VOGONS


First post, by 386SX

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Hi,

just testing some Pentium cpu and I can't understand something: was the Pentium 120 the last 0,60u core or was it already the 0,35u family of the 133 up to the 200?
Cause looking at the back of the cpu they both seems the same size and the heat of the heatsink seems equal. Also online I have read different version of the story.
And any of you that tested the 200Mhz standard Pentium, was it good and comparable to the 166 MMX?
Thank

Reply 1 of 16, by BSA Starfire

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I "think" the 120mhz was the new type, I always thought the 100mhz was the cut off point.

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Reply 2 of 16, by 386SX

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BSA Starfire wrote:

I "think" the 120mhz was the new type, I always thought the 100mhz was the cut off point.

Yeah I think that too. I would use the 100 but my mainboard can't go 50Mhz x 2. Only 60.
Cpuz say 0,35 but online I've read that 133Mhz was the first 0,35u. But was the first Pentium 60 at 0,80u? They certainly reduced a lot of space..

Reply 3 of 16, by sunaiac

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85632c0c95ca691945a32a2c43651346217944f3.png

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Reply 4 of 16, by F2bnp

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According to Wikipedia and CPUWorld, you guys are correct. The Pentium 100 belongs in the same line as the Pentium 90 and the Pentium 75, manufactured at 0.6μm, where as the Pentium 120 to Pentium 200 were manufactured at 0.35μm.

Pentium 200 and MMX 166 are basically on par with one another. The 33MHz clock difference is easily nullified by the MMX's twice as big L1 cache. Applications that don't care about the extra cache will be faster on the P200. It is a rather trivial difference however.

Reply 5 of 16, by 386SX

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sunaiac wrote:
http://reho.st/self/85632c0c95ca691945a32a2c43651346217944f3.png […]
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85632c0c95ca691945a32a2c43651346217944f3.png

Thank! I'm gonna say I was expecting more with the MMX. Not bad the classic 200.

Reply 6 of 16, by PhilsComputerLab

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My tests showed that, under Windows 98 and with a Voodoo 2 card, the MMX 166 is ahead of the 200. In DOS the MMX doesn't help that much though.

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Reply 7 of 16, by 386SX

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philscomputerlab wrote:

My tests showed that, under Windows 98 and with a Voodoo 2 card, the MMX 166 is ahead of the 200. In DOS the MMX doesn't help that much though.

Did the os itself benefit from it just like the SSE did or no benefit on the usual usage?

Reply 9 of 16, by Kamerat

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F2bnp wrote:

According to Wikipedia and CPUWorld, you guys are correct. The Pentium 100 belongs in the same line as the Pentium 90 and the Pentium 75, manufactured at 0.6μm, where as the Pentium 120 to Pentium 200 were manufactured at 0.35μm.

Pentium 200 and MMX 166 are basically on par with one another. The 33MHz clock difference is easily nullified by the MMX's twice as big L1 cache. Applications that don't care about the extra cache will be faster on the P200. It is a rather trivial difference however.

CPU World list both 0,6μm and 0,35μm for the Pentium 120.

www.cpu-world.com/CPUs/Pentium/Intel-Pe ... -120).html

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Reply 10 of 16, by F2bnp

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Kamerat wrote:
F2bnp wrote:

According to Wikipedia and CPUWorld, you guys are correct. The Pentium 100 belongs in the same line as the Pentium 90 and the Pentium 75, manufactured at 0.6μm, where as the Pentium 120 to Pentium 200 were manufactured at 0.35μm.

Pentium 200 and MMX 166 are basically on par with one another. The 33MHz clock difference is easily nullified by the MMX's twice as big L1 cache. Applications that don't care about the extra cache will be faster on the P200. It is a rather trivial difference however.

CPU World list both 0,6μm and 0,35μm for the Pentium 120.

www.cpu-world.com/CPUs/Pentium/Intel-Pe ... -120).html

That's odd. If you choose to only display 0.6μm CPUs, it only goes as far as the Pentium 100.

Reply 11 of 16, by sunaiac

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philscomputerlab wrote:

My tests showed that, under Windows 98 and with a Voodoo 2 card, the MMX 166 is ahead of the 200. In DOS the MMX doesn't help that much though.

It would be interesting to test the same games in software only if you ever happen to have time, to see if the main gain of the MMX is actually thanks to the Voodoo drivers.

edit : now that I think about it, I have at least unreal and forsaken that I could test myself, and I think my quake 4 copy had a quake 2 licence coming with it. I'll try to do it if I ever get time.

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Reply 12 of 16, by QBiN

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F2bnp wrote:
Kamerat wrote:

That's odd. If you choose to only display 0.6μm CPUs, it only goes as far as the Pentium 100.

The wikipedia page for the P5 Architecture has a table with all the P5 models. It also seems to indicate that Pentium 120's were manufactured in both .6 and later .35 micron processes.

https://en.wikipedia.org/wiki/P5_(micro ... d_variants

Reply 13 of 16, by alexanrs

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From what I understood from the Wikipedia article, the .35 micron Pentium 120MHz was a later/perhaps mobile variant.

Reply 14 of 16, by 386SX

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That is what confused me reading it too. Who remembers more about it?

Reply 16 of 16, by 386SX

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So it looks like I've the SX994 -> C2 stepping -> 0,60 micron old one. Nice. 😀

From the newer steppings pages in CpuWorld seems that the 0,35u ones had also some mobile technology features like Voltage reduction technology.