Crossfire 4850 help

I just installed two ati 4850's, I attatched the two crossfire connectors, attatched them both to the power supply, updated the drivers, but I dont know(think) that it's running in crossfire. I'm using a VGA to DVI adapter from one card to my tv (not monitor) and I think that might be the problem. 3dMark06 only mentions one gpu, and when I run dxdiag, it only mentions one gpu aswell, how can I tell for sure that I'm running these things in proper crossfire?

[img=http://img503.imageshack.us/img503/5909/3dmark06picsb7.th.jpg]

[img=http://img246.imageshack.us/img246/3811/dxdiagpiccz9.th.jpg]

I know there's 2 there, but on the ati website it says there should be 4 devices, if you dont have 4 then there's a problem

http://ati.amd.com/technology/crossfire/software_setup.html

so you checked the "enable crossfire" button and everything? also since its a new card it might only show 2 like SLI. the real way to find out is to boot up a game and measure your FPS.

sorry i dont have much expierence with crossfire. hopefully somebody else comes along

based on 3dmark06, my total was 8595 3d marks, sm2.0: 2413, hdr/sm3.0: 4491, cpu: 3360

I dont think that's what it should be with those gpu's

I think the problem is the cord, all of these crossfire setups have this dual dvi cord that I dont have

http://www.legitreviews.com/images/reviews/379/crossfire.gif

http://www.legitreviews.com/images/reviews/286/ati_crossfire_system.jpg

I think the problem is the cord, all of these crossfire setups have this dual dvi cord that I dont have

http://www.legitreviews.com/images/reviews/379/crossfire.gif

http://www.legitreviews.com/images/reviews/286/ati_crossfire_system.jpg

alpowerfull

Someone correct me if i'm wrong, I'm pretty sure that's because those cards don't use the internal crossfire bridge. All the new ati cards use it, like yours.

I think you're right

click on "internal interconnect"

http://ati.amd.com/technology/crossfire/howitworksdemo.html

gpuz says that one card's bus interface is pci-e x16 @ x4, while the other one is pci-e x16 @ 16

is that a problem?? if so what do I do

what motherboard do you have?

becasue if its P35 ( or maybe P45 ) you have one 1 connector 16x and another 4x

you dont have to have two 16x slots, but there will be a performance hit if your using 16x and 4x ( which you are by the way) look up crossfire comparisons between x38 and P35 performance in google. try using one card and see what you get.Goldmatter

True, but what is the point of doing Crossfire at all if you are going to take such a hit, no?

all I know is that my motherboard box says 2x pci-e x16, and it says crossfire readyalpowerfull

One slot has a x16 electrical connection, the other only has a x4 electrical connection (that's linked to the soutbridge not the northbridge, causing high latency as well).

It's sort of a gimmick that motherboard makers use to entice potential buyers.

Can you give the entire specs of your PC?

So what problems are you having exactly?

[QUOTE="alpowerfull"]all I know is that my motherboard box says 2x pci-e x16, and it says crossfire readyWesker776

One slot has a x16 electrical connection, the other only has a x4 electrical connection (that's linked to the soutbridge not the northbridge, causing high latency as well).

It's sort of a gimmick that motherboard makers use to entice potential buyers.

Can you give the entire specs of your PC?

So what problems are you having exactly?

Q6600 CPU 2.4ghz - oc'd to 2.8ghz

P5k Deluxe Mobo

2 x diamond radeon 4850 gpu in crossfire

4gb ddr2 ram, 3.25gb used in vista 32bit

750w quad sli ready Silencer psu

back fan, side fan, cpu fan, psu fan, hdd fan, 1 fan per gpu

the problem is that I"m not getting good fps in my games or a good score in 3dmark06 and I do not have any proof anywhere that I am using crossfire

ie. Crysis: everything on high, no AA, 1360x768 res, I get 10-20 fps on the intro inside the plane before they jump, when I should be getting way better fps there

I'm going to run 3dmark vantage and see what happens there

based on 3dmark06, my total was 8595 3d marks, sm2.0: 2413, hdr/sm3.0: 4491, cpu: 3360

I dont think that's what it should be with those gpu's

alpowerfull

No, something is wrong. Cause I scored 7100(ish) with an X2 5200+ and 2x 8600GT's. If thats all your getting I'm not impressed with the ATI's.

something is gone wrong

maybe you haven't turn crossfire to on

I got 12000 in 3dmark2006 with Q6600 3GHz 4GB RAM and single 4850

[QUOTE="Wesker776"]

[QUOTE="alpowerfull"]all I know is that my motherboard box says 2x pci-e x16, and it says crossfire readyalpowerfull

One slot has a x16 electrical connection, the other only has a x4 electrical connection (that's linked to the soutbridge not the northbridge, causing high latency as well).

It's sort of a gimmick that motherboard makers use to entice potential buyers.

Can you give the entire specs of your PC?

So what problems are you having exactly?

Q6600 CPU 2.4ghz - oc'd to 2.8ghz

P5k Deluxe Mobo

2 x diamond radeon 4850 gpu in crossfire

4gb ddr2 ram, 3.25gb used in vista 32bit

750w quad sli ready Silencer psu

back fan, side fan, cpu fan, psu fan, hdd fan, 1 fan per gpu

the problem is that I"m not getting good fps in my games or a good score in 3dmark06 and I do not have any proof anywhere that I am using crossfire

ie. Crysis: everything on high, no AA, 1360x768 res, I get 10-20 fps on the intro inside the plane before they jump, when I should be getting way better fps there

I'm going to run 3dmark vantage and see what happens there

How much RAM do you have?

Are you sure you installed the 8.6 Catalyst Suite from scratch?

Also, download GPU-Z (google it). It should tell you whether or not CrossFire is enabled. This seems like some sort of software proble, rather than a hardware problem (either your Windows install is borked, or you've got something that's disrupting the ATI drivers).

Ok so the problem turned out that my processor was holding the gpu's back or something, so I bought a cpu heatsink and I have to over clock it

this guy I know oc'd it for me from 2.4 to 3.0 3dmark went up 20 fps and it was like heaven was opened up

so I just need some tips in oc'ing, all I know is I do it in the bios

Download cpuz and check your cpu frequency.

Chances are that Intel SpeedStep (EIST) is enabled. Enter your Bios and disable it if it isn't yet. EIST decreases your cpu frequency for lower power consumption.

Download cpuz and check your cpu frequency.

Chances are that Intel SpeedStep (EIST) is enabled. Enter your Bios and disable it if it isn't yet. EIST decreases your cpu frequency for lower power consumption.

matrixian

I've oc'd in the bios to 2.8ghz, and I still get 10-20 fps in the Crysis intro, and I still cant run 3dmark vantage

[QUOTE="matrixian"]

Download cpuz and check your cpu frequency.

Chances are that Intel SpeedStep (EIST) is enabled. Enter your Bios and disable it if it isn't yet. EIST decreases your cpu frequency for lower power consumption.

alpowerfull

I've oc'd in the bios to 2.8ghz, and I still get 10-20 fps in the Crysis intro, and I still cant run 3dmark vantage

you need vista SP1 to run 3dmark vantage