Author:
Manufacturer: AMD

An issue of variance

AMD just sent along an email to the press with a new driver to use for Radeon R9 290X and Radeon R9 290 testing going forward.  Here is the note:

We’ve identified that there’s variability in fan speeds across AMD R9 290 series boards. This variability in fan speed translates into variability of the cooling capacity of the fan-sink.

The flexibility of AMD PowerTune technology enables us to correct this variability in a driver update. This update will normalize the fan RPMs to the correct values.

The correct target RPM values are 2200RPM for the AMD Radeon R9 290X ‘Quiet mode’, and 2650RPM for the R9 290. You can verify these in GPU-Z.

If you’re working on stories relating to R9 290 series products, please use this driver as it will reduce any variability in fan speeds. This driver will be posted publicly tonight.

Great!  This is good news!  Except it also creates some questions. 

When we first tested the R9 290X and the R9 290, we discussed the latest iteration of AMD's PowerTune technology. That feature attempts to keep clocks as high as possible under the constraints of temperature and power.  I took issue with the high variability of clock speeds on our R9 290X sample, citing this graph:

clock-avg.png

I then did some digging into the variance and the claims that AMD was building a "configurable" GPU.  In that article we found that there were significant performance deltas between "hot" and "cold" GPUs; we noticed that doing simple, quick benchmarks would produce certain results that were definitely not real-world in nature.  At the default 40% fan speed, Crysis 3 showed 10% variance with the 290X at 2560x1440:

Crysis3_2560x1440_OFPS.png

Continue reading our coverage of the most recent driver changes and how they affect the R9 290X and R9 290!!

AMD Releases Catalyst 13.11 Beta 9.2 Driver To Correct Performance Variance Issue of R9 290 Series Graphics Cards

Subject: Graphics Cards, Cases and Cooling | November 8, 2013 - 02:41 AM |
Tagged: R9 290X, powertune, hawaii, graphics drivers, gpu, GCN, catalyst 13.11 beta, amd, 290x

AMD recently launched its 290X graphics card, which is the new high-end single GPU solution using a GCN-based Hawaii architecture. The new GPU is rather large and incorporates an updated version of AMD's PowerTune technology to automatically adjust clockspeeds based on temperature and a maximum fan speed of 40%. Unfortunately, it seems that some 290X cards available at retail exhibited performance characteristics that varied from review units.

Retail versus Review Sample Performance Variance Testing.jpg

AMD has looked into the issue and released the following statement in response to the performance variances (which PC Perspective is looking into as well).

Hello, We've identified that there's variability in fan speeds across AMD R9 290 series boards. This variability in fan speed translates into variability of the cooling capacity of the fan-sink. The flexibility of AMD PowerTune technology enables us to correct this variability in a driver update. This update will normalize the fan RPMs to the correct values.

The correct target RPM values are 2200RPM for the AMD Radeon R9 290X "Quiet mode", and 2650RPM for the R9 290. You can verify these in GPU-Z. If you're working on stories relating to R9 290 series products, please use this driver as it will reduce any variability in fan speeds. This driver will be posted publicly tonight.

From the AMD statement, it seems to be an issue with fan speeds from card to card causing the performance variances. With a GPU that is rated to run at up to 95C, a fan limited to 40% maximum, and dynamic clockspeeds, it is only natural that cards could perform differently, especially if case airflow is not up to par. On the other hand, the specific issue pointed out by other technology review sites (per my understanding, it was initially Tom's Hardware that reported on the retail vs review sample variance) is  an issue where the 40% maximum on certain cards is not actually the RPM target that AMD intended.

AMD intended for the Radeon R9 290X's fan to run at 2200RPM (40%) in Quiet Mode and the fan on the R9 290 (which has a maximum fan speed percentage of 47%) to spin at 2650 RPM in Quiet Mode. However, some cards 40% values are not actually hitting those intended RPMs, which is causing performance differences due to cooling and PowerTune adjusting the clockspeeds accordingly.

Luckily, the issue is being worked on by AMD, and it is reportedly rectified by a driver update. The driver update ensures that the fans are actually spinning at the intended speed when set to the 40% (R9 290X) or 47% (R9 290) values in Catalyst Control Center. The new driver, which includes the fix, is version Catalyst 13.11 Beta 9.2 and is available for download now. 

If you are running a R9 290 or R9 290X in your system, you should consider updating to the latest driver to ensure you are getting the cooling (and as a result gaming) performance you are supposed to be getting.

Catalyst 13.11 Beta 9.2 is available from the AMD website.

Also read:

Stay tuned to PC Perspective for more information on the Radeon R9 290 series GPU performance variance issue as it develops.

Image credit: Ryan Shrout (PC Perspective).

Source: AMD

PC Perspective Podcast #276 - AMD Radeon R9 290, Gigabyte Z87X-UD5H, SSD Torture tests and more!

Subject: General Tech | November 7, 2013 - 05:12 PM |
Tagged: Z87X-UD5H, video, R9 290X, r9 290, podcast, nvidia, gtx 780, grid, ec2, amd, amazon

PC Perspective Podcast #276 - 11/07/2013

Join us this week as we discuss the AMD Radeon R9 290, Gigabyte Z87X-UD5H, SSD Torture tests and more!

You can subscribe to us through iTunes and you can still access it directly through the RSS page HERE.

The URL for the podcast is: http://pcper.com/podcast - Share with your friends!

  • iTunes - Subscribe to the podcast directly through the iTunes Store
  • RSS - Subscribe through your regular RSS reader
  • MP3 - Direct download link to the MP3 file

Hosts: Ryan Shrout, Jeremy Hellstrom, Josh Walrath, and Allyn Malventano

 
Due to a recording error, portions of the audio track are missing. Because of this, the audio will skip around in various places. This is actually happening, and you aren't crazy (well maybe, but not because of the audio). Considering these files were almost not recovered, it's a miracle we have this much of the recording.
 
Program length: 0:47:56
  1. Week in Review:
  2. Hardware/Software Picks of the Week:
  3. podcast@pcper.com
  4. Closing/outro

 

Author:
Manufacturer: AMD

Clock Variations

When AMD released the Radeon R9 290X last month, I came away from the review very impressed with the performance and price point the new flagship graphics card was presented with.  My review showed that the 290X was clearly faster than the NVIDIA GeForce GTX 780 and (and that time) was considerably less expensive as well - a win-win for AMD without a doubt. 

But there were concerns over a couple of aspects of the cards design.  First was the temperature and, specifically, how AMD was okay with this rather large silicon hitting 95C sustained.  Another concern, AMD has also included a switch at the top of the R9 290X to switch fan profiles.  This switch essentially creates two reference defaults and makes it impossible for us to set a baseline of performance.  These different modes only changed the maximum fan speed that the card was allowed to reach.  Still, performance changed because of this setting thanks to the newly revised (and updated) AMD PowerTune technology.

We also saw, in our initial review, a large variation in clock speeds both from one game to another as well as over time (after giving the card a chance to heat up).  This led me to create the following graph showing average clock speeds 5-7 minutes into a gaming session with the card set to the default, "quiet" state.  Each test is over a 60 second span.

clock-avg.png

Clearly there is variance here which led us to more questions about AMD's stance.  Remember when the Kepler GPUs launched.  AMD was very clear that variance from card to card, silicon to silicon, was bad for the consumer as it created random performance deltas between cards with otherwise identical specifications. 

When it comes to the R9 290X, though, AMD claims both the GPU (and card itself) are a customizable graphics solution.  The customization is based around the maximum fan speed which is a setting the user can adjust inside the Catalyst Control Center.  This setting will allow you to lower the fan speed if you are a gamer desiring a quieter gaming configuration while still having great gaming performance.  If you are comfortable with a louder fan, because headphones are magic, then you have the option to simply turn up the maximum fan speed and gain additional performance (a higher average clock rate) without any actual overclocking.

Continue reading our article on the AMD Radeon R9 290X - The Configurable GPU!!!

Podcast #275 - AMD Radeon R9 290X, ARMTechCon 2013, NVIDIA Pricedrops and more!

Subject: General Tech | October 31, 2013 - 03:48 PM |
Tagged: podcast, video, R9 290X, amd, radeon, 290x crossfire, 280x, r9 280x, gtx 770, gtx 780, arm, mali, Altera

PC Perspective Podcast #275 - 10/31/2013

Join us this week as we discuss the AMD Radeon R9 290X, ARMTechCon 2013, NVIDIA Pricedrops and more!

You can subscribe to us through iTunes and you can still access it directly through the RSS page HERE.

The URL for the podcast is: http://pcper.com/podcast - Share with your friends!

  • iTunes - Subscribe to the podcast directly through the iTunes Store
  • RSS - Subscribe through your regular RSS reader
  • MP3 - Direct download link to the MP3 file

Hosts: Ryan Shrout, Jeremy Hellstrom, Josh Walrath, and Allyn Malventano

 
Program length: 1:22:37
  1. Week in Review:
    1. 0:55:40
  2. 0:59:20 This episode is brought to you by Carbonite.com! Use offer code PC for two free months!
      1. Intel Series 9 Chipset
  3. Hardware/Software Picks of the Week:
  4. podcast@pcper.com
  5. Closing/outro

 

(Nitroware) AMD Radeon R9 290X Discussion

Subject: General Tech, Graphics Cards | October 28, 2013 - 10:21 PM |
Tagged: R9 290X, amd

Hawaii launches and AMD sells their inventory (all of it, in many cases). The Radeon R9 290X brought reasonably Titan-approaching performance to the $550-600 USD dollar value. Near and dear to our website, AMD also took the opportunity to address much of the Crossfire and Eyefinity frame pacing issues.

amd-gpu14-06.png

Nitroware also took a look at the card... from a distance because they did not receive a review unit. His analysis was based on concepts, such as revisions to AMD design over the life of their Graphics Core Next architecture. The discussion goes back to the ATI Rage series of fixed function hardware and ends with a comparisson between the Radeon HD 7900 "Tahiti" and the R9 290X "Hawaii".

Our international viewers (or even curious North Americans) might also like to check out the work Dominic undertook compiling regional pricing and comparing those values to currency conversion data. There is more to an overview (or review) than benchmarks.

Source: NitroWare

Fall of a Titan, check out the R9 290X

Subject: Graphics Cards | October 24, 2013 - 02:38 PM |
Tagged: radeon, R9 290X, kepler, hawaii, amd

If you didn't stay up to watch our live release of the R9 290X after the podcast last night you missed a chance to have your questions answered but you will be able to watch the recording later on.  The R9 290X arrived today, bringing 4K and Crossfire reviews as well as single GPU testing on many a site including PCPer of course.  You don't just have to take our word for it, [H]ard|OCP was also putting together a review of AMD's Titan killer.  Their benchmarks included some games we haven't adopted yet such as ARMA III.  Check out their results and compare them to ours, AMD really has a winner here.

1382088059a47QS23bNQ_4_8_l.jpg

"AMD is launching the Radeon R9 290X today. The R9 290X represents AMD's fastest single-GPU video card ever produced. It is priced to be less expensive than the GeForce GTX 780, but packs a punch on the level of GTX TITAN. We look at performance, the two BIOS mode options, and even some 4K gaming."

Here are some more Graphics Card articles from around the web:

Graphics Cards

Source: [H]ard|OCP

Podcast #274 - NVIDIA G-SYNC, R9 290X Benchmarks, and Process Technology for Next Gen Graphics

Subject: General Tech | October 24, 2013 - 02:21 PM |
Tagged: podcast, video, R9 290X, g-sync, gsync, never settle, the way it's meant to be played, carmack, sweeny, andersson

PC Perspective Podcast #274 - 10/24/2013

Join us this week as we discuss NVIDIA G-SYNC, R9 290X Benchmarks, and Process Technology for Next Gen Graphics!

You can subscribe to us through iTunes and you can still access it directly through the RSS page HERE.

The URL for the podcast is: http://pcper.com/podcast - Share with your friends!

  • iTunes - Subscribe to the podcast directly through the iTunes Store
  • RSS - Subscribe through your regular RSS reader
  • MP3 - Direct download link to the MP3 file

Hosts: Ryan Shrout, Jeremy Hellstrom, Josh Walrath, and Allyn Malventano

 
Program length: 1:16:43
  1. Week in Review:
    1. 0:07:10 NVIDIA "The Way It's Meant to be Played" 2013 Press Event
  2. News items of interest:
  3. Hardware/Software Picks of the Week:
    1. Allyn: Did you know (Windows 8.1 safe mode)
  4. podcast@pcper.com
  5. Closing/outro

 

Author:
Manufacturer: AMD

A bit of a surprise

Okay, let's cut to the chase here: it's late, we are rushing to get our articles out, and I think you all would rather see our testing results NOW rather than LATER.  The first thing you should do is read my review of the AMD Radeon R9 290X 4GB Hawaii graphics card which goes over the new architecture, new feature set, and performance in single card configurations. 

Then, you should continue reading below to find out how the new XDMA, bridge-less CrossFire implementation actually works in both single panel and 4K (tiled) configurations.

IMG_1802.JPG

 

A New CrossFire For a New Generation

CrossFire has caused a lot of problems for AMD in recent months (and a lot of problems for me as well).  But, AMD continues to make strides in correcting the frame pacing issues associated with CrossFire configurations and the new R9 290X moves the bar forward.

Without the CrossFire bridge connector on the 290X, all of the CrossFire communication and data transfer occurs over the PCI Express bus that connects the cards to the entire system.  AMD claims that this new XDMA interface was designed for Eyefinity and UltraHD resolutions (which were the subject of our most recent article on the subject).  By accessing the memory of the GPU through PCIe AMD claims that it can alleviate the bandwidth and sync issues that were causing problems with Eyefinity and tiled 4K displays.

Even better, this updated version of CrossFire is said to compatible with the frame pacing updates to the Catalyst driver to improve multi-GPU performance experiences for end users.

IMG_1800.JPG

When an extra R9 290X accidentally fell into my lap, I decided to take it for a spin.  And if you have followed my graphics testing methodology in the past year then you'll understand the important of these tests.

Continue reading our article Frame Rating: AMD Radeon R9 290X CrossFire and 4K Preview Testing!!

Author:
Manufacturer: AMD

A slightly new architecture

Note: We also tested the new AMD Radeon R9 290X in CrossFire and at 4K resolutions; check out that full Frame Rating story right here!!

Last month AMD brought media, analysts, and customers out to Hawaii to talk about a new graphics chip coming out this year.  As you might have guessed based on the location: the code name for this GPU was in fact, Hawaii. It was targeted at the high end of the discrete graphics market to take on the likes of the GTX 780 and GTX TITAN from NVIDIA. 

Earlier this month we reviewed the AMD Radeon R9 280X, R9 270X, and the R7 260X. None of these were based on that new GPU.  Instead, these cards were all rebrands and repositionings of existing hardware in the market (albeit at reduced prices).  Those lower prices made the R9 280X one of our favorite GPUs of the moment as it offers performance per price points currently unmatched by NVIDIA.

But today is a little different, today we are talking about a much more expensive product that has to live up to some pretty lofty goals and ambitions set forward by the AMD PR and marketing machine.  At $549 MSRP, the new AMD Radeon R9 290X will become the flagship of the Radeon brand.  The question is: to where does that ship sail?

 

The AMD Hawaii Architecture

To be quite upfront about it, the Hawaii design is very similar to that of the Tahiti GPU from the Radeon HD 7970 and R9 280X cards.  Based on the same GCN (Graphics Core Next) architecture AMD assured us would be its long term vision, Hawaii ups the ante in a few key areas while maintaining the same core.

01.jpg

Hawaii is built around Shader Engines, of which the R9 290X has four.  Each of these includes 11 CU (compute units) which hold 4 SIMD arrays each.  Doing the quick math brings us to a total stream processor count of 2,816 on the R9 290X. 

Continue reading our review of the AMD Radeon R9 290X 4GB Graphics Card!!