Trinity Model Line-Up
Speaking about the graphics core of the desktop Trinity processors, we should also touch upon the model line-up within the new family. The thing is that different Trinity processors in the A-series may have different modifications of the Devastator core inside. Their distinguishing features are pretty standard, though: trying to differentiate their products based on price, they disabled one or more SIMD-engines in the junior versions of the core. As a result, the above described functionality, including 384 execution units, will only exist in the top APU modifications.
The model line-up of the new desktop Trinity processors looks as follows: the fastest models with the fully-functional Devastator core bearing Radeon HD 7660D marketing name belong exclusively to the new flagship A10 series. All other modifications with graphics cores featuring fewer streaming processors and working at lower frequencies belong to the “simpler” A8, A6 and A4 series, where they replace Llano processors.
The complete model line-up of the new Trinity based processors is summed up in the following table:
Even the graphics core in A8 processors is theoretically more than 35% slower than the fully-functional Devastator core. Not to mention even slower A6 and A4. And it means that the best candidates for gaming systems will be primarily A10-5800K and A10-5700 models. They could fit into an entry-level gaming system without the discrete graphics card bets of all. The processors from the more junior series will hardly be an option for universal gaming PCs that is why they should be considered for multi-media centers and home entertainment systems, which aren’t supposed to run resource-demanding 3D games.
Therefore, today we are focusing on the top hybrid processor, A10-5800K, with the integrated Radeon HD 7660D graphics core. This processor has two Piledriver modules at its disposal that is why diagnostic utilities and operating system see it as a quad-core processor. However, we have to point out that there is an alternative interpretation, which describes this processor as a dual-core one with the ability to process up to four threads simultaneously. Although it contradicts AMD’s statements, it seems to describe the market positioning of the new A10-5800K most precisely. In terms of price, this processor falls into the same range as the Core i3 from Intel, which are also dual-core CPUs, but with Hyper-Threading support.
Taking into account that this processor supports Turbo Core 3.0, its clock frequency should vary between 3.8 and 4.2 GHz. However, during our test session we saw that under heavy operational load it spends most of the time in the middle of this range – at 4.0 GHz.
Radeon HD 7660D graphics core integrated into A10-5800K works at 800 MHz and this frequency drops to 300 MHz in idle mode. Although AMD promised that turbo mode would also work for the graphics core, the graphics core frequency never rises beyond the declared 800 MHz.