Anandtech + Phenom 9850BE + SB750 = 3.2ghz - CPU & Components
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 Thread : Anandtech + Phenom 9850BE + SB750 = 3.2ghz
 
dattimr
Poetry in motion
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n°1841559
07-21-2008 at 02:37:23 PM

UPDATED: http://www.anandtech.com/cpuchipse [...] i=3360&p=1

 

http://www.anandtech.com/weblog/showpost.aspx?i=471

 
Quote :

After a few tweaks and reboots, we reduced our core voltage from 1.4250V to 1.3875V, increased our NB speed from 2.2GHz to 2.4GHz, and changed our clock multiplier from 15.5 to 16 giving us a 3.2GHz core clock speed. This is an instant 100MHz increase in core speed while decreasing core voltages by 3%, increasing NB clock speed by 9%, and improving memory latencies up to 6% (all important L3 cache). These results were completed with ACC on set and forget auto settings.

 

We have reached 3.3GHz on this CPU with further tuning of system settings including individual core tuning with ACC. While are initial 100MHz speed increase may not sound impressive, we must consider the fact that this CPU was right on the ragged edge of stability at 3.1GHz. We are now able to run higher NB clock speeds and higher core clock speeds at lower voltages while maintaining a fair amount of headroom for further performance improvements. Even more impressive (results tomorrow) is that fact that this CPU will now clock to 3GHz on stock voltages instead of 2.7GHz before tuning with ACC.

 

Looking good so far. Hope they make it with Captain Dirk.

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Message edited by dattimr on 07-24-2008 at 02:52:10 PM
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homerdog
Overclocked and Undervolted
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n°1841561
07-21-2008 at 02:56:00 PM

Good news; I wonder how much of a limiting factor the NB clock is. I seem to remember reading somewhere that it was a significant bottleneck for the Phenoms. Maybe 45nm will help in this regard.

Hah, found it: http://techreport.com/articles.x/14093/2

Quote :

As you may know from this page of our Phenom review, among other sources, the Phenom architecture's memory access latency and overall performance is affected quite a bit by the speed of the chip's L3 cache. That cache runs at the speed of the chip's north bridge, not the CPU core clock, so there's some real performance potential hiding in the Phenom's north bridge clock.


Message edited by homerdog on 07-21-2008 at 03:01:39 PM
radnor
Speed Demon
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n°1841562
07-21-2008 at 02:57:07 PM

dattimr wrote :



Looking good so far. Hope they make it with Captain Dirk.



Captain Dirk "Open the Duron bays, and lets wreck havok with the Thunderbirds"

Good old, geek jokes. For our own good i hope it is successful.

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dario77
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n°1841564
07-21-2008 at 03:13:08 PM

radnor wrote :

Captain Dirk "Open the Duron bays, and lets wreck havok with the Thunderbirds"

Good old, geek jokes. For our own good i hope it is successful.



hahahaha!!! i remember the days, brother!
maybe its just me, but i can't help but feel a nudge more hopeful with dirk at the wheel. and if sb750 turns out to be even half of what they said it would...looks like a good time for him to've taken the reins. this reflects well for the green camp!!!
now lets see those 780g boards come down in price around 10-15 bucks!!!

cah027
Go to www.hartsbatteries.com
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n°1841571
07-21-2008 at 03:45:52 PM

I would like to see some video encoding benchmarks. That is the main purpose for my next build.

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3Ball
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n°1841575
07-21-2008 at 03:58:44 PM

I hope they do a review of the system with a core2quad at 3.2ghz as well. I am fully aware which system would be faster, but I would like to see the results side by side for reference at the higher clock speeds. Nice to see a shed of light (small though it be) from the green guys (even though its more or less Anand producing the results lol) atleast we can see that there is something positive churning about.

Best,

3Ball

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Message edited by 3Ball on 07-21-2008 at 03:59:27 PM

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jimmysmitty
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n°1841578
07-21-2008 at 04:15:49 PM

radnor wrote :

Captain Dirk "Open the Duron bays, and lets wreck havok with the Thunderbirds"

Good old, geek jokes. For our own good i hope it is successful.



WOOT!!!!!!!! Talk about old school.

cah027 wrote :

I would like to see some video encoding benchmarks. That is the main purpose for my next build.



3Ball wrote :

I hope they do a review of the system with a core2quad at 3.2ghz as well. I am fully aware which system would be faster, but I would like to see the results side by side for reference at the higher clock speeds. Nice to see a shed of light (small though it be) from the green guys (even though its more or less Anand producing the results lol) atleast we can see that there is something positive churning about.

Best,

3Ball



^Agreed. I unfortunately hope people understand that if there is a review then you have to take OCing into account especially if you are considering this or a C2Q. My only question is whats the power drain and does the TDP raise along with the heat.

I am also pretty sure that certain CPUs will best it but a few tests would be nice. What sucks though is for those who bought a AM2 board just for the upgrade path and they wont be able to OC as easily like those who are willing to buy a new mobo if they had one before or are building a new system.


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n°1841588
07-21-2008 at 04:41:33 PM

they probably didnt release the temps cause they are through the roof. i wouldn't be too surprised if they are liquid cooling it.

jimmysmitty
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n°1841593
07-21-2008 at 04:46:01 PM

^LMAO

Thats funny right there.....

I don't think so but still the voltage isn't that bad. But they need to Prime95 stability test it for 8-12 hours before I believe its stable. Sorry but I cannot trust a OCing system made by the CPU company.

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dattimr
Poetry in motion
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n°1841594
07-21-2008 at 04:46:07 PM

Just asking, since I'm not an expert at all: don't those memory benchmarks look "strange" if compared to C2Q's? The latency looks a bit high - and the read and write values a bit low -, if taking into consideration that it uses an IMC.

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dattimr
Poetry in motion
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n°1841597
07-21-2008 at 04:48:10 PM

Quote :

Even more impressive (results tomorrow) is that fact that this CPU will now clock to 3GHz on stock voltages instead of 2.7GHz before tuning with ACC.



In this scenario I don't think that temps will be an issue. However, above 3.2...

wisecracker
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n°1841598
07-21-2008 at 04:51:24 PM

The 3.2GHz - 3.3GHz OC was with a 9850BE - - not the 9950BE

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dattimr
Poetry in motion
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n°1841600
07-21-2008 at 04:54:47 PM

wisecracker wrote :

The 3.2GHz - 3.3GHz OC was with a 9850BE - - not the 9950BE



Sorry and thanks about that. Fixed. =)

homerdog
Overclocked and Undervolted
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n°1841611
07-21-2008 at 05:16:22 PM