AGP/HSI cards limiting FSB overclocking?

[ragejg]

I'm hearing about this on the FX series PCIe cards with HSI, and seem to be experiencing the same thing with a 6600GT AGP...

Anyone know something about this? Links? Anything?

I'll have more details on my endeavours in the next couple days.

[ragejg]

ahem, BUMP!!

[superklye]

what is HSI?

[Subtestube]

High Speed Interconnect. It's the chip they bung on to convert from AGP to PCIe or from PCIe to AGP. So... erm.. the 6600AGP is a PCIe 6600 + HSI.

[Dr.Nick]

Interesting it would affect OCing on boards with agp locks. Maybe it's because nVidia OCs the AGP bridge on the card to 12x or so I hear.