g77 0.5.18 and gcc 2.7.2.1 with djgpp 2.01 & g77 0.5.19 with emx
| compiler | g77 0.5.18 | gcc 2.7.2.1 | g77 0.5.19 |
| OS | Win32 | with emx Dos-extender |
| source | original | FOREST | original | FOREST | original | FOREST | KAP |
| switch | -o3 | see below | none | -O |
| ref.time = DAT50 |
|---|
| Compaq 386-s/16 + 487SLX | | 5138 | 2183 | 2155 | 2030 |
| AST Bravo 3/33S + 487SLX | 1422 | 1360 | | | 1991 | 1064 | 1021 | 948 |
| Goupil G5 386/20 |
| -/- & Cx486DRx2 + Cx387+ | 920 | 876 |
| -/- & Cx486DRx2 + 38700 | 893 | 860 |
| Compaq 386/25 | fpu required |
| -/- & Cx486DRx2 + 4C87DLC | | 1210 | 677 | 645 | 618 |
| -/- & Cx486DRx2 + Cx387+ | 779 | 765 | 776 | 743 | 1122 | 599 | 573 | 546 |
| -/- & Cx486DRx2 + 38700 | 701 | 706 | 674 | 663 | 1076 | 580 | 563 | 532 |
| NexGen Nx586 (60MHz, 256K) | fpu required |
| Compaq Portable 486c/33 | 297 | 290 |
| ref.time = DAT999 |
|---|
| AST Bravo 3/33S + 487SLX | | | 60289 | 58257 | 105958 | 56371 | 54412 | 50559 |
| DECpc 425SLC/e | 20669 | 20178 | 19920 | 19561 | | 17889 | 17214 | |
| Compaq Portable 486c/33 & DX4 | | | 5818 | 5555 |
| Asus 486SV2GX4 & DX2/66 | 7745 | 7672 |
| DECpc XL 466D2 | | | 7211 | 7032 | 11537 | 6454 | 6323 | 5841 |
| -/- & DX4 | 4990 | 4868 | 4846 | 4585 |
| -/- & AmdDX4 | 7383 | 7204 |
| -/- & Am5x86/100 | 4778 | 4726 |
| -/- & Cx5x86/100 | 4232 | 4093 | 4889 | 4687 | 8312 | 3859 | 3707 | 3430 |
| Asus P55TVP4 & Amd K5/66 | 4191 | 4180 |
| Asus P55TVP4 & Amd K5/100 | 2869 | 2840 | | | 4227 | 2731 | 2788 | 2416 |
| DEC Celebris 590 | 2364 | 2309 | 2608 | 2458 | 4227 | 2184 | 2150 | 1910 |
| Abit SM5 & P54/100 | | 1862 | 1832 | 1614 |
| Asus P55TVP4 & P54/100 | 2020 | 1921 | 2052 | 1924 | 3486 | 1947 | 1909 | |
| GigaByte GA586 & P54/100 | 1964 | 1951 | 2697 | 2583 |
| OPTi PB586 & P54/100 | 2247 | 2220 | 2464 | 2447 |
| DEC Celebris 5100 | 2175 | 2108 | | | 3812 | 1966 | 1936 | 1721 |
| Tadpole P1000 | 2083 | 2066 | 2244 | 2130 |
| UMC 8890 & P54/120 | 2032 | 1924 | 2596 | 2186 |
| Asus P55TVP4 & P54/120 | 1669 | 1651 | 1759 | 1696 | 2974 | 1598 | 1569 | |
| Compaq Armada 4120 | | | 1952 | 1839 |
| DEC Celebris 5120 | 1728 | 1716 | 1842 | 1765 |
| Asus P55TVP4 & Cx6x86/133 | 2358 | 2256 |
| | 3456 | 1666 | 1637 | 1456
| | DEC Celebris 5133 | 1702 | 1697 |
| HP Vectra 5133 | 1575 | 1521 | 1612 | 1527 |
| DEC Celebris 5150 | 1615 | 1589 | 1771 | 1688 | 3239 | 1620 | 1551 | xxxx |
| Dell OptiPlex GXi 5166M (P55C/166) | 1143 | 1136 | 1177 | 11662117 | 1156 | 1132 | 1033 |
| Dell OptiPlex GXi 5200M (P55C/200) | 974 | 980 | 1046 | 994 | 1874 | 964 | 957 | 871 |
| Asus XP6NP5 & P6/150 | | | | 1147 |
| Compaq 4000/6180 (P6/185) | 992 | 978 | 995 | 972 |
| Asus TX97-E & Cx6x86MX/166 | 1623 | 1587 | 1473 | 1382 |
|
| Asus TX97-E & Amd K6/200 | | | 1000 | 983 | 1764 | 1007 | 1023 | |
| Abit AX-5 & K6/210 | 1014 | 1010 | 971 | 952 | 1626 | 914 | 932 | 850 |
| Dell OptiPlex GXa ... (Pentium2/233) | 626 | 635 | 654 | 640 |
| ref.time = DAT10K |
|---|
| Asus P55TVP4 & Amd K5/100 | 26415 | 26198 |
| DEC Celebris 5120 | | | 16917 | 16122 |
| DEC Celebris 5150 | 14500 | 14505 | | | 30262 | 14952 | 14403 | 12384 |
| Compaq Proliant 3000R (Pentium2/300) | 4716 | 4830 |