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1M SuperPi 1m 50s with Phenom

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  • CPUs
  • Phenom
Last response: in CPUs
February 4, 2009 6:53:57 AM

My friend just built a Phenom X4 9550 system with an Asus board and 4 gigs of ram. This seems like it should be pretty fast but it calculated 1 million digits of pi in superpi in 1 minute 50 seconds. My Q6600 did it in 21s at default settings. Shouldn't that AMD be around 30 at least?

What could be causing this? He has tried XP and Vista and got the same results in both.

More about : superpi 50s phenom

February 4, 2009 7:25:35 AM

Sorry, I meant Phenom 9950; not that it matters
February 4, 2009 12:30:21 PM

Not a chance in hell
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February 4, 2009 3:14:51 PM

Whats the specs on your friends RAM? Super Pi is single threaded and is more reliant on clock speed and RAM speed and timings, along with L2 Cache. Did you OC, and did he? I assume not as you say you were at default settings.
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February 4, 2009 3:46:34 PM

Superpi greatly favors intels arch. there's probably nothing wrong with your friends setup/cpu. You could run 3dmark06 on it and compare that cpu score with yours...
February 4, 2009 3:50:06 PM

Nonsense, everyone knows that superpi is the only benchmark anyone should ever look at.

(I'm being sarcastic of course.)
February 4, 2009 6:13:54 PM

Scrap my post, read OP wrong.
February 4, 2009 7:44:47 PM

ok downloaded and ran the 3d mark 6 program at its default settings res 1200 x 1024 on the Amd x4 9950 system stock settings and the cpu score matched the intel Q6600 on stock settings.

Amd sytem : is a x4 9550 black edition with stock cpu cooler
Asus m3a78 mobo and using the onboard graphics utilizing the vga out. ( monitor doesn't support hdmi)
4 gigs of gskill ram ddr 800 at 4-4-4-12
vista 64 bit on a 320 gig sata HD

3d mark score : 1594
sm 2.0 : 516
sm 3.0 : 599
CPU : 3440

super Pi at 1M in 1min 50 sec.

Vista score: processor 5.9
ram 5.9
graphics 4.2
gaming graphics 4.0
Hard disk 5.9


vs. my roommates intel system on stock settings for comparison:

Intel Q6600, Nvidia 9800gtx+ utilizing Dvi out, 8 gigs of ram ddr800, Asus p5k deluxe wifi mobo, Vista 64 bit on 80 gig IDE HD.

3dmark score: 12228
sm 2.0 : 4927
sm 3.0 : 5644
CPU : 3436

super pi at 1M in 21 sec.

vista score: processor 5.9
ram 5.6
graphics 5.9
gaming graphics 5.9
Hard Disk 5.3

So what do People think is the AMD fine even though it does Pi slower than the P4 2.8 ghz ( 1M pi in 1min 5 sec ) i upgraded from ? Could the onboard graphics be slowing it ? What could be causing it to do pi so much slower ? saw post about super pi favoring intels, but by 1min and 29 sec ? Runs progams fine but they do open a little slower than my roommates system.
February 4, 2009 9:23:26 PM

I remember some big problem with Phenom boards when they came out. Anyone know anything about that? TLB or TLP bug or somethin like that? Could that be the problem?

Looks like all is well I guess, but I could have swore I've seen stock phenom xx50's running that benchmark in the 30-40 range
February 4, 2009 10:50:52 PM

nkarasch said:
I remember some big problem with Phenom boards when they came out. Anyone know anything about that? TLB or TLP bug or somethin like that? Could that be the problem?

Looks like all is well I guess, but I could have swore I've seen stock phenom xx50's running that benchmark in the 30-40 range


Quote:
The bug was fixed in the 550's. I'm going to tell him to look into the driver situation. What kind of power supply does he have?


the bug was only an issue in AMD lab, as I don't think anyone ever been able to reproduce it. I have a 9500 running 24/7 without any problem. That with an ECS motherboard...

The problem I think is RAM voltage. I think this RAM need more voltage to work. I would try to increase the voltage one step at the time. This is done in BIOS. Other than that, if VISTA power management is set to anything than performance, your CPU is running half its speed. My friend ran his c2q6700 half the speed for a long time... and found his CPU to be faster once he adjust the power management...
February 5, 2009 12:42:47 AM

I don't deal with AMD, but my i7 clocked at 15 seconds (1M), and @3.8 it was just a hair over 10 seconds.

Probably doesn't make you feel any better, but it is a comparison
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February 5, 2009 2:17:20 AM

pat said:
the bug was only an issue in AMD lab, as I don't think anyone ever been able to reproduce it. I have a 9500 running 24/7 without any problem. That with an ECS motherboard...

The problem I think is RAM voltage. I think this RAM need more voltage to work. I would try to increase the voltage one step at the time. This is done in BIOS. Other than that, if VISTA power management is set to anything than performance, your CPU is running half its speed. My friend ran his c2q6700 half the speed for a long time... and found his CPU to be faster once he adjust the power management...

Not true at all. If the vista power management is set to anything but performance, the CPU will idle at half its max speed. It will jump up to full speed under load though.
February 5, 2009 1:21:51 PM

Shadow something is very wrong with your system. I have a simular setup and get 25 sec for Super Pi. It could be something with the hardware, but that is very hard to diagnoise. Double check that everything is correctly installed and properly powered and really check it. Ensure that you have all the correct vista 64 bit drivers. Comb through the bios to check every setting and install the newest MB software. Do you have the latest bios installed? At first I didn't understand the 3D score you were posting. I thought that you were leaving off the last digit. At 3.1ghz I get a 3D mark score of 15028. Something about you setup is either broken or incorrectly setup. Post more about the setup. You need to post the exact model MB I see several on the Asus site and for example the"A3A78-EMH-HDMI" has had 8 bios updates the latest being 1105. If you still have 0203 bios that could be the problem or part of it. Post a CPU-Z and GPU-Z score. You are postiong that the mem is 4-4-4-12. Are you saying that indeed the mem is running at those timings or is that what they are rated at? Again I have mem rated for 4-4-4-12 but only in later bios updates would the MB allow those timings.

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February 5, 2009 5:45:04 PM

When I first built my Sempron rig, I had a bios setting called "enable L3 cache". Well, since I knew the Sempron didn't have any L3 cache, I decided to disable that setting. Big mistake. My super pi times were terrible. When I compared my times with other Sempron rigs, I noticed how slow mine was in comparison. I went back into the BIOS, and after switching on "L3 cache", the cpu performed much better in super pi, and also much better overall. You might want to see if you have such settings in your own bios.

Super pi 1M time for my Sempron Le-1100 1.9GHz 256kb l2 cache single core CPU and DDR2 667 dual channel ram is 49 seconds, btw. There is something seriously wrong with your setup.
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February 5, 2009 9:37:36 PM

My 7 year old AMD Sempron will run SuperPi 1M in 90sec. My E8500 CAD workstation runs it in 12 sec. My wife's tiny 1.4GHz Toshiba Laptop runs it in 30 sec.
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February 5, 2009 10:32:55 PM

my laptop does super pi to 1 milion in 16.8 sec . whats wrong with AMD ?
February 5, 2009 11:54:13 PM

There's definitely something wrong with the initial setup here. AMD runs SuperPi slower than Intel due to architectural differences (that don't show themselves near so strongly in actual, real-world apps), but nearly 2mins is SLOW.
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February 6, 2009 12:49:27 AM

that's what I ment , something wrong there . I have 3 AMD comps and none run super pi that slow ! 2 opteron 180 and 1 AM2 5000 oveclocked . I forget the scores but under 1minute I think .
February 6, 2009 1:17:46 AM

superpi is for intel chips bro, not amd :) 
Anonymous
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April 14, 2009 7:46:29 PM

I had the same issuez with the throttling and low scores, that is because Phenom 9950 needs 140W motherboard, change your Asus m3a78 and buy another mobo that supports 140w cpu's !!!