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AMD Athlon X4 845 CPU Review

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AMD Athlon X4 845 Testing:

To put the Athlon X4 845 to the test and see what its Excavator cores can really do, I will be running it and its comparison products through OCC's test suite of benchmarks, which include both synthetic benchmarks and real-world applications. The gaming tests will also consist of both synthetic benchmarks and actual gameplay, in which we can see if similarly-prepared setups offer any performance advantages. The system will receive a fully updated, fresh install of Windows 7 x64, in addition to the latest chipset drivers for each board and GeForce drivers for the NVIDIA GTX 770. To ensure as few variables as possible, all hardware will be tested at their stock speeds, timings, voltages, and latencies, unless otherwise stated. After stock speed testing, each processor will then be overclocked as much as possible, while still maintaining full stability.

 

Testing Setup: Intel (Socket 1151)

 

Testing Setup: Intel (Socket 1150)

 

Testing Setup: Intel Socket 2011 V-3

 

Testing Setup: Intel Socket 2011

 

Testing Setup: AMD Socket AM3+

 

Testing Setup: AMD Socket FM2+

 

Overclocking:

Overclocked settings:

  • Processor: AMD Athlon X4 845 4060MHz 106.85 MHz x 38

 

You probably noticed in the article title, but this is not a "K" series AMD CPU nor is it an FX Edition that would allow for easy overclocking via the multiplier. So, with that handicap in place, I ran with the old school method of increasing the base clock (FSB in old-timey terms) slowly up until the system was unstable, then backing down a bit. The only additional snag that tends to pop up with base clock overclocking is that the various components on the motherboard don't necessarily react well, and the limit of the board sometimes limits final clocks before the CPU itself ever has any issues.

This is the situation I found myself in, as the SATA bus would wonk out (that's a technical term for becoming nonfunctional) at a 108MHz base clock. However, without any changes to voltage or anything fancy, 105MHz indicated in the BIOS became 106.85MHz at runtime. This combination proved perfectly stable through whatever I could throw at it and the SATA issues seen at 108MHz never even hinted at life. Thankfully, the included stock cooler was more than adequate at these clocks with only a very slight increase in noise when running long duration CPU intensive tests! Chalk that up to another $20 you don't have to spend for a nice, quiet gaming rig!

The memory controller was up to the task of the higher frequencies, as well, without any tuning, running at 2265MHz with nary a complaint. It may not seem like much of an overclock compared to the K and FX models, but 260MHz over stock clocks (6.85% increase) for free is nothing to throw away!

 

 

Maximum Core Clock Speed:

Each CPU has been tested for stability at the listed overclocked speeds. These clock speeds will represent the level of performance shown by the overclocked scores in the testing.

 

 

Benchmarks:

  • Scientific & Data:
  1. Apophysis
  2. WinRAR
  3. Geekbench 3
  4. Bibble 5
  5. Office 2010
  6. POV-Ray 3.7
  7. ProShow Gold
  8. HandBrake .99
  9. Sandra 2014 SP2
  10. AIDA64
  11. Cinebench R15
  12. X.264 Benchmark
  13. PC Mark 8
  • Video:
  1. Metro: Last Light
  2. Batman: Arkham Origins
  3. 3DMark

Well, we have our lineup and maximum stable overclocks for each respective CPU; time to see what results we get.




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