As for the GPU, who said it's not allowed? If you feel that it is necessary to post it then why not? but then again as suggested, it's better if you placed this in the description portion to reduce title length.
pwede po ba? sa page 1 kasi, wala nakalagay na pwede GPU pero essential info sana yun.
- for laptops, brand, model, processor speed, RAM, HDD capacity will be enough