I had ordered around 10 of those for a small build for a friend and had a VH6-II laying around. I dropped one in just to see and it went to 1050 with a decent coolmaster (~$8). I was pleasantly surprised so I tried the next several and they all ran at 1050 (Prime95 stable) and a couple ran over 1100 (not much though). So I kept several of them for friends and finished building the boxes that my friend was selling (BookPC's, what a nightmare those things were/are. Most died at just over the warranty).
On a side note, we tried a few 733's and they would only do 900 or so, which put the pci/agp bus too far out of spec for my tastes. I wasn't very pleased with those.