AMD Cards Suffer From Spikey Frame Latency Windows 8

"While doing a Windows 8 review comparing NVidias GeForce GTX 660 Ti to AMDs Radeon HD 7950, TechReport reviewers were puzzled to find that although both cards had comparable FPS (Frames per Second), the Radeon HD 7950 felt much jerkier than the GTX 660.

After closer inspection, TechReport experts found that this jitteriness is due to the Radoen HDs uneven frame latency. Simply put, frame latency is the time it takes the graphics to produce a single frame. Ideally, frame latency should be nearly constant for the same frame rate. But this doesnt seem to be the case with AMDs graphics cards.

After investigating the performance of the Radeon HD 7950 more closely, TechReports discovered that the card outputs a high-latency frame every few low-latency ones. In effect, giving the visual equivalent of stuttering or jitteriness while maintaining a high average frames per second.

Even when looking at minimum FPS, such frame latency spikes are not visible because they are smoothed by being averaged over a second. Nonetheless, the jitteriness effect they produce can be felt by most people.

When contacted for clarification, an AMD representative said that the report has raised some alarms at the company and that they hope to have some answers before the holiday.

Maybe it is about time minimum, maximum and average frame latencies should be part of all new graphics cards benchmarks."

Hopefully AMD can address the issue.

.

This ties into this:

http://www.gamespot.com/forums/topic/29328204/i-heard-this-on-a-tech-video..-amd-and-nvidia-?page=1

Those catalyst drivers got performance increases at the expense of something else it seems...

"While doing a Windows 8 review comparing NVidias GeForce GTX 660 Ti to AMDs Radeon HD 7950, TechReport reviewers were puzzled to find that although both cards had comparable FPS (Frames per Second), the Radeon HD 7950 felt much jerkier than the GTX 660.

After closer inspection, TechReport experts found that this jitteriness is due to the Radoen HDs uneven frame latency. Simply put, frame latency is the time it takes the graphics to produce a single frame. Ideally, frame latency should be nearly constant for the same frame rate. But this doesnt seem to be the case with AMDs graphics cards.

After investigating the performance of the Radeon HD 7950 more closely, TechReports discovered that the card outputs a high-latency frame every few low-latency ones. In effect, giving the visual equivalent of stuttering or jitteriness while maintaining a high average frames per second.

Even when looking at minimum FPS, such frame latency spikes are not visible because they are smoothed by being averaged over a second. Nonetheless, the jitteriness effect they produce can be felt by most people.

When contacted for clarification, an AMD representative said that the report has raised some alarms at the company and that they hope to have some answers before the holiday.

Maybe it is about time minimum, maximum and average frame latencies should be part of all new graphics cards benchmarks."

Hopefully AMD can address the issue.

"While doing a Windows 8 review comparing NVidias GeForce GTX 660 Ti to AMDs Radeon HD 7950, TechReport reviewers were puzzled to find that although both cards had comparable FPS (Frames per Second), the Radeon HD 7950 felt much jerkier than the GTX 660.

After closer inspection, TechReport experts found that this jitteriness is due to the Radoen HDs uneven frame latency. Simply put, frame latency is the time it takes the graphics to produce a single frame. Ideally, frame latency should be nearly constant for the same frame rate. But this doesnt seem to be the case with AMDs graphics cards.

After investigating the performance of the Radeon HD 7950 more closely, TechReports discovered that the card outputs a high-latency frame every few low-latency ones. In effect, giving the visual equivalent of stuttering or jitteriness while maintaining a high average frames per second.

Even when looking at minimum FPS, such frame latency spikes are not visible because they are smoothed by being averaged over a second. Nonetheless, the jitteriness effect they produce can be felt by most people.

When contacted for clarification, an AMD representative said that the report has raised some alarms at the company and that they hope to have some answers before the holiday.

Maybe it is about time minimum, maximum and average frame latencies should be part of all new graphics cards benchmarks."

Hopefully AMD can address the issue.

[QUOTE="ronvalencia"][QUOTE="04dcarraher"]

"While doing a Windows 8 review comparing NVidias GeForce GTX 660 Ti to AMDs Radeon HD 7950, TechReport reviewers were puzzled to find that although both cards had comparable FPS (Frames per Second), the Radeon HD 7950 felt much jerkier than the GTX 660.

After closer inspection, TechReport experts found that this jitteriness is due to the Radoen HDs uneven frame latency. Simply put, frame latency is the time it takes the graphics to produce a single frame. Ideally, frame latency should be nearly constant for the same frame rate. But this doesnt seem to be the case with AMDs graphics cards.

After investigating the performance of the Radeon HD 7950 more closely, TechReports discovered that the card outputs a high-latency frame every few low-latency ones. In effect, giving the visual equivalent of stuttering or jitteriness while maintaining a high average frames per second.

Even when looking at minimum FPS, such frame latency spikes are not visible because they are smoothed by being averaged over a second. Nonetheless, the jitteriness effect they produce can be felt by most people.

When contacted for clarification, an AMD representative said that the report has raised some alarms at the company and that they hope to have some answers before the holiday.

Maybe it is about time minimum, maximum and average frame latencies should be part of all new graphics cards benchmarks."

Hopefully AMD can address the issue.

04dcarraher

http://techreport.com/review/23150/amd-radeon-hd-7970-ghz-edition/7

[QUOTE="04dcarraher"][QUOTE="ronvalencia"] Cat driver 12.11 beta remains in beta...ronvalencia

http://techreport.com/review/23150/amd-radeon-hd-7970-ghz-edition/7

it seems that with directx 11 feature games the 7000's are experiencing the issues

[QUOTE="ronvalencia"]

[QUOTE="04dcarraher"] Yet some have felt this affect from the release of the 7000 series, I highly doubt its because of the 12.11 drivers04dcarraher

http://techreport.com/review/23150/amd-radeon-hd-7970-ghz-edition/7

it seems that with directx 11 feature games the 7000's are experiencing the issues

Wow.. the 6970 is by far the worst there.

ronvalencia likes posting hand picked amd bias charts, nothing to see here folks. But on topic, I am sure it will be fixed by AMD soon enough if its a huge problem.

[QUOTE="04dcarraher"]

[QUOTE="ronvalencia"]

http://techreport.com/review/23150/amd-radeon-hd-7970-ghz-edition/7

hartsickdiscipl

it seems that with directx 11 feature games the 7000's are experiencing the issues

Wow.. the 6970 is by far the worst there.

[QUOTE="hartsickdiscipl"]

[QUOTE="04dcarraher"]

it seems that with directx 11 feature games the 7000's are experiencing the issues

04dcarraher

Wow.. the 6970 is by far the worst there.

There is no conspiracy, it just depends on the game, like batman being notorious for having problems in general and highly favorable to nvidia. Dirt showdown shows the exact opposite with nvidia cards having the latency problems, and max payne 3 has both brands trading blows.

another thread with nvidia fanboys crying....:D i like very much

another thread with nvidia fanboys crying....:D i like very much

blaznwiipspman1

[QUOTE="04dcarraher"]

[QUOTE="ronvalencia"]

http://techreport.com/review/23150/amd-radeon-hd-7970-ghz-edition/7

hartsickdiscipl

it seems that with directx 11 feature games the 7000's are experiencing the issues

Wow.. the 6970 is by far the worst there.

Just get it over with and move these over to system wars already.

Sick of seeing the same 3-4 people making these threads and arguing with each other.

ronvalencia likes posting hand picked amd bias charts, nothing to see here folks. But on topic, I am sure it will be fixed by AMD soon enough if its a huge problem.

V4LENT1NE

[QUOTE="ronvalencia"]

[QUOTE="04dcarraher"] Yet some have felt this affect from the release of the 7000 series, I highly doubt its because of the 12.11 drivers04dcarraher

http://techreport.com/review/23150/amd-radeon-hd-7970-ghz-edition/7

it seems that with directx 11 feature games the 7000's are experiencing the issues

Max Payne 3

With normal Radeon HD 7970 from http://techreport.com/review/22192/amd-radeon-hd-7970-graphics-processor/11

http://techreport.com/review/22653/nvidia-geforce-gtx-680-graphics-processor-reviewed/11

Cat 12.7 beta

http://techreport.com/review/23527/review-nvidia-geforce-gtx-660-graphics-card/4

Ugh, I was just about to buy a 7950 over a 660ti based on recommendations here.. Now I don't know what to do.

Ugh, I was just about to buy a 7950 over a 660ti based on recommendations here.. Now I don't know what to do.

Twin-Blade

Ugh, I was just about to buy a 7950 over a 660ti based on recommendations here.. Now I don't know what to do.

Twin-Blade

Depends on the Windows version and drivers. TC's techreport article was using version 12.11 beta XX driver. Officially, the latest end-user AMD Radeon HD driver is at version 12.10 e.g. http://support.amd.com/us/gpudownload/windows/Pages/radeonaiw_vista64.aspx

I plan to do my own test with Fraps(2) + FRAFS Bench Viewer(1) + Windows 8 + Radeon HD 7950 (@900Mhz AIB Firmware no Turbo) + Driver 12.10.

1. http://sourceforge.net/projects/frafsbenchview/

2. http://www.fraps.com/

PS; I have reverted back to the official version 12.10 drivers on my desktop PC with 7970 while my Silverstone Mini-ITX PC reminds as my test box.

From http://www.overclock.net/t/1337206/the-tech-report-does-the-radeon-hd-7950-stumble-in-windows-8/360#post_18855498

I've been saying this for a while, but people seemed to ignore my logic behind that. Also, I have done some tests with the new 310.70 nvidia drivers, and they experience the same frame spiking evident in the Cat 12.11 betas

TC's Techreport NVIDIA driver is at 310.54 beta.

[QUOTE="04dcarraher"][QUOTE="hartsickdiscipl"]

Wow.. the 6970 is by far the worst there.

ferret-gamer

There is no conspiracy, it just depends on the game, like batman being notorious for having problems in general and highly favorable to nvidia. Dirt showdown shows the exact opposite with nvidia cards having the latency problems, and max payne 3 has both brands trading blows.