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 0x08FE0020
Fast [writethrough] allocated : 33554432 bytes at 0x0AFE2020
Chip [noncacheable] allocated :  1048576 bytes at 0x00014020
VRAM [noncacheable] allocated :   614400 bytes at 0xE01E6000

Estimating VRAM access bandwidth

Read  VRAM (64-bit) : 6127.05 KB/s
Read  VRAM (32-bit) : 5596.75 KB/s
Read  VRAM (16-bit) : 2797.04 KB/s
Read  VRAM  (8-bit) : 1401.10 KB/s
Write VRAM (64-bit) : 21108.65 KB/s
Write VRAM (32-bit) : 18612.19 KB/s
Write VRAM (16-bit) : 9266.99 KB/s
Write VRAM  (8-bit) : 4628.38 KB/s

Estimating fast RAM access bandwidth [normal]

Read  FAST  (64-bit) : 114171.20 KB/s
Read  FAST  (32-bit) : 103580.36 KB/s
Read  FAST  (16-bit) : 91010.91 KB/s
Read  FAST   (8-bit) : 75530.83 KB/s
Write FAST  (64-bit) : 72669.52 KB/s
Write FAST  (32-bit) : 72710.68 KB/s
Write FAST  (16-bit) : 72765.28 KB/s
Write FAST   (8-bit) : 74493.02 KB/s

Estimating fast RAM access bandwidth [writethrough]

Read  FAST  (64-bit) : 114196.36 KB/s
Read  FAST  (32-bit) : 103652.17 KB/s
Read  FAST  (16-bit) : 90895.85 KB/s
Read  FAST   (8-bit) : 75496.11 KB/s
Write FAST  (64-bit) : 71890.89 KB/s
Write FAST  (32-bit) : 36070.73 KB/s
Write FAST  (16-bit) : 18117.00 KB/s
Write FAST   (8-bit) : 9081.02 KB/s

Estimating chip RAM access bandwidth

Read  CHIP  (64-bit) : 4926.37 KB/s
Read  CHIP  (32-bit) : 4928.16 KB/s
Read  CHIP  (16-bit) : 4914.91 KB/s
Read  CHIP   (8-bit) : 4755.41 KB/s
Write CHIP  (64-bit) : 3033.26 KB/s
Write CHIP  (32-bit) : 3033.77 KB/s
Write CHIP  (16-bit) : 3034.63 KB/s
Write CHIP   (8-bit) : 3032.12 KB/s

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

FAST -> FAST (64-bit) : 48683.76 KB/s
FAST -> FAST (32-bit) : 46463.18 KB/s
FAST -> FAST (16-bit) : 34294.19 KB/s
FAST -> FAST  (8-bit) : 20002.14 KB/s

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

FAST -> FAST (64-bit) : 74663.26 KB/s
FAST -> FAST (32-bit) : 74544.84 KB/s
FAST -> FAST (16-bit) : 46473.52 KB/s
FAST -> FAST  (8-bit) : 23703.18 KB/s

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

FAST -> FAST (64-bit) : 47115.49 KB/s
FAST -> FAST (32-bit) : 28544.88 KB/s
FAST -> FAST (16-bit) : 15955.95 KB/s
FAST -> FAST  (8-bit) : 8515.26 KB/s

Estimating fast RAM [normal] to VRAM copy bandwidth

FAST -> VRAM (64-bit) : 18001.55 KB/s
FAST -> VRAM (32-bit) : 15827.15 KB/s
FAST -> VRAM (16-bit) : 8488.16 KB/s
FAST -> VRAM  (8-bit) : 4424.25 KB/s

Estimating VRAM to RAM [normal] copy bandwidth

VRAM -> FAST (64-bit) : 5522.20 KB/s
VRAM -> FAST (32-bit) : 4894.47 KB/s
VRAM -> FAST (16-bit) : 2508.85 KB/s
VRAM -> FAST  (8-bit) : 1268.91 KB/s

Estimating VRAM to RAM [writethrough] copy bandwidth

VRAM -> FAST (64-bit) : 5623.96 KB/s
VRAM -> FAST (32-bit) : 4799.40 KB/s
VRAM -> FAST (16-bit) : 2405.16 KB/s
VRAM -> FAST  (8-bit) : 1201.93 KB/s

Estimating FAST [normal] to CHIP copy bandwidth

FAST -> CHIP (64-bit) : 2911.40 KB/s
FAST -> CHIP (32-bit) : 2952.07 KB/s
FAST -> CHIP (16-bit) : 2946.82 KB/s
FAST -> CHIP  (8-bit) : 2937.64 KB/s

Estimating CHIP to FAST [normal] copy bandwidth

CHIP -> FAST (64-bit) : 4601.96 KB/s
CHIP -> FAST (32-bit) : 4660.96 KB/s
CHIP -> FAST (16-bit) : 4544.66 KB/s
CHIP -> FAST  (8-bit) : 4050.84 KB/s

Estimating CHIP to FAST [writethrough] copy bandwidth

CHIP -> FAST (64-bit) : 4663.96 KB/s
CHIP -> FAST (32-bit) : 4321.10 KB/s
CHIP -> FAST (16-bit) : 3889.16 KB/s
CHIP -> FAST  (8-bit) : 3204.83 KB/s