 06:17:35] 0 GeForce GTX 470
[2012-09-15 06:17:35] 1 GPU devices max detected
--------------------------------------------------------------------------------
(5s):103.1 (avg):103.1 Mh/s | Q:5 A:3 R:0 HW:0 E:60% U:2.2/m
TQ: 3 ST: 3 SS: 0 DW: 0 NB: 1 LW: 206 GF: 0 RF: 0
Connected to http://pool.coinlab.com:8332 with LP as user protected_mofo
Block: 0000042cae5e4ef6ad08463f1ed49ea7... Started: [06:19:06]
--------------------------------------------------------------------------------
[P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
GPU 0: | 103.1/103.1Mh/s | A:3 R:0 HW:0 U:2.24/m I: 4
--------------------------------------------------------------------------------
[2012-09-15 06:19:06] Started cgminer 2.6.1
[2012-09-15 06:19:06] Probing for an alive pool
[2012-09-15 06:19:06] Long-polling activated for http://pool.coinlab.com:8332/listenChannel
[2012-09-15 06:19:06] Pool 0 http://pool.coinlab.com:8332 alive
[2012-09-15 06:19:36] Accepted 60cc9cf3.9151d8f4 GPU 0
[2012-09-15 06:19:52] Accepted 0d651d91.13f970de GPU 0
[2012-09-15 06:20:22] Accepted 982b0d2f.a7862ba9 GPU 0
With overclocking I can go as higher as 150Mh/s.
That being said, there is no point in mining with an Nvidia card, except maybe if you have free electricity or plan to mine at CoinLab.