~PR-Rating for TBred B @11.5x227? Formula?

Hi,

How does the FSB influence the PR? And what would be the difference in PR between this:

11.5x227 and 12x217 ? Both result in a ~2610 clockspeed.

Is there a formula to get a ~result?

Thanks for answering.

pr rating is a marketing scheme. there is no way to correctly compare a p4 to an axp, thier designs are different and different suites of testing can show one in favor of the other.

the best you could do would be

office pr#
gaming pr#
encoding pr#
ect ect.

that being said, a 2600 clockspeed with an amd would compete with (win some lose some) with maby a 3.2~3.4 p4

Between 4000+ to 4200+, looking at it and the rest of Bartons.

This is what someone was saying but I don't think it's accurate:

Athlon XP Palamino and Thoroughbred:

Rating = 3 x Frequency/2 – 500



Athlon XP Bartons

Rating =3 x Frequency/2 + 100

or

Frequency =2 x Rating/3 - 66

According to sandra my PR rating on the machine in my rig is a 4046. Not sure what formula sandra uses, and if it is even the same thing that AMD uses but a 2600mhz under sandra is under 4000+

yeah thats at least a 4000+

Thanks for reply.

It's not Barton, it's just a 1700+ on water and 1.87V. The question is - how effects the higher FSB the rating?

There must be a difference running @FSB133 or FSB220 with the same internal clockspeed, shouldn't it?

It's just the thing that a friend wants to buy this cpu and wants to know it's P-rating when running at those different FSB speeds (FSB217 and FSB227).

I guess the difference isn't that high, but I thought there could be a formula that includes the FSB in 1-MHz steps.

So could ~3400+ or 3500+ be right? I hope you get me right, I don't want to compare to P4-3.2 or even EEs at that speed. I always thought the PR concerns to the TBird speed in MHz (XP1500+ with 1333 MHz is faster than the 1.4Gig T-Bird and so on)

Yes the original intent of the PR rating was to compare to the thunderbird. Ofc that original intent is long gone. Everyone knows what they are comparing to

If you want to find out the PR rating download Sisoft sandra and look in the system summary. There is lots of goodies in that app anyways. Its a must have in my book

O.K, Here is what I know, because I just spent the last half hour booting, change settings, booting, change settings...etc..

On my sig sys:

11*205 gives 3283pr

12*205 gives 3582pr

11*200 gives 3197pr

12*200 gives 3489pr

11*210 gives 3364pr

I did the work, you draw the conclusions.

However, I did notice something interesting:

If I try to go 12*210 the bios recognizes it, but at post, the defaults come up. SiSoftSandra confirms that the rig is running at default 100*11. The same thing happens at 11*212. The Vcore for both tests was at 1.975 and 2.0 respectfully. Does this sound like a power supply issue?

Hrm doesn't sound like a psu issue. I have had some of my motherboards do that when I overclocked a bit too much.

Well, it's definately curious. And better investigated tomorrow with a cup of coffee or two.

Wait a minute, 12*210 is only 2520, and 11*212 is only 2332. Could this be a ram or agp problem? I just had this thing posting at 12*209 the other day. It froze up during Prime95 but it ran for a couple of hours. That leads me to believe that 210 fsb may have something to do with it or the Vcore. Tonight was the first time I ever had it above 1.875.

Well, like I said, morning, coffee.

This is the last post tonight I swear!

I set the RAM to auto and managed to get the following:

11*212=3397pr
11.5*212=3551pr
12*212=I got that odd bios default thing again, plus I could hear my fans slow down!