I am using a ASUS N43JM laptop with Windows 7 SP1 x64 and Speccy can't detect the GPU:
The correct GPU specs should be:
Intel HD Graphics (integrated)
Nvidia Geforce GT 435M
This might be influenced by the Nvidia Optimus technology (controls whether the Integrated Intel or Nvidia Geforce GPU is used) but even after setting Speccy to use the Geforce in the Nvidia Control Panel, it's still not detected.