Tiago 13:28 26th December 2008
Probably you heard this question before:
- Should i get a FPU for a expansion card?
I got the Blizzard 1230 mk-IV @50, i has no FPU should i get one?
I read the "yes" and the "No" before:
- some guys say that FPU is only used in 3D or maths aplications.
- others say that FPU is used in a normal image software
- i even heard that is used for reading mp3...
Being a Floting Point Unit (F.P.U), i can see any other application rather then 3D software or other maths programs, something like Excel, or similars...
If it has a significant advantage, were can i buy one for the blizzard 1230 iV ?
didnt see any in ebay or amikit.
What about speed, my CPU in @50MHz, can i only use FPU of 50MHz?
[Reply]
Fern 15:03 26th December 2008
They aren't expensive. You may as well buy and install one so it's always there if you need it. I would definitely have one, but then I plan on eventually having my 1200 at a "can play Doom nicely" standard so I probably NEED one.
If ever I had money to burn I would get a 1260 card which, being a full 68060 would have built-in FPU and MMU... but they do cost a small fortune!
I have found a few 68882's on eBay but they are the wrong version for your card, which doesn't really help. I can only find the PLCC packaged chips @25MHz, and I believe you would need PGA packaged @ 50MHz. I will keep looking and see what I can find.
EDIT:
http://cgi.ebay.co.uk/MC68882RC25A-M...3286.m63.l1177
This should fit your card. One thing I'm not sure of is what the clock speed is. I'm completely clueless as to whether the chip has a maximum clock speed, but the actual operating speed is decided by jumpers or a crystal on the card, or if they're built at the factory to work at one speed and it can't be changed... This is a question for the experts
[Reply]
Tiago 16:21 26th December 2008
JLPedro 09:29 27th December 2008
The card only as one cristal witch is running at 50Mhz so both CPU and FPU must run at 50MHZ, so a fpu slower than 50MHz will be overclocked.... and no a 25mhz fpu will not make it alive...
[Reply]
Tiago 14:07 27th December 2008
Originally Posted by JLPedro:
The card only as one cristal witch is running at 50Mhz so both CPU and FPU must run at 50MHZ, so a fpu slower than 50MHz will be overclocked.... and no a 25mhz fpu will not make it alive...![Thumbsdown2](images/smilies/custom/thumbsdown2.gif)
Ok, but i don't know if i can get a fpu at 50mhz, didn't find any so far.
[Reply]
Lockon 07:23 28th December 2008
50MHz 68882 is hard to locate and hence high price (above 30 euros).
I recently completed my quest for 40Mhz version (need one for my GVP A530) which is also very pricey (Mr.JJB offers at AmigaCenter France offers it for 50 euros).
[Reply]
Tiago 14:41 28th December 2008
Originally Posted by Lockon:
50MHz 68882 is hard to locate and hence high price (above 30 euros).
I recently completed my quest for 40Mhz version (need one for my GVP A530) which is also very pricey (Mr.JJB offers at AmigaCenter France offers it for 50 euros).
![Blink](images/smilies/custom/blink.gif)
50 euros ?!?!? OMG
[Reply]
Stephen Coates 16:23 28th December 2008
I was told that an FPU is useful as it will help IBrowse display graphics alot quicker.
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