I think it was 2011 when I first brought that one up with then BFL, still companies make the same stupid mistake today ...
p.s. I finally added tuning to cgminer, options to modify the tuning, and the API stats is full of information about each board ... latest changes are in current git.
I fixed more bugs I copied from chainminer also and found an interesting result the boards return that can be ignored and reduce work checking dramatically.
API summary+stats output of my one BA board:
[Elapsed] => 176001
[MHS av] => 41505.75
[MHS 5s] => 43373.70
[Found Blocks] => 0
[Getworks] => 20828
[Accepted] => 58864
[Rejected] => 3328
[Hardware Errors] => 46211
[Utility] => 20.07
[Discarded] => 21684
[Stale] => 25
[Get Failures] => 15
[Local Work] => 2768847
[Remote Failures] => 3
[Network Blocks] => 350
[Total MH] => 7305039289.1326
[Work Utility] => 579.83
[Difficulty Accepted] => 1619791.28726888
[Difficulty Rejected] => 57802.70362325
[Difficulty Stale] => 352.00000000
[Best Share] => 808573
[Device Hardware%] => 2.6451
[Device Rejected%] => 3.3985
[Pool Rejected%] => 3.4448
[Pool Stale%] => 0.0210
[Last getwork] => 1391604057
[STATS] => 0
[ID] => BaB0
[Elapsed] => 176001
[Calls] => 0
[Wait] => 0.000000
[Max] => 0.000000
[Min] => 99999999.000000
[Version] => 2
[Chips] => 16
[Boards] => 1
[Banks] => 1
[Chips Per Bank] => 0 16 0 0 0
[Missing Chips Per Bank] => 0 0 0 0 0
[Device Elapsed] => 176003
[History Enabled] => true
[Chip History Limit] => 300
[Nonces 0-15] => 117283 112518 111587 107190 109769 113981 106979 106443 107113 112412 106065 106157 114316 106283 104793 104409
[Good 0-15] => 111519 106752 109167 105769 108942 109436 103353 105949 106447 104870 105433 105540 109630 104876 101620 101544
[Bad 0-15] => 5749 5751 2405 1406 812 4530 3611 479 651 7527 617 602 4671 1392 3158 2850
[Conf 0-15] => 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b 0x1b
[Fast 0-15] => 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55
[Spie 0-15] => 14 8 12 8 9 10 12 7 13 14 11 10 83 73 70 58
[Miso 0-15] => 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
[HW% 0-15] => 4.902 5.112 2.156 1.312 0.740 3.975 3.376 0.450 0.608 6.697 0.582 0.567 4.087 1.310 3.014 2.730
[GHs 0-15] => 2.721 2.605 2.664 2.581 2.658 2.671 2.522 2.585 2.598 2.559 2.573 2.575 2.675 2.559 2.480 2.478
[Sum GHs 0-15] => 41.506
[Cont-Bad 0-15] => 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
[Max-Bad 0-15] => 4 5 3 5 3 4 4 4 4 4 4 3 8 6 5 5
[History Good 0-15] => 179 175 227 186 174 195 185 194 170 192 176 184 193 174 167 167
[History Bad 0-15] => 13 18 3 4 0 10 9 0 3 15 1 0 8 0 3 5
[History HW% 0-15] => 6.771 9.326 1.304 2.105 0.000 4.878 4.639 0.000 1.734 7.246 0.565 0.000 3.980 0.000 1.765 2.907
[History GHs 0-15] => 2.600 2.506 3.244 2.693 2.501 2.785 2.641 2.770 2.434 2.751 2.521 2.627 2.775 2.492 2.383 2.383
[Sum History GHs 0-15] => 42.105
[Total History GHs] => 42.105
[Total History HW%] => 3.036
[History Speed 0.0 Dead] => 0
[History Speed 0.8 V.Slow] => 0
[History Speed 1.6 Slow] => 0
[History Speed 2.2 OK] => 0
[History Speed 2.8 Good] => 15
[History Speed >2.8 Fast] => 1
[History Dead] => None
[History V.Slow] => None
[History Dead Boards] => None
[History Dead Chains] => None
[Nonce Offset 0xff800000] => 890671
[Nonce Offset 0x00000000] => 566858
[Nonce Offset 0xffc00000] => 243318
[Discarded E0s] => 2728775
[Tested] => 1747298
[OK] => 1700847
[Total Tests] => 8977596
[Max Tests] => 16
[Avg Tests] => 5.278
[Untested] => 0
[Work Links] => 3676660
[Work Processed Links] => 3613284
[Max Links] => 8
[Max Processed Links] => 7
[Total Work Links] => 6358964
[Avg Links] => 2.162
[Avg Proc Links] => 2.124
[Avg Work Links] => 3.739
[Fail] => 46211
[Fail Total Tests] => 405639
[Fail Avg Tests] => 8.778
[Fail Work Links] => 173878
[Fail Total Work Links] => 173878
[Initial Ignored] => 240
[Ign Total Tests] => 471
[Ign Work Links] => 0
[Ign Total Work Links] => 0
[WFree Total] => 1024
[WFree Count] => 943
[Available Work] => 16
[SPI Work] => 0
[Chip Work] => 65
[SFree Total] => 8
[SFree Count] => 8
[SPI Waiting] => 0
[SPI Sent] => 0
[RFree Total] => 256
[RFree Count] => 256
[Result Count] => 0
[NFree Total] => 102400
[NFree Used] => 3030
[Delay Count] => 170550
[Delay Min] => 0.899001
[Delay Max] => 5.202787
[Delay Bands] => <0.5=0 <0.7=0 <0.9=5828 <1.1=164717 <1.3=2 <1.5=0 <1.7=0 <1.9=0 <2.1=0 <2.3=0 <2.5=0 >=2.7=3
[Send Count] => 170551
[Send Total] => 14938.829633
[Send Avg] => 0.088
[Send Min] => 0.085179
[Send Max] => 0.113610
[Reply Wait] => 160
[Reply Waits] => 5303
[MaxSpeed] => 55
[DefaultSpeed] => 54
[MinSpeed] => 52
[TuneUp] => 1.000000
[TuneDown] => 10.000000
[SPISpeed] => 96000
[SPIDelayuS] => 0
[TransferDelayuS] => 0
[USB Pipe] => 0
[USB Delay] => r0 0.000000 w0 0.000000
[USB tmo] => 0 0
The Paid GH/s there (how much the pool accepts) is 39.5GH/s