Doom3 Benchmarks out!

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Highlandish said:
both your pc's had a math coprocessor in them, that's why they ran better.
the sx models were severely hampered with out one
Click to expand...

386s did not come with a math coprocessor, it was a very expensive add
on, if your motherboard supported it at all.
 
Tony said:
you would have been really really! jealous of my DX4/100 then :)

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Click to expand...

I remember those days very well :) I finally did get a 486 DX4/100,
and only a couple months later the Pentium motherboards seemed to pop up
everywhere at low cost, so I skipped the '2 digit midgets' and got a
P-233 and 2ea 64 meg dimms! Been upgrading furiously ever since! :-p
McG.
 
Quoth The Raven "Michael W. Ryder said:
386s did not come with a math coprocessor, it was a very expensive add
on, if your motherboard supported it at all.
Click to expand...

uhuh, I knew that, I guess you didn't catch the point that his was a 386DX,
the sx models meant no math co-processor, while the dx models did.
 
Highlandish said:
Quoth The Raven "Michael W. Ryder" <mwryder@_worldnet.att.net> in
E%[email protected]

uhuh, I knew that, I guess you didn't catch the point that his was a 386DX,
the sx models meant no math co-processor, while the dx models did.
Click to expand...

No they didn't, the math co-processor was extra even in the i386DX. You're
confusing 386 with 486. I had added a math co-processor though in my 386,
very few people did.


RayO
 
Highlandish wrote:

both your pc's had a math coprocessor in them, that's why they ran better.
the sx models were severely hampered with out one
Click to expand...

If I am remembering this correctly:
386SX was a cut down version of the 386 with some of the data pathways
cut in half. 386DX was the full 32bit 386 chip. The 387 co processor was
an add on for the 386DX/SX.

On the 486, DX meant 'with co processor' and and 486SX had no co
processor. You could buy a 487 co processor to compliment the 486sx.

Actually, DooM (or Duke) took no advantage of a maths co processor.
Quake was the first ID game to do this.

I seem to remember that having PCI graphics rather than ISA made the
difference between jerky and ultrasmooth on the 486/66. Probably, VLB
would have been similar to PCI in performance.
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No they didn't, the math co-processor was extra even in the i386DX. You're
confusing 386 with 486. I had added a math co-processor though in my 386,
very few people did.


RayO
Click to expand...

Yep. The DX designation just meant 32 bit vs 16 bit addressing and
such, no bearing on still having to plug in a 387 coprocessor chip.

-Slash
 
killermike said:
Highlandish wrote:



If I am remembering this correctly:
386SX was a cut down version of the 386 with some of the data pathways
cut in half. 386DX was the full 32bit 386 chip. The 387 co processor was
an add on for the 386DX/SX.

On the 486, DX meant 'with co processor' and and 486SX had no co
processor. You could buy a 487 co processor to compliment the 486sx.

Actually, DooM (or Duke) took no advantage of a maths co processor.
Quake was the first ID game to do this.

I seem to remember that having PCI graphics rather than ISA made the
difference between jerky and ultrasmooth on the 486/66. Probably, VLB
would have been similar to PCI in performance.
Click to expand...


There is one thing about the 387 math-chip that not many people
knew. It didn't just speed up floating-point math, but also
integer division and multiplication, as well as long integer math of any sort.
So just about any software that did a lot of math, including integral math,
benefited from it.

RayO
 
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