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Tech Inferno Fan is right. if you experience a cardinal slowdown of your x220 with 16GB of RAM, please let Lenovo know on their forum and preferably also file a ticket to their technical support. The problem is typical for all X220/X230(t) series.

Shoot, that must be it I check on the web, no one scored more that 2500 in 3Dmark11 with 550Ti. Need to look for another card then...

Received the new PE4L soldered on both ends. GPU-Z reports 2.0 x16 @ x1 2.0, NVIDIA configurator also says the bus is Gen2. But 3Dmark sees it as x1. Something is wrong. I get same results as with PE4H on x1 speed. Results with PE4H: 15767 3DMark 06 P9063 3DMark Vantage Results with PE4L: 15392 3DMark 06 P9789 3DMark Vantage P2463 3DMark 11 Comparing to other people with similar configuration (x230) I get at least twice less scores for 3DmVantage and 3Dm11. Any suggestions?

Bplus was very nice to give me a refund and even cover the shipping! Extremely pleased with their service. Now waiting for PE4L-PM060A to arrive from HIT

Apparently Bplus has updated the PE4H page, no more saying Gen 2 support. Still no reply if they give me a refund.

Interesting and frustrating, upgraded to Win8 and scored 1000 less Result

Just my 2c to this amazing community. The refund difference will probably go to cover the shipping back to Bplus. And I had to sacrifice Setup 1.x free copy from HIT.

You're right. I set Gen 1 compatibility mode in BIOS and it worked just fine. 3DMARK06 Scores 15767 But no luck with Gen 2. Windows just crackles with errors all the time and no Aero. I can't even open context menu anywhere, and trying to switch to external screen just kills Windows. GPU-Z still reports it's x1 speed Should I write to Bplus and ask for a replacement?

I got a new x230 and I think I have the TOLUD problem. I have BIOS 2.02 and I though the problem was fixed by Lenovo long ago After numerous BSOD's and other booting problems I managed to take a screenshot of PCI bus memory allocation. I have only 4GB RAM installed. I use PE4H 2.4 + EC060A with PCIe Gen 2 support + GTX 550Ti. Any x230 owners?

Hi Tech Inferno Fan. I was watching your battle with Lenovo on TOLUD problem. While was resolved for x220, how is it with t420s? Do you know if the problem was fixed in BIOS 1.31?

Hi Maik and all others. I've been reading the forum for quite a while and now I decided to register I have exactly the same 2522KDG model of T410 with NVS3100M. I already bought GTX550Ti and almost finished building my own eGPU enclouse. I'm in the middle of placing an order of PE4H. I'm planning to do a x2 setup with either ExpressCard + mPCIe or mPCIe + mPCIe. I found on the web the schematics datasheets of T410, accoring to which it would be possible to sacrifise wifi/wlan connectivity altogether for x2 setup. But still I wasn't expecting that even x1 setup would be so low performace. Why need to disable iGPU, would it in theoty increase the performance?