size_t ipt = (1024 / lg + (1024 % lg > 0));
    size_t bufsize = 128 * ipt * tc;

    size_t ipt = (1024 / 4 + (1024 % 4 > 0));
    size_t bufsize = 128 * ipt * 51200;
16384
32768
131072
43818.66
42564.865
43776
63360
62720
113408
42203
42240
14216
13896
1863319552
1039138816

[01:51:34] Maximum buffer memory device 0 supports says 1829765120
[01:51:34] Your scrypt settings come to 2055208960
1829765120
1828716544
1865416704
1828716544
1027604480

max / 131072 = x
15680
13960
13734

128 * 256 * tc = bytes
2055208960
max / 32768 = x
62720

<Soul_keeper> 4294967295 = 7 + (X-1)*X + (Y-1)*Y*X
<Soul_keeper> better way to write it
<Soul_keeper> need to solve for X  for values of Y  2^1 to 2^20
<Soul_keeper> just want the equation rearranged so I can plug in Y values and get results
<Soul_keeper> X = 0.5 * (sqrt(85630649313) - 261631);   something like that
<Soul_keeper> for Y = 512
15498

Y = 1024

4294967295 = 7 + (X-1)*X + (1023)*1024*X
4294967295 = 7 + (X-1)*X +1047552*X
X = 0.5 * (sqrt(85630649313) - 1047552);
4084