GTX 460 768 overclocking

Hi, I have the Asus "TOP" edition of this card (at the time it was by far the cheapest 460 I could find and was a bit of a bargain) and wondering if people have any experience of over-clocking it. More specifically if anyone has any luck with memory overclocking.

My theory is that although overclocking the core would give overall a better average fps, overclocking the memory exclusively would improve the minimum fps, likely caused by large textures etc combined with the restricted bandwidth in this card. I would think it to be useless to overclock the core to go from 50 to 60 FPS average if the minimum FPS was not helped that much and stuttering still occurred?

I get very annoyed when reviews only quote average FPS, to me minimum is at least as important.

I'm going to try some benchmarks out this evening to see if I'm correct. I imagine at lower resolution/lower texture detail core overclock is more beneficial, and at higher resolutions memory clock would be.

I've read some things about a weak memory controller on this card in an anandtech review so they only overclocked the core, anyone know about this?

Lastly (and this applies to cards generally), is it often possible to be able to overclock the memory higher if you leave the core alone?

Cheers, Oliver

In case anyone reads this looking for some answers...

Exclusive memory overclocking seemed to make performance worse! Was doing it all very quickly but it seems the way to go is ramp up the core. I'm even tempted to "underclock" the memory to the normal nvidia values instead of Asus' own which is likely doing no good at all.

The memory controller is a bit crap, so overclocking it may introduce more errors according to Anandtech.

However, you should be able to hit around 850 core at least at around stock voltage on nearly all GTX 460's. Upping the memory speed does improve performance i've found, but i can only squeeze an extra 100MHz out of mine without introducing errors.

As for your minimum/average gripe, sites can only reliably provided minimum frames if an in-game benchmark reports them, thats why some games do have minimum results and others do not AFAIK.

yeh, i did notice that when i was running the crysis benchmark the min fps was useless, because it's too early in the benchmark to mean anything. I suppose it's a tricky one!

I haven't tried to really push it but overclocking the core seems dead easy on this thing especially if I leave the memory alone. I think it could hit 900 quite easily on this TOP edition, 800s seem a breeze in it. If I find better results by underclocking the memory to 900mhz (stock nvidia) I'll report back.