Follow the announcement yesterday of the collaboration between Intel and AMD on a new mobile gaming chip details on these chips and benchmarks have already been leaked on the web. So to start off with some details these new products are going to carry the “Kaby Lake G” codename, where “G” stands for the increased graphics power of the chip. The known product names are the Intel Core i7-8705G and Intel Core i7-8809G. Board names for these are 694E:C0 and 694C:C0, respectively.
So what everyone has been wondering is what graphics are on this chip. Well the discrete GPUs on these chips are said to have 24 compute units with a total of 1536 stream processors. The clock rates for the GPU differ per model with the i7-8809G running at 1190 MHz and the i7-8705G running at 1000 MHz. Both solutions have 4GB of HBM2 memory, it is clocked at 800 MHz on the i7-8809G and 700 MHz on the i7-8705G. On the CPU side of things these are 4-core, 8-thread Kaby Lake parts running at 3.1 GHz and 4.1 GHz Turbo.
The first benchmarks we have are GFXBench. We see the i7-8709G having an almost 50% performance advantage over the Core i7-8705G. These is most likely to the lower HBM2 clocks, but also its likely there is some sort of power management features going on as well.
Next up is GeekBench, and it appears that the i7-8709G is scaling its clock to stay within a certain power budget. This is evident as the reported max clock speed of the GPU is 1000 MHz compared to the earlier reported 1190 MHz we saw on GFXBench. It has on OpenCL score of 76,607 points.
Now on to 3DMark 11, where the Performance preset is run. This test shows that the Core i7-8809G is about 30% better in graphics tests than the Core i7-8705G. One interesting thing is that the Core i7-8705G does beat out the i7-8809G in one CPU test, this would confirm the presence of a cut-down GPU. So the lower power draw from the GPU means that the CPU has more thermal and power headroom to achieve Turbo clocks for longer.
To wrap things up we have a real gaming benchmark, the Ashes of Singularity benchmark. Here is the Core i7-8705G scoring a 3900 and 4800 score on the Low (1080P) present. We assume the two different scores have to do with power and performance profiles. On its best run we have 62.9 average FPS.
For those wondering we’ve look at other benchmarks out there and this GPU performance is something comparable to a GTX 1050 Ti or Radeon R9 285.
