Thinkpad X1 Carbon Gen 9: 16:10, 4k screen, 32GB RAM

Re:Thinkpad X1 Carbon Gen 9: 16:10, 4k screen, 32GB RAM by eqvinox on Tuesday January 12, 2021 @03:28PM (#25753076)

Has the GPU performance increased enough on recent Intel iGPU updates? I have an i7-8550U (UHD 620 GPU) with an external 4k screen (internal FullHD) and it's ... painful to use. Super sluggish and stuttery :(

[ Parent | on HN ]

Re:Thinkpad X1 Carbon Gen 9: 16:10, 4k screen, 32GB RAM by skrtskrt on Tuesday January 12, 2021 @04:04PM (#25753625)

My understanding from reading up on the 11th gen Intel CPUs is that the integrated graphics is supposed to be improved for first time in several generations. I have the same problem as you running a 4k screen from a Macbook with a 10th gen CPU.

[ Parent | on HN ]

Re:Thinkpad X1 Carbon Gen 9: 16:10, 4k screen, 32GB RAM by fomine3 on Tuesday January 12, 2021 @08:29PM (#25756783)

iGPU performance is primary constrainedby RAM bandwidth. I believe your laptop has DDR4-2666 or LPDDR3-2133 (it's bad) max. This X1 Carbon has LPDDR4X so at least 3200 or 4266 best, it makes significant improvement. Intel also improved Xe GPU core. Is it enough for 4K on your use case is different story.

Edit: AT argues that X1C uses LPDDR4X-4267, looks great.

https://www.anandtech.com/show/16392/ces-2021-lenovo-thinkpa...

[ Parent | on HN ]