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It's been a little while since AMD's Llano chip has launched. When Neoseeker reviewed it, the test results proved that its integrated graphics processor was the fastest on the market. Yet not all of its capabilities had been tested. In fact, the Llano IGP has the ability to run asymmetrical CrossFire, which this time has been dubbed "Dual-Graphics Mode". This is something already seen in older chipsets from both AMD and NVIDIA, but back then IGPs such as the Geforce 8300 or the HD 3200 were so weak that the cards they could be paired with were in the very low-end of the market spectrum.
With Llano, this is completely different story; the most powerful card that can be used in conjunction with the new APUs is the Radeon HD 6670, which is not exactly low-end. ASUS has sent Neoseeker one of its models so the capability of Llano can be tested. That particular model is without a doubt made to perform; it comes equipped with 1GB of GDDR5 memory and it has a custom heatsink whereas cheaper HD 6670 offerings ship with only 512MB memory.
The mid-range card bundle is fairly straightforward, with the driver DVD, a DVI-I to VGA adapter and a quick setup guide.
| Specifications | |
| Graphics Engine | AMD Radeon HD 6670 |
| Video Memory | GDDR5 1GB |
| Engine Clock | 810 MHz |
| Memory Clock | 4 GHz (1 GHz GDDR5) |
| Memory Interface | 128-bit |
| Resolution | DVI Max Resolution : 2560x1600 |
| Interface |
D-Sub Output : Yes x 1 (via DVI to D-Sub adaptor x 1) DVI Output : Yes x 1 (DVI-D) HDMI Output : Yes x 1 Display Port : Yes x 1 (Regular DP) HDCP Support : Yes |
| Accessories | 1 x DVI to D-Sub adaptor |
| Software | ASUS Utilities & Driver |
| ASUS Features | Super Alloy Power |
| Dimensions | 6.6" x 4.6" |
Specifications are courtesy of ASUS @ http://ca.asus.com/en/Graphics_Cards/AMD_Series/EAH6670DIS1GD5/#specifications
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I am actually impressed the performance increase was so good when the two were combined
Here's my rig specs:
Motherboard: Gigabyte GA-A75-D3H
Processor: AMD A8-3850 (with integrated HD6550 graphics)
Memory: 8Gb Kingston 1600MHz
Video: Gigabyte Radeon HD6670 1GB DDR3 128-bit
HDD: WD 500Gb 7200Rpm
PSU: Inter-Tech Energon 550W
I would be very grateful for a helpful reply.
Cheers.
You may have to enable it via the Catalyst Control Panel. Also, make sure your monitor is plugged in the motherboard video output.
With the 6670 not plugged in I've setup BIOS to use the primary display graphics ONBOARD
- Installed the latest AMD Catalyst (12.8)
- Plugged in the discreet card and swiched monitor cable from onbord DVI to the dedicated DVI
- Enabled in Catalys the AMD Dual Graphics option (there is no Crossfire option only this one)
After I've read some opinions I found out that monitor should be in onbord port as you also mentioned and I've changed it then disabled and re-enabled dual graphics.
Here's a printscreen:
Could it be that I don't have the DX11 installed or enabled somehow?
Also, someone told me that the APUs low bandwidth could slow the dedicated GPU down. That's why the dual graphics works poorly.
Is this possible?
Even though you use slower RAM than our test setup, you should still see the benefits of dual-GPU.