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Sep 9, 2012

Lenovo IdeaPad S405 with AMD A4-4355M and A8-4555M APUs

Last week, we told you that the prices of the AMD Trinity desktop line had come out early, and we were especially giddy about the highest being the same as that of weak Core i3 CPUs from Intel, but there were a couple of chips not included in that list.

Then again, we weren't going to include the following two APUs even if we did know about them at the time, as said list was about desktop units, not mobile ones. The processors are called A4-4355M and A8-4555M, both of them part of the low-power lineup and set to appear in ultrathin notebooks and normal laptops. As it happens, one of the notebooks that has the two as potential central chips is the 14-inch Lenovo IdeaPad S405, which was part of AMD's IFA 2012 exhibition. Unfortunately, besides the name and the graphics component, the specs were left unexplored, so the world had to dig them up in the days following the show. It was CPU World that worked overtime to put everything together, having scoured the Hardware maintenance manual of the laptop for information. Details were also sought in the specs of some Samsung systems.

A4-4355M, the weaker of the chips, is a dual-core unit with 1 MB of cache memory, a base clock speed of 1.9 GHz, a Turbo Core performance of 2.4 GHz and a TDP (thermal design power) of 17W. The integrated graphics is called HD 7400G. The other unit, clocked at 1.6 GHz and 2.4 GHz Turbo, is stronger by virtue of having four cores instead of two. The graphics is better as well, HD 7600G, and so is the cache amount (4 MB), but the TDP is the same. Keep in mind that there is a third processor that Lenovo's IdeaPad S405 can rely on, the AMD A6-4455M, which, coincidentally, was the part featured in the laptop we have pictured up on the left.

Lenovo IdeaPad S405
Image credits to Lenovo


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