Yes, and the main difference between the R4200 and the other R4x00 CPUs
are that is *not* pincompatibel, that it has the old R3000 pipeline and
a simpler FPU. Note: This is what I've heard. I will receive data sheets
this week. Perhaps things have changed...
However, if the R4200 is no real R4x00 CPU I would suggest to use
one of the others, even if it is more expensive at the moment.
Are we going to build a R4000 machine now ? I would appreciate this !
Prices and performance
1. Quantities were unspecified, in any case these prices are for
more chips than we're looking to buy, and for small lots the
distributor sets the price.
2. All prices in US Dollars
3. The figures for everything but the 4200 are from the July OEM magazine,
I don't know where the 4200 info originated, but several net.sources
said the same things.
4. Clock speed is in Mhz, obviously these things run the internal clock
faster than external.
Vendor Clock Chip Price SPECint92 SPECfp92
unspecified 100 R4000SC 640 61.7 63.4
unspecified 150 R4400SC 1120 88(est) 97(est)
NEC 80 R4200 70 55 30
And, for comparison
Intel 66 486 542 32.2 16.1
Intel 66 Pentium 965 64.5 56.9
Unquestionably, the R4200 gives the best price/performance of
any of these chips.
After we adpoted the motherboard idea and people started calling this
thing a "workstation", a target price of $600-$700 was set. It might
be a little difficult to meet a price somewhere in that neighborhood
if we end up using a $640 chip...