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AMD A8 7650K APU Review | Page 3 | Black Hole Tec

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AMD A8 7650K APU Review - Page 3

Submitted by Robbie Pyckhout on Fri, 04/10/2015 - 13:39
Introduction and specifications
Test system and methods and overclocking
Synthetic CPU Benchmarks
Real-World Benchmarks
iGPU Performance
dGPU Performance
Power Consumption

Synthetic CPU benchmarks

First, we'll be discussing the computing performance of the stock and overclocked A8 7650K. First we have some synthetic benchmarks including our own benchmark and some others. Most of them are only related to the CPU. All overclocked results of the A8 7650K are based on a 4.5GHz overclock.




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• Multithreaded will test your CPU's efficiency of running more than one thread without major system lag. The higher you score on this one, the more threads your CPU can handle with a comfortable speed. High multithreaded scores generally means you can render things faster.

• 4 Threaded tests your CPU's performance in games, since most games currently run on 4 threads.

• Singlethreaded evaluates how fast the CPU can handle a single, dedicated thread of processing.

Since Multithreaded is arguably the most important and most future-proof test, it has a greater impact on the overall score results than the other individual tests.

The Black Hole Benchmark measures Multi-Threaded Performance and gives an accurate estimation on how real world perfomance may turn out to be like. The CPU in concern here is the core A8 7650K. As we can clearly make out that in terms of raw multithreaded workloads its performance levels are measured between the Richland flagship chips. With an overclock, we can easily raise the bar till beginning i5 performance.


The 4Threads benchmark also part of the Black Hole benchmark could possibly give a good idea of the gaming performance of the CPU, with a dedicated graphics card, ofcourse. In the 4threaded test, the results are quite similar compared to the multithreaded test. While the A8 chips lags behind the i3 chip in the multithreaded test, it's actually beating it when you compare the chips in a benchmark running specifically 4 threads, one on each work unit.

This is probably the test in which AMD harshly fails to compete with intel's offerings. Even when overclocked, the A8 isn't able to reach the performance levels of one of the i5 CPUs. We also need to admit that the black hole benchmark seems to give APUs a slight advantage than compared to other benchmarks available online. 



wPrime is a leading multithreaded benchmark for x86 processors that tests your processor performance by calculating square roots with a recursive call of Newton's method for estimating functions, with f(x)=x2-k, where k is the number we're sqrting, until Sgn(f(x)/f'(x)) does not equal that of the previous iteration, starting with an estimation of k/2. It then uses an iterative calling of the estimation method a set amount of times to increase the accuracy of the results. It then confirms that n(k)2=k to ensure the calculation was correct. It repeats this for all numbers from 1 to the requested maximum. 

In this test, the A8 7650K seems to be much faster than its Richland predecessors, even at a much lower clockspeed. It also bests the 1 second slower i3 4330. Overclocking the A8 7650K scaled pretty good in Wprime and gave us a decent improvement in performance.


About the Author

Keeping up with new inventions and technological improvements is kinda my thing. Writing about technology is just a result of my fascination with it. I hope to provide readers with as much news as possible, everyday.
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