Memory/Bus bandwidth estimation (WarpOS/PPC) (c) Karl Churchill 2004

System Info

CPU : 604e [PVR:0x00090204]
CPU : 200.000 MHz
FSB :  66.667 MHz

Fast [cache normal] allocated : 33554432 bytes at 0x08FDF020
Fast [writethrough] allocated : 33554432 bytes at 0x0AFE1020
Chip [noncacheable] allocated :  1048576 bytes at 0x00014020
VRAM [noncacheable] allocated :   614400 bytes at 0xE01E6000

Estimating VRAM access bandwidth

Read  VRAM (64-bit) : 6138.46 KB/s
Read  VRAM (32-bit) : 5598.33 KB/s
Read  VRAM (16-bit) : 2799.46 KB/s
Read  VRAM  (8-bit) : 1402.06 KB/s
Write VRAM (64-bit) : 21029.05 KB/s
Write VRAM (32-bit) : 18442.03 KB/s
Write VRAM (16-bit) : 9200.01 KB/s
Write VRAM  (8-bit) : 4589.43 KB/s

Estimating fast RAM access bandwidth [normal]

Read  FAST  (64-bit) : 114269.74 KB/s
Read  FAST  (32-bit) : 103741.85 KB/s
Read  FAST  (16-bit) : 91112.72 KB/s
Read  FAST   (8-bit) : 75587.48 KB/s
Write FAST  (64-bit) : 72714.37 KB/s
Write FAST  (32-bit) : 72871.86 KB/s
Write FAST  (16-bit) : 72813.17 KB/s
Write FAST   (8-bit) : 74416.04 KB/s

Estimating fast RAM access bandwidth [writethrough]

Read  FAST  (64-bit) : 114371.55 KB/s
Read  FAST  (32-bit) : 103656.26 KB/s
Read  FAST  (16-bit) : 91278.27 KB/s
Read  FAST   (8-bit) : 75577.16 KB/s
Write FAST  (64-bit) : 71922.41 KB/s
Write FAST  (32-bit) : 36111.21 KB/s
Write FAST  (16-bit) : 18126.81 KB/s
Write FAST   (8-bit) : 9077.54 KB/s

Estimating chip RAM access bandwidth

Read  CHIP  (64-bit) : 4954.73 KB/s
Read  CHIP  (32-bit) : 4567.65 KB/s
Read  CHIP  (16-bit) : 2284.30 KB/s
Read  CHIP   (8-bit) : 1144.86 KB/s
Write CHIP  (64-bit) : 6907.00 KB/s
Write CHIP  (32-bit) : 6913.89 KB/s
Write CHIP  (16-bit) : 3458.50 KB/s
Write CHIP   (8-bit) : 1730.39 KB/s

Estimating fast RAM [normal] to fast RAM [normal] bandwidth (non overlapped)

FAST -> FAST (64-bit) : 48699.52 KB/s
FAST -> FAST (32-bit) : 46544.85 KB/s
FAST -> FAST (16-bit) : 34274.49 KB/s
FAST -> FAST  (8-bit) : 20006.29 KB/s

Estimating fast RAM [normal] to fast RAM [normal] bandwidth (overlapped)

FAST -> FAST (64-bit) : 74645.89 KB/s
FAST -> FAST (32-bit) : 74552.57 KB/s
FAST -> FAST (16-bit) : 46488.59 KB/s
FAST -> FAST  (8-bit) : 23694.21 KB/s

Estimating fast RAM [normal] to fast RAM [writethrough] bandwidth

FAST -> FAST (64-bit) : 47136.76 KB/s
FAST -> FAST (32-bit) : 28547.66 KB/s
FAST -> FAST (16-bit) : 15968.47 KB/s
FAST -> FAST  (8-bit) : 8517.28 KB/s

Estimating fast RAM [normal] to VRAM copy bandwidth

FAST -> VRAM (64-bit) : 18010.73 KB/s
FAST -> VRAM (32-bit) : 15781.91 KB/s
FAST -> VRAM (16-bit) : 8462.65 KB/s
FAST -> VRAM  (8-bit) : 4400.76 KB/s

Estimating VRAM to RAM [normal] copy bandwidth

VRAM -> FAST (64-bit) : 5527.04 KB/s
VRAM -> FAST (32-bit) : 4897.75 KB/s
VRAM -> FAST (16-bit) : 2508.16 KB/s
VRAM -> FAST  (8-bit) : 1270.22 KB/s

Estimating VRAM to RAM [writethrough] copy bandwidth

VRAM -> FAST (64-bit) : 5632.13 KB/s
VRAM -> FAST (32-bit) : 4796.77 KB/s
VRAM -> FAST (16-bit) : 2402.67 KB/s
VRAM -> FAST  (8-bit) : 1201.25 KB/s

Estimating FAST [normal] to CHIP copy bandwidth

FAST -> CHIP (64-bit) : 6860.75 KB/s
FAST -> CHIP (32-bit) : 6870.05 KB/s
FAST -> CHIP (16-bit) : 3455.83 KB/s
FAST -> CHIP  (8-bit) : 1730.10 KB/s

Estimating CHIP to FAST [normal] copy bandwidth

CHIP -> FAST (64-bit) : 4536.63 KB/s
CHIP -> FAST (32-bit) : 4229.16 KB/s
CHIP -> FAST (16-bit) : 2196.75 KB/s
CHIP -> FAST  (8-bit) : 1123.59 KB/s

Estimating CHIP to FAST [writethrough] copy bandwidth

CHIP -> FAST (64-bit) : 4945.15 KB/s
CHIP -> FAST (32-bit) : 4559.50 KB/s
CHIP -> FAST (16-bit) : 1968.26 KB/s
CHIP -> FAST  (8-bit) :  980.11 KB/s