7800GS limited to 1600x1200 over DVI?

[pclausen]

I was getting ready to order up the following card from Mwave (egg doesn't seem to carry the 460MHz versions yet)

EVGA 256-A8-N508-AX GEFORCE 7800 GS CO SUPERCLOCK

Anyway, according to Mwave, the rez spec for this card is:

Resolution & Refresh:
240 Hz Max Refresh Rate
2048 x 1536 x 32bit x 85 Hz Max Analog
1600 x 1200 Max Digital

I have a Dell 2405 which is 1920x1200, so does that mean I can't drive my monitor over DVI with this card at native rez?

 

[>HyperlogiK<]

I konw DVI is a badly bandwidth limited interface, does the card and you monitor have 2 DVI inputs/outputs? if so it might be able to drive higher.

 

[pclausen]

The Dell 2405FPW only has a single DVI input, so you would think that it would be able to handle the bandwidth of 1920x1200 over a single DVI link.

I know the 30" Dell and Apple monitors require the use of dual-link DVI since they are 2560x1600, but I thought 1920x1200 could squeeze through a single DVI link.

 

[pclausen]

I spoke to EVGA, and they confirmed that they do not offer any AGP cards that support anything higher than 1600x1200 over DVI.

Does anyone offer graphics cards for AGP that supports 1920x1200 over DVI?

 

[pclausen]

Now I'm really confused. I came across the PNY 7800GS Verto, and according to their web site, it does 1920x1200 @ 60Hz over single-link DVI.

Aren't all the 7800GS vendor cards the same except for the heat sink setup and how much overclocking they have?

If so, how can the eVGA only support 1600x1200 and the PNY 1920x1200?

 

[>HyperlogiK<]

Wikipedia lists these display modes for single DVI, and the associated max resolutions

HDTV (1920 × 1080) @ 60 Hz with 5% LCD blanking (131 MHz)
UXGA (1600 × 1200) @ 60 Hz with GTF blanking (161 MHz)
WUXGA (1920 x 1200) @ 60 Hz (154 MHz)
SXGA (1280 × 1024) @ 85 Hz with GTF blanking (159 MHz)

 

[pclausen]

Thanks hyper. So it looks like single will support 1920x1200. That being the case, I wonder why the eVGA spec states a 1600x1200 limit?

Wikipedia states that single supports 2.6 megapixels @ 60Hz. 1920x1200 is 2.3 megapixels, so everything should be fine you would think.