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Performance in most tests.
Excellent price/performance ratio.
Efficient 45nm process.
Not as high performance increase as seen from the X2260 to the X3445.
Still not L3 cache.
By PC Mag on September 28, 2011
The AMD Athlon II X4 640 ($99.99 list) is a 3.0GHz, quad-core processor with support for 64-bit computing and virtualization, and includes both a heatsink and fan among other features. The chip also sports an integrated DDR memory controller, a 2MB...
By Rbmods.com on July 21, 2010
Priced around the same as the AMD Phenom II X4 905e and performing better in most tests I can only say that this processor is a juicy piece of hardware. It is true, that 640 will consume more power than the 905e, but if you're only after performance...
By Benchmark Reviews on July 02, 2010
The Athlon-II X4-640 performed very well against the lower end Athlon-II X3 and X2 processors that we tested it against. When overclocked to 3.8GHz it even got close and overcame to the performance of the i7 920, mostly in single threaded or low-end...
By ComputerPowerUser on June 11, 2010
All that said, I can’t say anything negative about the 640 or 610e in and of themselves. They performed well in benchmark testing and are delightfully inexpensive for quad-core...
By Bjorn3D on June 03, 2010
A new model of a CPU series is usually a pretty big deal, but six is phenomenal. Not only is AMD increasing the clock speed on these new models, but they are also keeping the top price points the same. So now you can get the new top-tier Athlon II...
By DigitalVersus on May 25, 2010
Just a notch above the Athlon II X4 630 in AMD's range, the Athlon II X4 640 has a slightly higher clock speed of 3.0 GHz instead of 2.8 GHz. Those extra 200 Hz allow it to overtake the Intel Core 2 Duo E8600, leaving it just behind the Core i3...
By PCPer on May 17, 2010
Groundbreaking? No. Unprecedented? Not even close. A nice increase in performance all the while pushing prices down? Definitely. Things can get a bit crowded on a m-ATX motherboard with full size video cards. AMD is milking the Athlon...
By HotHardware on May 11, 2010
The new Athlon II X4 640 performed relatively well, especially considering its affordable price point. Generally speaking, the Athlon II X4 640 processor was outpaced by Intel's latest dual-core, the Core i5-661, but keep in mind AMD's new...
By Pureoverclock on May 11, 2010
The results we see from this chip don't differ at all from what we've expected. At stock, it's essentially a slightly clocked up Athlon II X4 635, and when overclocked, it's also the same as an overclocked X4 635. No surprises here. So...
By Extreme Overclocking on May 11, 2010
As I stated in my opening paragraph, these CPUs for the most part are simply speed bumps in existing product lines along with using the latest C3 revision silicon. These new processors should replace existing models at the same price point, thus...
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