HD 4650 in (I)FL90/91

Thought it would be more convienient to have a own thread for all the HD 4650 related problems as the HD 3650 thread is pretty busy. First off: I did not install a Mobility Radeon HD 4650 in my laptop YET. However, I think it woul be a great upgrade. I'm very happy with my HD 3650 but I wana get the most out of my current laptop since I'm not able to affort a new laptop yet. Thus I'm planing to buy a HD 4650 for my IFL90, which would mean an 78% increase compare to my HD 3650 and an at least 85% increase compared to the stock 8600M GT (even more since the stock 8600M GT is only DDR2). [Source]



Anyway, I wonder where I can buy a HD 4650... I tried this site but the support REALLY sucks... they wouldnt even believe that it is possible to exchange the graphics card in the (I)FL90... anyways, after some e-mail conversation I found out that the cards offered there are all versions with DDR2 memory. On ebay I can't find anything... What about this acer specific page? They offer DDR2 versions as well, but how about the "VGA Board M96.1Gb 900MHZ MXM " is it compatible to the (I)FL90? Altough I fear the 900MHZ version is MXM 3 since MXMII goes only up to 800MHz or am I mistaken?



I really would like to get my hands on a HD 4650 with DDR3 or GDDR3 to test if it runs in the (I)FL90... I'm currently running a HD 3650 256MB DDR3 with 605/705 MHz @ 1.1V in my laptop which only goes up to 81C under full load (e.g. 3+ hours of GTA IV thus real maximum system load) so there is still room for stronger hardware as the HD 4650 can also be undervolted from 1.2V to 1.1V with stock clocks which are enough for me since the +200 pipelines are already enough to greatly increase the performance.



Of course it would be great to get my hands on a HD 4670 and install that one in my FL90, however, that card is even more rare on the internet than the HD 4650 and the temperature would most likely pose a problem even with undervolting the GPU and CPU... especially as my laptops begins to throttle down extremely as soon as the temperature of either CPU or GPU hits 93+C...