PCIe 2.1 x16 @x2

Exactly what motherboard do you have? Could you have put it into a shorter 4x slot or something

Check my first post for the gpu-z screenshot. Sorry but I'm not sure what that point of the diagram you posted is, all I know is that if you look up my motherboard http://usa.asus.com/product.aspx?P_ID=cf8IZzbU4m6GHKnW and check the specs it'll tell you it has 2 PCIe 2.0 x16 slots.

Thanks for the replies.

Reseat the card, I had the same problem with my 6950 when I first installed it, the problem was caused by a little grease on the card edge connector, a light clean with isopropyl alcohol and a pen eraser resolved the issue.

My BIOS is up-to-date.

AIDA64 GPU INFO:

Graphics Processor Properties
Video Adapter ATI Radeon HD 5770 (Juniper)
BIOS Version 012.020.000.005.034524
BIOS Date 04/16/10 22:17
GPU Code Name Juniper XT
Part Number 113-XXXXXXX-XXX
PCI Device 1002-68B8 / 0000-0000 (Rev 00)
Transistors 1040 million
Process Technology 40 nm
Die Size 170 mm2
Bus Type PCI Express 2.0 x16 @ x2
Memory Size 1 GB
GPU Clock 157 MHz (original: 850 MHz)
RAMDAC Clock 400 MHz
Pixel Pipelines 16
Texture Mapping Units 40
Unified Shaders 800 (v5.0)
DirectX Hardware Support DirectX v11
Pixel Fillrate 2512 MPixel/s
Texel Fillrate 6280 MTexel/s

Memory Bus Properties
Bus Type GDDR5
Bus Width 128-bit
Real Clock 300 MHz (QDR) (original: 1200 MHz)
Effective Clock 1200 MHz
Bandwidth 18.8 GB/s

Utilization
GPU 0%

ATI PowerPlay (BIOS)
State #1 GPU: 850 MHz, Memory: 1200 MHz (Boot)
State #2 GPU: 850 MHz, Memory: 1200 MHz
State #3 GPU: 400 MHz, Memory: 900 MHz (UVD)
State #4 GPU: 850 MHz, Memory: 1200 MHz
State #5 GPU: 157 MHz, Memory: 300 MHz
-------------------------------------------------------------------------------------------
HWiNFO gives a lot of different information, I've been looking through it for the past 15 minutes and I'm not sure what to post that will help but here goes:


PCI Express Version: 2.0
Maximum Link Width: 16x
Current Link Width: 2x
Maximum Link Speed: 5.0 Gb/s
Current Link Speed: 5.0 Gb/s
Device/Port Type: Legacy PCI Express Endpoint
Slot Implemented: No
Active State Power Management (ASPM) Support: L0s and L1
Active State Power Management (ASPM) Status: Disabled

In your motherboard's AMI BIOS Setup Utility:

Advanced menu
> CPU Configuration
> Chipset <============= Choose this option
> Onboard Devices Configuration
> USB Configuration
> PCIPnP


Chipset menu
Advanced Chipset Settings
----------------------------------------------------------------
> NorthBridge Configuration
> RS780D Configuration <=== Choose this option


RS780D Configuration
NorthBridge2 Chipset Configuration
----------------------------------------------------------------
> Internal Graphics Configuration
> PCI Express Configuration <=== Choose this option
----------------------------------------------------------------
Primary Video Controller [GFX0-GPP-IGFX-PCI]

NB Power Management Features [Auto]


PCI Express Configuration
----------------------------------------------------------------
GFX Dual Slot Configuration [Auto] <=== Try changing this to [Enable]
GPP Slots Power Limit, W [25]


GFX Dual Slot Configuration [Auto]
[Auto] - Switches the PCIe lane of the PCIEX16_1 and PCIEX16_2 slots automatically.
[Enable] - Sets the PCIe lane of the PCIe lane of the PCIEX16_1 and PCIEX16_2 slots to x8/x8 or x16/x1 links.
[Disabled] - Disables this function

What does CPU-Z report on the Mainboard tab page in the Graphic Interface group box for Link Width and Max. Supported?

Does it also have the same reporting error?

Do you get a list of ports from Port #02 to Port #07?

PCI Express Configuration
----------------------------------------------------------------
GFX Dual Slot Configuration [Auto]
GPP Slots Power Limit, W [25]

> Port #02 Features <=== This one should correspond with slot PCIEX16_1
> Port #03 Features
> Port #04 Features
> Port #05 Features
> Port #06 Features
> Port #07 Features
> NB-SB Port Features


Port #02 Features
Gen2 High Speed Mode [Auto]
Link ASPM [Disabled]
Link Width [Auto] <===== Set this to x16
Slot Power Limit, W [75]
Compliance Mode [Disabled]

Gb/s is gigabits per second.

16-lane PCI Express 2.0 should have an aggregate throughput of up to 8GB/s. Note gigabytes per second (i.e. 64Gb/s).

Clear CMOS.

Run a driver sweeper to remove all remnants of the graphics card driver and reboot.

Download and install the latest graphics card driver.

If that fails try the graphics card in a different system to determine if there is a problem with the graphics card.

Try a different graphics card.

So I tried clearing the ATI drivers/Clearing CMOS/Re-installing the drivers and that didn't work. Unfortunately I don't have another card or computer to test things in that way, which I know would be helpful.

Correct me if I'm wrong but isn't the chipset installer nothing more than the driver for my onboard gfx?

So no one ever really commented on what I said earlier, when I said:

if you hover your mouse pointer over the bus interface field there should be a tooltip showing some extra info.

ok so x2 is allowed in the standards

Alright, well I have installed the Chipset software provided from ASUS and it brings up ATI Install Manager. That was why I said what I did about it installing the onboard gfx. Anyways, since running that, there's been no change and at the end of the setup it tells me that warnings had occurred. So I view the log and see no warnings or errors, very strange.

Are there any other chipset drivers options for me?

Were you using the same AMD Catalyst 9.9 driver that the Tom's Hardware review used?

You would expect later driver versions to improve the performance.

At x2 I would thinks you you see a less than 10% drop in performance than if you were running at x16.

It wouldn't be the graphics card that limits the PCIe lanes because it has no idea what you have plugged into the other PCIe slots.

It's the motherboard that decides the PCIe lane availability and usage.