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AMD Dual Graphics Review | Hybrid CrossFire, reboot
The solution that AMD is now calling Dual Graphics, was previously called Hybrid CrossFire. Technically speaking, the former name was more accurate as the feature uses AMD's multi-GPU technology to scale APU performance with discrete graphics.
This means you can take an APU-based system, add a Radeon graphics card, combine them into one configuration, and use the resulting combined graphics performance resource to achieve higher frame rates than the same components alone.
Solution Dual Graphics was introduced by AMD along with the Llano GPU in 2011; You can find the corresponding review on our resource. While we understand the appeal of Hybrid CrossFire, Several flaws were discovered in the first implementation. Then we expected to revise the technology Dual Graphics when she becomes more mature. As time passed, the Llano architecture gave way to Trinity, which in turn was replaced by Richland.
AMD had three whole generations to refine and improve the hardware and software components of the technology. So we thought it was time to test Dual Graphics more thoroughly. After all, AMD is making some pretty bold claims about the potential benefits of this feature. The slide below is taken from the presentation accompanying the Richland premiere:
Over the past two years, we have accumulated many questions about Dual Graphics. For example, AMD does not recommend pairing APUs with video cards higher than Radeon HD 6670 due to possible imbalance of graphic resources. However, we have heard that Radeon HD 7750 perfectly complements the array Dual Graphics. Is it even possible to interface an APU with a VLIW5 graphics architecture and a discrete GCN-based card using this technology? If so, will the cards provide more money? Radeon HD 6670 worthwhile results that justify the overpayment? If any restrictions Dual Graphics, which are worth knowing about? In this material we will try to answer these questions.
We also wanted to include our FCAT-based analysis, which uses video capture to measure the number of dropped and short frames (too small for the naked eye to perceive) generated by multi-GPU configurations. Unfortunately, we could not get the utility to successfully process video from Dual Graphics. AMD said that the problem we encountered cannot be fixed in the foreseeable future. If you remember, in the review of AMD A10-6700 and A10-6800K The problem was that bits of adjacent frames were shown where they should not be, something like this:
See the gap in the image? We do not agree with this state of affairs, so we found a way to objectively assess the effectiveness Dual Graphics: We used video capture, which is commonly used by FCAT to generate data. You'll be amazed at the unexpected results (at least we were). We'll talk more about video demonstrations later.
AMD Dual Graphics Review | Demo video, test bench and benchmarks
We always wanted to show exactly the picture that we see when comparing the output quality of different graphics adapters. The problem is that lossless video capture at 60Hz at 1920x1080 pixels creates a huge video file, too large to download. Additionally, when you upload this file to YouTube, its frame rate is reduced to 30 FPS, throwing away half the information from the original file. Luckily, thanks to testing YouTube on HTML5, we found a solution. You need to activate the beta feature by going to link, and click the "Join HTML5 testing" button:
After logging in, you should close and restart your web browser. Now you need to access the HTML5 based speed control through the settings button in the lower right corner of the video playback window:
We recorded our results at half the speed. Therefore, at the “normal” speed settings in YouTube (30 FPS), you can carefully examine the result at a lower speed than in reality and feel the difference. Then, if you want to see the output image as it looks during testing, set the video speed to 2x (60 FPS). Thanks to this technique, we have a great opportunity to demonstrate the gaming experience at 60Hz frame rate, and for readers to see what we see when we collect the results.
But first we would like to give some tips regarding HTML5 testing. Make sure the video is fully loaded before playing it at 2x speed. To do this, as a rule, you need a wider channel, since jumps and freezes will interfere with the normal perception of the picture. We have also seen situations where YouTube did not register changes to speed settings without reloading the page. Finally, we recommend watching the video at normal speed first, and then at high speed. This makes it much easier to see differences in frame rate smoothness.
During testing, we are using Catalyst 13.6 Beta drivers instead of Catalyst 13.8 Beta, which adds frame adjustment functionality for smoother, more stable output. AMD says the new driver does not affect configurations Dual Graphics. It only works with a few discrete GPUs. Otherwise, the software of other system components has been updated to the latest versions.
| Test bench configuration | |
| CPU | AMD A10-6800K (Richland), base frequency 4.1 GHz, 4.4 GHz Turbo Core, integrated Radeon HD 8670D (844 MHz) |
| Motherboard | ASRock FM2A85X, Socket FM2, chipset: AMD A85 |
| RAM | AMD Gamer Series Memory, 2 x 4 GB, DDR3-1866, CL 13-13-13-34 |
| Storage device | Western Digital Caviar Black 750 GB 7200 rpm, 32 MB cache, SATA 3Gb/s |
| Net | Built-in Gigabit LAN controller |
| Video card | AMD Radeon HD 6670 DDR3, 800 MHz GPU, 1 GB GDDR5 at 800 MHz (1600 MHz effective) |
| power unit | ePower EP-1200E10-T2 1200 W ATX12V, EPS12V |
| OS | Microsoft Windows 8 Pro x64 |
| DirectX | DirectX 11 |
| Graph. drivers | AMD Catalyst 13.6 Beta 2 |
| Tests and settings | |
| Metro: Last Light | Version 1.0.0.0, DirectX 10, built-in benchmark |
| The Elder Scrolls V: Skyrim | Version 1.6.89.06, Version 1.5.26.05, 25 p. Fraps |
| Tomb Raider | Version 1.04, THG benchmark, 60 pp. Fraps |
| F1 2012 | Version 1.2, Direct X 11, built-in benchmark, 60 sec. Fraps |
| BioShock Infinite | Version 1.0.1441711, built-in benchmark, Fraps |
| Company Of Heroes 2 | Version 3.0.0.9804, built-in benchmark, Fraps |
For computer motherboards, AMD graphics controllers are used to save power consumption, previously used only in select chipsets of the AMD 700 and AMD 800 series. ATI hybrid graphics technology was announced on January 23, 2008 with the Radeon HD 2400 and Radeon HD 3400 series video cards supporting hybrid graphics . ATI was originally announced as a component that would only be supported on Windows Vista, but in August 2008, AMD included support for this technology in drivers for Windows XP. The architecture is patented by ATI Technologies. The previous generation of hybrid Crossfire was paired with 890GX or 880G (with Radeon HD4290 and HD 4250 respectively) AMD 800 series chipset motherboards with an HD 5450, 5550, 5570 or 5670 Radeon graphics card from the Radeon HD 5000 series. Newer information suggests that AMD A6 and A8 series APUs could be used in hybrid Crossfire (subsequently called "Dual Graphics") with HD 6570 and HD 6670 graphics cards. Second-generation Trinity A-series dual-core processors such as the A8-5500 and A10-5700 , with HD 75/76 series GPUs and based on Socket FM2, are expected in June 2012.
Technologies
Hybrid CrossFire / Hybrid CrossFireX / Dual Graphics
Hybrid CrossFireX is a technology that allows the IGP or integrated GPU, as well as the discrete GPU or graphics engine, to create a CrossFire setup to enhance the system's capabilities for rendering 3D scenes, while Hybrid CrossFire X technology is present on the 790GX and 890G, with two physical PCI-E x16 slots with x8 bandwidth can form a hybrid CrossFire X setup with two graphics cards and IGP, improving 3D rendering capabilities.
Initial results when paired with the Radeon HD 2400 graphics card result in performance gains of up to 50% over standalone Radeon HD 2400 performance, and laptops will also be available. Three modes of operation have been observed as follows:
| Mode | Built-in IGP | PCI-E discrete graphics card(s) (including AXIOM/MXM module(s)) |
|
|---|---|---|---|
| Built-in IGP only | No | Yes | |
| Discrete mode | Yes | No | |
| Hybrid mode | No | No | |
| Notes: Hybrid CrossFire X was previously only available on the 790GX, 780G, 760G, 785G and 880G and 890GX chipsets, but AMD Fusion AP6 series A6 and A8 series can now be used in "Dual Graphic" configurations with HD 6570 and HD 6670 video cards. |
|||
One notable issue is that when the IGP is paired with a DirectX 10.1 graphics card, the entire CrossFire hybrid setup will only support DirectX 10.0 and the UVD in the IGP will be disabled. However, the new 785G chipset has solved this problem and supports DirectX 10.1.
Since 2012, it seems that this "hybrid CrossFireX" is called "Dual Graphics". AMD claims that - for the A8-3850 APU paired with an HD 6670 graphics card - dual graphics more than doubles performance (123% benchmark increase) compared to the APU alone. But the performance of the standalone HD 6670 graphics card does not appear to be specified or compared. However, Japanese computer magazine ASCII published charts showing significant improvements for the combination of the A8-3850 with the HD 6450, HD 6570 and HD 6670, as did Tom's Hardware and Hardware Canucks hardware.
SurroundView
SurroundView technology is a multi-display technology available on the ATI RS480 chipset. This technology supports connecting multiple monitors. Up to four monitors with a discrete graphics card can be connected to supported video output ports (one via LVDS, which is either an HDMI or DVI-D port, and one D-Sub port), in "extended desktop" mode or "duplicate mode" ", for a better desktop experience and greater flexibility. The integrated GPU and discrete GPU work in parallel with multiple displays. Therefore, it is different from Hybrid CrossFireX.
Newer products have AMD Eyefinity.
PowerXpress
Available on major mobile IGP chipsets (AMD M780G and M690), PowerXpress technology enables seamless integrated graphics switching (IGP) for discrete graphics on laptops when the laptop is connected to AC power for enhanced 3D rendering capabilities, and vice versa when unplugged from the power source to increase battery life. The process does not require a system reboot, both in the past and some modern laptop implementations.
Current Linux support for this feature may be complete with Catalyst 11.4 (fglrx driver 8.840 or later) according to the Phoronix article. X.org currently does not support hot-plugging smooth graphics cards without restarting the X server.
Technology AMD Hybrid Graphics technology, is AMD's collective brand for the Radeon line of discrete and integrated graphics processors, increasing performance and performance while saving power consumption in GPUs. Technology previously applied to select AMD 700 chipset and AMD 800 series chipset chipsets. ATI Hybrid Graphics technology was announced on January 23, 2008, with the Radeon HD 2400 and Radeon HD 3400 series video cards supporting hybrid graphics functionality. ATI initially announced that this feature would only be supported on Vista, but in August 2008 they included support in their Windows XP drivers. The architecture is patented by ATI. The previous generation Hybrid Crossfire was paired with 890GX or 880G (with Radeon HD4290 and HD 4250 respectively) AMD 800 series chipset motherboards with an HD 5450, 5550, 5570 or 5670 Radeon graphics card from the Radeon HD 5000 series. Newer information suggests that AMD A6 and A8 series APUs could be used in hybrid Crossfire (subsequently called "Dual Graphics") with HD 6570 and HD 6670 graphics cards. Second-generation Trinity A-series dual-core processors such as the A8-5500 and A10-5700, with HD 75/76 series GPUs based on Socket FM2, expected in June 2012.
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Technologies
Hybrid CrossFire / Hybrid CrossFireX / Dual Graphics
Hybrid CrossFireX is a technology that allows the IGP or integrated GPU, and the discrete GPU or graphics engine to create a CrossFire setup to enhance the system's capabilities for rendering 3D scenes, while Hybrid CrossFire X technology is present on the 790GX and 890G, with two PCI-E x16 physical slots with x8 bandwidth can form a hybrid CrossFire X setup with two graphics cards and IGP, improving 3D rendering capabilities.
Initial results when paired with the Radeon HD 2400 graphics card result in performance gains of up to 50% over standalone Radeon HD 2400 performance, and laptops will also be available. Three modes of operation have been observed as follows:
| Mode | Built-in IGP | PCI-E discrete graphics card(s) (including AXIOM/MXM module(s)) |
|
|---|---|---|---|
| Built-in IGP only | No | Yes | |
| Discrete mode | Yes | No | |
| Hybrid mode | No | No | |
| Notes: Hybrid CrossFire X was previously only available on the 790GX, 780G, 760G, 785G and 880G and 890GX chipsets, but AMD Fusion AP6 series A6 and A8 series can now be used in "Dual Graphic" configurations with HD 6570 and HD 6670 video cards. |
|||
One notable issue is that when the IGP is paired with a DirectX 10.1 graphics card, the entire CrossFire hybrid setup will only support DirectX 10.0 and the UVD in the IGP will be disabled. However, the new 785G chipset has solved this problem and supports DirectX 10.1.
Since 2012, it seems that this "hybrid CrossFireX" is called "Dual Graphics". AMD claims that - for the A8-3850 APU paired with an HD 6670 graphics card - dual graphics more than doubles performance (123% benchmark increase) compared to the APU alone. But the performance of the standalone HD 6670 graphics card does not appear to be specified or compared. However, Japanese computer magazine ASCII published charts showing significant improvements for the combination of the A8-3850 with the HD 6450, HD 6570 and HD 6670, as did Tom's Hardware and Hardware Canucks hardware.
SurroundView
SurroundView technology is a multi-display technology available on the ATI RS480 chipset. This technology supports connecting multiple monitors. Up to four monitors with a discrete graphics card can be connected to supported video output ports (one via LVDS, which is either an HDMI or DVI-D port, and one D-Sub port), in "extended desktop" mode or "duplicate mode" ", for better desktop experience and greater flexibility. The integrated GPU and discrete GPU work in parallel with multiple displays. Therefore, it is different from Hybrid CrossFireX.
Newer products have AMD Eyefinity.
PowerXpress
Available on major mobile IGP chipsets (AMD M780G and M690), PowerXpress technology enables seamless integrated graphics switching (IGP) for discrete graphics on laptops when the laptop is connected to AC power for enhanced 3D rendering capabilities, and vice versa when unplugged from the power source to increase battery life. The process does not require a system reboot, both in the past and some modern laptop implementations.
Current Linux support for this feature may be complete with Catalyst 11.4 (fglrx driver 8.840 or later) according to the Phoronix article. X.org currently does not support hot-plugging smooth graphics cards without restarting the X server.
| Mode | Connected to AC power? | Built-in IGP | discrete GPU AXIOM/MXM module(s) | Default PowerPlay power settings |
|---|---|---|---|---|
| AC mode | Yes | Yes | No | ""Maximum performance"" |
| DC mode | No | No | Yes | ""Maximum battery life"" |
AMD's internal technology name is PowerXpress
- PowerXpress v1 - v3.0, were branded under the same name, "PowerXpress",
- PowerXpress v4.0, external name renamed as "Dynamic Switchable Graphics" (DSG).
- PowerXpress v5.0 - present, DSG renamed "Enduro".