8th gen 6-core 45w or 8th gen 4-core 15w?
I'm deciding between the new XPS 13 9380 and the upcoming XPS 15 9580.
What's the performance difference between the cpu's when coupled with an egpu? If I want to play more CPU intensive titles. Will a 45w H series CPU have a significant different in terms of performance? I'm aiming to get a XPS 13 9380, however, if 45w H CPU offer meaningful performance improvements in CPU intensive titles, I would go for XPS 15 9580.
Any ideas? Does the better CPU give meaningful performance improvements?
Of course a beefy CPU will improve the performance in a CPU intensive title, this is true whether you are using an eGPU or not.
While I have no experience with the XPS 13, nor 15 systems, I know from experience that the i7 - 8750H chip CAN get ridiculously hot when gaming... To my knowledge the issue is far worse with the i9 chip.
That is not to dissuade you from purchasing a system with such a chip, as most often the issue can be resolved by repasting and undervolting. However, if you are uncomfortable doing this, you MAY want to consider the "lesser" CPU.
With regards to using an eGPU the most important factor is the number of PCIe lanes allocated to thunderbolt. This is more important for the performance of the eGPU as 2 lanes is far more likely to cause bottlenecking issues than 4 lanes.
Only you can answer the question.
I have the XPS 15 9550, I can say for what I use it for only once in a while did I need the 45 watts TDP, the rest of time I can use a dual core. Let's make it 10% of the time or less do I need the full power. In the meantime the difference between the 9580 unless it's changed significantly it will be around 4.4 lbs (2 kgs) while the 9380 is only less than 2.7 lbs (1.2 kgs). It doesn't look a lot but it means I need a significantly smaller laptop backpack and my back totally feels it 100% of the time.
You probably already know my answer from the above post, I'm waiting to see if XPS 13 will get Ice lake later this year, same casing (9380) that's fine, that's what I'm waiting for.