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http://www.hdtvtest.co.uk/news/sony-...0080812126.htm
Sony KDL40X4500
A direct replacement for the outgoing X3500, the X4500 series will become the flagship range of Sony Bravia LCD TVs. The smallest one in the range, the Sony KDL40X4500, is actually inferiorly-specced compared to its larger siblings, but still offers the following advantages over the X3500:Sony KDL46X4500
- Hopefully better video processing (Bravia Engine 2 Pro vs Bravia Engine Pro)
- One extra HDMI port (four vs three)
- DLNA media streaming
Here is where things really get interesting. The Sony KDL46X4500 and KDL55X4500 will be driven by RGB LED backlight, which – just like the Samsung F96 we reviewed last year – can dim down the light leakage from darker portions of the picture. This theoretically can allow the Sony KDL46X4500 and KDL55X4500 to achieve 0 cd/m2 true blacks… it’s no wonder that the dynamic contrast ratio for these LCD HDTVs has been quoted at an astounding 1,000,000:1.
The Sony KDL46X4500 and KDL55X4500 will also feature Motionflow PRO 100Hz technology (likely improved MCFI algorithm) and “backlight blinking” which is probably similar to Sharp’s [Action Mode] and Philips’ [Clear LCD] scanning backlight systems meant to reduce motion blur.SaludosKDL46X4500 vs KDL40X4500 vs KDL40W4500
Here’s a table listing the key differences between these new models:
Feature............ X4500 (46″ & 52″)............. 40X4500........... W4500
Screen Size (inch)................ 46, 55..................40..................... 40, 46, 52
Bravia Engine ........................BE 2 PRO............ BE 2 PRO............ BE 2
RGB LED Backlight.................. Yes.................... No.....................No
Dynamic Contrast Ratio..........1,000,000:1......... 50,000:1.......... 50,000:1
Deep Colour.......................... Yes.................... Yes................... No
MotionFlow....................... PRO 100Hz.............. 100Hz............... 100Hz
HDMI Inputs.......................... 4......................... 4..................... 3
Assist Woofer.................... Yes (only 46″).......... Yes ..................No