Look at this beautiful 1 GHz #Alpha #CPU from an #HP/#Compaq #AlphaServer DS15
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Look at this beautiful 1 GHz #Alpha #CPU from an #HP/#Compaq #AlphaServer DS15.
The underside does not have pins, but holes in which wires end. These wires are touching the contacts on the motherboard. There's no socket whatsoever. Weird design.
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Look at this beautiful 1 GHz #Alpha #CPU from an #HP/#Compaq #AlphaServer DS15.
The underside does not have pins, but holes in which wires end. These wires are touching the contacts on the motherboard. There's no socket whatsoever. Weird design.
@derSammler those are good examples of Ball Grid Array and Land Grid Array, e.g. BGA and LGA cores. The BGA page has examples of many sub-types, and links to the other primary designs, kinda worth a look:
https://en.wikipedia.org/wiki/Ball_grid_array
There's so much fun to be had with old CPU collections, especially vintage alternate types like the Alpha. Sun UltraSparc and PowerPC from the same era also have some beautiful examples.
That DS15 CPU is a classic (https://en.m.wikipedia.org/wiki/Alpha_21264), very interesting early example of using branch prediction calculations to accelerate cache reads vs suffering potential cycle penalties and stack eviction.
> The predictor was used as the Alpha 21264 has a minimum branch misprediction penalty of seven cycles. Due to the instruction cache's two cycle latency and the instruction queues, the average branch misprediction penalty is 11 cycles. The algorithm maintains two history tables, Local and Global...
> The local predictor consists of a 1,024-entry by 10-bit branch history table... Each entry is a 3-bit saturating counter. The value of the counter determines whether the current branch is taken or not taken.
> The global predictor is a single-level, 4096-entry branch history table. Each entry is a 2-bit saturating counter; the value of this counter determines whether the current branch is taken or not taken.
ok ok, enough of this nerdery. there are Alpha 21264 CPUs on eBay if anyone wants to own a piece of this wonderful engineering. https://ebay.us/m/ttryzO
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undefined Eva Winterschön ha condiviso questa discussione
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@derSammler those are good examples of Ball Grid Array and Land Grid Array, e.g. BGA and LGA cores. The BGA page has examples of many sub-types, and links to the other primary designs, kinda worth a look:
https://en.wikipedia.org/wiki/Ball_grid_array
There's so much fun to be had with old CPU collections, especially vintage alternate types like the Alpha. Sun UltraSparc and PowerPC from the same era also have some beautiful examples.
That DS15 CPU is a classic (https://en.m.wikipedia.org/wiki/Alpha_21264), very interesting early example of using branch prediction calculations to accelerate cache reads vs suffering potential cycle penalties and stack eviction.
> The predictor was used as the Alpha 21264 has a minimum branch misprediction penalty of seven cycles. Due to the instruction cache's two cycle latency and the instruction queues, the average branch misprediction penalty is 11 cycles. The algorithm maintains two history tables, Local and Global...
> The local predictor consists of a 1,024-entry by 10-bit branch history table... Each entry is a 3-bit saturating counter. The value of the counter determines whether the current branch is taken or not taken.
> The global predictor is a single-level, 4096-entry branch history table. Each entry is a 2-bit saturating counter; the value of this counter determines whether the current branch is taken or not taken.
ok ok, enough of this nerdery. there are Alpha 21264 CPUs on eBay if anyone wants to own a piece of this wonderful engineering. https://ebay.us/m/ttryzO
@winterschon I know that this is supposed to be CLGA packaging. But the weird part is that there is no socket on the mainboard, just vias. Normally, that plastic carrier that is part of the CPU should be on the mainboard forming the socket. In this case, it's not.
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@winterschon I know that this is supposed to be CLGA packaging. But the weird part is that there is no socket on the mainboard, just vias. Normally, that plastic carrier that is part of the CPU should be on the mainboard forming the socket. In this case, it's not.
@derSammler that's a beautiful photo of a very unique design. I'm interested in seeing how the project turns out, keep posting ☺️
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@winterschon I know that this is supposed to be CLGA packaging. But the weird part is that there is no socket on the mainboard, just vias. Normally, that plastic carrier that is part of the CPU should be on the mainboard forming the socket. In this case, it's not.
@derSammler oooh, now this is especially intriguing — at least until I acquire one of the Alphas I've had my eyes one via eBay action — the perfect one is hard to find, so patience must prevail.
Gli ultimi otto messaggi ricevuti dalla Federazione
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2 days to go!
FediMeteo: How a Tiny €4 FreeBSD VPS Became a Global Weather Service for Thousands#EuroBSDConAdvent #EuroBSDCon #BSD #FreeBSD #OpenBSD #NetBSD #DragonFlyBSD #ZFS #PF #RunBSD #FediMeteo
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“Gaza Is Burning”: How Zionist Hate Fuels Genocide?
https://www.counterpunch.org/2025/09/22/gaza-is-burning-how-zionist-hate-fuels-genocide/"Israel’s war minister, Israel Katz, declared with characteristic Zionist hubris: “Gaza is burning.” His words were not a battlefield report or a measured account of military progress. They were a boast—almost celebratory—as though the incineration of a city, a gas chamber for a million human beings, were what defined Israel’s notion of military
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#nogenocidio
[News] Oggi sciopero generale per la Palestina - news@peacelink.it https://share.google/P4cAi2f8vtgBivUl9
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La domanda è: fino a che punto un Paese democratico può sacrificare la legalità internazionale sull’altare delle convenienze diplomatiche ed economiche?
https://left.it/2025/09/22/tajani-ministro-dellimpotenza/
(il mio #buongiorno per @left_rivista)
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@wackJackle
Thank goodness.
So AfD, Pegida & Co. are good fellas.
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Before you automate a manual process, make sure you actually know what the process is, and what to do if a step in the process fails.
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Lo fanno per bloccare la mobilità in città, potevano chiudere solo Repubblica come al solito (la manifestazione sta a piazza della repubblica)
Ste merde
![[G.R.K.]🌈🏳️⚧️Ⓐ💣¡NoPasarán!](https://anarchism.space/system/accounts/avatars/000/121/277/original/2beab96cfa221ced.jpg "[G.R.K.]🌈🏳️⚧️Ⓐ💣¡NoPasarán!"){kind=avatar}
