I bought this graphics card as a substitute for my onboard chipset, but wanted no additional fans and little more energy (I have a PC of ECO Green series with a very limited power supply).
The HD5450 has made my computer a lot more than I expected herrausdgeholt, Fallout 3, Two Worlds or Dreams of Mirror Online now run with high settings very well, F3 and 2W see even more comfortable with than on my 360 (I have no HD TV, just good old tube). The textures in Fallout 3 are sharp and not be compared to the Xbox version, I play with constant 30 FPS and have rarely stuttering.
Even Flash seems to run faster on the computer.
Pleasant is also the all (known to me) connectors for monitors on the graphics card are available (VGA DVI and HDMI)
For comparison och my computer configuration: AMD 64 3500+, 2.5 GB Ram DDR 2, 1024 x 768 TFT connected via VGA.
Conclusion: Anyone looking for a low profile card with passive cooling and energy savings, which I can absolutely recommend the HD5450, everything I expected of her has absolutely fulfilled.