I'm at 22 undervolted S1s and I'm having some mixed results with variance as well. I haven't quite figured out if it is just a single or combination of factors; binning variance, manufacture date, capacitors (1200 or 1500), temperature, etc...
What I am sure of is that I have a few units that are very unhappy at 2.8-3.0 ohms and a frequency of 275. I'm currently letting everything run for a few more hours to get more informative results. I'm planning on stepping those units down slightly, but there's a lot of mixed posts about frequency value, chip frequency, and timeout. I've been using 0A81 275 and 45 for months, but with some of the newer ones not operating correctly I'm starting to wonder. I searched and found a massive frequency table:
chip_freq timeout freq_value(s)
37.50 373 0583, 0b87
39.06 358 0c07
40.62 344 0603, 0c87
42.19 331 0d07
43.75 320 0683, 0d87
45.31 308 0e07
46.88 298 0703, 0e87
48.44 289 0f07
50.00 280 0783, 0f87
51.56 271 1007
53.12 263 0803, 1087
54.69 256 1107
56.25 248 0883, 1187
57.81 242 1207
59.38 235 0903, 1287
60.94 229 1307
62.50 224 0983, 1387, 4983, 5387
64.06 218 1407, 5407
65.62 213 0a03, 1487, 4a03, 5487
67.19 208 1507, 5507
68.75 203 0a83, 1587, 4a83, 5587
70.31 199 1607, 5607
71.88 194 0b03, 1687, 4b03, 5687
73.44 190 1707, 5707
75.00 186 0582, 0b83, 0b86, 1787, 4b83, 5787
76.56 182 5807
78.12 179 0c06, 4c03, 5887
79.69 175 5907
81.25 172 0602, 0c86, 4c83, 5987
82.81 169 5a07
84.38 165 0d06, 4d03, 5a87
85.94 162 5b07
87.50 160 0682, 0d86, 4d83, 5b87
89.06 157 5c07
90.62 154 0e06, 4e03, 5c87
92.19 151 5d07
93.75 149 0702, 0e86, 4e83, 5d87
95.31 146 5e07
96.88 144 0f06, 4f03, 5e87
98.44 142 5f07
100.00 140 0782, 0f86, 4f83, 5f87
101.56 137 6007
103.12 135 1006, 5003, 6087
104.69 133 6107
106.25 131 0802, 1086, 5083, 6187
107.81 129 6207
109.38 128 1106, 5103, 6287
110.94 126 6307
112.50 124 0882, 1186, 5183, 6387
114.06 122 6407
115.62 121 1206, 5203, 6487
117.19 119 6507
118.75 117 0902, 1286, 5283, 6587
120.31 116 6607
121.88 114 1306, 5303, 6687
123.44 113 6707
125.00 112 0982, 1386, 4982, 5383, 5386, 6787
128.12 109 1406, 5406
131.25 106 0a02, 1486, 4a02, 5486
134.38 104 1506, 5506
137.50 101 0a82, 1586, 4a82, 5586
140.62 99 1606, 5606
143.75 97 0b02, 1686, 4b02, 5686
146.88 95 1706, 5706
150.00 93 0581, 0b82, 0b85, 1786, 4b82, 5786
153.12 91 5806
156.25 89 0c05, 4c02, 5886
159.38 87 5906
162.50 86 0601, 0c85, 4c82, 5986
165.62 84 5a06
168.75 82 0d05, 4d02, 5a86
171.88 81 5b06
175.00 80 0681, 0d85, 4d82, 5b86
178.12 78 5c06
181.25 77 0e05, 4e02, 5c86
184.38 75 5d06
187.50 74 0701, 0e85, 4e82, 5d86
190.62 73 5e06
193.75 72 0f05, 4f02, 5e86
196.88 71 5f06
200.00 70 0781, 0f85, 4f82, 5f86
203.12 68 6006
206.25 67 1005, 5002, 6086
209.38 66 6106
212.50 65 0801, 1085, 5082, 6186
215.62 64 6206
218.75 64 1105, 5102, 6286
221.88 63 6306
225.00 62 0881, 1185, 5182, 6386
228.12 61 6406
231.25 60 1205, 5202, 6486
234.38 59 6506
237.50 58 0901, 1285, 5282, 6586
240.62 58 6606
243.75 57 1305, 5302, 6686
246.88 56 6706
250.00 56 0981, 1385, 4981, 5382, 5385, 6786
256.25 54 1405, 5405
262.50 53 0a01, 1485, 4a01, 5485
268.75 52 1505, 5505
275.00 50 0a81, 1585, 4a81, 5585
281.25 49 1605, 5605
287.50 48 0b01, 1685, 4b01, 5685
293.75 47 1705, 5705
300.00 46 0580, 0b81, 0b84, 1785, 4b81, 5785
306.25 45 5805
312.50 44 0c04, 4c01, 5885
318.75 43 5905
325.00 43 0600, 0c84, 4c81, 5985
331.25 42 5a05
337.50 41 0d04, 4d01, 5a85
343.75 40 5b05
350.00 40 0680, 0d84, 4d81, 5b85
356.25 39 5c05
362.50 38 0e04, 4e01, 5c85
368.75 37 5d05
375.00 37 0700, 0e84, 4e81, 5d85
381.25 36 5e05
387.50 36 0f04, 4f01, 5e85
393.75 35 5f05
400.00 35 0780, 0f84, 4f81, 5f85
406.25 34 6005
412.50 33 1004, 5001, 6085
418.75 33 6105
425.00 32 0800, 1084, 5081, 6185
431.25 32 6205
437.50 32 1104, 5101, 6285
443.75 31 6305
450.00 31 0880, 1184, 5181, 6385
If you look at the values equal to or less than 275 you'll notice the timeout values are considerably different than the OPs, 45. The default asic-freq vi table also has frequency 250 at a timeout value of 55 vs this table at 56.
: What timeout values are people using for frequencies of 275 and below?
