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We arrived at our overall performance score by giving each CPU a proportional score in each real world benchmark with each test having an equal weighting. The scale has been adjusted so that the A10-5800K is the reference point with a score of 100.
Overall, the A10-5800K and A8-5600K appears to be an incremental upgrade over the A8-3850 in terms of CPU performance, providing a Phenom II-like CPU experience while the older Llano platform is more in line with the Athlon II X4. Like the older quad core AMD chips, Trinity is really only competitive with Intel when you take into account multithreaded applications (or multitasking) which isn't heavily weighted in our tests. This allowed the lowly dual core Intel Core i3-2100 to finish ahead of them but we believe our benchmark suite is a fair representation of general use.
To determine performance per watt, we divided the overall performance score by the average power consumption calculated earlier and re-scaled with the A10-5800K as our reference. Neither APU comes close to Intel here though they're both considerable improvements over AMD's previous offerings.
Dividing the overall performance by the platform street cost (CPU plus an average priced motherboard) gives us the performance per dollar, again re-weighted with the A10-5800K at 100 points.
With the FM1 socket being superseded by FM2, the Llano platform is a terrific value at the moment if you don't mind the lack of upgradeability. The Phenom II X4's are actually a good deal cheaper than the A10-5800K currently, so they also offer some significant bang-for-your-buck. The A10-5800K lands near the bottom of the chart but the A8-5600K delivers reasonable value.
GPU-Adjusted Performance Analysis
Now we incorporate the graphics portion of the APUs into the equation, adjusting the non-APU processors for the power consumption and cost of a dedicated graphics card of similar capabilities. Performance-wise, the HD 7660D is faster than the HD 5570 but slower than the HD 6570 with GDDR5, so we'll say it's on par with a HD 6570 equipped with DDR3 (US$45). The 7560D and 6550D are closer to the HD 5550 which isn't widely sold any longer, so we'll call it US$40 and adjust the cost of the A8-5600K/3850 accordingly. For power, we'll be using the HD 5570's 9W idle draw as the reference.
The added power draw of a discrete graphics card knocks down Sandy Bridge chips by about 20 points a piece but they still have a substantial edge in performance per watt.
The extra cost of a US$45 video card causes of all the CPUs to fall in our value chart, allowing the APU to rise to the top. Even still, the A10-5800K and A8-5600K hold only a marginal advantage over the older Phenom II's in this respect.
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