GTX 460 seems to have low Memory Clock?

[InsanityShade]

Hi, this is my first post here as you can see.
I've just put my new computer together, and have been running it for a few days so I started thinking about overclocking.
The system:
Core i5-760
Asus P7P55D-E LX
2x2Gb Kingston HyperX 1600MHz
PNY GTX460 768MB
1TB Seagate Barracuda

and here is a screenshot from MSI Afterburner

I have had the card for a couple of months now, and in my old system (Q6600) I am sure I had (overclocked with MSI) figures of 800 core clock, 1600 shader and 1800 memory, from 675 clock 1350 shader, 1800 memory (didn't OC the memory, tried once but it went unstable after a very small increase, so I left it).
As you can see from the screenshot, these figures do not match up at all!
Help?

 

[stulid]

download and run GPU-Z whats that tell you?

 

[InsanityShade]

seems to show the correct values GPU-Z screen.
Any idea what's going on with Afterburner then?