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I5-520m vs Core 2 Duo

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June 12, 2010 10:07:41 PM

I'm in the market for a laptop, and pretty set on getting a Lenovo T series. However I'm debating if I should get the newest (T510/T410) model with an i5 CPU or save some money and get and older model with a Core 2 Duo CPU such as the T61, T400, or T500. Is there something super special about the i5/i7 processors?

For example if I got one of the newer models I would most likely get the i5-520m with the following specs

i5-520m
2.5GHZ, 3MB L3, 1066mhz FSB, 35w


For comparison I could also get an older model with one of the following Core 2 Duo CPUs

Core 2 Duo P9500
2.52 GHZ, 6MB L2, 1066 FSB, 25 watt

Core 2 Duo T9400
2.54 GHZ, 6 mb L2, 1066 FSB, 35 watt



They are all dual core running at ~2.5GHZ. Will the i5 still be much faster then the Core 2 Duo's?

More about : 520m core duo

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June 12, 2010 11:36:25 PM

^+1, mainly because it Turbo Boosts up to 2.93 GHz max IIRC. Otherwise clock for clock, the Core 2 Duo and Core i5 500M series aren't too far apart.
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June 13, 2010 12:16:57 AM

upgrading laptop's CPU are a pain if you are even lucky enough to have one that allows it

so get the best CPU you can afford if you plan to keep this laptop for more then two years
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June 13, 2010 4:16:10 AM

Thanks everyone for the responses.

The problem I have now is a T410 with the options I want is $1184 on Lenovo's site. However, I've found a T400 with about the same specifications (except for the processor of course) for $640. That's a $544 difference.

I can afford either. But to me it's more a question of value. Is the faster i5 worth the extra $544?
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