I get
Jul 25 21:46:41 minera4 cpuminer[2945]: GPU #0: GeForce GTX 750, 2118 khash/s
Jul 25 21:46:41 minera4 cpuminer[2945]: GPU #1: GeForce GTX 750, 2130 khash/s

on a 750 NON-TI, with a bit of overclocking.
No did not alter bios.

Intel® Core™ i7-930, ASUS SABERTOOTH X58, 16Gb DDR3, Win7x64, 335.23.

GPU #0: MSI GeForce GTX 750Ti, N750TI-2GD5/OC, 2Gb
GPU #2: ASUS GeForce GTX 750, GTX750-PHOC-1GD5, 1Gb

MaxCoin Keccak
[2014-07-01 16:16:47] GPU #0: GeForce GTX 750 Ti, 26015 khash/s
[2014-07-01 16:16:48] GPU #2: GeForce GTX 750, 11929 khash/s
[2014-07-01 16:16:48] Total: 37943 khash/s

VTC Adaptive N factor Scrypt
[2014-07-01 16:12:34] GPU #0: GeForce GTX 750 Ti, 134.23 khash/s
[2014-07-01 16:12:35] GPU #2: GeForce GTX 750, 111.58 khash/s
[2014-07-01 16:12:35] Total: 245.81 khash/s

Monero CryptoNight
[2014-07-06 03:02:52] GPU #0: GeForce GTX 750 Ti, 273.49 H/s
[2014-07-06 03:02:52] GPU #2: GeForce GTX 750, 257.16 H/s
[2014-07-06 03:02:52] accepted: 1391/1391 (100.00%), 530.65 H/s (yay!!!)

x11
[2014-07-03 20:08:18] GPU #0: GeForce GTX 750 Ti, 2701 khash/s
[2014-07-03 20:08:18] GPU #2: GeForce GTX 750, 2042 khash/s
[2014-07-03 20:08:18] Total: 4742 khash/s