Yonah v Conroe Power consumption

[ibby]

Since they are based on the same arcitecture, it would be intresting on which chip was more efficient per watt.

I know the Yonah is mobile, so it theroy it should draw less power...

Has any one got any links for reviews ... or other information that they have come across.

Before some one comes out with a smart assed comment ... its not xtremepowersaving ... its xtremesystems ... Thanks i know!

[hot_fifty]

yonah is also just 32-bit..

[wwwww]

This is not xtremepowersaving ... its xtremesystems

:P

sorry...well Yonah has a TDP of 31W iirc and Conroes will be 65W and 95W for the EE (from memory - I maybe slightly off).

[iterations]

Ibby the proper comparison is Yonah versus Merom. Merom is the mobile part based on the same microarchitecture as Conroe.

And the answer is Merom has better performance/watt. In many tests it scores 10-20% higher than Yonah, while using the same amount of energy. So by definition, it can do more work with the same energy, so it has better performance/watt.

There will be an embargo lifted on the Conroe chips soon and you will start to see many more public reviews of them, probably followed up by Merom reviews.

[ibby]

thanks guys.

[Kris]

For those of us with yonah laptops will merom be a drop in replacement?

[JumpingJack]

Merom, the Core 2 analog will be 20% faster at the same power dissipation, there are plenty of Merom/Yohna comparision benches in this forum to make the compare.

[lowfat]

Pretty sure the arcitecture isn't similar at all. A Yonah is similar to a Dothan, Core 2 is something all together different.

[uclajd]

This is not xtremepowersaving ... its xtremesystems

Of course, if one has a dual cascade that maxes out at 80W, then they are both related.

[s7e9h3n]

Pretty sure the arcitecture isn't similar at all. A Yonah is similar to a Dothan, Core 2 is something all together different.

Nope, other way around....Yonah's Core Duo architecture - more similar to Merom and Conroe's Core2

[C_B]

Nope, other way around....Yonah's Core Duo architecture - more similar to Merom and Conroe's Core2

http://img349.imageshack.us/img349/6186/cpu39153jn.jpg

didn´t think so ....

Core Duo (Yonah) is a Pentium M based architecture
merom is a new design

CB

[s7e9h3n]

didn´t think so ....

Core Duo (Yonah) is a Pentium M based architecture
merom is a new design

CB

Courtesy of Intel's Website:

As with the Intel® Pentium® processor brand, use of the number "2" signals the arrival of the next generation of technology to the Intel® Core™ processor line. In order to be consistent with our current Intel Core processor naming, we are continuing to use "Duo" to creatively and effectively indicate Intel® dual-core technology.

[iterations]

Yes, all branding aside, Stephen, Yonah is similar to Dothan, but Merom is largely a new design, with over 80% of the die redesigned, and many novel concepts added. 4-issue vs. 3-issue core, 4mb shared cache with ultrafine grained power control, 128-bit wide SSE engine, memory disambiguation for speculative loads, etc...

[uOpt]

Yonah is closer to Merom and Core2 than to the Pentium-M. Mosstly it lacks 64 bit support and a few additional processing units.

[Salvador]

This is not xtremepowersaving ... its xtremesystems

:P

sorry...well Yonah has a TDP of 31W iirc and Conroes will be 65W and 95W for the EE (from memory - I maybe slightly off).

Nope, 95W got ditched when Intel ditched 3,3Ghz/1333FSB.
Conroe is:

X6800 -> 75W
E6700 -> 65W
E6400 -> 45W

I think.

[C_B]

Yonah is closer to Merom and Core2 than to the Pentium-M. Mosstly it lacks 64 bit support and a few additional processing units.

sorry
average users think like you but you err

please have a look on Intels processor design sheets ...

CB

[Mats]

Jus look at some benchmarks and you'll see that Yonah doesn't have those low scores in some tests (is it FPU intensive???) like the PM. Ok, it's no proof that it's closely related to Merom just because of that, but it's certainly not two PM's put together.

[perry_78]

hmm, C_B or steven? difficult call

[Gautam]

C_B and iterations are correct. The Yonah is architecturally somewhat like two Dothans put together (I won't say fused, because it isn't).

As far as architecturally changes are concerned, Yonah->Merom has a lot more than Dothan->Yonah; the ones that iterations listed.

Real performance also reflects this pretty well. The new Celeron M's, and in fact even the Yonahs are very close clock for clock to Dothans, but the Merom is a very large jump forward. (Not bringing SuperPI into the picture)

Of course, it might be hard to stomach, since Yonahs and Meroms both use the same socket, and have similar logos. :p But they are in reality two completely different animals.

[s7e9h3n]

Real performance also reflects this pretty well. The new Celeron M's, and in fact even the Yonahs are very close clock for clock to Dothans, but the Merom is a very large jump forward. (Not bringing SuperPI into the picture)

Why not? It's the only thing that matters