Hi, I just bought an Acer(packard bell) laptop that has a N3060 SoC. According to Intel, Wiki and Notebookcheck sites, it must have 8. Generation HD graphics 400(not 4000) of Braswell architecture with 12 compute units @ 320-600 MHz.
It is working under windows-10 64 bit home edition(single language) build 10240, 4GB single-channel RAM.
I'm also developing opencl programs on another machine and wanted to migrate them to this machine.
Before that, I tested against if opencl is supported or not.
Observation:
- compubench benchmark and any other opencl program sees it as a 8 compute units @200MHz constant frequency.
- compubench also gives only half of benchmark points of N3050-igpu for this N3060-igpu. (igpu vs igpu, not others)
- gpu-z shows it is stuck at 320MHz even under heavy graphics load.
- gpu-z render test starts heavily stuttered and freezes after 10 seconds
- OpenCL SDK for Intel says "opencl driver out of date" on installing phase.
- No OpenCL load increases cpu temperature(according to core temp software) but it should increase since half of chip is a gpu isn't it? Especially the t-rex part of compubench should increase temperature but not happening.
- It writes Intel HD Graphics everywhere in computer, drivers, but not Intel HD Graphics 400.
- It seems I'm first person to do a benchmark on compubench with an N3060 CPU(its iGPU actually).
- AIDA64 GPGPU gives errors.
What I tried to solve:
- unsinstalling current drivers(add/remove programs-->uninstall, device manager--> uninstall) before each new install
- installing latest drivers: n-series 15.40 which installs 10.18 for igpu and xx.xx for audio.
- running Intel driver updater software(which scans and offers same driver above, 15.40 which installs same 10.18 for igpu). 64 bit version of course.
- changed power saving to "performance mode" from both Intel HD Graphics settings and windows power savings settings
- Checked an AMD gpu on compubench and it shows different frequencies as a frequency range instead of single idle frequency so I'm sure it isn't an opencl-side issue. It should be Acer-side ır Intel-side issue but I'm not sure. Also gpu-z shows that amd card having a boost to a higher frequency.
I suspect:
- Acer(packard bell)'s support page is not active, maybe they temporarily deactivated 4 compute units and disabled dynamic frequency. But why didn't write "gimped igpu version" on computer board? I bought this computer because I need 12 compute units @320-600 MHz performance level but there is no info about that in laptop specs datasheet.
- Latest Intel Driver(15.40---->installs 10.18 for this n-series igpu (should be Intel HD Graphics 400, not 4000 to alleviate ofuscation) ) has bugs so need to wait next driver update.
- I just bought this laptop so It will update to w10 anniversary and more versions, probably will include a fix for this?
- It is single-channel RAM, so GPU is auto tuned to stay at base/idle instead of upping to boost and with only 8 compute units?
Thank you for your time.