Originally Posted by Derp
Originally Posted by Usario
The IPC point has gotten out of hand. Arguing back with "THAT'S JUST BECAUSE YORKFIELD HAS 10MB MORE L2 CACHE INTEL IS CHEATING" is just as legitimate. The difference is something like 5% and Deneb clocks higher. It's like, ignoring PCi-E 3.0, comparing a 4.5GHz 3770k with a 5GHz 2700k.
Q9550/Q9650 had no problem hitting the overclocks that were possible with Deneb. And you guys can keep downplaying the importance of IPC if you want but it has been the main reason why AMD has been behind intel for so many years. If competing chips have similar max overclocks (which has been the case) then IPC is very important.
Find me Q9550s and Q9650s that hit 4.6Ghz on air, golden Denebs did that and nearly every Thuban could do 4.2 easily; most of the Q9*50s hit that max
, not as routine in the later chips.
IPC means nothing
, on its own; there's Cyrix and AMD chips with very high IPC (The 6x86 and K6-3) but they're still insanely slow compared to modern chips due to low clock speed, if Piledriver was able to hit a high enough clock speed then it could beat Ivy Bridge, IPC doesn't matter at all, nor does clock speed; it's IPS that matters.
Originally Posted by Derp
Originally Posted by S.M.
How many years would that be?
When I built my 775 rig the two competing chips were C2D's and Denebs at their price points. A Q9550 was $300 and a PII 955 was $170.
I bought a E2180 for $90 which I then upgraded to a E8400, years
later, used for $100. At the time the E8400 was still $189.99 on newegg even though nehalem was released, and a Q9550 was $269.99.
IPC will only become important once we reach the limits of silicon.
I think you're confused. I specifically remember choosing between three CPU's when I built this rig. The i7 920, Q9550 and the Phenom II 940 were all within $30 of each other, the Phenom II 955 wasn't out yet. Maybe you built your rig after AMD finally realized that they needed to drop prices a ton similar to what happened with bulldozer.
IPC has always been important. Nobody would give a crap about the huge power consumption of bulldozer if it at least had nehalem IPC.
The 940? You do realize that the 955, etc (ie. AM3, not AM2+ Phenom IIs) were faster because of the new IMC included in those? I seriously hope you're not basing your opinion of all
PhIIs off the 940 and 920, overclocking the IMC gave massive increases in gaming
performance and actually improved IPC to the point where a stock 3.1Ghz Deneb quad with a 2.8Ghz IMC was nearly pulling numbers equal to my (iirc) 3.6Ghz OC with DDR2-800 in WinRAR. Phenom IIs were the budget chip to buy until BD came out and they were discontinued; that's why 775 died so quickly after being discontinued.