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Door , , 0 reacties
Bron: webmagix

JC heeft een best wel dikke preview van de Cyrix Japaleno in elkaar gedraaid. Met alle heisa rond Intel en AMD zou je ze bijna vergeten.

Met de 6x86 liet Cyrix in 1996 al zien dat ze in staat zijn om Intel qua prestaties voorbij te streven. Ze waren zelfs de eersten met een 75MHz bus (op de PR200+ op 2x75Mhz). De FPU performance was klote maar die speelde geen rol in het pre-Quake tijdperk.

Genoeg gelul, hier wat spul uit het artikel:

All the above features lead up to a processor which seems to, in most respects, approach the level of the K7 but never quite achieve it. Even in this case, this makes the Jalapeno an offering to consider -- certainly, the M3 (Jalapeno is actually the name of the processor core -- the actual cpu's name will be this) will know no better competition than the K7, the M3 most likely beating out Coppermine, Intel's desktop offering in late 1999. What we haven't considered yet is National Semiconductor's fascination with the "integrated" processor, the "PC On A Chip". Despite not having the best of success at this in the past, their MediaGX offering in 1998 seems to have drummed up interest in this area, prompting both IDT and Intel to take serious looks into putting various motherboard/component features onto the processor. We will have a better idea of the prospects of this kind of integration when the Cayenne-enhanced MXi (reportedly codenamed "Panterra", according to one news source) comes out. In a similar way to the MediaGX and MXi, the Jalapeno will place a graphics unit onto their M3. Perhaps you recall the days of the 386, around the time when the 80387 was a popular thing? A mathematical chip, which offloaded burden from the cpu and performed more complex operations which required floating point registers. Now, the integer core could emulate this new floating point unit, or "fpu", but not without a massive drop in performance.

Now remember the 486. What was the crucial step here, which applies to our current situation? Correct! (well, correct if you guessed right, that is) The fpu was "integrated" (back then, I recall they used the much less flashy word, "put") onto the cpu, the 80486DX. The DX stood for ... um ... I'm not sure, but SX stood for "SUX", so you could take this to its logical extreme... Anyway, as you should recall (or as you will now learn), the SX version did not have the fpu, and was universally despised for that reason. It also led to the intensely confusing "487SX" notation, which meant a 486SX with a 487 fpu added on, or more succinctly, "486DX". :P

* As a side note, if I'm recalling correctly, Cyrix had at this time a popular and rather powerful version of the 80487. This is the sort of thing that Cyrix wants to do with their processor lines. By adding 2D and 3D graphics features to their processors, you can save a pretty penny by not having to buy standalone 2D/3D cards. Granted, the graphics unit inside the M3 won't be as advanced as the Voodoo4 or TNT3 or G250 or whatever is out at the time, but being so close to the processor gives any graphics unit a stong advantage over its competition.

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