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CPU Performance Analysis
Note: Our benchmark suite is not heavily weighted toward multi-threaded programs so often dual core processors like the Core i3-2100 seem to score unusually high. Still, we believe our selection of tests closely represents a typical usage case for an average user.
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 A10-5700 is the reference point with
a score of 100.
Overall, the A10-5700 is slightly slower than the A8-5600K, bridging the gap
between the budget Phenom II and Athlon II's that are currently still available
on the open market.
To determine performance per watt, we divided the overall performance score
by the average power consumption calculated earlier and re-scaled with the A10-5700
as our reference.
Though it was beaten in almost all of our tests by the A8-5600K, the A10-5700
offset this with some minor energy savings making it a superior performer per
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 A10-5700 at 100 points.
Both the 5600K and 5800K eclipse the 5700 in performance per dollar. The 5600K achieves this almost purely on price alone, while the 5800K's US$5 premium compared to the 5700 is easily made worthwhile by about a 6% advantage in speed.
GPU-Adjusted Performance Analysis
Now we incorporate the graphics portion of the APUs into the equation, adjusting
for the power consumption and cost of a dedicated graphics card of similar capabilities
to the A10-5700. 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 HD 7660D equivalent graphics card knocks down Sandy
Bridge chips by about 20 points a piece but they still have a noticeable in
performance per watt.
The extra US$45 cost of a video card to the CPUs launches the A10-5700
from second last to the upper half of our value chart, eclipsing the Phenom
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