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How the heck do you compare speed??

T

telon2222

Member
What can I compare a Intel® Pentium® M Processor 750 (1.86 GHz/2MB Cache/533MHz FSB), how fast is it compared to for example a pentium 4 3.2 or an amd 64 3400+, is there a formula for this, thank you?
 
That's a tough one. Just search google for reviews of that processor, and when they do the benchmarking, they'll often compare them to desktop processors as well.
 
Originally posted by: telon2222
What can I compare a Intel® Pentium® M Processor 750 (1.86 GHz/2MB Cache/533MHz FSB), how fast is it compared to for example a pentium 4 3.2 or an amd 64 3400+, is there a formula for this, thank you?
Click to expand...

Should be very close to multiply by 1.6

So, about 3.0 Ghz P4/3000+ A64
 
Originally posted by: ericlala
wow so my 2.6 is like a 4.0ghz intel? thats something to brag about
Click to expand...

Actualy it would probably take about a 4.2ghz Pentium 4 to catch up to a 2.6ghz A64. I would say a 1.86ghz Dothan would compare to around a 3.2ghz P4, depending on the program. The Dothan is far more efficient in some areas, and lacking in others. It's much better for gaming than a P4, but for video encoding, or rendering, it will lag behind.
 
I do these regularly... it's extremly flawed since all bechmarks do not scale 100% with processor speed and differ on the amount of scaling between the cores, BUT is as good as it gets in an imperfect world, sorry.

Anyway it's a multiplier ratio as shown in my sig link... I've done plenty and basically it breaks down like this.
Barton x 1.25 =P4
A64 NC x 1.5 = P4
A64 CH x 1.53 = P4
A64 939 512KB x 1.55 = P4
A64 939 1MB x 1. 57 = P4

X2 x 1.65 = P4D


Hav'nt done dothan, due to varying platforms, adaptors, just general confusion on the desktop to make any good comparisons but it seems to be just a bit slower than a 939 chip globally at same speed. Weak FPU and limited bandwidth hurt it's media and 3d space, strong game performance.

But I think you're safe with 1.45:1 meaning you got a (1860Mhz x 1.45) = 2700Mhz P4 globally speaking.
 
speed=distance/time
notice that speed is a scalar quantity, and does not include a direction.
Velocity=distance/time in a given direction.
So now you have the formula and can measure processor speed on your own by measuring the distance traveled in a given time by each. This is exactly how the macintosh was proven to be the fastest personal computer a while back; it was the most aerodynamic when dropped from a window.
 
2.565ghz (winchester) x 1.55 = 3.976ghz P4?

Wow, all that for $150 🙂

So all those San Diego folks who are hitting 2.9 have a 4.553 P4?

Maybe this formula isn't supposed to be linear but hey, I don't have a better one on me
 
Don't forget that the Athlon 64's integrated memory controller actually gets faster with increases in clock speed, which means that the access penalty in cycles remains the same when going to main memory, allowing A64 performance to scale more linearly with clock speed. (Although this doesn't affect the latency of the memory modules themselves.)

Thus, I don't believe there can be a constant relationship in performance between an A64 and a P4.
 
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