1) The T400 has the 3640. That is the one listed on the Lenovo website
2) There's no Display Port
3) T500 has no LED screen option. Again, you would know this if you check out the Lenovo website
4) v5700 is better than 3640. I don't have an exact idea by how much because nobody has gotten either laptop yet to do benchmark of the video card on each. W is the workstation series, while T is the mobile series, so by simple deduction, you'll know that the V5700 is better than 3640.
5) No, you should not upgrade if you got T61p. You will handle current games just fine with the T61p. It's just a waste to upgrade right now. Wait for Nehalem CPU's, and compatible chipset to come out then upgrade. That would be a more significant upgrade.
However, if you think switchable graphics is important because you need more unplugged time, then go for it. Just remember that the W series doesn't have switchable graphics.
About your other options: The Z-series is good. I would consider that, since it has a very very high resolution screen (1600x900). It also very lightweight and has a small footprint (13.3")
1.) Website does not appear to be correct. TABook indicates otherwise - 3470. Also note this review posted today:
which clearly states 3470. I have seen some posts indicating website is wrong, but I am still seeing orders going out where they state 3640. I am simply wondering if anyone has received one and can validate what they ordered is what they received. A 3470 is a much lower scoring card than a 3640 (if it is real) and can be a real deal breaker for me.
2.) Thanks for clarifying. Review posted today also seems to back this.
3.) Again website is giving mixed results. See this link where it does
indicate LED as an option on the T500:
http://shop.lenovo.com/SEUILibrary/cont ... eteURLPage
4.) Understood the the V5700 is better than the 3640 (that is a gimmie), however, I was wanting to know about the 3650 instead. Based on published data across the web, the V5700 is nothing more than a Radeon 3650 which is in the T500. Now, given logical deduction if V5700 = 3650, then what is my motivation for getting a W500 over a T500. Is it the extra 256MB VRAM? We all know ATI and Nvidia both use similar chips in business/enterprise class chips and in desktop/gaming level chips (ie Nvidia FX570M is nothing more than an M8600GT) and that is what appears to be the case here. They modify the video bios and driver code to distinguish.
5.) I am leaning towards this. If I keep the T61p, then I will simply upgrade to the T9300 2.5GHz CPU, WUXGA LCD panel, palmrest with wide touchpad from a T500/W500, and Blu-Ray player. This would get me through another year easily. Switchable graphics are nice, but I have lived without them up until now so waiting is not going to hurt.
3904 on 3dMark06 is decent, but not the phenominal jump I would have expected in such an upgrade from last generation. Users are getting anywhere from an average of 3862 upwards of 4300 with the FX570M which I currently have. It is getting hard to justify the cost of a new 500W just for graphics.
Thanks for your replies fellas. #5 seems to be my best option, UNLESS, item #1 turns out to be a 3640 as opposed to a 3740. Then I might have to jump on it.