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AMD GPU BIOS - Set FPS Target In BIOS?

post #1 of 15
Thread Starter 
Hi I'm looking to find a way to set a MAXIMUM FPS amount for EXTREME Overclocking BIOS, since anything above 60FPS at high overclock is burning through POWER like nothing else.

Limiting the FPS would allow to keep the card safe while at Maximum Clocks...

Thank You All thumb.gif
post #2 of 15
99.9% sure there is no way to set a frame rate cap in the firmware. I'm doubtful there is even any way to register frame rate at the firmware level.

Best bet is to set a power/tdp cap in the firmware and then cap framerate with the game or a 3rd party app in software.
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post #3 of 15
Thread Starter 
It would be interesting to test a Peltier 12v Positive Engery And Negative Energy to lower the core temp according to voltage 0-12V, within the ambient condensation prevention level. It would be possible to maintain ambient at idle and load with proper programming. Which would exceed water cooling as well. Maybe if I could find a 0.25mm thick one that would work nicely.

Thanks thumb.gif
post #4 of 15
Not seen such a register or value to cap frame rate in ROM, driver does this function only AFAIK.
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post #5 of 15
You can use Afterburner to cap almost everything at 60hz. The option is in the included RivaTuner Statistic Server.

Not pushing extra frames may simply not load up the card. Sure you will have a high clock speed, but low usage because the card has little work to do.

This is depend on the game and resolution.
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post #6 of 15
Thread Starter 
Cool, thanks.

I've been having this issue on the Tonga, where the BIOS doesn't know the difference between media decoding and 3d rendering as far as clock selection goes.

A typical anomaly I witness upon media decode, is upon starting the video the gpu utilization goes to 90-99% at which time the GPU ups the clocks to full 3d speed on the core, memory, and voltage.

Then it goes back to 0-8% or so, but every so often spikes to full 3d speed... Causing Up-And-Down power consumption. I think AMD needs to correct this and remove "Power Efficiency" option.

They should Re-Tune & Re-Work the Power Efficiency Option & Drivers from now on to have it enabled by default yet work correctly. I think it's an experimental option, they aren't sure if it should stick around.

I think what Power Efficency should mean is like Governor Control, like Android. Just teach the video card bios/ driver to tell the difference between 3d rendering load and dxva load.

The reason I say this is I tested out a BIOS where it wasn't allowed to leave STATE 0 for the core and memory while at 665 millivolts is as low as I've tested so far which droops to 662 millivolts.

In State 0, AMD Graphics Horsepower can man handle 3840x2160 @ 23.97fps With EASE. It stutters for a nano second at first and just runs smooth as butter... All the while using like 1 freakin watt! Mind you it is at 99% continuous but using between 0.6 and 0.9 watts maybe a bit more at 99%... As well as continuous 37C.

This kind of ideology and thought process is similar to all ways of this world for which power can be saved. Like for instance in a car, the fuel map dictates less consumption of fuel at less revolution and high throttle amount. So it saves gas to let the rpm's droop and give it more gas to save fuel rather than downshifting spinning the engine revolutions higher with less throttle actually burns more fuel.

AMD has it so if utilization gets to a certain point, it auto-hops clocks to maintain reduced utilization at the cost of higher power consumption. So it's best to let STATE 0, go to 99 to 100% utilization all the time while on the desktop or watching dxva 4k. If State 0 isn't enough for Internet Video & Games assign the driver to the specific "Internet Video & Games" State which also gives smooth operation while at the least power consumption.

Another thing to consider is there is no need to go higher than 300Mhz for Media Decoding... 3840x2160 is 8,294,400 pixels, that's 8 Million 294 Thousand pixels per frame... We need 23.97 of them per second. That's around 248 Million Pixels per second to decode 4k. The R9 380X has 32 ROP's, so 300Mhz x 32 = 9 Billion 600 Million Pixels per second... So it's clear AMD is wasting energy, energy flying out the window for absolutely nothing to gain but a high power bill.

At idle & Decode, no more than 1 Billion Pixels per second is logical... That means for 32 ROP's we need just an awesome 32 MEGA HERTZ on hand to sizzle through over 1 Billion Pixels per second while using Ultra-Micron-Nano Power Consumption... Take the lead in power efficiency with ease.

Default BIOS hops all over typical consumption 20 watts for 1080p dxva, and 4k dxva can go up to 40 or more watts and the heat goes way up too...

At 665 millivolts the fan stays off and it simply isn't using enough power to get above 40C or no more than 5 watts... Setting the TDP Limits all of them to 1 Watt, the card uses less than 1 Watt all the time especially during 4k decode. I literally saw less than 1 Watt!

Anyway, if you guys understand what I mean and might have suggestions I'd appreciate it. I already notified AMD of this though so will hope to see improvements in the 16.9.3 and beyond. thumb.gif
Edited by chris89 - 9/27/16 at 5:27am
post #7 of 15
AMD has had awful video power consumption for years. I actually switched to Nvidia in my media center as a result.

I highly doubt any AMD card(full card not just the gpu portion) uses under 1 watt at idle(zero core does not count since the card is not displaying video). Even a RX 460 idles at about 8 watts and takes about 17 watts to playback HD video. The 1060 takes about 5 and 6 respectively. And this is a lower power card. Some of them are over 70 watts just for HD video playback(the RX480 is about 39 watts).

Note the card is overclocked, but it is like 56 mhz. so not a big amount.
https://www.techpowerup.com/reviews/ASUS/RX_460_STRIX_OC/22.html

The number of ROPs may not scale perfectly so the number of pixels the card can draw does not always lineup with what you think it should on paper. Any processing is added as well. With everything being hardware accelerated now, the video card also has more work to do on the desktop than it did back in the XP days.

Do not get me wrong. I would love to see cards set a clock speed and stick to it, but both sides have issues with clock speeds making jumps. Nvidia just does not tend to go as far or as often(but it still does). All of this is an effort to ensure the performance never suffers. Some users already force full speed all the time(on cpus as well) because they claim to feel the transitions.

I personally have been OK with current power savings, but in some cases they actually do NOT stay clocked up enough and cause performance issues. This has only happened with very low requirement games. I used to fix it by forcing as much AA as I could to get the card to kick up to a higher speed.
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post #8 of 15
Thread Starter 
Nice man, I'll post some screenshots soon. Forcing only state 0 and I've been working on the lowest possible state 0 voltage... So far 660 millivolts, which uses like 0.600 watts on the core and 0.150 on memory.

Which card are you running? Anyone running Rx460/ 470/ 480?
post #9 of 15
I do not have an RX series card. I currently have a 1070.

Will be interesting to see.
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post #10 of 15
Thread Starter 
Nice card man! 1070 is a nice one. For some reason since I've gone AMD, I just love the feel and looks of AMD for some reason I get a little bit more thrill from AMD gaming. It might not be eye watering fps, sometimes I have seen staggering fps numbers at 4k. Gaming on the r9 380x at around 1235Mhz eats up all 225W tdp and does very well with its 39 billion, 500 million pixel's per second and 158 billion, 80 million texel's per second and a solid 200GB/s GDDR5.

I can't wait for a 256-bit AMD Card, with 128 ROP's, and 256 TMU's now that'll be the day. Even a mainstream gamer card with 128 ROP, and 256 TMU with 256-bit.

Maybe AMD could pull off the same core chip with 128, 192, and 256-bit variants for low tdp astronomical pixel and texel performance. I know its expensive development, but its soo worth it AMD. Like take the rx480 256gb/s memory controller and tune 3 chips, one 128 bit, one 192 bit, and one 256bit. All of which on a chip so well developed it is produced on a very acceptable budget for 128 Raster Operator Pipelines (Pixel Throughput), and 256 Texel Mapping Unit (Texture Throughput). With 128 ROP and 256 TMU the 128 bit width memory channel can produce half of 256GB/s... 128GB/s with epic pixel and texel performance. The 192 bit width memory channel variant would have 33.33% less memory performance than 256GB/s for 192GB/s. Then finally 256 bit at 256GB/s @ 128 ROP @ 256 TMU @ 1GHZ CORE @ 150 to 225 watts of tdp @ advertised as 150W while having its upper 4k fps capabilities up in the 225W tdp range. Hire a contractor to build One Super-Powerful voltage regulator chip that controls the voltage of all components, including core, aux, media stuff, and memory controller. That way you can design it to handle high power capacity cleanly and have a large cooling surface area for fujipoly and pure copper cooling so performance can soar worry free.

This is what I got from 4k decode forced to state 0... 3.860 watts on the core. Running 680mv on this but 0.670 to 0.675v does around 0.620w minimum roughly within 0.015w. Hope to see this on 16.9.3, crossing fingers that AMD Engineers have what it takes to get this done. thumb.gif

If anyone thinks this isn't possible, I would ask to first test what state 0 has and see for yourself how powerful state 0 is for even 3840x2160 decode.


Edited by chris89 - 9/29/16 at 1:03pm
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