Dual DVI & TV

[Ssin]

Originally posted by SalesSoup


not that i recall. the main difference is that the G400 had 300MHz and 135MHz RAMDACs (or 360MHz primary for the MAX), while G450/G550 have 360MHz and 230MHz RAMDACs.

Well, I guess you're right. After all how can you output without a ramdac?

[FormerEx-SalesSoup]

Originally posted by Ssin


Strange.. Matrox used to say the big difference between G400 and G450 was that there was a RamDAC in G450 and that was why secondary output was so much cleaner on G450.
Now maybe i was wrong.. then I apologies for my mistake.

not that i recall. the main difference is that the G400 had 300MHz and 135MHz RAMDACs (or 360MHz primary for the MAX), while G450/G550 have 360MHz and 230MHz RAMDACs.

[Ssin]

Originally posted by SalesSoup


G400 actually had a secondary RAMDAC at 135MHz. All Matrox DH boards use a second RAMDAC.

Strange.. Matrox used to say the big difference between G400 and G450 was that there was a RamDAC in G450 and that was why secondary output was so much cleaner on G450.
Now maybe i was wrong.. then I apologies for my mistake.

[FormerEx-SalesSoup]

Originally posted by Adam_F
Haig does not like that sort of question

neither do i, actually.

[Adam_F]

Haig does not like that sort of question

[FormerEx-SalesSoup]

Originally posted by Adam_F
So shouldnt the diagram be like this

good question...you should probably ask Haig as I'm a pre-sales guy rather than a techie.

[Adam_F]

So shouldnt the diagram be like this

[FormerEx-SalesSoup]

Originally posted by Adam_F
Isnt the TV/Video Encoder A RAMDAC of sorts?

if i'm not mistaken, it is merely a video encoding chip and needs a RAMDAC in order to output to the display. therefore, it's not really a RAMDAC in itself.

[Adam_F]

Isnt the TV/Video Encoder A RAMDAC of sorts?

[FormerEx-SalesSoup]

Originally posted by Ssin
why shouldn't it be possible? G400 family only had 1 ramDAC and could output to 1 screen and 1 tv at the same time.

G400 actually had a secondary RAMDAC at 135MHz. All Matrox DH boards use a second RAMDAC.

[GT98]

Hmm I'm starting to wonder if M put that on the board so they could make an el cheapo Parhelia Varient down the road with out Dual DVI or No DVI at all. Sorta like the RSN Chip thats missing at the top of the board also

[Adam_F]

That look like an analog vga monitor connector to me...?

Yep, It does to me too

And Here is a cable

[Evildead666]

That look like an analog vga monitor connector to me...?

[Adam_F]

Maybe this could help?



Surely TV encoders need only to be pointed to a correct portion of graphics memory to do their thing?
And are completely seperate from RamDacs and DVI encoders

[P5ycho]

you're right, my fault. just been explaining how a ramdac works on my 'home forum', gathering.tweakers.net (don't bother to check it out unless you're dutch ) and now i goof up on a simple question like this. sorry bout that.

Originally posted by Adam_F
Surely it does not need a RAMDAC for DVI output