Expensive when it was new (1997) and quickly faded away when the Pentium II got faster and more affordable. In the early days motherboards and SDR-SDRAM wasn't cheap. One was better off with a Pentium MMX or AMD K6 using regular EDO on a much cheaper socket 7 motherboard.

In 1998 the 233MHz model... > Read more

Chip-wise this Pentium II 233 is identical to my other Pentium II 233. The only difference is that this one doesn't have the standard Intel cooling attached. Systems builders could choose their own heatsink/fan solution instead.... > Read more

Quite a jump compared to the old Pentium II because the 350MHz (and both 400 and 450) models use a 100MHz front-side-bus.

The 350MHz 'Deschutes' is the only Pentium II with 'Deschutes'-core that uses the SECC (Single Edge Contact Cardridge). The 400MHz and 450MHz use SECC2 which doesn't have a me... > Read more

The Pentium II came in a new sort of packaging with L2 cache built in. This was done in order to get the L2 cache closer to the CPU which is faster. The Pentium MMX ran in socket 7 which has L2 cache on the motherboard and thus the CPU can only communicate with it at the bus frequency (usually 66MHz... > Read more

This Pentium II 300 used the 350nm 'Klamath'-core and is the fastest CPU you can get with this core. 'Klamath' formed the basis for the first Pentium II's released and was succeeded by the 250nm 'Deschutes'.

Not all Pentium II 300's are based on the 'Klamath' core, however. Some of the 300's are ... > Read more

Identical to this Pentium II 300 but 10 weeks newer.... > Read more

An early version of the Pentium II 400: A0-stepping, 34th week of 1998 and most notable is the older style SECC1-packaging. My other Pentium II 400 came in the SECC2-packaging that is far more common.

This particular CPU came out of a Compaq system. A hig... > Read more

This Pentium II 300 is fitted with the 'Deschutes'-core. It is the second generation Pentium II cores that is practically identical to it's predecessor 'Klamath' with the exception of the channel-width it has been built with. Deschutes is 250nm whereas Klamath is 350nm. The 250nm process needs less ... > Read more

As mentioned (and seen on photo's) on the page of this Pentium II 350 I have a bunch of Pentium II 350's that mostly look the same. One of those is this one so I added an Intel bunny suit in photo to differentiate a bit .... > Read more

This Pentium II 350 is fitted with Intels' boxed cooling fan solution. In it's day it was often referred to as a 'shroud' cooling.

The CPU was fitted on an Intel Seattle SE440BX motherboard with 64MB of RAM. Not an unusual combination, however, I think that 64MB was not enough for most people in ... > Read more

The codename of this Pentium II has been named after a river in Oregon; Deschutes. Deschutes is the 0.25nm successor to the 0.35nm Klamath-based Pentium II's. It was launched with this 333MHz model at 66MHz FSB and with the 350, 400 and 450Mz models that used the faster 100MHz FSB.

When then Pent... > Read more

Just like this Pentium II 350 but with different sSpec number.... > Read more

Is a Pentium II 350 a Pentium II 350? Yes and no. I have a couple of Pentium II's running at 350MHz that look and behave identical. However, on closer inspection it turned out they are assembled in different countries (Philippines, Costa Rica and Malay).

On the second picture I have stacked thes... > Read more

The fastest Pentium II around. This one comes with Intel's cooling solution which works out pretty well. For the rest it is comparable with this Pentium II 400. It also has the 'open chip' for better cooling.... > Read more

Same as this Pentium II 450 but without Intel's cooling solution.... > Read more

Same as chip the Pentium II 350 but different packaging. This CPU uses the SECC2 packaging which is better for cooling the chip. As seen on the photo the chip is open and the heatsink can be attached directly. Downside is that the chip is more fragile this w... > Read more