The Clarkdale Review: Intel's Core i5 661, i3 540 & i3 530
by Anand Lal Shimpi on January 4, 2010 12:00 AM EST- Posted in
- CPUs
Power Consumption: Great but not as Good as Lynnfield
The biggest efficiency advantage Lynnfield held over Bloomfield was its extremely low idle power consumption. Clarkdale seems to ruin that thanks to its 45nm IMC/GPU on package. Idle power isn't bad, but noticeably worse than Lynnfield. Update: Many have pointed out that this may be a characteristic of our ASUS H57 motherboard, and that idle power is much more reasonable on Intel's H55 board. We're currently in Las Vegas for CES but upon our return we'll look into this further.
Load power is just dreamy though. This is ultimately what makes Clarkdale competitive. The i3s have the performance to compete with AMD's low-end triple and quad-core CPUs, but if they're anything like the i5 661 they have much better power characteristics than the competition.
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yuhong - Monday, January 4, 2010 - link
"The Clarkdale lineup is honestly made up of CPUs that are too expensive. The Core i5 670, 661/660 and 650 are all priced above $170 and aren’t worth the money. The problem is Lynnfield’s turbo mode gives you high enough clock speeds with two threads that there’s no need to consider a dual-core processor. You can buy a Core i5 750, have more cores than any of these Clarkdales and run at close enough to the same frequencies for $196."But then you have to pay extra for a discrete graphic card and not every application need the extra graphic power!
Paulman - Monday, January 4, 2010 - link
Wow, I was going to write about how you wouldn't have to buy a discrete graphics card if you went with a Core i5 750 because you could just choose a motherboard with an integrated graphics chip. But then I checked online and it seems that there aren't any P55-based boards with integrated graphics - wow! Wouldn't have believed it myself.However, Anand's point still stands when comparing the Clarkdale i5's to the Phenom II X4, for which you can get many boards with integrated graphics.
Inkie - Sunday, January 10, 2010 - link
"when comparing the Clarkdale i5's to the Phenom II X4, for which you can get many boards with integrated graphics"...but Clarkdale already has integrated graphics.
ssj4Gogeta - Friday, January 8, 2010 - link
It's because P55 is a southbridge, not a northbridge.Taft12 - Monday, January 4, 2010 - link
But then you have to pay extra for a discrete graphic card and not every application need the extra graphic power!Only if you don't already have any PCI-E x16 card. Is that true for a single reader of this site? And truly ANY PCI-E card will perform better than Intel's on-chip solution, even one 3 generations old.
ereavis - Monday, January 4, 2010 - link
so the price goes up another $30-$40. As to your question of truth, yes I spend 40 hours a week on an intel IGP dual core as it is, so do the other 1000 people in this building doing engineering work that's processor demanding but graphics independent.nubie - Monday, January 4, 2010 - link
There are rafts of HP 8400 OEM pci-e cards on ebay right now for $15 (total, no shipping or tax), that should even accelerate your Flash 10.1 and video just fine.If you even need it that is, and it is clear that for many there is absolutely no use for more than the integrated graphics.
oc3an - Monday, January 4, 2010 - link
Hi Anand. Looks to me like something weird is up with your Everest benchmarks. Shouldn't the 24X multiplier have the faster scores?-Patrick
Rajinder Gill - Monday, January 4, 2010 - link
Hi Patrick,Fixed it, the images were reversed.
Thanks!
Raja
maxfisher05 - Monday, January 4, 2010 - link
Good Article Anand. I'm going to be building my first HTPC soon, but I want to be able to do some light gaming on it, and it doesn't look like the integrated graphics have come far enough yet. If the 661 was priced lower I would consider it, but for nearly the price of a 750 you are right in saying it makes no sense. 750 + 5750 discrete graphics for me please :)Will someone be posting an updated system buyers' guide soon?