2mg wrote on 2023-07-09, 20:14:

Slight necro, but can someone ELI5 how did pre-C2D Intels with 2 "cpus glued together" actually handle FSB?
Did they share it, aka could one "core"choke the other, or was is 1/2 FSB speed split per "core"?

they where not glued together , 1 PCB , 2 dies (worked like dual Xeon 604)

https://cpumuseum.jimdofree.com/museum/intel/pentium-d/

https://www.bit-tech.net/reviews/tech/cpus/in … 4_670_pd_820/1/

and BTW , under early winXP versions , early vista and even some early 32 bit win7 , in day to day bassis Pentium D series , based on Netburst would handle better than C2D , not to mention posiblity of HT.

ediflorianUS wrote on 2023-07-11, 10:21:

Thanks.

By early, do you mean "before they got Service Packs and better support" or "early programs didn't run as good per se"?

ediflorianUS wrote on 2023-07-11, 10:21:

they where not glued together , 1 PCB , 2 dies (worked like dual Xeon 604)

90nm Pentium D were actually glued together. Your second picture is a die shot of the Smithfield core. It also has additional data bus to poke neighbors L2 cache.

The Serpent Rider wrote on 2023-07-13, 01:16:

ediflorianUS wrote on 2023-07-11, 10:21:

they where not glued together , 1 PCB , 2 dies (worked like dual Xeon 604)

90nm Pentium D were actually glued together. Your second picture is a die shot of the Smithfield core. It also has additional data bus to poke neighbors L2 cache.

I'm still a bit confused how'd these use the shared FSB, but that explanation might be a bit too technical.

Mostly as a classical dual socket system, as mentioned before.

The Serpent Rider wrote on 2023-07-13, 01:16:

ediflorianUS wrote on 2023-07-11, 10:21:

they where not glued together , 1 PCB , 2 dies (worked like dual Xeon 604)

90nm Pentium D were actually glued together. Your second picture is a die shot of the Smithfield core. It also has additional data bus to poke neighbors L2 cache.

Intel bodge job CPUs, ran so hot you could cook steak on them!

Fun times for weak VRMs too.

2mg wrote on 2023-07-12, 23:06:

ediflorianUS wrote on 2023-07-11, 10:21:

Thanks.

By early, do you mean "before they got Service Packs and better support" or "early programs didn't run as good per se"?

before service packs , sometimes even after. PreVista (longohorn editions or beta + SP1)

"Intel bodge job CPUs, ran so hot you could cook steak on them!

Fun times for weak VRMs too." - nonsense TrashPanda , it was even worse with the early lga P4 3.6+ Ghz editions
I had no issues with any D series on Dell cooling. (for 15+ years now)

ediflorianUS wrote on 2023-07-14, 12:25:

before service packs , sometimes even after. PreVista (longohorn editions or beta + SP1) […]
Show full quote

2mg wrote on 2023-07-12, 23:06:

ediflorianUS wrote on 2023-07-11, 10:21:

Thanks.

By early, do you mean "before they got Service Packs and better support" or "early programs didn't run as good per se"?

before service packs , sometimes even after. PreVista (longohorn editions or beta + SP1)

"Intel bodge job CPUs, ran so hot you could cook steak on them!

Fun times for weak VRMs too." - nonsense TrashPanda , it was even worse with the early lga P4 3.6+ Ghz editions
I had no issues with any D series on Dell cooling. (for 15+ years now)

You could indeed cook steak on them .. even seen videos of it being done, and weak VRMs did have issues with the Pentium D CPUs. Just because you have had one good experience with one doesn't mean the large body of evidence contrary to your experience is wrong.

Spent way too many hours repairing machines to just take one or even a handful of good experiences as fact. I will admit that in general Dell did have decent cooling in their business machines but they learned from their prior mistakes so their cooling was also generally overkill.

Pentium D was shite - change my mind ..wait dont bother you cant. (Conroe Pentium already did that)

TrashPanda wrote on 2023-07-14, 12:47:

You could indeed cook steak on them .. even seen videos of it being done, and weak VRMs did have issues with the Pentium D CPUs.

Would a modern cooler ala Scythe Mugen 1/2 s478 handle these monsters?
And maybe some ghetto small coolers and/or small heatsinks to chill VRMs on mobos too?