Interesting INQ art on SOI cpu overclocking

[AJL]

AMD's SOI is scary but good (http://www.theinquirer.net/?article=10949)

Make sense to me since the Barton I tried about a month ago did 3200+ (2.2Ghz) at stock (or there abouts) and took a bazillion volts (2.15 I think) to get to 2.4Ghz :rolleyes:

[NookieN]

As far as I know, Barton chips are not made with SOI. That's strictly for Hammers.

[Since87]

The author of that Inquirer article, has so little understanding of what he is writing about, that I don't consider any of the technical information he presents meaningful.

[AJL]

Doh! <- I'm with stupid. I was thinking about the rumored SOI Bartons at the time and just blabbed away :o Sorry....

[star882]

"Make sense to me since the Barton I tried about a month ago did 3200+ (2.2Ghz) at stock (or there abouts) and took a bazillion volts (2.15 I think) to get to 2.4Ghz"
You got mixed up, it's the Britney that uses SOI, not the Barton.
I don't know how well a Britney can overclock, but since it gives off 130w of heat @ stock, water cooling or phase change will be required for any large overclock.

[AJL]

Britney???

[aftermath]

do u mean the thonton? which is a barton with only 256k cache? dount know why thats not a t-bread?

[star882]

"do u mean the thonton? which is a barton with only 256k cache? dount know why thats not a t-bread?"
Nope, the Britney is the CPU with an integrated 128 bit DDR controller.

[aftermath]

so its a k8?? ill get used to these code-words eventuly :)

[JDXNC]

Originally posted by star882
"do u mean the thonton? which is a barton with only 256k cache? dount know why thats not a t-bread?"
Nope, the Britney is the CPU with an integrated 128 bit DDR controller.

Where is this "britney" stuff coming from??? No one else has ever heard of it :rolleyes:

Also... we have a quote function like I have just used, it makes your post much easier to read, lean to use it ;)


Edit: If you will refer to the current AMD roadmap, there is NO BRITNEY listed:

http://www.amd.com/us-en/assets/content_type/styleone/roadmap5_14_03.gif

You can also see that SOI is only in the K8 line.

[Since87]

Originally posted by JDXNC


Where is this "britney" stuff coming from??? No one else has ever heard of it :rolleyes:

Also... we have a quote function like I have just used, it makes your post much easier to read, lean to use it ;)

star882 tends to call anything he likes britney, and refuses to quote legibly after having it suggested to him probably 20 times at least.

I suggest adding him to your ignore list.

Handy link to do so on the lower right of this page. (http://forum.oc-forums.com/vb/member.php?action=getinfo&userid=25969)

[JDXNC]

Originally posted by Since87


star882 tends to call anything he likes britney, and refuses to quote legibly after having it suggested to him probably 20 times at least.

I suggest adding him to your ignore list.

Handy link to do so on the lower right of this page. (http://forum.oc-forums.com/vb/member.php?action=getinfo&userid=25969)


Thnak you ;) It wasn't the first time I suggested it either.

[james.miller]

Originally posted by star882
"Make sense to me since the Barton I tried about a month ago did 3200+ (2.2Ghz) at stock (or there abouts) and took a bazillion volts (2.15 I think) to get to 2.4Ghz"
You got mixed up, it's the Britney that uses SOI, not the Barton.
I don't know how well a Britney can overclock, but since it gives off 130w of heat @ stock, water cooling or phase change will be required for any large overclock.

thats the funniest thing ive heard for a long time, star882. If nothing else, you are funny.

SOI-based cpu's have the lowest heat output of any cpu to date. DO you think that opterons would be running in 1u servers with tiny little heatsinks and fans if they put out 130watts of heat?

[NookieN]

Originally posted by james.miller
SOI-based cpu's have the lowest heat output of any cpu to date.

Whoa, slow down there. I think you might want to qualify that statement a bit more. They might put out somewhat less heat than current AthlonXPs and P4s at a comparable performance level. But they still take a fair amount of power and put out more heat than any P-III or P-M. SOI is helpful, but it's not a panacea.

[james.miller]

now, you know what i mean lol:eek:


the technology has the lowest heat output. THe cpu's still output more heat than say, a via c3, but then its 10 times faster as well lol

[Chowdy]

Maybe miller's right though? Clock an opteron down to 1.4 (fastest p3) and see how the temps stack up to a p3 of the same clockspeed...? Is that possible?

[NookieN]

Originally posted by Chowdy
Maybe miller's right though? Clock an opteron down to 1.4 (fastest p3) and see how the temps stack up to a p3 of the same clockspeed...? Is that possible?

From what I've read, an Opteron draws roughly the same amount of power as a Thoroughbred at the same clockspeed. So a 1400Mhz Tbred draws about 44W. Let's say the Opteron takes 40W. That's still almost twice the 21W used by a 1400Mhz P3. A 1400Mhz P-M (which would come closer to Operton's performance than the P3) takes 22W.

These figures are from sandpile.org and, while not exact, are close enough.

[james.miller]

what it draws is different to it's heat output, and again, the opterons are a lot faster.. if a 1.4ghz opteron did the same amount of work per cycle as a p3, then you can pretty much garuntee it'll run cooler.

[bulk88]

Originally posted by star882
"Make sense to me since the Barton I tried about a month ago did 3200+ (2.2Ghz) at stock (or there abouts) and took a bazillion volts (2.15 I think) to get to 2.4Ghz"
You got mixed up, it's the Britney that uses SOI, not the Barton.
I don't know how well a Britney can overclock, but since it gives off 130w of heat @ stock, water cooling or phase change will be required for any large overclock.

My MB's overcurrent protection kicks in after like 2.025 volts. Even though the MB goes to 2.2v. If I run it at like 2.05 after like 20 mintues the over current protection kicks in (8rda). :cry: :cry: :cry: :cry: :cry: :cry:

[NookieN]

Originally posted by james.miller
what it draws is different to it's heat output

Not really. CPUs are not doing mechanical work and don't produce significant amounts of EM radiation, so the vast majority of the electric energy you put into them must come out as heat. In fact, current CPUs (with or without SOI) are more effective at turning electric energy into heat than most heating elements.

and again, the opterons are a lot faster.. if a 1.4ghz opteron did the same amount of work per cycle as a p3, then you can pretty much garuntee it'll run cooler.

Yeah P3s are old and slow, that's why I threw a Pentium M (Banias) in there as well. They're a fair amount more powerful than P3s. An equivalently clocked P-M might not be able to beat an Opteron in desktop applications, but I wouldn't be at all surprised if it came close. And it would definitely produce less heat than the Opteron.

As a disclaimer, I'm not trying to say the Opteron is bad or a P3/P-M would be better. But anyone who thinks an Opteron/Athlon64 will run ice cold is in for a surprise. AMD hasn't released official TDP specs for the Opteron -- they only say that it produces at most 84.7W. That's not exactly a ringing endorsement for low-power applications.