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Someone explain Super pi numbers to me

R

Rick James

Senior member
I have an X3 @ 3.8Ghz that does the 1M test in 18 seconds but my C2D E5400 @ 3.5Ghz did the test in 12 Seconds. Does that mean the C2D is just faster all around? I'm playing with this new processor and it feels so much slower then my I7 even at 2.66ghz. What gives?
 
C2D is faster than phenom II clock for clock in superPI. that shouldn't surprise you, we've known that for a long time. IIRC superPI only uses one thread, so the number of cores is mostly irrelevant to the test.
 
Originally posted by: ilkhan
C2D is faster than phenom II clock for clock in superPI. that shouldn't surprise you, we've known that for a long time. IIRC superPI only uses one thread, so the number of cores is mostly irrelevant to the test.
Click to expand...

What the explination of why it is faster clock for clock? Cache? FSB?
 
Originally posted by: Rick James
I have an X3 @ 3.8Ghz that does the 1M test in 18 seconds but my C2D E5400 @ 3.5Ghz did the test in 12 Seconds. Does that mean the C2D is just faster all around? I'm playing with this new processor and it feels so much slower then my I7 even at 2.66ghz. What gives?
Click to expand...

Don't know why, but it's one of those strange benchmark anomalies.

The inverse would be WinRAR, where PhII dominates C2D/Q. Strange.

Interesting to hear that X3 @ 3.8 "feels so much slower then (sic) my I7". I've read several posts where C2D/Q upgraders to i7 have not noticed a performance increase in day-to-day usage, which IMO is to be expected as "typical" usage doesn't stress the CPU much, and there are other bottlenecks, such as storage speed.
 
Originally posted by: Rick James
Originally posted by: ilkhan
C2D is faster than phenom II clock for clock in superPI. that shouldn't surprise you, we've known that for a long time. IIRC superPI only uses one thread, so the number of cores is mostly irrelevant to the test.
Click to expand...

What the explination of why it is faster clock for clock? Cache? FSB?
Click to expand...

It depends. Cache can play a significant role. pipeline implementations may be better. ect.

For the C2D, its large cache can almost completely contain the Super pi program, that might be a significant reason why it goes faster.
 
Originally posted by: Rick James
Originally posted by: ilkhan
C2D is faster than phenom II clock for clock in superPI. that shouldn't surprise you, we've known that for a long time. IIRC superPI only uses one thread, so the number of cores is mostly irrelevant to the test.
Click to expand...

What the explination of why it is faster clock for clock? Cache? FSB?
Click to expand...

The execution of the machine level instructions themselves used in SuperPi could simply consume less processor cycles.

Originally posted by: Flipped Gazelle
The inverse would be WinRAR, where PhII dominates C2D/Q. Strange.
Click to expand...

Winrar benching is dominated by ram bandwidth, as are large matrix manipulations, which is why the IMC was such a benefit to opteron and phenom over Intel's FSB based platforms.

 
Originally posted by: Idontcare

Originally posted by: Flipped Gazelle
The inverse would be WinRAR, where PhII dominates C2D/Q. Strange.
Click to expand...

Winrar benching is dominated by ram bandwidth, as are large matrix manipulations, which is why the IMC was such a benefit to opteron and phenom over Intel's FSB based platforms.
Click to expand...

Yeah, I had figured the IMC was the hero, but it still strikes me that the performance difference is so huge. And then to see i7 take another enormous step over PhII...

 
This is a troll post.

From Tom's

posted by: PsychoSaysDie
I have an X3 @ 3.8Ghz that does the 1M test in 18 seconds but my C2D E8500 @ 3.8 Ghz did the test in 11 Seconds. Does that mean the C2D is just faster all around? I'm playing with this new processor and it feels so much slower then my I7 even at 2.66ghz. What gives? Superior Intel architecture?
Click to expand...
 
Originally posted by: heyheybooboo
This is a troll post.

From Tom's

posted by: PsychoSaysDie
I have an X3 @ 3.8Ghz that does the 1M test in 18 seconds but my C2D E8500 @ 3.8 Ghz did the test in 11 Seconds. Does that mean the C2D is just faster all around? I'm playing with this new processor and it feels so much slower then my I7 even at 2.66ghz. What gives? Superior Intel architecture?
Click to expand...
Click to expand...

I asked on both sites obviously
 
Originally posted by: heyheybooboo
This is a troll post.

From Tom's

posted by: PsychoSaysDie
I have an X3 @ 3.8Ghz that does the 1M test in 18 seconds but my C2D E8500 @ 3.8 Ghz did the test in 11 Seconds. Does that mean the C2D is just faster all around? I'm playing with this new processor and it feels so much slower then my I7 even at 2.66ghz. What gives? Superior Intel architecture?
Click to expand...
Click to expand...

whats wrong with asking on both sites?

And i dont see in any way how he's pushing 1 class over the other with false info.

He's asking a true question, which is faster, and why.

 
Originally posted by: aigomorla
Originally posted by: heyheybooboo
This is a troll post.

From Tom's

posted by: PsychoSaysDie
I have an X3 @ 3.8Ghz that does the 1M test in 18 seconds but my C2D E8500 @ 3.8 Ghz did the test in 11 Seconds. Does that mean the C2D is just faster all around? I'm playing with this new processor and it feels so much slower then my I7 even at 2.66ghz. What gives? Superior Intel architecture?
Click to expand...
Click to expand...

whats wrong with asking on both sites?

And i dont see in any way how he's pushing 1 class over the other with false info.

He's asking a true question, which is faster, and why.
Click to expand...

In asking that, did you also notice he says his Phenom X3 720is slower then his E5400 here and slower then his E8500 there? I very well doubt he has what he's talking about.

Troll..
 
Originally posted by: Scholzpdx
In asking that, did you also notice he says its slower then his E5400 here and slower then his E8500 there? I very well doubt he has what he's talking about.
Click to expand...

Unless... his E8500 is at 3.8ghz, his E5400 is at 3.5ghz. It is entirely conceivable (to me) that SuperPi does not benefit from the increased cache & tweaks of the E8500, and is simply scaling with raw clock speed. In that case, his E5400 & E8500 scores should be very similar.

 
Originally posted by: Scholzpdx
Originally posted by: aigomorla
Originally posted by: heyheybooboo
This is a troll post.

From Tom's

posted by: PsychoSaysDie
I have an X3 @ 3.8Ghz that does the 1M test in 18 seconds but my C2D E8500 @ 3.8 Ghz did the test in 11 Seconds. Does that mean the C2D is just faster all around? I'm playing with this new processor and it feels so much slower then my I7 even at 2.66ghz. What gives? Superior Intel architecture?
Click to expand...
Click to expand...

whats wrong with asking on both sites?

And i dont see in any way how he's pushing 1 class over the other with false info.

He's asking a true question, which is faster, and why.
Click to expand...

In asking that, did you also notice he says his Phenom X3 720is slower then his E5400 here and slower then his E8500 there? I very well doubt he has what he's talking about.

Troll..
Click to expand...

E8500 @3.8GHz in 11 seconds versus E5400 @ 3.5Ghz in 12 seconds. I see no inconsistency, the OP could very well have both an E5400 and an E8500.

The question is legitimate, the data do not seem inconsistent. Why are folks so intent on whipping out pitchforks and lighting their torches this good friday afternoon?

The only thread-crapping I sees going on here, is well, the self-evident kind to which some of us are currently attempting to address in a cordial and polite manner...
 
Originally posted by: Scholzpdx
Originally posted by: aigomorla
Originally posted by: heyheybooboo
This is a troll post.

From Tom's

posted by: PsychoSaysDie
I have an X3 @ 3.8Ghz that does the 1M test in 18 seconds but my C2D E8500 @ 3.8 Ghz did the test in 11 Seconds. Does that mean the C2D is just faster all around? I'm playing with this new processor and it feels so much slower then my I7 even at 2.66ghz. What gives? Superior Intel architecture?
Click to expand...
Click to expand...

whats wrong with asking on both sites?

And i dont see in any way how he's pushing 1 class over the other with false info.

He's asking a true question, which is faster, and why.
Click to expand...

In asking that, did you also notice he says his Phenom X3 720is slower then his E5400 here and slower then his E8500 there? I very well doubt he has what he's talking about.

Troll..
Click to expand...

Oh lord. I've been comparing pi numbers against every processor i've ever owned. In the past 6 months i've had the following...

E5400
X4 920
E8500
920 I7
7750 X2

Want some proof? Ofcourse you do

http://i234.photobucket.com/al.../BlackTTC6/38ghzX3.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/4931.jpg
http://i234.photobucket.com/al...ackTTC6/futuremark.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/4761.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/4800.jpg
http://i234.photobucket.com/al...ckTTC6/Picture1245.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/3800.jpg
http://i234.photobucket.com/al...88/BlackTTC6/E5400.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/4200.jpg
http://i234.photobucket.com/al...8/BlackTTC6/4ghz-1.jpg


Just because i didn't word both threads EXACTLY the same doesn't make me a troll... Moron
 
Originally posted by: Rick James
Originally posted by: Scholzpdx
Originally posted by: aigomorla
Originally posted by: heyheybooboo
This is a troll post.

From Tom's

posted by: PsychoSaysDie
I have an X3 @ 3.8Ghz that does the 1M test in 18 seconds but my C2D E8500 @ 3.8 Ghz did the test in 11 Seconds. Does that mean the C2D is just faster all around? I'm playing with this new processor and it feels so much slower then my I7 even at 2.66ghz. What gives? Superior Intel architecture?
Click to expand...
Click to expand...

whats wrong with asking on both sites?

And i dont see in any way how he's pushing 1 class over the other with false info.

He's asking a true question, which is faster, and why.
Click to expand...

In asking that, did you also notice he says his Phenom X3 720is slower then his E5400 here and slower then his E8500 there? I very well doubt he has what he's talking about.

Troll..
Click to expand...

Oh lord. I've been comparing pi numbers against every processor i've ever owned. In the past 6 months i've had the following...

E5400
X4 920
E8500
920 I7
7750 X2

Want some proof? Ofcourse you do

http://i234.photobucket.com/al.../BlackTTC6/38ghzX3.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/4931.jpg
http://i234.photobucket.com/al...ackTTC6/futuremark.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/4761.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/4800.jpg
http://i234.photobucket.com/al...ckTTC6/Picture1245.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/3800.jpg
http://i234.photobucket.com/al...88/BlackTTC6/E5400.jpg
http://i234.photobucket.com/al...e88/BlackTTC6/4200.jpg
http://i234.photobucket.com/al...8/BlackTTC6/4ghz-1.jpg


Just because i didn't word both threads EXACTLY the same doesn't make me a troll... Moron
Click to expand...

IF you actually did own all that hardware, then why on earth would you ask such a noob question here? If you know so much about overclocking and have invested so much into it, you should already know as much about the programs you would benchmark them with.
 
I see no troll issue here. Please stop using that word, or I will have to warn anyone in this thread about it.

And OP, no more reference to moron. Again, this is the last warning before lock,

CALM DOWN !!!!
 
Originally posted by: Markfw900
I see no troll issue here. Please stop using that word, or I will have to warn anyone in this thread about it.

And OP, no more reference to moron. Again, this is the last warning before lock,

CALM DOWN !!!!
Click to expand...

😀

I'm always calm mark haha
 
Originally posted by: Flipped Gazelle
I just had pizza pi. I eat it noticeably faster when I'm on my Intel PC, as opposed to my AMD one.
Click to expand...

If you want to COOK your pizza fast nothing beats four instances of super pi on a B3 Q6600 at 3.6/1.5+ Volts. :laugh:
 
Originally posted by: Rubycon
Originally posted by: Flipped Gazelle
I just had pizza pi. I eat it noticeably faster when I'm on my Intel PC, as opposed to my AMD one.
Click to expand...

If you want to COOK your pizza fast nothing beats four instances of super pi on a B3 Q6600 at 3.6/1.5+ Volts. :laugh:
Click to expand...

LOL

I don't have the DOUGH... 😉
 
Originally posted by: Idontcare
Why are folks so intent on whipping out pitchforks and lighting their torches this good friday afternoon?
Click to expand...

Did you miss the memo?

Good Friday is traditionally about getting your pitchfork groove on...
 
Originally posted by: PlasmaBomb
Originally posted by: Idontcare
Why are folks so intent on whipping out pitchforks and lighting their torches this good friday afternoon?
Click to expand...

Did you miss the memo?

Good Friday is traditionally about getting your pitchfork groove on...
Click to expand...

That is DARK humor right there folks...me likes!
 
SuperPi likes large cache and/or low latency memory. In fact it just likes low latency all around which is why it likes cache so much.

Getting sub-20s in SuperPi with an AMD processor is actually quite an accomplishment.
 
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