CPU Design philosophy: Gigahertz war

[@TheDtownpiston]

I would love to see a video strictly on bulldozer and why it failed.

[@DigBipper188]

Same here.

[@thudtheace]

Bulldozer was built around highly threaded application model, not single to low thread application model (which were the prevalent threading model at the time), and it failed. But as a server processor, it scaled quiet well, especially for VM's.

[@admiralmyxtar3702]

After watching this video I've come to a thought: Pentium 4's architecture looks so flawed at fundamental levels, that I have a hard time believing it was a mistake. Probably a very carefully planned way to increase clock speeds to the Moon and make an illusion of a fast CPU in the eyes of average Joe. Having CPU stall and wait for main memory does increase stable clock speeds - just compare the same CPU in AIDA64's FPU and memory stress tests. Both load CPU by 100%, yet first case can almost double the power consumption of first. And it worked sadly, and bribes to OEMs to not use superior Athlons just sealed the deal and pushed AMD tens of percents of market share behind.

[@niewazneniewazne1890]

Remember they've had in plans Pentium 5 Tejas/Jayhawk. "50 stage pipeline", "Slated to operate at 7Ghz", "Tejas went even further ahead with this paradigm, with Intel targeting 10GHz clock speeds by 2011".

[@vyor8837]

AMD should have updated K10 again.

[@vyor8837]

@@niewazneniewazne1890 he worked on infinity fabric and an ARM chip they never released.

[@AlexSeesing]

Robot! And you are right Sir. Now, if you would, can I add to this how Bulldozer finally scales well in modern games?

[@Luredreier]

4:41 AMD just use "SMT" as their term. Why invent the wheel? And saying that they where behind... Eh, debatable. Bulldozer and Piledriver used a hybrid SMT tech in their Bulldozer and Piledriver processors after all.

[@nelsonandrade375]

graph shown at 1.22 is wrong, amd was first to 1ghz. If you consider demos then ibm reached it in 97 with an experimental chip. Intel was only able to take back the crown with the p4 northwood, the p4 williamette with its rambus couldnt compete with amd using ddr ram.

[@TrueMathSquare]

Decent, Interesting, and yet confusing video cause you didn't really go into detail.