Here are my notes on the Advanced Dock. I just received two T60p machines (200793U and 2323DDU) with an Advanced Dock.
1. The Advanced Dock is much larger than the Dock II. It's about 1" taller, consumes about 2" more width on the desk, and is about as deep. When you put them side-by-side, the Advanced Dock looks huge.
2. It has SPDIF output
3. It has 5 USB ports, which is one more than the Dock II.
4. It has flash memory slots (CF, etc.)
5. The PCI-e bay has a separate fan to cool the add-on card.
6. It does NOT have any PCMCIA slots. The Dock II has two of them. This is not good for me, because that's how I get firewire support. With the T60p, your only firewire option is to use the PCMCIA slot in the main unit.
7. The main fan is much quieter than that on the Dock II. In fact, I may not even disconnect it like I did on the Dock II. The smaller, secondary fan for the PCIe card is also very quiet.
8. The key and release button are on the left. With the Dock II, they're on the right.
9. The slim bay is on the right. It's on the left with the Dock II.
10. The standard I/O is still on both docks (audio, VGA, DVI, serial, parallel, etc).
10. Overall construction is excellent and it feels very solid.
1. [This paragraph was re-written to indicate the dock's support of Dual-link DVI]
Advanced Dock DVI: The DVI supports dual-link DVI-D. Using both a T60p (v5200) and a T61p, I tested a Dell 3007WFP 30" monitor and drive it at it's native 2560x1600 resolution with no problems. It supports a many other physical resolutions (including 1920x1200). I haven't tested any other non-p Thinkpads.
2. The Advanced Dock's Slim bay appears to be bandwidth limited at 34 MB/sec. This is a big disappointment. I tested this by using HDTach to benchmark a 60GB/7200 PATA drive as follows:
T42p, as primary drive: 40MB/sec seq. read, 91 MB/sec burst
T42p, in slim bay: same
T42p, in Dock II: same
T60p, in slim bay: same
T60p, in Advanced Dock: 34 MB/sec seq read, 34 MB/sec burst
I don't have a second SATA 2.5" drive to test a SATA in the Advanced Dock's slim bay. But I'm guessing it would benchmark the same since the T60p's slim bay turned out good performance with a PATA drive.
3. The PCI-Express slot appears to be full-bandwidth, and benchmarks similar to that of a normal tower computer. When taxing a video card in the PCIe slot, the Advanced Dock's secondary fan in the PCIe bay revved up to handle the heat. It got pretty loud during the test. I tested with a program I wrote that performs SRC2SRC BitBlt calls in a tight loop to test internal memory bandwidth, and PLGBLT calls to test the speed of the interface.
I've been playing with video cards that fit the Advanced Dock's PCI-Express x16 slot. Since the PCI-e bay in the dock has a fan to cool the video card, you can use a heatsink video card safely. The PCI-e bay will take a full-height half-length single-slot card. By single slot, I mean that many PCIe video cards are two-slots thick with their huge fans.
The Matrox APVe dual-DVI (max digital res 1920x1200), fits perfectly. It uses a fan which I disconnected to make it quiet. The NVidia NVS280 dual-DVI (max digital res 1600x1200) also fits and uses a heatsink.
So far, the highest-performing heatsink-based card I've found that *should* fit the dock is this one: http://tinyurl.com/n3n5e
Edited to correct the paragraph about support for dual-link DVI.