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Hi,

My 4850 is reported by ranger as a Radeon m98 (?Mobile GPU) with 256MB of graphic RAM. The card has 1GB of RAM.
Is this correct? If so why is it like this?

Thanks.

ddni wrote:Hi,

My 4850 is reported by ranger as a Radeon m98 (?Mobile GPU) with 256MB of graphic RAM. The card has 1GB of RAM.
Is this correct? If so why is it like this?

Thanks.

Not sure about the m98 thing, but all radeon HD cards report 256Mb ram to the system, this is so you don't lose too much of the 4G address space of PCI to graphics card memory.This only affects P96 BTW, Gallium 3D will be able to use the rest of the memory on your card (for textures)

Regards
Darren

Hi Daz, great explanation. Thanks.

ddni wrote:Hi Daz, great explanation. Thanks.

Dont worry about m98, this is the chip designation the card reports itself as.

Hi, another question re the 4850. The fan sounds like a jet taking off.
Is there any way monitor the GPU temp and automatically vary the fan speed?

I know I can install a manual fan controller, but not knowing the GPU temp worries me.

Can OS4 access the temp sensor on modern GFX cards?

PS. Does the Nemo motherboard or pasemi have temp chips?

ddni wrote:Hi, another question re the 4850. The fan sounds like a jet taking off.
Is there any way monitor the GPU temp and automatically vary the fan speed?

I know I can install a manual fan controller, but not knowing the GPU temp worries me.

Can OS4 access the temp sensor on modern GFX cards?

No, the OS has no means of monitoring the GPU temperature, or adjusting the fan speed. Most Radeon HD graphics cards automatically throttle the fan in response to temperature, but a few don't. It sounds like you're unlucky enough to have one that doesn't. Cards that throttle the fan based on temperature should make very little noise unless the GPU is running flat out and the card actually needs heavy cooling.

I used a Radeon X800 back when I was at university, and it also sounded like a jet taking off. Since then, I've made a habit of researching which cards are the quieter ones on the internet before buying.

ddni wrote:PS. Does the Nemo motherboard or pasemi have temp chips?

Yes, and you can currently read them from the CFE prompt (i.e., in the firmaware console screen).

Hans

P.S. The M98 is a Mobility Radeon HD 4850. Either your Radeon HD 4850 has a mobility chip on-board, or ATI's PCI ID database is incorrect (maybe that ID is used for both). Like the others said, it's nothing to worry about.