problems with 3870x2 help

[altimd2001]

got new sapphire 3870x2 1g ddr3.i can see only one of the cores working and just 512 mb of v-ram.my device manager gets only one 3870x2.all 3d tests was desasters with skores lower then my old single core 3870 by gigiabyte.can anyone tell what the small jumpers in the back of the card doing.thanks in advance/excuse my english/
system;
mb-asus rampage formula x48
cpu-q6600 at 3gh
4x512 ddr2 800 kingston
psu 700 watt fortron epsilon

 

[boogah]

what drivers are you using.


fill out the machine specs inside UserCP

 

[AphexDreamer]

Yeah make sure your running the latest CCC and drivers.

Go here http://ati.amd.com/support/driver.HTML and click on your OS Edition and then the Series of your card for you Radeon HD 3870, download the package and install it.

 

[altimd2001]

i tried all from 8.3 till 8.9 dd and ccc in suits and separetly in both vista sp1 and xp sp3 variants with the two operatin systems.all the same thing i'm seeng in device menager only one 3870x2

 

[boogah]

maybe your card is defective. RMA it for another one from the place you bought it from.
Or try it on another machine to see if both cores shows up.. if not then it's the hardware for sure.

 

[AphexDreamer]

i tried all from 8.3 till 8.9 dd and ccc in suits and separetly in both vista sp1 and xp sp3 variants with the two operatin systems.all the same thing i'm seeng in device menager only one 3870x2

Give us the details of your system specs... How many watts does your PSU have and are you supplying two 6 pin or 8 pin molex connecters to the card?

 

[altimd2001]

i suply mi cards with 2x6 pin and 1x8pin.700 watt fortron epsilon

 

[altimd2001]

also tried only the 3870x2 on both pci-e slots remuving all unnecesery fans frro the case

 

[altimd2001]

and the shame run over me.3dmark06-9100 pts never seen lower then that

 

[AphexDreamer]

Have you modified any BIOS settings. What kind of motherboard do you have.

 

[altimd2001]

see the specs.asus rampage formula x48 with the latest bios 0410.the vga bios is original.couldnt find better till now

 

[Robert-The-Rambler]

Did you check the crossfire settings? Although it is a single graphics card it is still considered a crossfire setup with the drivers. Is the crosssfire box checked in the crossfireX section of Catalyst Control Panel? When I installed my Asus 3870X2 I might have had to turn on crossfire. I can't really remember but make sure crossfire is enabled.

 

[HELLSPAWNPR]

I have a MSI 3870x2 and having similar prob with the 2 GPUS, in Catalyst control panel theres no crossfire option. But it shows in the pullbar 2 3870x2

and in GPU-Z in crossfire it says enabled.

 

[boogah]

I have a MSI 3870x2 and having similar prob with the 2 GPUS, in Catalyst control panel theres no crossfire option. But it shows in the pullbar 2 3870x2

and in GPU-Z in crossfire it says enabled.

yah it doesn't show crossfirex in CCC because it's a single card with 2 cores. If you add another 38x0 series to the mix it will show the crossfirex option. GPU-Z is correctly showing 2 GPU is enabled.

 

[boogah]

also tried only the 3870x2 on both pci-e slots remuving all unnecesery fans frro the case

it may be a defective card. Get a replacement from the retailer.

 

[HELLSPAWNPR]

Thanks for the reply BOOGAH

 

[3870x2]

still, almost 10k with 1 core on the 3870x2 is pretty high, kinda wierd...

 

[boogah]

still, almost 10k with 1 core on the 3870x2 is pretty high, kinda wierd...

single 3870 with Q6600 at 3Ghz will get 11k +

3870x2 with Q6600 at 3ghz = 18k +

 

[BrooksyX]

Sounds like a driver problem to me. Uninstall old drivers and use a driver cleaner program then install latest ati catalyst.

As for only 512mb of ram. That is correct, each core gets 512 mb of ram so when they are crossfired they have equal amounts. Crossfire doesn't give you double the ram.

 

[Robert-The-Rambler]

I just checked my CCC setting on my PC with the 3870X2 from ASUS and you should see a crossfirex option on the bottom left of the CCC. It has to be enabled to use both GPUs. The 3870X2 is not the same as a monolithic GPU. It is in fact two separate video cards built on one PCB.