With all of the excitement surround a CPU launch from both AMD and then Intel some of the smaller products have been overlooked. These are parts like the A75 chipset and the Llano CPU. We have had one of these up on the test bench for a while now. Mostly to run the performance tests and see where this hardware falls in terms of real performance, but also to try it out and see just what it is like to use. After all this is a platform that AMD was putting a good deal of stock in for future sales and market share. We wanted to see what it would be like to actually use one. We have already taken a look at the design philosophy and features So without any further preamble we bring you the second half of our Gigabyte A75-UD4H motherboard review.
Section III - Performance Tests, Real-World Here we have two tests that are designed to put the performance of the motherboard and its subsystems to the test. Both require good CPU, Memory, HDD and even to a lesser extent audio and network performance. The two tests we chose were Lightwave 3D 9.6 and AutoGK 2.55. We will be adding at least one more real-world test to this battery in the near future, but for now these two cover quite a bit.Lightwave 3D 9.6 x64 -Lightwave is another industry standard application for 3D animation and rendering. It has a large tool base and the rendering engine is highly threaded (when using the right render model). This application is also capable of expanding to 4k resolutions as well as ray tracing for rending the light sources. For our testing we use frame 470 of the Pinball scene found in the LW 9 Content folder. This uses the newer perspective camera that is better suited to a multi-CPU/Core environment. This camera style also uses ray tracing and a much improved anti-aliasing method. Settings are shown below in the attached screen shot. Of course these are single frame renders and they are not a complete picture; for that you have to take into account the number of frames an average project would have. In a typical 30 second commercial you will have around 840 to 960 frames (at 28 – 32 FPS) this means that you have to multiply the time of a single frame by that number just to get a vague idea of how long that 30 seconds would take. This is because each frame will have a different render time based on complexity.As with the Cinebench scores, the Lightwave scores here only serve to show that you would not want to pick up the A6-3650 and A75 combination for rendering. The issue is the slow memory performance and caching. This is not a huge concern for the market that this APU/motherboard combination is for though. AutoGK 2.55 Transcoding -AutoGK is a transcoding software that is really multiple parts combined to make an easy to use whole. It combines, items like FDD Show, Xvid encoder, Virtual Dub and others for use in converting one media format to another (usually Xvid AVI). It will not transcode copy protected DVDs or Bluray discs yet (you still need a decrypter for that). But it does an excellent job on everything else. For our testing we use a 2 hour movie that has been placed onto a standard definition DVD for playback; we then transcode this DVD to a 100% quality AVI with the original audio intact. This puts a strain on the CPU, Memory, HDD and the attached DVD ROM drive.As you might have expected the A75-UD4H and A6-3650 is not that great at transcoding using AutoGK. However, we have recently discovered that while AutoGK is great at handling multiple CPU cores it is not so great at handling memory efficiently. We will be replacing this application once we are finished testing out a few on multiple platforms to make sure there are no issues (or unfair advantages). Still considering the limited memory bandwidth and caching on the A6-3650 this is not that bad. We were disappointed that our scores decreased when we dropped in the Radeon HD5870 though.
