AMD FX-8150 Processor Review - Can Bulldozer Unearth an AMD Victory?
FX Memory Frequency Scaling and Testing Configurations
Finally, with AMD advertising the FX series of processors as having support for DDR3 memory speeds as high as 1866 MHz, I decided to see how much of an advantage you would get in terms of raw memory performance by simply turning that up. I used some Corsair DDR3-1866 Vengeance DIMMs for the testing.
In my quick Sandra testing I saw a 13% boost in memory bandwidth by simply bumping the settings from DDR3-1333 to DDR3-1600 and then another 6% going to DDR3-1866. I was also able to run the memory at DDR3-2133 settings and was able to cross the 20 GB/s mark!
Our CPU testing configuration remains mostly unchanged from our AMD Llano APU review this past June. For the new AMD FX processor testing our specs were as follows:
- AMD FX-8150 processor
- ASUS Crosshair V Formula 990FX motherboard
- Corsair H100 water cooler
- 2 x 2GB DDR-1866 Corsair Vengeance (running at DDR3-1333)
- Intel X25-M G2 160 GB SSD
- GeForce GTX 285 Graphics card
- PC Power and Cooling 1200 watt PSU
- Windows 7 SP1 64-bit
There are going to be a lot of numbers and graphs coming at at you on the following pages, but here are the keys to look for in my opinion:
- AMD FX-8150 versus Phenom II X6 - Many users will be wondering if they should get the new 8-core Bulldozer based part or save some cash and maybe upgrade to the 6-core Phenom II X6. What applications take advantage of the extra cores and frequency?
- AMD FX-8150 versus the Intel Core i7-2600k - Both of these CPUs support 8 threads, but which can handle the very heavily threaded workloads the best?
- AMD FX-8150 versus Intel Core i5-2500k - While the 2500k is the closest price competitor to the FX-8150, how does this four threaded CPU go up against eight thread competition?
- Power and Efficiency - Does the AMD FX draw a lot of power and warrant the inclusion of a new water cooler option?
On to the tests!