Intel Core Duo (Yonah) Performance Preview - Part II
by Anand Lal Shimpi on December 19, 2005 12:55 PM EST- Posted in
- CPUs
Final Words
With updated benchmarks and a more level playing field comparison to the Pentium M and Athlon 64 X2, we're truly able to see the potential of Intel's Core Duo processor. Our initial analysis still holds true, that for a notebook processor, the Core Duo will be nothing short of amazing for professionals. Looking at the performance improvements offered everywhere from media encoding to 3D rendering, you're going to be able to do a lot more on your notebook than you originally thought possible (without resorting to a 12-pound desktop replacement). In the past, power users on the go had to sacrifice mobility for CPU power, but with the Core Duo, that is no longer the case. You will still most likely have to resort to something larger if you need better GPU performance, but at least your CPU needs will be covered. The one thing that Intel's Core Duo seems to be able to do very well is to truly bridge the gap between mobile and desktop performance, at least in thin and light packages.
But what about the bigger picture? What does our most recent look at the performance of Intel's Core Duo tell us about future Intel desktop performance? We continue to see that the Core Duo can offer, clock for clock, overall performance identical to that of AMD's Athlon 64 X2 - without the use of an on-die memory controller. The only remaining exception at this point appears to be 3D games, where the Athlon 64 X2 continues to do quite well, most likely due to its on-die memory controller.
The problem with the Core Duo is that its clock speeds aren't going to be quite high enough to be competitive, on the very high end, with AMD. Luckily for Intel, Conroe should be able to offer higher clock speeds without much of a performance penalty, thanks to its 4-issue core. It is always interesting to note that Intel's marketing focus is moving away from focusing on ILP (Instruction Level Parallelism), yet one of its biggest features of their next-generation microarchitecture is a significant increase in ILP.
Honestly, as it stands today, if Intel can get clock speeds up, the only area that they will need to improve on is gaming performance to be competitive with AMD. We wouldn't be too surprised if the comparisons that we have shown today end up being very similar to what we encounter at Conroe's launch: with AMD and Intel performing very similarly at the same clock speeds, but with AMD's on-die memory controller giving it the advantage in gaming.
Intel's Core Duo launches in January at CES, so if you've been thinking about buying a new laptop, we'd suggest waiting at least another month or so. You won't be disappointed.
With updated benchmarks and a more level playing field comparison to the Pentium M and Athlon 64 X2, we're truly able to see the potential of Intel's Core Duo processor. Our initial analysis still holds true, that for a notebook processor, the Core Duo will be nothing short of amazing for professionals. Looking at the performance improvements offered everywhere from media encoding to 3D rendering, you're going to be able to do a lot more on your notebook than you originally thought possible (without resorting to a 12-pound desktop replacement). In the past, power users on the go had to sacrifice mobility for CPU power, but with the Core Duo, that is no longer the case. You will still most likely have to resort to something larger if you need better GPU performance, but at least your CPU needs will be covered. The one thing that Intel's Core Duo seems to be able to do very well is to truly bridge the gap between mobile and desktop performance, at least in thin and light packages.
But what about the bigger picture? What does our most recent look at the performance of Intel's Core Duo tell us about future Intel desktop performance? We continue to see that the Core Duo can offer, clock for clock, overall performance identical to that of AMD's Athlon 64 X2 - without the use of an on-die memory controller. The only remaining exception at this point appears to be 3D games, where the Athlon 64 X2 continues to do quite well, most likely due to its on-die memory controller.
The problem with the Core Duo is that its clock speeds aren't going to be quite high enough to be competitive, on the very high end, with AMD. Luckily for Intel, Conroe should be able to offer higher clock speeds without much of a performance penalty, thanks to its 4-issue core. It is always interesting to note that Intel's marketing focus is moving away from focusing on ILP (Instruction Level Parallelism), yet one of its biggest features of their next-generation microarchitecture is a significant increase in ILP.
Honestly, as it stands today, if Intel can get clock speeds up, the only area that they will need to improve on is gaming performance to be competitive with AMD. We wouldn't be too surprised if the comparisons that we have shown today end up being very similar to what we encounter at Conroe's launch: with AMD and Intel performing very similarly at the same clock speeds, but with AMD's on-die memory controller giving it the advantage in gaming.
Intel's Core Duo launches in January at CES, so if you've been thinking about buying a new laptop, we'd suggest waiting at least another month or so. You won't be disappointed.
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fitten - Tuesday, December 20, 2005 - link
Yup... as I posted above... the rumor is that Yonah was designed for 2.5GHz (maybe even 2.6GHz or so) and can easily be overclocked to those speeds but is being launched at the speeds it is for exactly what you say... to fit in a certain power envelope.Xenoterranos - Tuesday, December 20, 2005 - link
We'll, that's definitely a logical argument, but I'd say only marginally relavent to this discussion. If a laptop with X% better power consumption comes out, does it really matter in the end where those X% came from. I can see the validity in saying that maybe some of those optimizations are on the board and thus the CPU shouldn't be given all the credit, but lower consumption is lower consumption. But that's all hypothetical. The reality is that even without optimizations, the Pentium M would have enjoyed lower power consumption just by moving to the 65nm proccess, as would any proccessor. that's where most of that 30% came from. I'd venture to say that the board design provides 1 or 2 % max, and definitely within the margin of error.><eno
Xenoterranos - Tuesday, December 20, 2005 - link
Um, i got confused there a bit. I'm basically saying that the new "Core Duo" derives the majority of it's efficiency not from any architectual changes (although they do help a lot), but from the move to 65nm. When AMD makes that jump to (and if Intel hasn't already gone to 45nm) then you'll see AMD pull ahead in power consumption on all 65nm parts, if not performance as well. Remember, aside from the on-die controller, this new architecture is very similar to what AMD is doing. Like the author said, if they wanted to copy something, they should at least copy the serial bus!Betwon - Tuesday, December 20, 2005 - link
All one know that Dothan is 90nm.But it is very cool. hot == Intel's 90nm? No!The CPU's architecture of low power consume is key. We must understand that IC design is very complex, many advanced tech are applied to keep CPU cool, include the CPU's architecture(such as micro-ops fusion).
Furen - Tuesday, December 20, 2005 - link
Yonah is better? It seems to be like its a pretty even match clock-for-clock but if you consider that X2s max out at 2.4GHz (currently) and Yonah will launch in around 15 days at 2.13GHz (the FX-60 is supposed to launch around the same time, so the X2 max clock may hit 2.6GHz when Yonah arrives) then it is clearly inferior in the performance department. Granted, the power consumption is quite a bit better but I'd hardly say that the CPU is better, just better suited for low-power applications.Betwon - Tuesday, December 20, 2005 - link
Yonah(2GHz/L2 2M) is better than AthonX2(2GHz/L2 2M) in the many cases.Everyone also believe that Yonah is able to reach the very high frequency.
In the past, We also known that PM can be overclocked better than A64. The PM's best record of Super Pi is much fast than A64/FX.
Zebo - Monday, December 19, 2005 - link
Yonah Yonah Yonah... Nah it was hype as I suspected... these procesors are vitually identical to AMD's old A-64's.. AMD supposed to get signifigant bumps w. DDR2/3 and PCIe onboard plus I read about some technology AMD and IBM made to increase performance by a whopping 40%!!http://www.guru3d.com/newsitem.php?id=3370">http://www.guru3d.com/newsitem.php?id=3370
AMD has nothing to fear other than in power arena when longer pipe Conroe comes and even then that advantage may very well disappear.
IntelUser2000 - Tuesday, December 20, 2005 - link
The 40% advantage is TRANSISTOR performance. Even then, its 40% advantage when no straining is included at all. AMD has strained silicon in their current process. Which means real advantage is FAR less than 40%.Shintai - Monday, December 19, 2005 - link
PCIe onboard is not a speed advantage. It´s more a tactic move towards the the computer on a chip solution.AMD is keen on ondie memory controller and in some years PCIe aswell due to the fact they suck at chipsets. Sure nVidia is making some good ones now. But it´s always been Intels extra strong point.
PCIe would also gives less traces on the motherboard that gives lower cost. But your CPU will break the 1300pin mark atleast and will be unable to scale in any way. Like AMDs backwards setting with DDR. When some new PCIe or more PCIe lanes comes out. You would need a new socket.
However personally I´m in favour of it. I just think AMDs ondie solutions is the wrong way. On package seems alot better and more flexible. Until we have an even more stagnant development cycle for external parts.
stateofbeasley - Monday, December 19, 2005 - link
DDR2 advantage? I wouldn't count on it. The latency on DDR2 still sucks compared to DDR. I wouldn't be so quick to scoff - Yonah performs as well as the X2 while consuming only a fraction of the electrical power.I don't see why people thought Yonah was going to be some sort of X2 destroyer. Its execution core has far fewer units than K8 and it lacks an on-die memory controler. The fact that it can match an X2 with slimmer cores makes it all the more impressive. The only hype was in your mind.
The AMD/IBM technology is not in processors that we can benchmark today -- they have yet to bring this process to mass manufacturing.