Best Engine for my Awful PC

[MidnightXS]

I have a pretty crappy PC, and until I upgrade my graphics card (I'll upgrade it to a Radeon HD 7750) I can't run anything fancy like BSU3 and LS5v2. So can someone recommend me to a good engine to use for now (Or somehow help me run BSU...)? So far, I like LS5's Unreleased and BS Dimensions. (There was another one where the default stage was Ocean's Bay, but I cant remember the name...) So without further ado, here are my specs:

System
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Manufacturer Dell Inc.
Model Inspiron 531s
Total amount of system memory 2.00 GB RAM
System type 32-bit operating system
Number of processor cores 1
64-bit capable Yes

Storage
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Total size of hard disk(s) 149 GB
Disk partition (C:) 75 GB Free (149 GB Total)
Media drive (D:) CD/DVD

Graphics
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Display adapter type NVIDIA GeForce 6100 nForce 430 (Microsoft Corporation - WDDM)
Total available graphics memory 798 MB
Dedicated graphics memory 64 MB
Dedicated system memory 0 MB
Shared system memory 734 MB
Display adapter driver version 8.15.11.9038
Primary monitor resolution 1360x768
DirectX version DirectX 9.0 or better

[thatguy]

Have You Tried Blitzsonic Freerunner 1.4?if thats slow the only best thing i could think of other than that is vanilla blitzsonic.