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Looking to buy a new laptop - need to understand GHz

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August 1, 2013 2:00:27 AM

Hey,

I am planning to buy a new laptop and I really cant seem to figure out the processor speed.

The laptops with in my prince range have I3 or I5 with 1.8 or 2.0 GHz processing speed while my old laptop has core 2 duo @ 2.6 Ghz.

My question is why do some/ most of the new Intel I series processor have lower processing speed compared to the old older core 2 duo or dual core?

Am i missing some crucial information as in that a processor such as I3 @ 1.8 GHz is actually faster than my old core 2 duo @ 2.6 GHz?


a b D Laptop
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August 1, 2013 2:04:06 AM

The Core i# series do more work per clock cycle compared to Core 2 Duo's.

Comparing processors by MHz or GHz (clock speed) is like comparing cars by rpm.
- Doesn't really mean much at all.

Google 'IPC (Instructions Per Clockcycle)' and download SiSoft SANDRA to run some benchmarks.

There's also cache and other factors (integrated memory controller, etc.) to take into account.

You can get higher clock speed laptops with Core i# mobile processors btw.

See http://ark.intel.com for details.

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a b D Laptop
a b à CPUs
August 1, 2013 2:04:46 AM

its not just down to highest ghz wins

its also down to cpu architecture

if its in your budget get the i5
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a b D Laptop
a b à CPUs
August 1, 2013 2:12:35 AM

ZAT12 said:
Hey,

I am planning to buy a new laptop and I really cant seem to figure out the processor speed.

The laptops with in my prince range have I3 or I5 with 1.8 or 2.0 GHz processing speed while my old laptop has core 2 duo @ 2.6 Ghz.

My question is why do some/ most of the new Intel I series processor have lower processing speed compared to the old older core 2 duo or dual core?

Am i missing some crucial information as in that a processor such as I3 @ 1.8 GHz is actually faster than my old core 2 duo @ 2.6 GHz?




There are Mobile i3/i5/i7 upto 3Ghz ...

what you see is the ultra low voltage one to save battery life , those work at 17 watts only ...

there are categories here

17 watts , 35 watts , 45 watts , 55 watts CPU for mobile

you are just looking at the 17 watts ones .. and yes core 2 duo are very slow today ... and yes i3 1.8 is faster than core 2 duo 2.6

http://www.cpubenchmark.net/laptop.html
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August 1, 2013 3:35:27 AM

I always check this site http://www.notebookcheck.net/Mobile-Processors-Benchmar... and this for graphics http://www.notebookcheck.net/Mobile-Graphics-Cards-Benc....

not very accurate, but is good. It makes you an idea of how far is an i3/i5 form a core 2 duo. I recently recommended a friend a i3-3227U with HD4000... 4gb ddr3 1600 Mhz, and kind of blows off my old laptop which is a core 2 duo 2.2 ghz 3gb ddr3 ram, with dedicated Geforce GT320M 1gb ddr3. I score about P1260 in 3dmark vantage. that i3 scores http://www.3dmark.com/3dmv/4679480 P2833
http://www.3dmark.com/3dm11/6495370 P600
and it runs max payne 3.
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August 2, 2013 3:02:54 AM

Thanks for the info guys.

I came across this laptop
http://shopping.indiatimes.com/computers/notebook/lenov...

I'm not able to find much reviews about this laptop, Nor able to see it on the Lenovo Indian website( might not be in production anymore )
The price comes to about 580$ for this i5 model and I thought I would throw in another 2 Gb RAM.
Is this laptop good ? I do want it to play recent games too
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a b D Laptop
a b à CPUs
August 2, 2013 3:34:09 AM

ZAT12 said:
Thanks for the info guys.

I came across this laptop
http://shopping.indiatimes.com/computers/notebook/lenov...

I'm not able to find much reviews about this laptop, Nor able to see it on the Lenovo Indian website( might not be in production anymore )
The price comes to about 580$ for this i5 model and I thought I would throw in another 2 Gb RAM.
Is this laptop good ? I do want it to play recent games too


maybe This is an India only model or Asia only model .. this is not common international. get a haswell CPU is better , if you can ofc.

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a c 109 à CPUs
August 2, 2013 3:42:13 AM

if you want to game, that laptop won't run very well. it may have a good cpu but games are more dependent on the graphics card. and intel integrated graphics don't cut it.

look for a laptop with an AMD A-10 or build a desktop. The A-10 would be able to play newer games than the intel. you'd have to play them at low settings, but they would be playable.
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