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 0x0900D020
Fast [writethrough] allocated : 33554432 bytes at 0x0B00F020
Chip [noncacheable] allocated :  1048576 bytes at 0x00013020
VRAM [noncacheable] allocated :   614400 bytes at 0xE00EA600


Estimating fast RAM access bandwidth [normal]

Read  FAST  (64-bit) : 114090.32 KB/s
Read  FAST  (32-bit) : 103676.37 KB/s
Read  FAST  (16-bit) : 91007.95 KB/s
Read  FAST   (8-bit) : 75593.29 KB/s
Write FAST  (64-bit) : 72617.95 KB/s
Write FAST  (32-bit) : 72878.05 KB/s
Write FAST  (16-bit) : 72873.17 KB/s
Write FAST   (8-bit) : 74529.46 KB/s

Estimating fast RAM access bandwidth [writethrough]

Read  FAST  (64-bit) : 114218.01 KB/s
Read  FAST  (32-bit) : 103712.71 KB/s
Read  FAST  (16-bit) : 90995.91 KB/s
Read  FAST   (8-bit) : 75648.23 KB/s
Write FAST  (64-bit) : 71897.61 KB/s
Write FAST  (32-bit) : 36108.25 KB/s
Write FAST  (16-bit) : 18103.02 KB/s
Write FAST   (8-bit) : 9059.02 KB/s

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

FAST -> FAST (64-bit) : 48673.73 KB/s
FAST -> FAST (32-bit) : 46487.29 KB/s
FAST -> FAST (16-bit) : 34264.72 KB/s
FAST -> FAST  (8-bit) : 20014.02 KB/s

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

FAST -> FAST (64-bit) : 74999.45 KB/s
FAST -> FAST (32-bit) : 74479.91 KB/s
FAST -> FAST (16-bit) : 46512.46 KB/s
FAST -> FAST  (8-bit) : 23691.14 KB/s

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

FAST -> FAST (64-bit) : 47061.74 KB/s
FAST -> FAST (32-bit) : 28552.11 KB/s
FAST -> FAST (16-bit) : 15963.12 KB/s
FAST -> FAST  (8-bit) : 8512.83 KB/s

Estimating fast RAM [normal] to VRAM copy bandwidth

FAST -> VRAM (64-bit) : 17997.73 KB/s
FAST -> VRAM (32-bit) : 15844.91 KB/s
FAST -> VRAM (16-bit) : 8430.81 KB/s
FAST -> VRAM  (8-bit) : 4373.64 KB/s

Estimating VRAM to RAM [normal] copy bandwidth

VRAM -> FAST (64-bit) : 5441.08 KB/s
VRAM -> FAST (32-bit) : 4792.64 KB/s
VRAM -> FAST (16-bit) : 2450.05 KB/s
VRAM -> FAST  (8-bit) : 1237.32 KB/s

Estimating VRAM to RAM [writethrough] copy bandwidth

VRAM -> FAST (64-bit) : 5530.43 KB/s
VRAM -> FAST (32-bit) : 4687.85 KB/s
VRAM -> FAST (16-bit) : 2347.85 KB/s
VRAM -> FAST  (8-bit) : 1173.73 KB/s

Estimating FAST [normal] to CHIP copy bandwidth

FAST -> CHIP (64-bit) : 2909.03 KB/s
FAST -> CHIP (32-bit) : 2949.96 KB/s
FAST -> CHIP (16-bit) : 2946.30 KB/s
FAST -> CHIP  (8-bit) : 2933.02 KB/s

Estimating CHIP to FAST [normal] copy bandwidth

CHIP -> FAST (64-bit) : 4594.97 KB/s
CHIP -> FAST (32-bit) : 4664.03 KB/s
CHIP -> FAST (16-bit) : 4536.24 KB/s
CHIP -> FAST  (8-bit) : 4053.75 KB/s

Estimating CHIP to FAST [writethrough] copy bandwidth

CHIP -> FAST (64-bit) : 4659.54 KB/s
CHIP -> FAST (32-bit) : 4317.22 KB/s
CHIP -> FAST (16-bit) : 3888.59 KB/s
CHIP -> FAST  (8-bit) : 3203.57 KB/s