A1200 030/40mhz faster than A2000 030 50mhz?

desantii · 02 July 2010, 16:18

Just curious. I ahve a 40mhz accelerator in my A1200 and under all benchbarks (Sysinfo and AIBB) it is faster than aGVP 030 50mhz that is on my A2000?
In sysinfo it shows as 8.x MIPS vs the GVP at 7.8 MIPS as in comparison to the A600 (all I acn rememebr now) shows 14.x for the 40mhz and 13.8 for the 50mhz

Any thoughts

thanks

alexh · 02 July 2010, 16:21

The A2000 has 16-bit Chip RAM and the A1200 has 32-bit but CPU benchmarks shouldn't use Chip RAM.

Have you checked that both have caches switched on?

Could the RAM controller on the A1200 accelerator be zero-wait-state and the one on the A2000 have wait-states?

desantii · 02 July 2010, 16:34

Both have caches on, the A2000 one uses GVP ram the other uses standard ram

desantii · 02 July 2010, 17:40

Here is a picture of the systenfo of each, the, faster one is the 40mhz

Jope · 02 July 2010, 18:50

One is running in PAL and the other is in NTSC. Sysinfo's timing loops are tied to the screen's refresh rate to an extent, so they are not comparable unless you use the same screen mode.

desantii · 02 July 2010, 18:53

OK, will run both in NTSC later today

alexh · 02 July 2010, 18:59

How come dburst is switched off on both?

rkauer · 02 July 2010, 19:09

The speed heavily depends on the RAM architecture and how it interfaces with the CPU and with the Amiga chipset.

Apollo accelerators seems faster than Blizzard ones on the A1200 for that exact reason. But Apollo units are less stable than Blizzards.

desantii · 02 July 2010, 20:48

I reran the 50mhz with PAL, no chnage. I also tried witll alla cahes (I guess what is in the pictures is the default)

alexh · 02 July 2010, 22:15

Erm, you were supposed to re-run the 50MHz one in NTSC weren't you? You already ran it in PAL first time round.

DBURST on should make a big difference if the benchmark and the RAM controller support it.

desantii · 02 July 2010, 22:21

Actaully no, the 40mhz one was in PAL and the 50mhz in NTSC so I reran the 50mhz in PAL. Now both are in PAL

I will try the burst tonight

alexh · 03 July 2010, 00:06

It has to be the memory controller then. Perhaps there are some jumpers on the board?

What position is jumper J12 in? Open or closed?

desantii · 03 July 2010, 04:02

JP12 was open, if I close I get a minor boost but then 8mb of fast ram gets mapped as ZorroII ram

What is the normal speed of an 030 50mhz? Maybe the 40mhz one is too fast? BTW, DBURST On has no effect on speed

Zetr0 · 03 July 2010, 05:38

@desantii

rough 030 speeds on an A1200 (SYSINFO) (non-GVP / based on 72Pin Memory Controllers)

28Mhz = 5.8 MIPS (M-Tec 1230 Viper)
33MHz = 6.4 MIPS (Apollo 030Mk3)
40Mhz = 7.9 MIPS (Apollo 030Mk3)
50Mhz = 9.1 MIPS (Blizzard Mk4)

Now, (rough from memory) 8MB Fast Upgrades (Again SYSINFO)

2.5 MIPS = Hawk 8MB Board(s) (lots of rebadged cards use this reference board)
2.8 MIPS = E1208 (Elbox)*
2.4 MIPS = DKB1202
2.3 MIPS= PC1204

*very fussy with the memory - impressive though the E1208 was I found it at times a little unstable with known good ram, although its really one of those cards that - once you found the memory that makes it happy, leave it with it!!!!

MIPS only tell half the story with Amiga accelerators, perhaps the next biggest thing for the Amiga is FAST to CHIP writes and CHIP to FAST writes

rkauer · 03 July 2010, 06:07

MIPS: Meaningless Indicator of Processor Speed

8bitbubsy · 03 July 2010, 10:15

But on a related note, is a 040 40MHz much faster than 040 25MHz?
My Apollo 1240 (XC68040RC40) is underclocked from 40MHz to 25MHz because I have no heatsink, but will I be very happy if I go back to 40MHz and get a heatsink for it? There's literally no room for one, so I need to do some hackery to get a heatsink fitted. Having a heatpad + copper pipe leading to a big heatsink where the floppy drive used to be, has always been a dream I have at nights.

Photon · 03 July 2010, 11:06

A wet dream?

8bitbubsy · 03 July 2010, 11:58

Quote:

Originally Posted by Photon

A wet dream?

Yes!

Imagine 040 40MHz 100% stable, it's a dream to me. (I have 2x 060 CPUs but none of them works in my Apollo 1240, not even the other MC68040RC33 I have work).... Only this old XC68040RC40 oven works, but it freeze all the time because of no heatsink.
#%"%#%!

alexh · 03 July 2010, 12:03

Quote:

Originally Posted by Zetr0

the next biggest thing for the Amiga is FAST to CHIP writes and CHIP to FAST writes

Please explain. We talking about a DMA to / from Chip RAM to Zorro II Fast RAM? Lots (the majority?) of accelerators don't have such capability. Or are we talking about copies between FAST & CHIP RAM using the CPU?

Zetr0 · 03 July 2010, 13:05

@alexh

FAST & CHIP read/write using the CPU....

02 July 2010, 16:18	#1
desantii Registered User Join Date: Oct 2009 Location: Oswego, IL Posts: 125	A1200 030/40mhz faster than A2000 030 50mhz? Just curious. I ahve a 40mhz accelerator in my A1200 and under all benchbarks (Sysinfo and AIBB) it is faster than aGVP 030 50mhz that is on my A2000? In sysinfo it shows as 8.x MIPS vs the GVP at 7.8 MIPS as in comparison to the A600 (all I acn rememebr now) shows 14.x for the 40mhz and 13.8 for the 50mhz Any thoughts thanks

03 July 2010, 05:38	#14
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	@desantii rough 030 speeds on an A1200 (SYSINFO) (non-GVP / based on 72Pin Memory Controllers) 28Mhz = 5.8 MIPS (M-Tec 1230 Viper) 33MHz = 6.4 MIPS (Apollo 030Mk3) 40Mhz = 7.9 MIPS (Apollo 030Mk3) 50Mhz = 9.1 MIPS (Blizzard Mk4) Now, (rough from memory) 8MB Fast Upgrades (Again SYSINFO) 2.5 MIPS = Hawk 8MB Board(s) (lots of rebadged cards use this reference board) 2.8 MIPS = E1208 (Elbox)* 2.4 MIPS = DKB1202 2.3 MIPS= PC1204 very fussy with the memory - impressive though the E1208 was I found it at times a little unstable with known good ram, although its really one of those cards that - once you found the memory that makes it happy, leave it with it!!!! MIPS* only tell half the story with Amiga accelerators, perhaps the next biggest thing for the Amiga is FAST to CHIP writes and CHIP to FAST writes Last edited by Zetr0; 03 July 2010 at 05:52.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Upgrading GVP A530 from EC030 @ 40MHz to Full 030 @ 50MHz	Mogsy	Hardware mods	37	08 January 2013 09:16
For Sale: A1200 40mhz 030 accelerator with 32mb	PowerPie5000	MarketPlace	15	20 May 2010 15:58
GVP-M Typhoon A1200 030 40MHz Accelerator	kipper2k	support.Hardware	18	08 May 2010 12:27
Rain TBL - A1200 + 030 50Mhz	NovaCoder	support.Demos	18	22 January 2009 17:26
GVP G-force 030 board for A2000-problem switching between 030 and 68k	Unregistered	support.Hardware	5	19 August 2004 10:04

02 July 2010, 16:21	#2
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,331	The A2000 has 16-bit Chip RAM and the A1200 has 32-bit but CPU benchmarks shouldn't use Chip RAM. Have you checked that both have caches switched on? Could the RAM controller on the A1200 accelerator be zero-wait-state and the one on the A2000 have wait-states?

02 July 2010, 16:34	#3
desantii Registered User Join Date: Oct 2009 Location: Oswego, IL Posts: 125	Both have caches on, the A2000 one uses GVP ram the other uses standard ram

02 July 2010, 17:40	#4
desantii Registered User Join Date: Oct 2009 Location: Oswego, IL Posts: 125	Here is a picture of the systenfo of each, the, faster one is the 40mhz

02 July 2010, 18:50	#5
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	One is running in PAL and the other is in NTSC. Sysinfo's timing loops are tied to the screen's refresh rate to an extent, so they are not comparable unless you use the same screen mode.

02 July 2010, 18:53	#6
desantii Registered User Join Date: Oct 2009 Location: Oswego, IL Posts: 125	OK, will run both in NTSC later today

02 July 2010, 18:59	#7
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,331	How come dburst is switched off on both?

02 July 2010, 19:09	#8
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	The speed heavily depends on the RAM architecture and how it interfaces with the CPU and with the Amiga chipset. Apollo accelerators seems faster than Blizzard ones on the A1200 for that exact reason. But Apollo units are less stable than Blizzards.

02 July 2010, 20:48	#9
desantii Registered User Join Date: Oct 2009 Location: Oswego, IL Posts: 125	I reran the 50mhz with PAL, no chnage. I also tried witll alla cahes (I guess what is in the pictures is the default)

02 July 2010, 22:15	#10
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,331	Erm, you were supposed to re-run the 50MHz one in NTSC weren't you? You already ran it in PAL first time round. DBURST on should make a big difference if the benchmark and the RAM controller support it.

02 July 2010, 22:21	#11
desantii Registered User Join Date: Oct 2009 Location: Oswego, IL Posts: 125	Actaully no, the 40mhz one was in PAL and the 50mhz in NTSC so I reran the 50mhz in PAL. Now both are in PAL I will try the burst tonight

03 July 2010, 00:06	#12
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,331	It has to be the memory controller then. Perhaps there are some jumpers on the board? What position is jumper J12 in? Open or closed?

03 July 2010, 04:02	#13
desantii Registered User Join Date: Oct 2009 Location: Oswego, IL Posts: 125	JP12 was open, if I close I get a minor boost but then 8mb of fast ram gets mapped as ZorroII ram What is the normal speed of an 030 50mhz? Maybe the 40mhz one is too fast? BTW, DBURST On has no effect on speed

03 July 2010, 06:07	#15
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	MIPS: Meaningless Indicator of Processor Speed

03 July 2010, 10:15	#16
8bitbubsy Registered User Join Date: Sep 2009 Location: Norway Posts: 1,709	But on a related note, is a 040 40MHz much faster than 040 25MHz? My Apollo 1240 (XC68040RC40) is underclocked from 40MHz to 25MHz because I have no heatsink, but will I be very happy if I go back to 40MHz and get a heatsink for it? There's literally no room for one, so I need to do some hackery to get a heatsink fitted. Having a heatpad + copper pipe leading to a big heatsink where the floppy drive used to be, has always been a dream I have at nights.

03 July 2010, 11:06	#17
Photon Moderator Join Date: Nov 2004 Location: Eksjö / Sweden Posts: 5,602	A wet dream?

03 July 2010, 13:05	#20
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	@alexh FAST & CHIP read/write using the CPU....

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)