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Memory confusion on GTX 285

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MagR   09-13-2009 at 12:39:22 PM

Hi

I'm confused about the memory on my graphics card and could use some advice. I have a Pallit 2GB Geforce GTX 285. The GPU-Z utility shows the memory as 2048MB which is what I would expect.

However I've also run dxdiag on Windows 7 and it shows the approx memory as 748MB which is way too low.

I've searched some forums and some posts suggest you have to divide this by 3 for GDDR3 memory to get the right figure. This would give 249MB effective memory on a 2GB card! If this post is correct it should be showing as 6144MB.

I also read somewhere else that dxdiag does not count memory in use but surely it doesn't take this much to run the desktop?

I'm confused and am worried that something is wrong with my graphics card.

Can anyone help?

Regards

Mag

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Bronze Graphics badge coozie7   09-13-2009 at 12:50:32 PM
- 0 +

GPU-Z is right.
Those posts about dividing the memory are talking ****.

------------------------------ Peace cannot be kept by force, it can only be achieved by understanding: Eienstien
 Reply to coozie7
baddad   09-13-2009 at 02:22:51 PM
- 0 +

Are you using 32 bit or 64 bit Windows?

Message quoted 1 times
------------------------------ ASUS Striker II Extreme , C2D Q9450 OC 3.4, 8 Gig Memory, EVGA 8800GTX Triple SLI, Thermaltake 1000W PSU, Thermaltake Armor + Case, Acer 24" LCD, Water Cooled, 12 Foot DVI Cable, Vista 64 Bit SP2
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MagR   09-13-2009 at 11:18:23 PM
- 0 +

baddad wrote :

Are you using 32 bit or 64 bit Windows?



Thanks for replying so quickly. I'm using the Windows 7 RC1 64 bit which is the Ultimate Edition. It shouldn't have the c3.5GB memory cap like some 32 bit systems.

Thanks again

Mag

Message quoted 1 times
Reply to MagR
neonmonkey   09-13-2009 at 11:35:46 PM
- 0 +

does a 32 bit OS actually limit a graphics cards memory?

Reply to neonmonkey
Bronze Graphics badge mousemonkey   09-14-2009 at 12:23:09 AM
- 0 +

MagR wrote :

Thanks for replying so quickly. I'm using the Windows 7 RC1 64 bit which is the Ultimate Edition. It shouldn't have the c3.5GB memory cap like some 32 bit systems.

Thanks again

Mag


When running the RC 64bit my 4GB only showed as 3.25GB and with the RTM it shows as 4GB.

------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
 Reply to mousemonkey
leo2kp   09-14-2009 at 05:52:43 PM
- 0 +

funny, I have Win 7 RC1 and show 6GB. sounds strange.

Message quoted 1 times
Reply to leo2kp
MagR   09-14-2009 at 06:06:49 PM
- 0 +

leo2kp wrote :

funny, I have Win 7 RC1 and show 6GB. sounds strange.



Thanks for replying. It's my VRAM that is showing wrongly not my RAM - that is showing as 6GB no poblem.

Regards

Mag

Reply to MagR
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