Why is Windows reporting AMD64?

Beemer2 · 13 May 2010

My processor is a Intel Core 2 duo CPU E8400 and I'm running Windows 7 Pro 64-bit and XP mode. The motherboard uses Intel ICH10 Southbridge.

Device manager shows the correct processor.

However several times when using either Windows tools or other tools I see AMD64 mentioned as the processor type. This surely cannot be correct?

Dwarf · 13 May 2010

Can you provide some pictures showing this? What does CPUID say?

pebbly · 13 May 2010

remember win7 64bit is defined in the OS string as "AMD64" are you sure that isnt what you are seeing

Zidane24 · 13 May 2010

AMD64 is the 64-bit technology that runs 64-bit mode for modern OSs....

It is showing as AMD64 cause that is the modern 64-bit execution mode that everyone uses

It is called AMD64 cause AMD readily developed it....not cause you have an AMD processor

ssri · 13 May 2010

Beemer2 said:

My processor is a Intel Core 2 duo CPU E8400 and I'm running Windows 7 Pro 64-bit and XP mode. The motherboard uses Intel ICH10 Southbridge.

Device manager shows the correct processor.

However several times when using either Windows tools or other tools I see AMD64 mentioned as the processor type. This surely cannot be correct?

'It is called AMD64 because AMD was the first with a working 64-bit chip with those specifications that could also run older 32-bit code. The original 64-bit Intel chip I think was called IA64 with a different instruction set which could not run 32-bit PC code.' (link)