Sapphire 9250 RAMDAC speed

  • Thread starter Thread starter Daniel
  • Start date Start date
Augustus said:
400Mhz RAMDAC

http://www.northamber.plc.uk/catalogue/view_product.asp?sku=SD0GH023A&sid=inactive

The link is for an identical ATI 128Mb 9250
Click to expand...

Thanks for the info.

I knew that other 9250s had 400MHz RAMDACs (Gigabyte for instance), just
wanted to confirm that the Sapphire one did as well. In the past I've
seen manufacturers divert from the defacto standard or reference design
- I've had two R9600Pros with 400MHz cores, but the reference design was
(initially) for a 600MHz core.

I got an email from Sapphire tech support confirming that the RAMDACs
(I'm assuming both) are indeed 400MHz.

Apparently, the 400MHz RAMDAC speed is compliant with the VESA VSIS
proposal on VGA signal quality.
 
Daniel said:
Augustus wrote:

... In the past I've
seen manufacturers divert from the defacto standard or reference design
- I've had two R9600Pros with 400MHz cores, but the reference design was
(initially) for a 600MHz core.
Click to expand...

Correction, I meant to refer to memory speed not GPU core speed.
 
From what I read, the RAMDAC nowadays is integrated into the GPU core, so
boardmakers cannot alter its frequency.
 
Back
Top