68882 fpu from China

redblade · 28 May 2018, 00:19

Hi.

I am looking at buying a 68882 fpu and a crystal for my accelerator. Has any one had any experience with buying them from China/Hong Kong?? They appear very cheap on ebay and some with free international posting (Under $10NZD £5.21).

Thanks

chue · 28 May 2018, 01:11

I bought five of the surface mount 68882's from here:

https://www.ebay.com/itm/1pcs-MC6888...item3cc6210e1d

The first one worked, and I have not tested the others.

redblade · 29 May 2018, 02:11

Thanks chue. It makes sense to buy more than one if they are that cheap

. Do you have a source for crystals?

chue · 29 May 2018, 03:51

For older electronic components, I usually buy from highly rated sellers on Ebay. If pricing is cheap enough I figure it is ok to risk it.

I usually buy more than one of each component to reduce the likelihood of getting a bad one. That and my soldering ability is less than stellar

snoopy77 · 29 May 2018, 07:52

Quote:

Originally Posted by redblade

Hi.

I am looking at buying a 68882 fpu and a crystal for my accelerator. Has any one had any experience with buying them from China/Hong Kong?? They appear very cheap on ebay and some with free international posting (Under $10NZD £5.21).

Thanks

Not sure about the FPU quality, but shipping from China is very cheap because of international postage agreements, it is basically a subsidy for China and many other countries.

Marchie · 30 May 2018, 16:56

I bought from these guys and didn't have any problems. Recommended to some friends and they had a positive experience also.

drHirudo · Yesterday, 15:03

I bought two different incarnations of 68882 from Aliexpress.
The 40 MHz seems to be from Motorola and the other has some other company logo (33 MHz version). See attached picture.

I was told that these are laser engraved fakes, but both of them were recognized when I placed them in my 68030 based Macintosh Performa 450 in the FPU slot. Not sure what software to use to test them on MacOS 7, but they are recognized and listed as 68882 in MacEnvy. Will they work on Viper 1230? Do I need to match the exact MHz (33A for the 33 MHz version), or I can place the 40 MHz version as well?

On the Macintosh both chips show no difference when inserted, since they are clocked to the 68030 of the Performa, which is 25 MHz.

Mick · Yesterday, 18:08

The logo on the 33mhz one is Freescale Semiconductor.

The worry with Chinese stuff tends to be remarking lower speed parts as higher speed ones.

28 May 2018, 00:19	#1
redblade Zone Friend Join Date: Mar 2004 Location: Middle Earth Age: 40 Posts: 2,130	68882 fpu from China Hi. I am looking at buying a 68882 fpu and a crystal for my accelerator. Has any one had any experience with buying them from China/Hong Kong?? They appear very cheap on ebay and some with free international posting (Under $10NZD £5.21). Thanks

Yesterday, 15:03	#7
drHirudo Amiga user Join Date: Nov 2008 Location: Sofia / Bulgaria Posts: 477	68882 from Aliexpress I bought two different incarnations of 68882 from Aliexpress. The 40 MHz seems to be from Motorola and the other has some other company logo (33 MHz version). See attached picture. I was told that these are laser engraved fakes, but both of them were recognized when I placed them in my 68030 based Macintosh Performa 450 in the FPU slot. Not sure what software to use to test them on MacOS 7, but they are recognized and listed as 68882 in MacEnvy. Will they work on Viper 1230? Do I need to match the exact MHz (33A for the 33 MHz version), or I can place the 40 MHz version as well? On the Macintosh both chips show no difference when inserted, since they are clocked to the 68030 of the Performa, which is 25 MHz. Attached Thumbnails

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28 May 2018, 01:11	#2
chue Registered User Join Date: Feb 2018 Location: United States Posts: 81	I bought five of the surface mount 68882's from here: https://www.ebay.com/itm/1pcs-MC6888...item3cc6210e1d The first one worked, and I have not tested the others.

29 May 2018, 02:11	#3
redblade Zone Friend Join Date: Mar 2004 Location: Middle Earth Age: 40 Posts: 2,130	Thanks chue. It makes sense to buy more than one if they are that cheap . Do you have a source for crystals?

29 May 2018, 03:51	#4
chue Registered User Join Date: Feb 2018 Location: United States Posts: 81	For older electronic components, I usually buy from highly rated sellers on Ebay. If pricing is cheap enough I figure it is ok to risk it. I usually buy more than one of each component to reduce the likelihood of getting a bad one. That and my soldering ability is less than stellar

30 May 2018, 16:56	#6
Marchie Registered User Join Date: Jul 2016 Location: Sydney / London Posts: 596	I bought from these guys and didn't have any problems. Recommended to some friends and they had a positive experience also.

Yesterday, 18:08	#8
Mick Registered User Join Date: Jan 2004 Location: Yorkshire Posts: 758	The logo on the 33mhz one is Freescale Semiconductor. The worry with Chinese stuff tends to be remarking lower speed parts as higher speed ones.

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