Comparison of fast loaders

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See Fast loader for a generic description of fast loaders.

64er Speed Test Measurements[edit | edit source]

See Forum64 thread Language German.

All values are relative factors to a standard C64+1541:

  • Format: 75 seconds
  • SAVE/LOAD: 374/407 bytes/sec = about 88/96 blocks per minute
  • SEQ write/read: 349/395 bytes/sec = about 82/93 blocks per minute
  • Data transfer: 455 bytes/sec = about 107 blocks per minute

Legend:

  • ?: not measured properly (yet)
  • -: not supported
  • /: does not make sense on this device
  • X: error
System Format PRG SAVE PRG LOAD SEQ write SEQ read REL create Validate Scratch Data transfer Comment
Jiffy+1541 3.70 2.54 9.84 2.20 5.30 1.14 1.26 1.25 4.20 only 6x PRG LOAD if files not saved using Jiffy
FC3+1541 ? 5.40 9.34 1.00 1.00 1.00 1.00 1.00 1.00
FC3+Jiffy+1541 ? 2.60 10.40 2.20 5.31 1.14 1.26 1.25 4.20
AR7.5+1541 ? 7.00 15.30 1.00 1.00 1.00 1.30 1.30 1.00
AR7.5+Jiffy+1541 ? 7.60 X 2.40 2.37 1.14 1.36 1.30 4.20
1581 2.30 2.15 1.31 2.40 1.34 14.00 11.20 10.00 1.13
Jiffy+1581 2.30 6.37 19.54 8.11 11.18 14.22 11.20 10.00 6.55
AR7.5+1581 ? 11.00 16.00 2.40 1.34 14.00 11.20 10.00 1.13
AT7.5+Jiffy+1581 ? 11.30 16.70 7.89 11.34 14.22 11.40 10.00 6.55
C128DCR+int. 1571 0.98 1.12 0.99 1.13 0.98 1.21 0.49 0.50 1.00
Jiffy+1571 3.40 2.77 14.43 2.35 6.18 1.23 1.49 1.49 4.00
FC3+1571 ? 5.33 9.34 1.00 1.00 1.00 1.00 1.00 1.00
FC3+Jiffy+1571 ? 2.80 10.24 2.35 6.23 1.23 1.49 1.49 4.00
AR7.5+1571 ? 7.00 15.50 1.00 1.00 1.08 1.30 1.30 1.00
AR7.5+Jiffy+1571 ? 7.65 15.49 2.30 6.91 1.34 1.35 1.37 4.00
128D/C64 mode+int.1571+RR ? 0.98 10.50 0.99 0.96 1.05 0.57 0.58 0.98
128D/C64 mode+int.1571+IDE64 1.00 0.98 2.53 0.96 0.97 1.05 0.57 0.58 0.98 ICE64 3.1 IDEDOS 20071202 (0.90 patch 37)
SX 64 + Professional DOS+1541 3.43 13.05 23.09 4.73 4.29 3.83 5.74 3.15 3.58
Magic Formel 2.0 + 1541 2.31? 14.89 16.28 5.70 5.51 1.02 4.02 3.85 0.98
KCS Power Cartr. C64C+1541-II ? 0.99 3.55 0.99 1.01 1.01 1.04 1.04 1.00
Action Power Cartr. 8.1DE ? 6.49 13.66 0.94 0.99 0.97 0.58 0.59 1.00
Action Replay 4.2 Professional ? 8.56 18.14 1.22 1.16 1.27 1.54 1.52 1.19
Jiffy+Jiffy 1581 0.77 5.07 14.77 6.19 9.38 6.74 5.64 5.15 6.37
CBM+Jiffy 1581 0.77 1.96 1.26 2.18 1.29 6.74 5.64 5.11 1.11 No Jiffy on C64 side
FSD+Jiffy 1581 0.77 3.69 14.43 4.22 5.03 6.82 5.64 5.11 4.24
Beast System+CBM 1541 1.11 1.00 11.04 0.99 1.00 1.00 1.04 1.03 1.00
EXOS V3+CBM 1541 1.09 1.00 11.04 0.99 1.00 1.00 1.04 1.04 1.00
128D/C64 mode+internal 1571+EXOS V3 1.08 0.98 10.85 0.98 0.97 1.05 0.57 0.58 0.99
Epyx FastLoad+1541 1.00 1.00 5.14 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
ExpressLoad+1541 1.00 1.00 3.75 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
WarpSpeed 2.0+1541 1.00 7.18 8.23 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
Super Snapshot 4.0+1541 1.00 6.55 12.91 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
Super Snapshot 5+1541 1.00 6.25 14.11 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
BW Turbo Load & Save+1541 1.00 6.05 5.35 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
In full mode. load test doesn't work
Magnum Load+1541 1.00 1.00 6.02 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
Datel Mercury 3+1541 1.00 5.83 5.14 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
MACH5 v1b+1541 1.00 1.00 5.49 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
MACH5 v2a+1541 1.00 1.00 5.49 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
MACH5 v3a+1541 1.00 1.00 2.16 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
FC1+1541 1.00 5.95 5.23 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
FC2+1541 1.00 5.95 5.23 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
FC++1541 1.00 5.95 5.23 1.00 1.00 1.00 1.00 1.00 1.00 Scaled to NTSC TOD clock (x1.2)
JiffyDolphin++sd2iec10.3+d64 10.64 3.66 18.14 4.33 10.99 708 792 21.06 8.23 Scaled to NTSC TOD clock (x1.2)
JiffyDolphin++sd2iec10.3+RAW 894 7.00 22.09 9.47 12.49 45.67 792 207 8.23 Scaled to NTSC TOD clock (x1.2)
SJiffyV1++sd2iec10.3+d64 10.64 3.66 18.14 4.33 11.4 708 792 20.20 8.39 Scaled to NTSC TOD clock (x1.2)
SJiffyV1++sd2iec10.3+RAW 894 7.11 22.09 9.3 13.03 48.83 792 207 8.39 Scaled to NTSC TOD clock (x1.2)
ExosV3NTSC++sd2iec10.3+d64 10.64 1.77 15.55 1.94 1.38 708 792 21.06 1.18 Scaled to NTSC TOD clock (x1.2)
ExosV3NTSC++sd2iec10.3+RAW 894 2.30 18.59 2.57 1.40 48.83 792 207 1.18 Scaled to NTSC TOD clock (x1.2)
EPYX_FastLoad++sd2iec10.3+d64 10.64 1.77 14.8 1.94 1.38 708 792 20.20 1.18 Scaled to NTSC TOD clock (x1.2)
EPYX_FastLoad++sd2iec10.3+RAW 894 2.30 17.52 2.57 1.40 48.83 792 207 1.18 Scaled to NTSC TOD clock (x1.2)
AR6+CBM 1541 ? 8.51 17.89 1.22 1.16 1.27 1.54 1.52 1.19
Jiffy+CBM 1541 1.11 0.93 1.00 0.93 1.00 1.01 1.04 1.03 0.99 No Jiffy on 1541 side
FC3+CBM 1541 ? 5.71 9.07 1.00 1.00 1.00 1.04 1.04 1.00
AR6+Jiffy 1581 ? 8.78 15.12 2.61 1.54 8.14 6.80 6.16 1.33
FSD+AR6+Jiffy 1581 0.78 8.95 15.49 4.94 6.03 8.08 6.80 6.16 5.07
Jiffy+AR6+Jiffy 1581 ? 8.95 15.49 7.29 11.34 8.14 6.80 6.16 7.66
CBM+Jiffy 1541 3.55 1.43 1.18 1.34 1.23 1.11 1.23 1.22 1.21 No Jiffy on C64 side
Jiffy+Jiffy 1541 3.55 2.49 9.62 2.12 5.21 1.11 1.23 1.22 4.14
SJiffy+SJiffyV1 1541 5.36 5.09 14.65 2.12 5.15 1.11 7.48 7.60 4.23 C64PP/PJR
Jiffy+AR6+Jiffy 1541 ? 8.84 18.14 2.78 2.74 1.33 1.59 1.58 4.97
Dolphin 2+Dolphin 2 1541 3.86 14.89 25.92 6.10 9.05 2.70 6.76 5.52 10.29
Dolphin 3+Dolphin 3 1541-II 2.97 14.89 26.46 6.14 9.16 2.72 6.73 4.96 10.43
Dolphin 2+AR6+Dolphin 2 1541 ? 7.21 18.14 6.52 11.18 1.70 4.49 3.79 12.20
Prologic DOS Classic+Prologic 1541 3.94 14.12 28.22 8.87 10.86 4.08 6.23 5.39 9.11
64'erV4+64'erV3 1541 3.34 1.33 6.68 1.37 2.34 1.13 1.08 1.08 3.87
64'erV4+AR6+64'erV3 1541 ? 7.21 18.14 1.70 3.25 1.37 1.56 1.54 4.62
SpeedDos+SpeedDos 1541 3.17 1.34 8.82 1.39 3.04 1.11 1.02 1.02 4.42
C64 SpeedDOS II + SpeedDOS 1541 3.41 1.32 14.94 Scaled to NTSC TOD clock (x1.2)
C64 SpeedDOS + SpeedDOS Expert 1541 3.41 1.32 14.52 Scaled to NTSC TOD clock (x1.2)
SpeedDos+AR6+SpeedDos 1541 ? 8.51 18.41 1.67 3.49 0.95 1.37 1.33 5.26
CBM+sd2iec0.5 2.28 1.55 2.56 1.63 -
Turboload+sd2iec0.5 2.26 12.83 2.56 1.63 -
Jiffy+sd2iec0.5 7.29 21.53 10.00 12.26 -
SJLOAD+sd2iec0.5 - 25.00 - - -
C64+OC118 3.18 1.00 1.01 1.01 1.00 1.10 1.00 1.00 0.99
C64+OC118+Jiffy 3.43 2.50 9.77 2.13 5.17 1.11 1.23 1.22 4.11
Basic Jiffydos Fastload+FD-2000 20.45 13.96 6.24 9.16 6.86 4.71 4.57 7.83
C64+IDE64 V3.4+SCPU support 456.67 635.00 61.43 76.00 590.00 0.00 230.00 40.00
128D/C64 mode+int.1571+AR5 '88 ? 8.62 17.89 1.22 1.16 1.27 1.53 1.52 1.18
CMD HD/1541 Partition 745 37.03 52.92 17.20 19.49 22.69 14.04 19.71 16.36
C64+NeoRAM Ramdrive 0.3 372.5 18.77 18.68 2.54 1.63 393.33 660.00 345.00 8.89
Jiffy+FD2000 745 5.32 15.12 6.37 8.94 8.68 6.11 5.61 7.83
Ramlink 186.25 47.24 105.83 16.86 16.17 51.30 17.84 20.29 11.61
FD2000+original system 745 1.97 1.45 2.20 1.53 8.68 6.11 5.61 1.32
S-Jiffydos C64 + S-Jiffydos OC-168 3.37 5.11 14.77 2.11 5.14 1.11 7.5 7.67 4.07
C64+1541+RR+Speeddos 40 Tracks 2.51 1.32 8.41 1.36 3.04 24.08? 1.54 1.47 4.39
C64+1541+ProfessionalDOS 3.96 14.89 33.42 5.38 5.17 4.17 6.88 3.52 4.31 Userport Version 2/4L2
C64+1541-II+ProfessionalDOS - 16.51 33.42 5.7 5.14 4.7 6.88 3.75 3.91 Userport Version 2/4L2
C128D(p)+Professional DOS 6 - 17.13 35.28 5.51 5.24 3.99 6.11 3.92 4.09 Userport Version
Mafiosino's Loader Language German 19.00 software speeder, measured manually
Most Access II 12.00 software speeder, measured manually
Transwarp 50.00 software speeder, measured manually
BackBit 23.28 1.71 79.38 2.91 2.77 1180 660 345 2.36

Notes[edit | edit source]

  • Cartridges typically do not speed up sequential write/read (actually, this refers to CHRIN/ACPTR/CHROUT/CIOUT kernal routines used mostly by multiload games and applications) but often feature quite fast LOAD routines.
    • Cartridges that use DMA (from own RAM or a parallel floppy cable) are very fast typically.
  • Alternative Kernals such as JiffyDOS or Dolphin DOS speed up all operations.
  • Some cartridges and kernal replacements can be combined.
  • Most 1541 alternatives (1581, MMC2IEC, ...) are faster than the 1541 even with original routines.

Links[edit | edit source]