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Do all the laptops have the GHz advertised in the processor?

I am currently looking into purchasing a laptop to retire my 2004 Lenovo s12. I love my little Lenovo but it received a virus a few months ago and I was forced to reinstall windows and all the drives to the best of mine and some of my techy friends. It simply does not perform as good as it used to and I think it is time to give it a rest. I have done a great deal of research on mostly models within the range of $200-$450 with more than a 12” screen. I only want Asus, HP (Compaq), Samsung, Sony, Toshiba and of course Lenovo brands. My Lenovo has an Intel Atom processor with 1.6ghz. I am looking for more than 2ghz and more than 2gb of ram (that is upgradable) the more the GHz the better. The problem is that I think I put in too much research and have come across some laptops that display (place Processor name here) and has so and so amount of GHz but some sites and reviews claim that the products processor has the performance of a lesser one than advertised (this is mostly with the Toshiba. I looked at what they had for sale and the AMD brands are often compared to Intel processors with much less GHz). I want to know if there is something else I should look for in a processor , if it is just propaganda to make Intel look better or if AMD processors are honestly not as good as Intel ones. The following are laptops that have caught my eye so far: SAMSUNG R Series R540-JA06 (From newegg.com) COMPAQ Presario CQ56-219WM Refurbished (also from newegg.com) Compaq – Presario CQ56-115DX (from bestbuy.com) Satellite C655D-S5120 Refurbished (from Toshiba.com) I am planning to make a purchase for one of these in the next week or so, any others you would like to point out is totally fine or websites as well. Also I have already checked Walmart, Radioshack, Circuitcity, all of the namebrand websites mentioned above and a number of other websites as well. Currently I am looking up each processor for reviews on third party sites. If you have any laptop that you know of that I might be interested in please do not be afraid to post it. Just as long as it is one of the brands listed, has 2 or more gb of ram and has a faster processor than my 2004 Lenovo Ideapad s12's Intel Atom processor.

Public Comments

1. the deal w/ amd is that they work better than their exact counterparts, so you buy a lower ghz processor in amd to get the same computing as the intel. that said, no, not all have the speed rating posted on them.
2. well the only real way for simply higher ghz (clock) to be better is the exact same processor but at different clock, now all processors are different in different ways amd ushally have higher clock and cheaper price, but are very innaffective per clock while intel have everything from a low clock to a high clock but are much more effective per clock then amd is intel is better then amd and have been for several years now, but that also depends on what processors your compering, so there is no real simple anwser to whats better, depends on what cpu and what clock at what price then ofc it depends on what cpu it is, from what series and how effective it is and so on. there are way to many things to simply just check more then try to find tests. higher clock is not always better, more cores arnt always better either
3. Yes, Satellite C655D-S5120 Laptop Specifications http://us.toshiba.com/computers/laptops/satellite/C650/C655D-S5120 The AMD Athlon ii P340 processor has a clock frequency of 2.2 GHz. The AMD P340 is a dual core low cost processor with decent performance level.