Fpu

mancity · 13 June 2012, 09:13

Hi guys,

If you get a better FPU chip for your trapdoor expansion, does this at all upgrade the graphics capabilities to play 3D Amiga games? (Alien Breed 3D, Breathless etc).

I didn't think it did, I thought it was for like spreadsheet work where calculations etc are needed, but I have been a listing on e-bay say that it improves 3D gaming on the Amiga?

seuden · 13 June 2012, 10:13

No it doesn't.

diablothe2nd · 13 June 2012, 13:19

an FPU is a math co-processor. when the lister says it speeds up 3D, he probably means 3D applications like Lightwave and Real 3D as these require heavy math calculations.

further reading on the function of an FPU:
http://en.wikipedia.org/wiki/Floating-point_unit

ajk · 13 June 2012, 14:05

3D games need lots of math, so it might seem logical that an FPU would help. However, since such expansions were not very common, most games (probably practically all) were designed to use integer-only maths, and thus having an FPU makes no difference.

clauddio · 13 June 2012, 14:14

Alien breed 3d and breathless do not use fpu
but
there are a few games that requires a fpu
example, quake, and duke nukem
sincerely I don't know any others
theoretically having a faster fpu must improve fps

roy bates · 13 June 2012, 14:21

an fpu on a ram card would be a waist of time for games that require an fpu theres just not anough umph in a 68881 or 68882 at any speed.

its only any good for rendering and raytracing,even then its mega slow.

mancity · 13 June 2012, 14:43

Cheers guys. Think the guy might have been telling a porky, HOWEVER, on closer inspection, it is a PGA FPU chip, so wouldn't have fit on my board so could be for somewhere else or a might fancier expansion card

roy bates · 13 June 2012, 15:18

Quote:

Originally Posted by mancity

Cheers guys. Think the guy might have been telling a porky, HOWEVER, on closer inspection, it is a PGA FPU chip, so wouldn't have fit on my board so could be for somewhere else or a might fancier expansion card

it still wouldent make any difference anyway mate,its the same part in a different package they where in plcc and pga format from about 16 to 50mhz

plcc upto 40mhz and pga upto 50mhz

13 June 2012, 09:13	#1
mancity Registered User Join Date: Apr 2012 Location: Manchester Posts: 288	Fpu Hi guys, If you get a better FPU chip for your trapdoor expansion, does this at all upgrade the graphics capabilities to play 3D Amiga games? (Alien Breed 3D, Breathless etc). I didn't think it did, I thought it was for like spreadsheet work where calculations etc are needed, but I have been a listing on e-bay say that it improves 3D gaming on the Amiga?

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13 June 2012, 10:13	#2
seuden uber cool demi god Join Date: Jun 2006 Location: Kent/England Posts: 2,073	No it doesn't.

13 June 2012, 13:19	#3
diablothe2nd Registered User Join Date: Dec 2011 Location: Northamptonshire, UK Age: 41 Posts: 1,236	an FPU is a math co-processor. when the lister says it speeds up 3D, he probably means 3D applications like Lightwave and Real 3D as these require heavy math calculations. further reading on the function of an FPU: http://en.wikipedia.org/wiki/Floating-point_unit

13 June 2012, 14:05	#4
ajk Registered User Join Date: May 2010 Location: Helsinki, Finland Posts: 1,341	3D games need lots of math, so it might seem logical that an FPU would help. However, since such expansions were not very common, most games (probably practically all) were designed to use integer-only maths, and thus having an FPU makes no difference.

13 June 2012, 14:14	#5
clauddio Banned Join Date: Aug 2011 Location: Saturn Age: 52 Posts: 279	Alien breed 3d and breathless do not use fpu but there are a few games that requires a fpu example, quake, and duke nukem sincerely I don't know any others theoretically having a faster fpu must improve fps

13 June 2012, 14:21	#6
roy bates Registered User Join Date: Apr 2011 Location: birmingham Age: 55 Posts: 2,827	an fpu on a ram card would be a waist of time for games that require an fpu theres just not anough umph in a 68881 or 68882 at any speed. its only any good for rendering and raytracing,even then its mega slow.

13 June 2012, 14:43	#7
mancity Registered User Join Date: Apr 2012 Location: Manchester Posts: 288	Cheers guys. Think the guy might have been telling a porky, HOWEVER, on closer inspection, it is a PGA FPU chip, so wouldn't have fit on my board so could be for somewhere else or a might fancier expansion card

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