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I think they took out your 1GB memory chip probably and installed a 512 ram module and stuck in an old AMD athlon cpu too.😀
Anyway, you need to stop worrying about those geekbench score results and such. You will get a different number each time you try and in the end they dont mean much.
Enjoy your phone, if you have a serious hardware malfunction then ask to have it replaced. Dont get obsessed over nothing.

What's a serious hardware malfunction ?
 
Something not working right like broken or not functioning home button, power button, no wifi, no bluetooth, sound etc....
Not some companies test results that are meaningless.
 
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