What is the difference of Socket 370 and FC-PGA?

[HomiePodgy]

What is the exact difference of the Socket 370 and the FC-PGA-socket? And what is the difference between Pentium III E and the EB and the "pure" Pentium III?

 

[Jhhnn]

s370 is the physical configuration of a family of Intel processors, a socket style with 370 pins. The first s370's were ppga celerons, next came the fcpga p3e's, and then fcpga celeron-2's. The older celerons have a metal cover about 1" square over the actual silicon, while the newer fcpga's have a bluish heat-conductive coating over bare silicon, the actual size of which is about 1/2" square.

All s370 processors will work in single processor boards designed for the newer fcpga models, but not necessarily in dual boards or ones originally designed for ppga.

The original pentium 2's &3's came only in slot-1, and had 512K of 1/2 speed L2 cache memory chips mounted on the slot-1 cartridge with the processor. The s370 family has full speed L2 cache memory integrated into the processor, 256K for p3e's, 128K for celerons.

The difference between the p3e and the p3eb is that e-series is built for 100mhz bus, while the eb is for 133mhz bus. Intel does this with fixed multipliers. P3-800e=100mhz bus times 8.0 multiplier, while P3-800eb=133mhz bus times 6.0 multiplier.

The e-series is generally used for overclocking, a p3e-700 on a 133 bus yields 933mhz, sometimes.

At least, that's how I understand it.

 

[Sunny129]

in addition to Jhhnn's info:

PPGA = plastic pin grid array
FCPGA = flip chip pin grid array

 

[CraigRT]

Also to add to the above post.. the E means 256K on-die full speed L2 cache.
no E would mean 512

the B means 133 BUS with 512K cache
and EB means 133 BUS with full speed L2 256K
E alone means just 256K L2 cache and 100 MHz system BUS.

example.. 700E@933EB = 133 system BUS.

and also there is not really any differences between the two they are both 370 pin same layout for both. it was mentioned above...

 

[Jhhnn]

Learned something from you post, Yield. Or at least you refreshed some forgotten memory.

Apparently Intel did make some P3b-533&600 slot-1 processors with 512K of half speed memory chips. I had to check to be sure. Weird, considering that only Via chipsets would properly support 133fsb at the time.

 

[Kingofcomputer]

Both are 370 pins socket but some pins are different.
Older socket 370 mb doesn't take FC-PGA cpu.

 

[rominl]

yes, there were 533 using slot 1 and 512k l2 cache... reason? remember the good old i820 chipset? there you go...

 

[Pers]

funny question...