kitty666cats wrote:
I picked up the Monoprice VGA to HDMI, quite happy with it - but I’m pretty curious about this unit right here:
https://www.amazon.com/dp/B00WAIX5S4/ref=cm_sw_r_cp_api_i_WkbSFbPYC0CJHThe Silicon chip in it has quite an interesting datasheet, reminds me a lot of the OSSC! The Sil8784, to be precise
https://www.latticesemi.com/en/About/Newsroom/PressReleases/2014/201406AnalogtoHDMIA PDF of the datasheet can be found via some simple Googling, worth looking up (would link but my phone’s dying!)
I got one of these units. It seems to be the middle of the road between the cheap $5 dongles and the monoprice lkv-350, in terms of image quality. The below statements are the result of testing with GBS Control.
There is some noise in the image, only noticeable in bluish solid color backgrounds.
There is some ringing. Not really noticeable at viewing distances.
No noticeable lag.
This amazon unit does not pass through 240p (either in pass-through or downscale mode). The 720p and 1080p profiles both produce extremely washed out colors including black areas being overly gray. I did not try to correct for this. Seems to correlate with 16:9 output profiles?
Operating off the above assumption, the following is true for 4:3 GBS Control profiles:
-The colors are a bit washed out, although I'm able to get the most brightness on my TV out of this unit.
-For reference, I set brightness to '50' (out of 100) for standard HDMI sources like xbox 360, PS3
-I have to set brightness to '45' (out of 100) on my TV, for the $5 dongles. Anything more will start introducing gray in black areas, and the noise is more visible.
-I'm able to get to '47' with the monoprice unit
-With this amazon unit, I'm able to set it to '50'
There is some minor softening of the image - comparable to the $5 dongles, not present on the monoprice unit.
The manual that came with this amazon unit does note that it relies on VESA spec, and anything outside of VESA spec may produce undesirable results.
I'm seeing the monoprice units varying in price, but they are effectively comparable to (or better priced than) the amazon units. For the money, I would recommend the monoprice converter.
Stepping aside from the GBS Control testing, I paired the amazon unit up with a PC outputtting VGA. This PC has an HDMI output and VGA outputting simultaneously, and cloning the output @ 1024x768.
Image quality is much better in this use case. The softening is still there, but much less so...it's almost unnoticeable. The same is true for image brightness - much less so and almost unnoticeable. No noticeable noise or rining. However, there is some choppiness to the video, particularly when scrolling (vertically or horizontally).