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Core i5-580M vs. Core i7-640M

post #1 of 12
Thread Starter 
This isn't a benchmark thread, I need opinions.

I'd like to upgrade an i3-370M from a Acer TimelineX 3820TG. I'd like the best processor for gaming. I've been told the Core i5-540M is the best bang for the buck and matches the 5650 well. I've been told anything above the Core i5-540M will turn the 5650 into the bottleneck. I'd like to get as many FPS as possible but it's not worth the extra $$$ if a Core i5-580M or Core i7-640M only give an extra 2 or 3 frames. Also, I hear the i7's can get pretty hot compared to the i5's.

Anyone here have similar specs or know a lot about intel mobile processors wanna help out?

Thanks!
    
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post #2 of 12
You'd need to look into what your laptop would be able to cool. What's it rated to cool. That's the big thing and it's what's stopping me from buying an i7 at the moment. Your i3 has the same TPD of the mobile i5s on the market. Go for the 540M. If your machine can keep the i5 cool, you'll be fine.

I've got the Qosmio and it gets warm quick under load but that's due to the design of the cooler on my machine so yours may fair better.

And yes, the i7s have a TDP of 45 watts instead of the 35 watts that the i5s produce. The extra 10 watts leads to a much higher heat output and is generally a problem in most ASUS laptops, even with the monster fans they have.
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post #3 of 12
i5 smile.gif You don't need much more, especially with only 1366x768.
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post #4 of 12
Thread Starter 
Quote:
Originally Posted by Qosmio;11894371 
You'd need to look into what your laptop would be able to cool. What's it rated to cool. That's the big thing and it's what's stopping me from buying an i7 at the moment. Your i3 has the same TPD of the mobile i5s on the market. Go for the 540M. If your machine can keep the i5 cool, you'll be fine.

I've got the Qosmio and it gets warm quick under load but that's due to the design of the cooler on my machine so yours may fair better.

And yes, the i7s have a TDP of 45 watts instead of the 35 watts that the i5s produce. The extra 10 watts leads to a much higher heat output and is generally a problem in most ASUS laptops, even with the monster fans they have.

Hey! Thanks for the info! Much appreciated :-)

This is a screen shot of the CPU cooling. This isn't my pic but it's a good one. http://www.flickr.com/photos/kindan_online/4872545901/

I know 2 or 3 people on another forum with the same machine and running i7's but they aren't really using it for gaming so couldn't offer much help. They do rendering and what not. I was just thinking the "slightly" higher L3 and freq might help but you could very well be right that an i7 for gaming could overheat all too often.
Quote:
Originally Posted by jellis142;11894420 
i5 smile.gif You don't need much more, especially with only 1366x768.

Thanks! Like I said, I heard anything over a i5-540 and the 5650 would be the bottleneck but I didn't think about the resolution not really befitting from anything over a 540 either! Have a little bit more info on that?
Edited by Damarious25 - 1/4/11 at 9:46pm
    
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post #5 of 12
Thread Starter 
If a mod sees this could they please move it to the intel processor section because it might see better action there.

Thank you
    
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post #6 of 12
The bottleneck would be the GPU at that point, handling four threads is the sweet spot for most games. Just look at desktop's; i5's are great for gaming. i7's are better, but the benefit isn't worth the extra TDP. And is that your actual system in the signature? If so, I'm impressed biggrin.gif
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post #7 of 12
I would stick with the i5.

The i7 seems kinda dumb for a laptop.
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post #8 of 12
Thread Starter 
Quote:
Originally Posted by jellis142;11895714 
The bottleneck would be the GPU at that point, handling four threads is the sweet spot for most games. Just look at desktop's; i5's are great for gaming. i7's are better, but the benefit isn't worth the extra TDP. And is that your actual system in the signature? If so, I'm impressed biggrin.gif

Thanks. Any suggestions on which i5?

Here's a quick link to i5's on wiki. I'm leaning towards 460/540, 560 or the 580.

I'd like the 580 but again it might be overkill? The cheapest on ebay would probably be the 460 but the 460 and 540 have the same specs according to wiki. Why the different names for basically the same processor?

Actually I have a PII running and just haven't switched it over in the sig rig.
Quote:
Originally Posted by reflex99;11895737 
I would stick with the i5.

The i7 seems kinda dumb for a laptop.

Yeah, the more I learn about it from folks the i7 does seem dumb for the laptop.
    
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post #9 of 12
I5 5xx have a higher turbo frequency, and tend to get hotter.


I would get whichever is cheaper
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post #10 of 12
I am looking for the same thing - an upgrade for a 3820TG. I can run my i3 at 3Ghz but it gets very close to the low 88C(?) throttling point when under load. The i5/i7 CPUs can take over 100 before they throttle, plus they add turbo, higher overclocks, and a faster onchip GPU.

As for everyone else in this thread - the i7 620M does NOT have a 45W TDP - it's 35W just like the i5 and i3 CPUs. Now of course, higher frequencies will generate more heat than lower ones (and TDP doesn't mean a whole lot on power consumption), but from what I've seen, the mobile i5 CPUs seem to generally run cooler than the i3s, both at idle and load.

I would get whichever is cheaper. It seems that the 620m can be had second hand for 30% cheaper than the 580m so I would go with that.

http://ark.intel.com/Compare.aspx?ids=43560,49652
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