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Yonah Review/Preview at Anandtech

post #1 of 60
Thread Starter 
http://anandtech.com/cpuchipsets/sho...spx?i=2627&p=1

Of Note
Quote:
At 2.0GHz, Yonah is basically equal to, if not slightly slower than an Athlon 64 X2 running at the same clock speed in virtually all of the tests we ran. The important distinction here is that Intel is able to achieve that level of performance, without an on-die memory controller. But there is also one more thing to note, Yonah can offer that level of performance with significantly lower power consumption:

Total System Power Consumption - Idle

Total System Power Consumption - Load

While the Yonah and Athlon 64 X2 systems consumed relatively similar power at idle, Yonah hardly eats up any more power under full load. In fact, a 2.0GHz Yonah under 100% load consumes less power than an Athlon 64 X2 3800+ at idle. Obviously Intel has the advantage of being on a much lower power 65nm process, but it won't be until the second half of next year before we see any Athlon 64 X2s at 65nm, so it is an advantage that Intel will have for quite some time.

Although we didn't consider it as such here today , Yonah will be quite impressive on notebooks. The thought of having such a cool running dual core processor in a notebook is honestly amazing, and the performance difference (especially for multitaskers) over what we have today will be significant. The other thing to keep in mind is that when you go from a single core to a dual core Pentium M notebook, you won't be giving up anything at all. On the desktop side, you normally give up clock speed for dual core support, but Yonah will be running at very similar frequencies to what Dothan is running at today. In other words, you won't be giving up single threaded performance in favor of multi-threaded performance - you'll get the whole package.
post #2 of 60

Huh?

Quote:
Yonah will be quite impressive on notebooks. The thought of having such a cool running dual core processor in a notebook is honestly amazing, and the performance difference (especially for multitaskers) over what we have today will be significant.
Thats a quote from the anandtech article on the same page that shows Yonah at 108w (!) under load compared to a 144w Athlon x2.

iirc,

mobile athlon64 = 62w
Turion ML37 = 37w
Dothan 2Ghz = 27w

If I'm missing something here, correct me, but 108w seems to be quite a lot for a mobile solution.

Does this 108w = the TDP envelope or is there a formula to use to covert power consumption into a TDP number that could be used to compare with current mobile parts?

Anandtech lists these graphs are "total system power consumption", are numbers available to compare total system power consumption to other existing mobile parts?
post #3 of 60
thats total power consumption. I would like it compared with current gen dothans and turions before I say anything.
post #4 of 60
Not so amazing results in my opinion, waiting for Turion64/Dothan/Taylor/Yonah comparison...
post #5 of 60
Keep in mind they were testing on a motherboard geared towards the desktop AND that this was all PRE production units (heck from the sounds of it the mobo is still under NDA) I'd exepct the final revision of Yonah to perform better.. by how much? who knows...


Those wattage numbers must be the total, they're a little high..
post #6 of 60
Thread Starter 
Yeah, they're total system power consumption.
post #7 of 60
Since it requires a new chipset I'll probably be waiting for Merom before I jump on the dual-core laptop bandwagon. I don't see why Intel went with a new socket for this chip.
post #8 of 60
So if you just go by the difference between idle and load, you get 16W. Unfortunately, we don't know if SpeedStep is enabled, the leakage power of Yonah, the application used to generate the full load, or the efficiency of the PSU, but it should be safe to assume the 2GHz DC Yonah is nowhere near 50W. Probably 20-25W, which would fit nicely with the reports of 80-90W full system load dual, 2GHz DC Sossamans.
post #9 of 60
Well, my laptop with 2GHz Dothan is running off 65W power adapter under full load, i.e. under 65W total system power consumption. 108W sounds like way too high. Even if you add another Dothan to mine, it still will be lower than 108W, lol
post #10 of 60
Quote:
Originally Posted by petri
Since it requires a new chipset I'll probably be waiting for Merom before I jump on the dual-core laptop bandwagon. I don't see why Intel went with a new socket for this chip.
Because Intel always uses a new socket for thier new CPUs. You hardly see an Intel CPU that is fully backwards compatable with a previous socket. This is traditional Intel. I was hoping that Intel would take a page from AMD's book and make thier CPUs backwards compatable with older sockets, however Intel is also a fairly large chipset/motherboard maker, and if they can sell you a new CPU, then they're getting even more money out of the deal since you will also have to buy a new motherboard from them

Personally I'd go for an AMD laptop, but all they carry are ATI cards, and well, the software I use doesn't get along with ATI (crappy drivers :P) So I'm stuck with Pentium-M
post #11 of 60
It doesn't seem that much better than the previous P-M.
post #12 of 60
Quote:
Originally Posted by DarthAcer
Well, my laptop with 2GHz Dothan is running off 65W power adapter under full load, i.e. under 65W total system power consumption. 108W sounds like way too high. Even if you add another Dothan to mine, it still will be lower than 108W, lol
Does your laptop have a videocard like the 850XTPE which idles away upwards of 30W of power? Most reviews have Dothan based desktop systems using ~100W of power when equipped with a high-end graphics card as well, so Yonah has comparable power usage to the same frequency Dothan.
post #13 of 60
AMD X2 3800+ has Max TDP of 89W so the Yonah being about 50W is quite true...
post #14 of 60
Quote:
Originally Posted by accord1999
Does your laptop have a videocard like the 850XTPE which idles away upwards of 30W of power? Most reviews have Dothan based desktop systems using ~100W of power when equipped with a high-end graphics card as well, so Yonah has comparable power usage to the same frequency Dothan.
Exactly the point: the article has nothing to do with laptops and any mention of how good Yonah could be for a laptop is pure speculation and hence can be ignored. Until proper tests are done that is.
post #15 of 60
well, can't wait to see what it will do in an Apple ibook come January
post #16 of 60
Quote:
Originally Posted by kofkf
well, can't wait to see what it will do in an Apple ibook come January
Probably everything except play decent games.
post #17 of 60
merom will be backwards compatible with yonah which is a great thing. im kinda dissapointed in the gaming performance, but the n again, they only ran one test.

yonah would have been much more impressive if they hadnt increased the l3 latency. i hope the 4mb chache in merom doesnt equal even higher latencies.
post #18 of 60
Quote:
Originally Posted by YinYang
It doesn't seem that much better than the previous P-M.
Nothing is significantly better, it's always a step up. We didn't go from Win 3.1 to XP Pro either, every version was just different enough to be noticable.

This is also why I haven't been ranting or raving about it, and why I don't really regret buying that Sonoma.

M.
post #19 of 60
Quote:
Originally Posted by petri
Probably everything except play decent games.
oh, i was just asking for it!
post #20 of 60
So the unavailable 65nm Yonah chip compares slightly worse to AMD's bottom-of-the-line, extremely cheap dual core 95nm chip that has been available for months... And that's a good thing?

One thing I wasn't able to determine is if any of these benchmarks were run in smp. There's also no indication which benchmarks were multi-core/processor optimized.

I also hate the fact that Anand used 3dsmax for the render tests and failed to include maya. 3dsmax has always been heavily intel optimized.

The real question is how is this chip going to compare to a multicore turion...
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