Podcast #285 - Frame Rating AMD Dual Graphics with Kaveri, Linux GPU Performance, and Dogecoin Mining!
Subject: General Tech | January 30, 2014 - 02:32 PM | Ken Addison
Tagged: podcast, frame rating, video, amd, Kaveri, A10 7850K, dual graphics, linux, opengl, Lenovo, IBM
PC Perspective Podcast #285 - 01/30/2014
Join us this week as we discuss Frame Rating AMD Dual Graphics with Kaveri, Linux GPU Performance, and Dogecoin Mining!
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Hosts: Ryan Shrout, Jeremy Hellstrom, Josh Walrath and Allyn Malventano
Week in Review:
News items of interest:
0:37:45 Quick Linux mention
And Motorola Mobility
Hardware/Software Picks of the Week:
Hybrid CrossFire that actually works
The road to redemption for AMD and its driver team has been a tough one. Since we first started to reveal the significant issues with AMD's CrossFire technology back in January of 2013 the Catalyst driver team has been hard at work on a fix, though I will freely admit it took longer to convince them that the issue was real than I would have liked. We saw the first steps of the fix released in August of 2013 with the release of the Catalyst 13.8 beta driver. It supported DX11 and DX10 games and resolutions of 2560x1600 and under (no Eyefinity support) but was obviously still less than perfect.
In October with the release of AMD's latest Hawaii GPU the company took another step by reorganizing the internal architecture of CrossFire on the chip level with XDMA. The result was frame pacing that worked on the R9 290X and R9 290 in all resolutions, including Eyefinity, though still left out older DX9 titles.
One thing that had not been addressed, at least not until today, was the issues that surrounded AMD's Hybrid CrossFire technology, now known as Dual Graphics. This is the ability for an AMD APU with integrated Radeon graphics to pair with a low cost discrete GPU to improve graphics performance and gaming experiences. Recently over at Tom's Hardware they discovered that Dual Graphics suffered from the exact same scaling issues as standard CrossFire; frame rates in FRAPS looked good but the actually perceived frame rate was much lower.
A little while ago a new driver made its way into my hands under the name of Catalyst 13.35 Beta X, a driver that promised to enable Dual Graphics frame pacing with Kaveri and R7 graphics cards. As you'll see in the coming pages, the fix definitely is working. And, as I learned after doing some more probing, the 13.35 driver is actually a much more important release than it at first seemed. Not only is Kaveri-based Dual Graphics frame pacing enabled, but Richland and Trinity are included as well. And even better, this driver will apparently fix resolutions higher than 2560x1600 in desktop graphics as well - something you can be sure we are checking on this week!
Just as we saw with the first implementation of Frame Pacing in the Catalyst Control Center, with the 13.35 Beta we are using today you'll find a new set of options in the Gaming section to enable or disable Frame Pacing. The default setting is On; which makes me smile inside every time I see it.
The hardware we are using is the same basic setup we used in my initial review of the AMD Kaveri A8-7600 APU review. That includes the A8-7600 APU, an Asrock A88X mini-ITX motherboard, 16GB of DDR3 2133 MHz memory and a Samsung 840 Pro SSD. Of course for our testing this time we needed a discrete card to enable Dual Graphics and we chose the MSI R7 250 OC Edition with 2GB of DDR3 memory. This card will run you an additional $89 or so on Amazon.com. You could use either the DDR3 or GDDR5 versions of the R7 250 as well as the R7 240, but in our talks with AMD they seemed to think the R7 250 DDR3 was the sweet spot for the CrossFire implementation.
Both the R7 250 and the A8-7600 actually share the same number of SIMD units at 384, otherwise known as 384 shader processors or 6 Compute Units based on the new nomenclature that AMD is creating. However, the MSI card is clocked at 1100 MHz while the GPU portions of the A8-7600 APU are running at only 720 MHz.
So the question is, has AMD truly fixed the issues with frame pacing with Dual Graphics configurations, once again making the budget gamer feature something worth recommending? Let's find out!
Subject: Systems | March 27, 2012 - 02:49 PM | Jeremy Hellstrom
Tagged: amd, llano, dual graphics, a8-3870K
Dual Llano graphics has become one of PC Perspective's most recommended ways of getting yourself a laptop capable of decent gaming performance without spending a lot of money. It is not as well known as a desktop solution, which X-Bit Labs intends to explore in their latest review. They've taken the high end A8-3870K, overclocked it and paired it with an HD 6670 and then compared it to two similar systems, one using a Intel Pentium G850 and one with a Core i3-2120. The results of their testing just might surprise you.
"Today we are going to compare the performance of Socket FM1 and LGA 1155 systems. Will a hybrid Llano processor be able to beat the entry-level Intel CPU paired with an entry-level graphics accelerator? How efficient AMD Dual Graphics technology is? Does overclocking make Socket FM1 systems more attractive?"
Here are some more Systems articles from around the web:
- Scan 3XS Vengeance GTX680 Z68 OC System @ OC3D
- HP TouchSmart Elite 7320 Review @ TechReviewSource
- Building the Right Box @ Techgage
- Acer AX1930-UR10P Review @ TechReviewSource
- Puget Systems Echo: Intel and AMD Showdown at 65 Watts @ AnandTech
- Intel Xeon E5-2687W in Asus Z9PE-D8 WS dual CPU workstation @ The Inquirer
- HP TouchSmart 520 All-In-One @ TechSpot
EVGA Changes the Game Again
Dual-GPU graphics cards are becoming an interesting story. While both NVIDIA and AMD have introduced their own reference dual-GPU designs for quite some time, it is the custom build models from board vendors like ASUS and EVGA that really peak our interest because of their unique nature. Earlier this year EVGA released the GTX 460 2Win card that brought the worlds first (and only) graphics card with a pair of the GTX 460 GPUs on-board.
ASUS has released dual-GPU options as well including the ARES dual Radeon HD 5870 last year and the MARS II dual GTX 580 just this past August but they were both prohibitively rare and expensive. The EVGA "2Win" series, which we can call it now that there are two of them, is still expensive but much more in line with the performance per dollar of the rest of the graphics card market. When the company approached us last week about the new GTX 560 Ti 2Win, we jumped at the chance to review it.
The EVGA GeForce GTX 560 Ti 2Win 2GB
The new GTX 560 Ti 2Win from EVGA follows directly in the footsteps of the GTX 460 model - we are essentially looking at a pair of GTX 560 Ti GPUs on a single PCB running in SLI multi-GPU mode. Clock speeds, memory capacity, performance - it should all be pretty much the same as if you were running a pair of GTX 560 Ti cards independently.
Just as with the GTX 460 2Win, EVGA is the very first company to offer such a product. NVIDIA didn't design a reference platform and pass it along to everyone like they did with the GTX 590 - this is all EVGA.
Subject: Graphics Cards, Processors | July 13, 2011 - 02:13 PM | Ryan Shrout
Tagged: llano, dual graphics, crossfire, APU, amd, a8-3850, 3850
Last week we posted a short video about the performance of AMD's Llano core A-series of APUs for gaming and the response was so positive that we have decided to continue on with some other short looks at features and technologies with the processor. For this video we decided to investigate the advantages and performance of the Dual Graphics technology - the AMD APU's ability to combine the performance of a discrete GPU with the Radeon HD 6550D graphics integrated on the A8-3850 APU.
For this test we set our A8-3850 budget gaming rig to the default clock speeds and settings and used an AMD Radeon HD 6570 1GB as our discrete card of choice. With a price hovering around $70, the HD 6570 would be a modest purchase for a user that wants to add some graphical performance to their low-cost system but doesn't stretch into the market of the enthusiast.
The test parameters were simple: we knew the GPU on the Radeon HD 6570 was a bit better than that of the A8-3850 APU so we compared performance of the discrete graphics card ALONE to the performance of the system when enabling CrossFire, aka Dual Graphics technology. The results are pretty impressive:
You may notice that these percentages of scaling are higher than those we found in our first article about Llano on launch day. The reasoning is that we used the Radeon HD 6670 there and found that while compatible by AMD's directives, the HD 6670 is overpowering the HD 6550D GPU on the APU and the performance delta it provides is smaller by comparison.
So, just as we said with our APU overclocking video, while adding in a discrete card like the HD 6570 won't turn your PC into a $300 graphics card centered gaming machine it will definitely help performance by worthwhile amounts without anyone feeling like they are wasting the silicon on the A8-3850.
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