- Feb 5, 2010
- 8,793
- 5
- 76

I guess we need a new APU sub-forum, I took some time to decide where to post this. Anyway, this forum is a bit civilized so.. Discuss.
New information.
I am kinda dumb founded by that bolded part.The memory controller and northbridge functionality has received a massive makeover due to the increased data needs of an onboard graphics component. Again, the details of the changes will not be made public until much closer to the release of this product. This upgrade in the memory controller will likely not have a large effect on CPU performance, but it was certainly necessary to feed the GPU. It will still be a dual-channel, DDR-3 implementation, but with official support for higher DDR-3 speeds.
It looks to have around 480 stream units, which is one SIMD (80 stream units) larger than the current Redwood GPU that powers the HD 5500 and HD 5600 parts. The chip is going to have multiple clock domains, so the CPU core will run into the 3 GHz range while the GPU portions could see anywhere from 750 MHz to 1 GHz (or potentially slightly higher due to the process it is based upon).
For comparative purposes, the current integrated graphics portions of AMD’s class leading chipsets are based upon a single SIMD design (80 stream units) running between 500 MHz and 750 MHz. These parts are based on TSMC’s 55 nm process, so the new graphics portion of Llano is 1.5 nodes newer. This has allowed AMD to fit a whole bunch more stream units into an area that was typically reserved for the L3 cache on the Phenom II.
The die size overall on the Llano part should be between 170 mm squared and 210 mm squared, based on rough estimates comparing the die size of the 45 nm Phenom IIs with the full L3 cache. It should be an improvement for AMD in terms of manufacturing, but it certainly is not as efficient as their native 45 nm dual core design with 1 MB of L2 cache per core or the Athlon II X4s.
With the recent leaks of Sandy Bridge performance, we know that Llano will not be all that competitive on the CPU side. Certainly it will be an improvement over the current Phenom II parts (just barely), but it will get nowhere near Nehalem or Sandy Bridge performance. AMD is not terribly worried about that right now, as they feel the graphics performance will be more than enough to overtake what Sandy Bridge brings to integrated GPUs.
Source Article